FN Thomson Reuters Web of Science™ VR 1.0 PT J AU BROXSON, EH WANG, J CREISSEN, D NISHIDA, M AF BROXSON, EH WANG, J CREISSEN, D NISHIDA, M TI USE OF A NEW SOLVENT-DETERGENT HEAT-TREATED FIBRINOGEN CONCENTRATE IN A CHILD WITH AFIBRINOGENEMIA SO BLOOD LA English DT Meeting Abstract C1 USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. ALPHA THERAPEUT CORP,LOS ANGELES,CA. GREEN CROSS CO,OSAKA,JAPAN. 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 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1993 VL 82 IS 10 SU 1 BP A156 EP A156 PG 1 WC Hematology SC Hematology GA MJ682 UT WOS:A1993MJ68200607 ER PT J AU MCGLASSON, DL ASHCRAFT, JH AF MCGLASSON, DL ASHCRAFT, JH TI MODIFICATION OF STACLOT(R) LA TEST FOR DETECTION OF LUPUS ANTICOAGULANTS - FASTER TURN-AROUND-TIMES WITHOUT AFFECTING SENSITIVITY OR PRECISION SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. PARKLAND MEM HOSP & AFFILIATED INST,DEPT SPECIAL COAGULAT,DALLAS,TX 75235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1993 VL 82 IS 10 SU 1 BP A620 EP A620 PG 1 WC Hematology SC Hematology GA MJ682 UT WOS:A1993MJ68202463 ER PT J AU SCHROEDER, M ESSELL, J HARMAN, G HALVORSON, R DOLAN, M CALLANDER, N SNYDER, M WILKS, S ALLERTON, J THOMPSON, J AF SCHROEDER, M ESSELL, J HARMAN, G HALVORSON, R DOLAN, M CALLANDER, N SNYDER, M WILKS, S ALLERTON, J THOMPSON, J TI DIRECTED GANCICLOVIR (DHPG) PROPHYLAXIS AGAINST CYTOMEGALOVIRUS (CMV) PNEUMONITIS IN PATIENTS UNDERGOING ALLOGENEIC BONE-MARROW TRANSPLANTATION SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. 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 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1993 VL 82 IS 10 SU 1 BP A425 EP A425 PG 1 WC Hematology SC Hematology GA MJ682 UT WOS:A1993MJ68201681 ER PT J AU WILKS, S ESSELL, J MCGLASSON, D HARMAN, G HALVORSON, R CALLANDER, N SNYDER, M ALLERTON, J AF WILKS, S ESSELL, J MCGLASSON, D HARMAN, G HALVORSON, R CALLANDER, N SNYDER, M ALLERTON, J TI DISTURBANCES OF COAGULATION-FACTORS WITH BONE-MARROW TRANSPLANTATION (BMT) - A POSSIBLE LINK TO THE GENESIS OF VENOOCCLUSIVE DISEASE OF THE LIVER (VOD) SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU 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 NOV 15 PY 1993 VL 82 IS 10 SU 1 BP A623 EP A623 PG 1 WC Hematology SC Hematology GA MJ682 UT WOS:A1993MJ68202473 ER PT J AU DRAKES, JA MCGREGOR, WK MASON, AA AF DRAKES, JA MCGREGOR, WK MASON, AA TI 2-ELECTRON EXCHANGE IN COLLISIONS OF NEUTRAL MOLECULES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID NON-RELATIVISTIC SOURCES; QUANTUM ELECTRODYNAMICS; FIELDS AB The quenching behavior of neutral metastable species during collisions with a neutral partner is investigated. Usually, radiationless energy transfer can be described by invoking the radiation field as an intermediary between interacting molecules. However, for metastables, the dominant radiation transition moments are suppressed, most often by spin selection rules between the excited and ground energy states. The fast reaction rates for the quenching of the metastables suggest a different intermediary for such cases. Motivated by this phenomena, a two-electron exchange process is proposed as the quenching mechanism. During a collision, it is envisioned that the excited outer shell electron of the metastable effectively undergoes a change of molecular center and is replaced by an electron from the collision partner. The theoretical framework for this process is developed using the formalism of molecular quantum electrodynamics. The electron exchange term is obtained explicitly, using the minimal-coupling method. C1 UNIV TENNESSEE,INST SPACE,DEPT PHYS,TULLAHOMA,TN 37389. RP DRAKES, JA (reprint author), SVERDRUP TECHNOL INC,ARNOLD AFB,TULLAHOMA,TN 37389, USA. NR 28 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD NOV 15 PY 1993 VL 99 IS 10 BP 7813 EP 7818 DI 10.1063/1.465659 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA MH744 UT WOS:A1993MH74400055 ER PT J AU PUFFER, RL AF PUFFER, RL TI THE PEARL-HARBOR PAPERS - INSIDE THE JAPANESE PLANS - GOLDSTEIN,DM, DILLON,KV SO LIBRARY JOURNAL LA English DT Book Review RP PUFFER, RL (reprint author), USAF,HIST PROGRAM,LOS ANGELES,CA, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD NOV 15 PY 1993 VL 118 IS 19 BP 88 EP 88 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA MG194 UT WOS:A1993MG19400132 ER PT J AU SHOWALTER, DE AF SHOWALTER, DE TI A WORLD AT ARMS - A NEW HISTORY OF WORLD-WAR - WEINBERG,GL SO LIBRARY JOURNAL LA English DT Book Review RP SHOWALTER, DE (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD NOV 15 PY 1993 VL 118 IS 19 BP 88 EP 88 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA MG194 UT WOS:A1993MG19400137 ER PT J AU SMITH, PR KHOBAIB, M GRAVES, JA AF SMITH, PR KHOBAIB, M GRAVES, JA TI CREEP-BEHAVIOR OF AN ALPHA-2 AND AN ORTHORHOMBIC TI-BASED MATRIX SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. ROCKWELL SCI CTR,THOUSAND OAKS,CA 91360. RP SMITH, PR (reprint author), WRIGHT LAB,MLLN,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 14 Z9 14 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD NOV 15 PY 1993 VL 29 IS 10 BP 1313 EP 1318 DI 10.1016/0956-716X(93)90130-K PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA LZ594 UT WOS:A1993LZ59400011 ER PT J AU GRUBER, MR MESSERSMITH, NL DUTTON, JC AF GRUBER, MR MESSERSMITH, NL DUTTON, JC TI 3-DIMENSIONAL VELOCITY-FIELD IN A COMPRESSIBLE MIXING LAYER SO AIAA JOURNAL LA English DT Article ID TURBULENT SHEAR-LAYER AB A turbulent, compressible mixing layer with a relative Mach number of 1.59 has been investigated experimentally using a two-component laser Doppler velocimeter system. Two sets of profiles were obtained at each streamwise measurement location to compile the streamwise, transverse, and spanwise turbulence statistics. Results from the fully developed region of the mixing layer showed similar peak values of streamwise and spanwise turbulence intensities along with reduced peak values of transverse turbulence intensity, normalized primary Reynolds shear stress, and normalized turbulent kinetic energy in comparison to the respective quantities from incompressible shear layers. Because the Reynolds normal stress ratio sigma(v)/sigma(w) was found to decrease with increasing relative Mach number, it is concluded that the spanwise component of the mixing layer turbulence becomes more important as compressibility is increased. In addition, various turbulence profiles demonstrated a reduction of lateral extent on the high speed side of the mixing layer as compared to profiles in incompressible mixing layers. C1 PURDUE UNIV,SCH AERONAUT & ASTRONAUT,W LAFAYETTE,IN 47907. UNIV ILLINOIS,DEPT MECH & IND ENGN,URBANA,IL 61801. RP GRUBER, MR (reprint author), WRIGHT LAB,DIV ADV PROPULS,AEROPROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 26 TC 24 Z9 25 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 NOV PY 1993 VL 31 IS 11 BP 2061 EP 2067 DI 10.2514/3.11891 PG 7 WC Engineering, Aerospace SC Engineering GA MF793 UT WOS:A1993MF79300013 ER PT J AU MCGLASSON, DL BABCOCK, JL BERG, L TRIPLETT, DA AF MCGLASSON, DL BABCOCK, JL BERG, L TRIPLETT, DA TI ARACHNASE - AN EVALUATION OF A POSITIVE CONTROL FOR PLATELET NEUTRALIZATION PROCEDURE TESTING WITH 7 COMMERCIAL ACTIVATED PARTIAL THROMBOPLASTIN TIME REAGENTS SO AMERICAN JOURNAL OF CLINICAL PATHOLOGY LA English DT Article DE ARACHNASE; BROWN RECLUSE SPIDER; ACTIVATED PARTIAL THROMBOPLASTIN TIME; LUPUS ANTICOAGULANTS; PLATELET NEUTRALIZATION PROCEDURE ID LUPUS ANTICOAGULANTS; LABORATORY DIAGNOSIS AB ARACHnase (Hemostasis Diagnostics International Co., Denver, CO) is a normal plasma that contains a venom extract from the brown recluse spider, Loxosceles reclusa, which mimics the presence of a lupus anticoagulant (LA). Seven activated partial thromboplastin time (APTT) reagents were used for platelet neutralization procedure (PNP) testing with ARACHnase: Automated APTT (Organon-Teknika, Durham, NC); Thrombofax and Thrombosil (Ortho, Raritan, NJ); Actin and Actin FSL (Dade, Aguado, PR); and Thromboscreen-Kontact and Thromboscreen-APTT LS (Pacific-Hemostasis, Ventura, CA). ARACHnase consistently displayed a positive PNP result of greater than 5 seconds correction of the initial baseline APTT. Thus, ARACHnase may provide a positive control for LA testing, regardless of the choice of APTT reagent and activator/phospholipid combination. C1 HEMEX LABS,DEPT COAGULAT,PHOENIX,AZ. BALL MEM HOSP,DEPT PATHOL,MUNCIE,IN 47303. RP MCGLASSON, DL (reprint author), WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,1255 WILFORD HALL LOOP,LACKLAND AFB,TX 78236, USA. NR 9 TC 10 Z9 10 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0002-9173 J9 AM J CLIN PATHOL JI Am. J. Clin. Pathol. PD NOV PY 1993 VL 100 IS 5 BP 576 EP 578 PG 3 WC Pathology SC Pathology GA MH023 UT WOS:A1993MH02300017 PM 8249897 ER PT J AU JORDAN, KT HOWELL, JM LAUERMAN, WC BUTZIN, CA AF JORDAN, KT HOWELL, JM LAUERMAN, WC BUTZIN, CA TI A RADIOGRAPHIC COMPARISON OF SHORT-ARM CAST AND PLASTER AND FIBERGLASS WRIST SPLINTS SO AMERICAN JOURNAL OF EMERGENCY MEDICINE LA English DT Article DE IMMOBILIZATION; PLASTER CASTS; PLASTER OF PARIS; SPLINTS RP JORDAN, KT (reprint author), WILFORD HALL USAF MED CTR,DEPT EMERGENCY MED,SAN ANTONIO,TX, USA. NR 0 TC 3 Z9 3 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 NOV PY 1993 VL 11 IS 6 BP 590 EP 591 DI 10.1016/0735-6757(93)90007-X PG 2 WC Emergency Medicine SC Emergency Medicine GA MF861 UT WOS:A1993MF86100007 PM 8240558 ER PT J AU HAGAN, RL JACOBS, LF PIMSLER, M MERRITT, GJ AF HAGAN, RL JACOBS, LF PIMSLER, M MERRITT, GJ TI STABILITY OF MIDAZOLAM HYDROCHLORIDE IN 5-PERCENT DEXTROSE INJECTION OR 0.9-PERCENT SODIUM-CHLORIDE INJECTION OVER 30 DAYS SO AMERICAN JOURNAL OF HOSPITAL PHARMACY LA English DT Note ID INFUSION; SEDATION C1 DAVID GRANT USAF MED CTR,SCI RES LAB,CLIN INVEST FACIL,TRAVIS AFB,CA 94535. DAVID GRANT USAF MED CTR,DEPT PHARM,CLIN PHARM SERV,TRAVIS AFB,CA 94535. USAF,DIV CLIN INVEST & LIFE SCI,MED OPERATING AGCY,OFF SURGEON GEN,BOLLING AFB,DC. NR 9 TC 6 Z9 6 U1 0 U2 1 PU AMER SOC HEALTH-SYSTEM PHARMACISTS PI BETHESDA PA 7272 WISCONSIN AVE, BETHESDA, MD 20814 SN 0002-9289 J9 AM J HOSP PHARM JI Am. J. Hosp. Pharm. PD NOV PY 1993 VL 50 IS 11 BP 2379 EP 2381 PG 3 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA MF849 UT WOS:A1993MF84900035 PM 8266971 ER PT J AU NARAHARA, KA THADANI, U KLUTTS, S GREENBERG, B LIND, M SPACCAVENTO, L BURNS, MJ MASSIE, BM HAEUSSLEIN, E TOPAZ, N DIBIANCO, R LINDEMUTH, D BRIZENDINE, M KAWASAKI, H MULLER, J DECK, J VERPLOEGH, J DAVISON, R FINTEL, D PARKER, M COCHRAN, C HOROWITZ, LD CORKADELL, L CARLSON, KL HALL, R HARLAN, M SHABETAI, R NELSON, C EISWIRTH, CC DUMAS, D DUMAS, D ROFFIDAL, L BRADY, D FRIEDMAN, AW LIPMAN, RC SILVER, SJ SUCHTA, C KRONE, R MUMM, K HUMPHREY, J SPINNER, L JANOSIK, D SCHWEISS, M WITTREY, S RONAN, JA CASEY, E STURM, S HASKELL, RJ MARCUS, FI GEAR, K FRIEDMAN, M FLEMONS, SB BLACK, S DELEON, AC RITTER, D HAGAN, AD DURHAM, J KATZ, RJ BUFF, L SULLIVAN, JM COLEMAN, P AF NARAHARA, KA THADANI, U KLUTTS, S GREENBERG, B LIND, M SPACCAVENTO, L BURNS, MJ MASSIE, BM HAEUSSLEIN, E TOPAZ, N DIBIANCO, R LINDEMUTH, D BRIZENDINE, M KAWASAKI, H MULLER, J DECK, J VERPLOEGH, J DAVISON, R FINTEL, D PARKER, M COCHRAN, C HOROWITZ, LD CORKADELL, L CARLSON, KL HALL, R HARLAN, M SHABETAI, R NELSON, C EISWIRTH, CC DUMAS, D DUMAS, D ROFFIDAL, L BRADY, D FRIEDMAN, AW LIPMAN, RC SILVER, SJ SUCHTA, C KRONE, R MUMM, K HUMPHREY, J SPINNER, L JANOSIK, D SCHWEISS, M WITTREY, S RONAN, JA CASEY, E STURM, S HASKELL, RJ MARCUS, FI GEAR, K FRIEDMAN, M FLEMONS, SB BLACK, S DELEON, AC RITTER, D HAGAN, AD DURHAM, J KATZ, RJ BUFF, L SULLIVAN, JM COLEMAN, P TI SPONTANEOUS VARIABILITY OF VENTRICULAR-FUNCTION IN PATIENTS WITH CHRONIC HEART-FAILURE SO AMERICAN JOURNAL OF MEDICINE LA English DT Article ID CHRONIC AORTIC REGURGITATION; ACUTE MYOCARDIAL-INFARCTION; EJECTION FRACTION; EXERCISE CAPACITY; MORTALITY; THERAPY; DETERMINANTS; SCINTIGRAPHY; DYSFUNCTION; ANGIOGRAPHY AB PURPOSE: The spontaneous variation of the left and right ventricular ejection fractions (LVEF and RVEF) was evaluated in patients with chronic heart failure receiving only digoxin and diuretics over a 12-week interval. PATIENTS AND METHODS: Fifty-one patients with stable heart failure were studied with radionuclide angiography. A baseline evaluation and a 12-week follow-up study were performed. Heart failure therapy consisted of digoxin and diuretics alone during this time. RESULTS: The mean baseline LVEF (n = 51) was 27.2 +/- 9.5 (range: 7 to 50) and the LVEF after 12 weeks was 27.6 +/- 9.7 (range. 11 to 53, p = NS versus baseline). Mean RVEF (n = 19) was 313 +/- 11.3 at baseline and 30.3 +/- 11.3 (range: 14 to 50, p = NS versus baseline) after 12 weeks. Although there was no significant change in LVEF or RVEF in this group of patients, individual patients demonstrated considerable spontaneous variation. Individual LVEF values changed from 0 to 26 ejection fraction percentage points (mean of individual changes = 5.6 +/-5.5). Individual RVEF determinations over the 12-week period varied by 0 to 15 percentage units (mean = 5.6 +/- 4.9). Thirty-five percent of patients had an absolute change in LVEF greater than 5 and 37% of patients had an absolute change of RVEF greater than 5. Even after deletion of the two worst outliers from the LVEF and RVEF data, a change in LVEF greater than 13 and a change in RVEF greater than 11% units were necessary to exclude spontaneous variation as a likely cause for the observed changes (95% confidence limits). No relationship between a change in the individual patient's LVEF or RVEF was found when these values were compared with exercise time, systolic or diastolic blood pressure, heart rate, or degree of baseline left or right ventricular dysfunction. CONCLUSION: In patients with heart failure, large (greater than 5) spontaneous changes in LVEF and RVEF may be seen in over one third of patients during a 12-week period. This variability should be considered when the ejection fraction is used as an index of improved or worsened cardiac function. The use of the LVEF and RVEF to assess interventions or therapy for heart failure should be interpreted with caution. C1 UNIV OKLAHOMA, HLTH SCI CTR, OKLAHOMA CITY, OK 73190 USA. VET ADM MED CTR, OKLAHOMA CITY, OK 73104 USA. OREGON HLTH SCI UNIV, PORTLAND, OR 97201 USA. USAF, WILFORD HALL MED CTR, LACKLAND AFB, TX 78236 USA. UNIV CALIF SAN FRANCISCO, VET ADM MED CTR, SAN FRANCISCO, CA 94143 USA. WASHINGTON ADVENTIST HOSP, TAKOMA PK, MD USA. UNIV CALIF LOS ANGELES, HARBOUR MED CTR, LOS ANGELES, CA USA. VET ADM MED CTR, ALBUQUERQUE, NM 87108 USA. NW MEM HOSP, CHICAGO, IL 60611 USA. UNIV HOSP DENVER, DENVER, CO USA. OREGON CARDIOVASC TEACHING LTD, EUGENE, OR USA. TULSA HEART CTR, TULSA, OK USA. GEORGE WASHINGTON UNIV, MED CTR, WASHINGTON, DC 20037 USA. UNIV TENNESSEE, CTR HLTH SCI, COLL MED, MEMPHIS, TN 38163 USA. UNIV CALIF LOS ANGELES, SCH MED, DEPT MED, LOS ANGELES, CA 90024 USA. ST LUKES EPISCOPAL HOSP, TEXAS HEART INST, HOUSTON, TX 77030 USA. VET ADM MED CTR, LA JOLLA, CA USA. ALTON OCHSNER MED FDN & OCHSNER CLIN, NEW ORLEANS, LA 70121 USA. TULANE UNIV, SCH MED, NEW ORLEANS, LA 70112 USA. SHADYSIDE HOSP, PITTSBURGH, PA 15232 USA. BRADDOCK GEN HOSP, PITTSBURGH, PA USA. JEFFERSON CTR HOSP, PITTSBURGH, PA USA. JEWISH HOSP ST LOUIS, ST LOUIS, MO 63110 USA. ST LOUIS VET ADM HOSP, ST LOUIS, MO USA. UNIV ARIZONA, ARIZONA HLTH SCI CTR, TUCSON, AZ 85724 USA. CARDIOL TULSA INC, TULSA, OK USA. ST JOHNS MED CTR, CVI, TULSA, OK USA. RP NARAHARA, KA (reprint author), UNIV CALIF LOS ANGELES, LOS ANGELES CTY HARBOR MED CTR,DIV CARDIOL, DEPT MED,BLDG RB-2, 1000 W CARSON ST, TORRANCE, CA 90509 USA. NR 24 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0002-9343 J9 AM J MED JI Am. J. Med. PD NOV PY 1993 VL 95 IS 5 BP 513 EP 518 DI 10.1016/0002-9343(93)90334-L PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA MG686 UT WOS:A1993MG68600010 PM 8238068 ER PT J AU BLOSS, JD AF BLOSS, JD TI THE USE OF ELECTROSURGICAL TECHNIQUES IN THE MANAGEMENT OF PREMALIGNANT DISEASES OF THE VULVA, VAGINA, AND CERVIX - AN EXCISIONAL RATHER THAN AN ABLATIVE APPROACH SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article DE DIATHERMY LOOP EXCISION; INTRAEPITHELIAL NEOPLASIA ID CARBON-DIOXIDE LASER; VOLTAGE DIATHERMY LOOP; INTRA-EPITHELIAL NEOPLASIA; INTRAEPITHELIAL NEOPLASIA; TRANSFORMATION ZONE; CARCINOMA INSITU; CONIZATION; EXPERIENCE; VAPORIZATION; DYSPLASIA AB In recent years electrosurgical excision techniques have been advocated for the evaluation and treatment of premalignant diseases of the vulva, vagina, and cervix. Technologic advances in electrosurgical generators and in fine wire loops have made these techniques feasible in the outpatient setting, and considerable experience has been accumulated in Europe and the United States. This article discusses the advantages and disadvantages of this ''new'' technology with emphasis on the available scientific literature. In summary, electrosurgical excision offers the benefit of providing tissue for complete histopathologic evaluation without compromising the established convenience, safety, and efficacy of ablative techniques. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,DIV GYNECOL ONCOL,LACKLAND AFB,TX 78236. NR 23 TC 6 Z9 7 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD NOV PY 1993 VL 169 IS 5 BP 1081 EP 1085 PG 5 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA MH156 UT WOS:A1993MH15600001 PM 8238163 ER PT J AU REA, MA BUCKLEY, B LUTTON, LM AF REA, MA BUCKLEY, B LUTTON, LM TI LOCAL-ADMINISTRATION OF EAA ANTAGONISTS BLOCKS LIGHT-INDUCED PHASE-SHIFTS AND C-FOS EXPRESSION IN HAMSTER SCN SO AMERICAN JOURNAL OF PHYSIOLOGY LA English DT Article DE SUPRACHIASMATIC NUCLEI; EXCITATORY AMINO ACIDS; CNQX; MK-801; CIRCADIAN RHYTHM ID METHYL-D-ASPARTATE; ACID RECEPTOR ANTAGONISTS; SUPRACHIASMATIC NUCLEUS; CIRCADIAN-RHYTHMS; GENE-EXPRESSION; NMDA RECEPTOR; RETINOHYPOTHALAMIC TRACT; PHOTIC INDUCTION; RAT HYPOTHALAMUS; GOLDEN-HAMSTER AB Syrian hamsters were fitted with guide cannulas stereotaxically aimed at the suprachiasmatic nuclei (SCN) and housed in constant darkness in cages equipped with running wheels. Animals received 300-nl injections of either vehicle, CNQX, or MK-801 into the region of the SCN 5 min before a brief (10 min at 20 lx) light exposure. Local administration of either 1 mM CNQX or 1 mM MK-801 at circadian time (CT) 18 significantly inhibited light-induced phase advances (vehicle = 52 +/- 9 min; CNQX = 12 +/- 7 min; MK-801 = 12 +/- 5 min; P < 0.05 relative to vehicle + light group). The effects of both drugs were reversible and dose related. Injection of 1 mM MK-801 at CT13.5 resulted in a 71% inhibition of light-induced phase delays (vehicle = -51 +/- 6 min; MK-801 = -15 +/- 5 min; P < 0.05), while CNQX failed to significantly inhibit light-induced phase delays (-39 +/- 10 min). Local administration of either 1 mM CNQX or MK-801 into the SCN region reduced the number of Fos-immunoreactive cells relative to vehicle-injected controls by approximately 32 and 44%, respectively (vehicle = 951 +/- 79; CNQX = 643 +/- 135, P < 0.05; MK-801 = 533 +/- 143, P < 0.05). These results demonstrate that both N-methyl-D-aspartic acid (NMDA) and non-NMDA receptors located in the SCN region mediate light-induced phase shifts and Fos expression in the SCN. RP REA, MA (reprint author), ARMSTRONG LAB,CIRCADIAN NEUROBIOL RES GRP,AL CFTO,2504 D DR,STE1,BROOKS AFB,TX 78235, USA. NR 40 TC 113 Z9 113 U1 0 U2 2 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0002-9513 J9 AM J PHYSIOL JI Am. J. Physiol. PD NOV PY 1993 VL 265 IS 5 BP R1191 EP R1198 PN 2 PG 8 WC Physiology SC Physiology GA MJ168 UT WOS:A1993MJ16800080 ER PT J AU PASCHALL, RN ANDERSON, DJ AF PASCHALL, RN ANDERSON, DJ TI LINEAR-QUADRATIC GAUSSIAN CONTROL OF A DEFORMABLE MIRROR ADAPTIVE OPTICS SYSTEM WITH TIME-DELAYED MEASUREMENTS SO APPLIED OPTICS LA English DT Article DE ADAPTIVE OPTICS; DEFORMABLE MIRROR; LQG CONTROL; WAVE-FRONT PHASE COMPENSATION; TIME-DELAY COMPENSATION ID ATMOSPHERIC-TURBULENCE; ZERNIKE POLYNOMIALS; COMPENSATION AB We Present a technique for controlling a ground-based deformable mirror adaptive optics telescope to compensate for optical wave-front phase distortion induced by a turbulent atmosphere. Specifically, a predictive linear quadratic Gaussian (LQG) controller is designed that generates commanded control voltages to the mirror actuators based on a set of time-delayed wave-front slope measurements from a Hartmann-type wave-front sensor. C1 PHILLIPS LAB, SPACE EXPT DIRECTORATE, KIRTLAND AFB, NM 87117 USA. RP PASCHALL, RN (reprint author), USAF, INST TECHNOL, DEPT ELECT & COMP ENGN, WRIGHT PATTERSON AFB, OH 45433 USA. NR 21 TC 51 Z9 54 U1 2 U2 14 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD NOV 1 PY 1993 VL 32 IS 31 BP 6347 EP 6358 PG 12 WC Optics SC Optics GA MF623 UT WOS:A1993MF62300021 PM 20856471 ER PT J AU DENNIS, RJ APSEY, DA IVAN, DJ AF DENNIS, RJ APSEY, DA IVAN, DJ TI AIRCREW SOFT CONTACT-LENS WEAR - A SURVEY OF USAF EYECARE PROFESSIONALS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB The USAF, when it approved soft contact lens (SCL) wear for aircrew in June 1989, chose a conservative approach that authorizes only daily-wear of extended-wear SCL's. The aircrew SCL program has been perceived as a success, and follow-up data are no longer being collected. A survey was sent to all USAF eyecare professionals to assess the types and extent of SCL-related ocular pathology, the magnitude of environmental SCL problems in the cockpit, and the brands of SCL's that are being fitted. Only two instances of ulcerative keratitis were reported. The most severe inflight problem reported was the dry cockpit environment. CSI-T (Pilkington Barnes-Hind) was the most frequently used spherical lens and the Hydrasoft Toric XW (CoastVision) was the most used toric lens. The USAF aircrew SCL program appears to be progressing successfully. However, the Ophthalmology Branch at Armstrong Laboratory will continue to monitor the program for serious medical complications. C1 USAF,AEROSP MED DIRECTORATE,DIV CLIN SCI,OPHTHALMOL BRANCH,BROOKS AFB,TX 78235. NR 21 TC 2 Z9 4 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1993 VL 64 IS 11 BP 1044 EP 1047 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA ME955 UT WOS:A1993ME95500011 PM 8280038 ER PT J AU BAIRD, RC JUMPER, GY AF BAIRD, RC JUMPER, GY TI OLFACTORY ORGANS IN THE DEEP-SEA HATCHETFISH STERNOPTYX-DIAPHANA (STOMIIFORMES, STERNOPTYCHIDAE) SO BULLETIN OF MARINE SCIENCE LA English DT Note ID EASTERN GULF; MEXICO C1 USAF,PHILLIPS LAB,DIV AEROSP ENGN,BEDFORD,MA 01731. RP BAIRD, RC (reprint author), WORCESTER POLYTECH INST,DEPT BIOL & BIOTECHNOL,WORCESTER,MA 01609, USA. NR 10 TC 4 Z9 4 U1 1 U2 2 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD NOV PY 1993 VL 53 IS 3 BP 1163 EP 1167 PG 5 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA MX459 UT WOS:A1993MX45900015 ER PT J AU STYTZ, MR PARROTT, RW AF STYTZ, MR PARROTT, RW TI USING KRIGING FOR 3D MEDICAL IMAGING SO COMPUTERIZED MEDICAL IMAGING AND GRAPHICS LA English DT Review DE KRIGING; STATISTICAL ESTIMATION; ISO-SURFACE EXTRACTION; CELL SUBDIVISION; SURFACE RENDERING; 3D MEDICAL IMAGING; DETERMINISTIC INTERPOLATION ID SHAPE-BASED INTERPOLATION; MARKOV RANDOM-FIELDS; BOUNDARY DETECTION; SURFACE DETECTION; DIGITAL-TOPOLOGY; PLANAR CONTOURS; BINARY IMAGES; EXPERT SYSTEM; SEGMENTATION; ALGORITHMS AB We describe our implementation of kriging for interpolation of scalar values in three-dimensional medical image surface rendering and for slice interpolation. Kriging is an interpolation technique developed in the geosciences for estimating ore deposit spatial distributions. Kriging has been mathematically proven to be the best (statistically optimal) linear unbiased estimation technique for spatially distributed data. As a byproduct of the kriging technique, kriging can calculate the estimation error for the interslice interpolated values. Kriging also offers the potential for quantifying the interpolation error in slices computed by the estimation technique. This paper presents the initial results obtained using kriging for the pre-processing operations of slice interpolation by slice-value interpolation and interpolating voxel values during iso-surface extraction. We found that kriging is an accurate interpolation technique for surface rendering and for slice interpolation. Our results indicate that kriging can duplicate the rendering results obtained with other interpolation techniques and it offers the potential for providing visually ''better'' images than are obtained using the other interpolation techniques we tested. RP STYTZ, MR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 110 TC 24 Z9 30 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0895-6111 J9 COMPUT MED IMAG GRAP JI Comput. Med. Imaging Graph. PD NOV-DEC PY 1993 VL 17 IS 6 BP 421 EP 442 DI 10.1016/0895-6111(93)90059-V PG 22 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA MK616 UT WOS:A1993MK61600002 PM 8287354 ER PT J AU HANKINS, GDV SATIN, AJ SEIKEN, GL BARTH, WH AF HANKINS, GDV SATIN, AJ SEIKEN, GL BARTH, WH TI CRITICAL CARE AND PREGNANCY SO CURRENT PROBLEMS IN OBSTETRICS GYNECOLOGY AND FERTILITY LA English DT Review AB Increasingly, women who are pregnant or who have recently been delivered are being admitted to intensive care units. The pregnant woman who requires intensive care medicine is unique for a number of reasons and represents a substantial challenge to the health care team because of these differences. In the critically ill pregnant woman there are at least two patients to be considered, the mother and the fetus. The pregnant woman has many physiologic adaptations as a consequence of pregnancy that will alter the definition of normal for a number of variables that are routinely monitored in intensive care units. Thus critical care obstetrics involves knowledge both of critical care medicine and of the pathophysiologic changes of pregnancy. Furthermore, pregnancy entails a host of disease processes that are unique to pregnancy itself, such as severe preeclampsia and amniotic fluid embolus. The purposes of this chapter are multiple. The physiologic changes of pregnancy are reviewed with emphasis on cardiorespiratory changes during pregnancy, circulatory changes in pregnancy, labor hemodynamics, postpartum hemodynamics, and pulmonary physiology as they apply to the parturient patient. Leading causes of maternal mortality including obstetric hemorrhage, hypertensive disease, and embolic phenomena are reviewed. Furthermore, the microangiopathic hemolytic anemias, thrombotic thrombocytopenic purpura, hemolytic uremic syndrome, and acute renal failure as they relate to the pregnant woman are reviewed in detail. Physical trauma that complicates one of every 12 pregnancies is emerging as a leading cause of nonobstetric maternal death. Both blunt abdominal trauma and penetrating trauma in the pregnant woman are discussed. Guidelines are given for the evaluation and treatment of the mother as well as for the evaluation and treatment of the fetus. Controversies related to maternal cardiac arrest and resuscitation in pregnancy are explored as well as die role of perimortem cesarean section in contemporary obstetrics. Finally, the fetal effects of various drugs commonly used in critical care medicine are reviewed. RP HANKINS, GDV (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 8756-0410 J9 CURR PROB OBST GYN F JI Curr. Probl. Obstet. Gynecol. Fertil. PD NOV-DEC PY 1993 VL 16 IS 6 BP 210 EP 249 PG 40 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA MP611 UT WOS:A1993MP61100001 ER PT J AU BROCK, IP BROWN, GR AF BROCK, IP BROWN, GR TI PSYCHIATRIC LENGTH OF STAY DETERMINANTS IN A MILITARY MEDICAL-CENTER SO GENERAL HOSPITAL PSYCHIATRY LA English DT Article ID DIAGNOSIS-RELATED GROUPS; PROSPECTIVE PAYMENT; HOSPITAL STAY; SEVERITY; ILLNESS; IMPACT; UNIT AB In this 2-year prospective study, 1040 consecutive admissions to an adult inpatient psychiatric unit of the United States Air Force's largest tertiary care medical center were assessed for length of stay (LOS) determinants. Twenty-one demographic, clinical, and diagnostic variables were examined for their effect on LOS. The median LOS at our medical center was 9 days and was similar to the national median LOS of 10 days for psychiatric units in general hospitals. We found several clinical, nonclinical, and diagnostic variables to be independent predictors of LOS, accounting for 31% of the variance, but that much of the variance remained unaccounted for. Primary DSM-III-R discharge diagnoses were helpful in distinguishing a nonoverlapping, short-stay group from a long-stay group. HCFA Diagnostic Related Group (DRG) estimates for LOS were assessed for their ability to predict LOS in our institution. With the exception of substance abuse/dependence disorders, DRGs consistently underestimated LOS. Previous studies using the coefficient of variation (COV) have demonstrated the inability of DRGs to distinguish homogeneous diagnostic groups. However, in this study, COV was helpful in differentiating a majority of DRGs by LOS despite the general underestimation of LOS by DRG. These results continue to support the inadequacy of the DRGs in determining equitable reimbursement and the difficulties in predicting psychiatric LOS despite the inclusion of clinical and nonclinical variables. C1 VET ADM MED CTR,JOHNSON CITY,TN. WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,LACKLAND AFB,TX 78236. E TENNESSEE STATE UNIV,JOHNSON CITY,TN 37614. NR 26 TC 13 Z9 13 U1 1 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0163-8343 J9 GEN HOSP PSYCHIAT JI Gen. Hosp. Psych. PD NOV PY 1993 VL 15 IS 6 BP 392 EP 398 DI 10.1016/0163-8343(93)90008-C PG 7 WC Psychiatry SC Psychiatry GA MM995 UT WOS:A1993MM99500008 PM 8112563 ER PT J AU MENENDEZ, AR CHENEY, FE ZUCLICH, JA CRUMP, P AF MENENDEZ, AR CHENEY, FE ZUCLICH, JA CRUMP, P TI PROBABILITY-SUMMATION MODEL OF MULTIPLE LASER-EXPOSURE EFFECTS SO HEALTH PHYSICS LA English DT Article DE LASERS; RADIATION, NONIONIZING; MODELING, BIOLOGICAL FACTORS; TISSUE, BODY ID PHOTOCOAGULATION AB A probability-summation model is introduced to provide quantitative criteria for discriminating independent from interactive effects of multiple laser exposures on biological tissue. Data that differ statistically from predictions of the probability-summation model indicate the action of sensitizing (synergistic/positive) or desensitizing (hardening/negative) biophysical interactions. Interactions are indicated when response probabilities vary with changes in the spatial or temporal separation of exposures. In the absence of interactions, probability-summation parsimoniously accounts for ''cumulative'' effects. Data analyzed using the probability-summation model show instances of both sensitization and desensitization of retinal tissue by laser exposures. Other results are shown to be consistent with probability-summation. The relevance of the probability-summation model to previous laser-bioeffects studies, models, and safety standards is discussed and an appeal is made for improved empirical estimates of response probabilities for single exposures. C1 ANALYT SCI CORP, SAN ANTONIO, TX 78212 USA. RP MENENDEZ, AR (reprint author), ARMSTRONG LAB, DIV OPT RADIAT, BROOKS AFB, TX 78235 USA. NR 27 TC 8 Z9 8 U1 0 U2 3 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 NOV PY 1993 VL 65 IS 5 BP 523 EP 528 DI 10.1097/00004032-199311000-00008 PG 6 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 ME861 UT WOS:A1993ME86100013 PM 8225989 ER PT J AU GILKEY, FW AF GILKEY, FW TI LIPOSCLEROSING MYXOFIBROUS TUMOR OF BONE SO HUMAN PATHOLOGY LA English DT Letter RP GILKEY, FW (reprint author), USAF,MALCOLM GROW MED CTR,SGHL,WASHINGTON,DC, USA. NR 3 TC 9 Z9 10 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0046-8177 J9 HUM PATHOL JI Hum. Pathol. PD NOV PY 1993 VL 24 IS 11 BP 1264 EP 1264 DI 10.1016/0046-8177(93)90226-7 PG 1 WC Pathology SC Pathology GA MK509 UT WOS:A1993MK50900019 PM 8244329 ER PT J AU PAXTON, AH SCHAUS, CF SRINIVASAN, ST AF PAXTON, AH SCHAUS, CF SRINIVASAN, ST TI SEMICONDUCTOR-LASER WITH REGROWN-LENS-TRAIN UNSTABLE RESONATOR - THEORY AND DESIGN SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID REFRACTIVE-INDEX; HIGH-POWER; OPERATION AB We derive the geometrical optical properties of the fundamental mode of the unstable resonator consisting of a train of weak cylindrical lenses and obtain expressions for the effective distributed loss and the increase in threshold current due to the beam expansion. These properties are the same as for the continuous unstable resonator with a quadratic lateral variation of the index of refraction, to a very good approximation. The wave aberration introduced by passage through the lenses and through the output facet is not severe for stripe widths up to 170 mu m. We discuss our rationale for selecting a specific transverse structure for the regrown-lens-train (RLT) laser and present the results of calculations of the waveguide modes and values of the effective index of refraction. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. EYEON CORP,TUALATIN,OR 97072. UNIV NEW MEXICO,CTR HIGH TECHNOL MAT,ALBUQUERQUE,NM 87131. RP PAXTON, AH (reprint author), USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117, USA. NR 27 TC 12 Z9 12 U1 2 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD NOV PY 1993 VL 29 IS 11 BP 2784 EP 2792 DI 10.1109/3.248937 PG 9 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA MQ441 UT WOS:A1993MQ44100010 ER PT J AU PYATI, VP AF PYATI, VP TI ON THE USE OF HILBERT TRANSFORM FOR PROCESSING MEASURED CW DATA - COMMENT SO IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY LA English DT Letter RP PYATI, VP (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 3 Z9 3 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9375 J9 IEEE T ELECTROMAGN C JI IEEE Trans. Electromagn. Compat. PD NOV PY 1993 VL 35 IS 4 BP 485 EP 485 DI 10.1109/15.247868 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA ML177 UT WOS:A1993ML17700015 ER PT J AU BAYRAKTAROGLU, B BARRETTE, J FITCH, R KEHIAS, L HUANG, CI NEIDHARD, R SCHERER, R AF BAYRAKTAROGLU, B BARRETTE, J FITCH, R KEHIAS, L HUANG, CI NEIDHARD, R SCHERER, R TI IIIA-5 THERMALLY-STABLE ALGAAS/GAAS MICROWAVE-POWER HBTS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Meeting Abstract C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD NOV PY 1993 VL 40 IS 11 BP 2112 EP 2113 DI 10.1109/16.239783 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA ME783 UT WOS:A1993ME78300057 ER PT J AU SACCHINI, JJ STEEDLY, WM MOSES, RL AF SACCHINI, JJ STEEDLY, WM MOSES, RL TI 2-DIMENSIONAL PRONY MODELING AND PARAMETER-ESTIMATION SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Article ID SPECTRAL ESTIMATION; ALGORITHM AB A new method for estimating the two-dimensional (2-D) exponential modes and amplitude coefficients in a Prony model is presented. This method involves two parts, each utilizing a 1-D singular value decomposition-based technique, and is capable of locating frequencies anywhere in the 2-D frequency plane. Simulations are shown which demonstrate the performance of the algorithm. C1 ANALYT SCI CORP,RESTON,VA 22090. OHIO STATE UNIV,DEPT ELECT ENGN,COLUMBUS,OH 43210. RP SACCHINI, JJ (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 29 TC 50 Z9 57 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 NOV PY 1993 VL 41 IS 11 BP 3127 EP 3137 DI 10.1109/78.257242 PG 11 WC Engineering, Electrical & Electronic SC Engineering GA MH408 UT WOS:A1993MH40800004 ER PT J AU BAGLEY, RL SWINNEY, DV GRIFFIN, KE AF BAGLEY, RL SWINNEY, DV GRIFFIN, KE TI FRACTIONAL ORDER CALCULUS MODEL OF THE GENERALIZED THEODORSEN FUNCTION SO JOURNAL OF AIRCRAFT LA English DT Note RP BAGLEY, RL (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 4 Z9 4 U1 0 U2 2 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 NOV-DEC PY 1993 VL 30 IS 6 BP 1003 EP 1005 DI 10.2514/3.46446 PG 3 WC Engineering, Aerospace SC Engineering GA ML016 UT WOS:A1993ML01600030 ER PT J AU SYLVIA, VL SCHWARTZ, Z SCHUMAN, L MORGAN, RT MACKEY, S GOMEZ, R BOYAN, BD AF SYLVIA, VL SCHWARTZ, Z SCHUMAN, L MORGAN, RT MACKEY, S GOMEZ, R BOYAN, BD TI MATURATION-DEPENDENT REGULATION OF PROTEIN-KINASE-C ACTIVITY BY VITAMIN-D(3) METABOLITES IN CHONDROCYTE CULTURES SO JOURNAL OF CELLULAR PHYSIOLOGY LA English DT Article ID ARACHIDONIC-ACID TURNOVER; CARTILAGE CELLS-INVITRO; OSTEO-SARCOMA CELLS; RESTING ZONE; GROWTH ZONE; ALKALINE-PHOSPHATASE; CALCIUM; 1,25-DIHYDROXYVITAMIN-D3; PHOSPHOLIPASE-A2; PROLIFERATION AB Vitamin D3 metabolites regulate the differentiation of chondrocytes isolated from the growth zone or resting zone of rat costochondral cartilage. Since some of the direct membrane effects of vitamin D metabolites are nongenomic, we hypothesized that protein kinase C (PKC) plays a role in signal transduction for these chondrocyte differentiation factors and that the regulation of PKC by the vitamin D metabolites is cell maturation dependent. Confluent, fourth passage cultures of growth zone and resting zone chondrocytes were treated with vitamin D, metabolites for up to 24 h, lysed, and cell extracts assayed for kinase activity using a specific PKC substrate peptide. The addition of 1,25-(OH)2D3 to growth zone cell cultures resulted in a rapid dose-dependent stimulation of PKC, significant at 10(-9)-10(-7) M, beginning at 3 min and sustained until 90 min; 1,25-(OH)2D3 had no effect on PKC activity in resting zone chondrocyte cultures. The addition of 24,25-(OH)2D3 to resting zone cultures showed a slower PKC activation, with significant stimulation seen at 90-360 min for 10(-8) - 10(-7) M 24,25-(OH)2D3. However, 24,25-(OH)2D3 had no effect on PKC activity in growth zone cell cultures at all times and concentrations examined. The specificity of PKC stimulation by the vitamin D, metabolites was verified using a specific pseudosubstrate region peptide inhibitor, which reduced PKC activity when included in the reaction mixture. Pretreatment of the cultures with U73,122, a phospholipase C inhibitor, decreased 1,25-(OH)2D3-stimulated PKC activity but had no effect upon 24,25-(OH)2D3-induced activity. The tyrosine kinase inhibitor, genistein, did not inhibit the PKC response in either vitamin D3 metabolites-treated culture. Neither actinomycin D nor cycloheximide affected 1,25-(OH)2D3-induced PKC activity in growth zone chondrocyte cultures, while both compounds inhibited 24,25-(OH)2D3-induced activity in resting zone chondrocyte cultures. The results of this study indicate that vitamin D metabolites stimulate PKC activity in a metabolite- and cell-maturation-specific manner. Effects of 1,25-(OH)2D3 appear to be nongenomic, whereas the effects of 24,25-(OH)2D3 probably involve a genomic mechanism. (C) 1993 Wiley-Liss, Inc. C1 HEBREW UNIV JERUSALEM, HADASSAH FAC DENT MED, DEPT PERIODONT, IL-91010 JERUSALEM, ISRAEL. WILFORD HALL USAF MED CTR, DEPT PERIODONT, LACKLAND AFB, TX 78236 USA. RP UNIV TEXAS, HLTH SCI CTR, DEPT ORTHOPAED, SAN ANTONIO, TX 78284 USA. FU NIDCR NIH HHS [DE-05937, DE-08603] NR 35 TC 97 Z9 97 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0021-9541 EI 1097-4652 J9 J CELL PHYSIOL JI J. Cell. Physiol. PD NOV PY 1993 VL 157 IS 2 BP 271 EP 278 DI 10.1002/jcp.1041570209 PG 8 WC Cell Biology; Physiology SC Cell Biology; Physiology GA ME671 UT WOS:A1993ME67100008 PM 8227160 ER PT J AU WISEMAN, FL RICE, AG AF WISEMAN, FL RICE, AG TI MODIFICATIONS TO THE ANGLE-DEPENDENT LINE OF NORMALS MODEL FOR GAS-PHASE REACTION-RATE CONSTANTS SO JOURNAL OF CHEMICAL EDUCATION LA English DT Article ID POTENTIAL-ENERGY SURFACE; TRANSITION-STATE THEORY; ABSOLUTE RATE; CL C1 USAF ACAD,DFC,COLORADO SPRINGS,CO 80840. NR 24 TC 5 Z9 5 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0021-9584 J9 J CHEM EDUC JI J. Chem. Educ. PD NOV PY 1993 VL 70 IS 11 BP 914 EP 920 PG 7 WC Chemistry, Multidisciplinary; Education, Scientific Disciplines SC Chemistry; Education & Educational Research GA MJ993 UT WOS:A1993MJ99300018 ER PT J AU LAVINE, BK STINE, AB MAYFIELD, H GUNDERSON, R AF LAVINE, BK STINE, AB MAYFIELD, H GUNDERSON, R TI APPLICATION OF HIGH-RESOLUTION COMPUTER-GRAPHICS TO PATTERN-RECOGNITION ANALYSIS SO JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES LA English DT Article AB False color data imaging has proven to be a powerful technique for the analysis and visualization of satellite data. This success suggests that high-resolution computer graphics can also play an important role in the analysis of multivariate data obtained from chemical instruments. The development of a graphics tool for visualization of multivariate data is described in this paper. The proposed graphics tool utilizes the fuzzy c-varieties clustering algorithm, principal components analysis and false color data imaging to generate maps of high informational density of the data space. The graphics tool has been tested successfully using data sets from the literature representative of the pattern recognition problems encountered by chemists. C1 RDVC,HEAD QUARTERS AFCESA,TYNDALL AFB,FL 32403. UTAH STATE UNIV,DEPT ELECT ENGN,LOGAN,UT 84322. RP LAVINE, BK (reprint author), CLARKSON UNIV,DEPT CHEM,POSTDAM,NY 13699, USA. NR 19 TC 7 Z9 7 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0095-2338 J9 J CHEM INF COMP SCI JI J. Chem. Inf. Comput. Sci. PD NOV-DEC PY 1993 VL 33 IS 6 BP 826 EP 834 DI 10.1021/ci00016a004 PG 9 WC Chemistry, Multidisciplinary; Computer Science, Information Systems; Computer Science, Interdisciplinary Applications SC Chemistry; Computer Science GA MJ988 UT WOS:A1993MJ98800004 ER PT J AU PERRAM, GP MASSMAN, DA DAVIS, SJ AF PERRAM, GP MASSMAN, DA DAVIS, SJ TI QUANTUM RESOLVED ROTATIONAL ENERGY-TRANSFER IN THE B (3)PI(0(U)(+)) STATE OF BR-2 SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID FRANCK-CONDON FACTORS; HALOGEN MOLECULES; COLLISIONAL DEACTIVATION; INELASTIC-COLLISIONS; LASER-EXCITATION; ANGULAR-MOMENTUM; EXCITED-STATES; BR2; HE; SYSTEM AB Steady-state spectrally resolved laser-induced fluorescence techniques have been used to study rotational energy transfer within the B 3PI(0u+) state of molecular bromine. Rate coefficients for electronic quenching and state-to-state rotational energy transfer within vibrational state v'=11 were determined for Br2, He, Ar, and Xe collision partners. The individual, state selective rotational transfer rate coefficients were an order of magnitude slower than electronic quenching rates. Electronic quenching is attributed to both collisional predissociation and energy transfer followed by rapid spontaneous predissociation. For Br2 (B, v'=11, J'=35) collisions with helium, population in the states J'=19-47 were observed and the resulting state-to-state rotational transfer rate coefficients ranged from 6.2 X 10(-11) to 6.5 X 10(-12) cm3/molecule s. Both exponential energy gap and statistical power gap laws for the scaling of rotational energy transfer rate coefficients with rotational energy are compared to the observed data. C1 PHYS SCI INC, ANDOVER, MA 01810 USA. RP PERRAM, GP (reprint author), USAF, INST TECHNOL, DEPT ENGN PHYS, WRIGHT PATTERSON AFB, OH 45433 USA. OI Perram, Glen/0000-0002-4417-3929 NR 37 TC 6 Z9 6 U1 1 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 NOV 1 PY 1993 VL 99 IS 9 BP 6634 EP 6641 DI 10.1063/1.465855 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA MD981 UT WOS:A1993MD98100045 ER PT J AU PITZER, EW AF PITZER, EW TI ANALYSES OF OXIDATIVE DECOMPOSITION PRODUCTS OF TRICRESYLPHOSPHATES USING A SYSTEM FOR THERMAL DIAGNOSTIC STUDIES (STDS) SO JOURNAL OF CHROMATOGRAPHIC SCIENCE LA English DT Article C1 WRIGHT LAB,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 4 TC 1 Z9 1 U1 0 U2 0 PU PRESTON PUBLICATIONS INC PI NILES PA 7800 MERRIMAC AVE PO BOX 48312, NILES, IL 60648 SN 0021-9665 J9 J CHROMATOGR SCI JI J. Chromatogr. Sci. PD NOV PY 1993 VL 31 IS 11 BP 474 EP 476 PG 3 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA MF713 UT WOS:A1993MF71300007 ER PT J AU ARMBRUSTER, DA SCHWARZHOFF, RH PIERCE, BL HUBSTER, EC AF ARMBRUSTER, DA SCHWARZHOFF, RH PIERCE, BL HUBSTER, EC TI METHOD COMPARISON OF EMIT-II AND ONLINE WITH RIA FOR DRUG SCREENING SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE TOXICOLOGY; DRUG SCREENING; CHEMICAL ANALYSIS; RIA; EMIT ID METABOLITE ASSAYS; CONFIRMATION AB The newest formulation of the EMIT assay for drugs of abuse, EMIT II, and a new immunoassay, OnLine, using the kinetic interaction of microparticles in solution methodology, were evaluated for marijuana, cocaine, opiates, barbiturates, and phencyclidine. Both types of immunoassays were performed on an Hitachi 717 analyzer. Calibration curves, the degree of separation between negative and cutoff calibrators, precision, probability of carryover from positive to negative samples, and overall ease and speed of analysis were evaluated. EMIT II and OnLine were compared with RIA tests for the five drugs to determine each assay's ability to detect samples which confirm positive by GC/MS. The RIA and OnLine marijuana tests detected >99% of confirmed positive samples while EMIT II detected about 90%. All three immunoassays performed equivalently for cocaine and opiates, each assay detecting at least 98% of positives. Barbiturates showed the greatest disparity with OnLine detecting 96%, EMIT II 85%, and RIA 79% of confirmed positive samples. Too few phencyclidine positive samples were detected for a method comparison study. The fully automated EMIT II and OnLine assays are preferable for a variety of reasons to our laboratory's current semi-automated RIA tests for large volume urine testing. The immunoassays offer comparable performance for some drugs but not for others. C1 USAF,ANALYT SCI BRANCH,BROOKS AFB,TX. USAF,RIA SECT,BROOKS AFB,TX. RP ARMBRUSTER, DA (reprint author), USAF,DRUG TESTING LAB,AL AOTQ 2601 WEST RD,SUITE 1,BROOKS AFB,TX 78235, USA. NR 8 TC 12 Z9 13 U1 0 U2 1 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 NOV PY 1993 VL 38 IS 6 BP 1326 EP 1341 PG 16 WC Medicine, Legal SC Legal Medicine GA MH369 UT WOS:A1993MH36900015 PM 8263477 ER PT J AU KNIPP, DJ EMERY, BA RICHMOND, AD CROOKER, NU HAIRSTON, MR CUMNOCK, JA DENIG, WF RICH, FJ DELABEAUJARDIERE, O RUOHONIEMI, JM RODGER, AS CROWLEY, G AHN, BH EVANS, DS FULLERROWELL, TJ FRIISCHRISTENSEN, E LOCKWOOD, M KROEHL, HW MACLENNAN, CG MCEWIN, A PELLINEN, RJ MORRIS, RJ BURNS, GB PAPITASHVILI, V ZAITZEV, A TROSHICHEV, O SATO, N SUTCLIFFE, P TOMLINSON, L AF KNIPP, DJ EMERY, BA RICHMOND, AD CROOKER, NU HAIRSTON, MR CUMNOCK, JA DENIG, WF RICH, FJ DELABEAUJARDIERE, O RUOHONIEMI, JM RODGER, AS CROWLEY, G AHN, BH EVANS, DS FULLERROWELL, TJ FRIISCHRISTENSEN, E LOCKWOOD, M KROEHL, HW MACLENNAN, CG MCEWIN, A PELLINEN, RJ MORRIS, RJ BURNS, GB PAPITASHVILI, V ZAITZEV, A TROSHICHEV, O SATO, N SUTCLIFFE, P TOMLINSON, L TI IONOSPHERIC CONVECTION RESPONSE TO SLOW, STRONG VARIATIONS IN A NORTHWARD INTERPLANETARY MAGNETIC-FIELD - A CASE-STUDY FOR JANUARY 14, 1988 SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID HIGH-LATITUDE IONOSPHERE; MAPPING ELECTRODYNAMIC FEATURES; AURORAL ELECTROJET INDEXES; INCOHERENT-SCATTER RADAR; DEPENDENT PLASMA-FLOW; ALIGNED CURRENTS; LOCALIZED OBSERVATIONS; DAYSIDE MAGNETOSPHERE; BIRKELAND CURRENTS; MAGNETOMETER DATA AB We analyze ionospheric convection patterns over the polar regions during the passage of an interplanetary magnetic cloud on January 14, 1988, when the interplanetary magnetic field (IMF) rotated slowly in direction and had a large amplitude. Using the assimilative mapping of ionospheric electrodynamics (AMIE) procedure, we combine simultaneous observations of ionospheric drifts and magnetic perturbations from many different instruments into consistent patterns of high-latitude electrodynamics, focusing on the period of northward IMF. By combining satellite data with ground-based observations, we have generated one of the most comprehensive data sets yet assembled and used it to produce convection maps for both hemispheres. We present evidence that a lobe convection cell was embedded within normal merging convection during a period when the IMF B(y) and B(z) components were large and positive. As the IMF became predominantly northward, a strong reversed convection pattern (afternoon-to-morning potential drop of around 100 kV) appeared in the southern (summer) polar cap, while convection in the northern (winter) hemisphere became weak and disordered with a dawn-to-dusk potential drop of the order of 30 kV. These patterns persisted for about 3 hours, until the IMF rotated significantly toward the west. We interpret this behavior in terms of a recently proposed merging model for northward IMF under solstice conditions, for which lobe field lines from the hemisphere tilted toward the Sun (summer hemisphere) drape over the dayside magnetosphere, producing reverse convection in the summer hemisphere and impeding direct contact between the solar wind and field lines connected to the winter polar cap. The positive IMF B(x) component present at this time could have contributed to the observed hemispheric asymmetry. Reverse convection in the summer hemisphere broke down rapidly after the ratio \B(y)/B(z)\ exceeded unity, while convection in the winter hemisphere strengthened. A dominant dawn-to-dusk potential drop was established in both hemispheres when the magnitude of B(y) exceeded that of B(z), with potential drops of the order of 100 kV, even while B(z) remained northward. The later transition to southward B(z) produced a gradual intensification of the convection, but a greater qualitative change occurred at the transition through \B(y)/B(z)\ = 1 than at the transition through B(z) = 0. The various convection patterns we derive under northward IMF conditions illustrate all possibilities previously discussed in the literature: nearly single-cell and multicell, distorted and symmetric, ordered and unordered, and sunward and antisunward. C1 KYUNGPOOK NATL UNIV, TAEGU, SOUTH KOREA. AUSTRALIAN ANTARCTIC DIV, KINGSTON, TAS, AUSTRALIA. UNIV CALIF LOS ANGELES, DEPT ATMOSPHER SCI, LOS ANGELES, CA 90032 USA. JOHNS HOPKINS UNIV, APPL PHYS LAB, LAUREL, MD 20723 USA. UNIV TEXAS, RICHARDSON, TX 75080 USA. SRI INT, MENLO PK, CA USA. PHILLIPS LAB, BEDFORD, MA 01730 USA. NCAR, HIGH ALTITUDE OBSERV, BOULDER, CO 80307 USA. NOAA, SPACE ENVIRONM LAB, BOULDER, CO 80303 USA. DANISH METEOROL INST, COPENHAGEN, DENMARK. NATL GEOPHYS DATA CTR, BOULDER, CO 80303 USA. RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND. AT&T BELL LABS, MURRAY HILL, NJ 07974 USA. BUR MINERAL RESOURCES, CANBERRA, AUSTRALIA. IZMIRAN, TROITSK, RUSSIA. FINNISH METEOROL INST, HELSINKI, FINLAND. NATL INST POLAR RES, TOKYO, JAPAN. HERMANUS MAGNET OBSERV, HERMANUS, SOUTH AFRICA. INST GEOL & NUCL SCI LTD, CHRISTCHURCH, NEW ZEALAND. ST PETERSBURG ARCTIC & ANTARCTIC RES INST, ST PETERSBURG, RUSSIA. BRITISH ANTARCTIC SURVEY, CAMBRIDGE CB3 0ET, ENGLAND. RP KNIPP, DJ (reprint author), USAF ACAD, DEPT PHYS, COLORADO SPRINGS, CO 80840 USA. RI Lockwood, Mike/G-1030-2011; Sutcliffe, Peter/E-8124-2014 OI Lockwood, Mike/0000-0002-7397-2172; NR 76 TC 88 Z9 88 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD NOV 1 PY 1993 VL 98 IS A11 BP 19273 EP 19292 DI 10.1029/93JA01010 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MG097 UT WOS:A1993MG09700036 ER PT J AU HALL, CD AF HALL, CD TI AVERAGING OF 2ND-ORDER HAMILTONIAN OSCILLATORS WITH A SLOWLY VARYING PARAMETER SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Correction, Addition RP HALL, CD (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD NOV-DEC PY 1993 VL 16 IS 6 BP 1199 EP 1199 DI 10.2514/3.56619 PG 1 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA MF998 UT WOS:A1993MF99800035 ER PT J AU NEWSOME, RD DITZLER, T AF NEWSOME, RD DITZLER, T TI ASSESSING ALCOHOLIC DENIAL - FURTHER EXAMINATION OF THE DENIAL RATING-SCALE SO JOURNAL OF NERVOUS AND MENTAL DISEASE LA English DT Article AB The reliability, validity, and heuristic value of Goldsmith and Green's (J. Nerv. Ment. Dis. 176:614-620, 1988) Denial Rating Scale (DRS) are examined in an inpatient treatment setting. This replication study includes 647 cases. The same strong relationship between clinical change and program completion as found by Goldsmith and Green is identified. An ordinal predictive validity for the DRS regarding program completion that was not found by Goldsmith and Green is also identified. Utility for improving patient treatment plans through DRS results is identified. The heuristic value of the DRS in helping an alcoholism counseling staff maintain treatment focus is discussed. It is recommended that treatment centers incorporate systematic assessment of denial over the course of treatment as a means to facilitate staff focus on the primacy of addiction. C1 SCOTT MED CTR,SCOTT AFB,IL 62225. TRIPLER ARMY MED CTR,TRISERV ALCOHOLISM RECOVERY FACIL,HONOLULU,HI 96859. NR 4 TC 6 Z9 6 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-3018 J9 J NERV MENT DIS JI J. Nerv. Ment. Dis. PD NOV PY 1993 VL 181 IS 11 BP 689 EP 694 DI 10.1097/00005053-199311000-00007 PG 6 WC Clinical Neurology; Psychiatry SC Neurosciences & Neurology; Psychiatry GA MG197 UT WOS:A1993MG19700007 PM 8228951 ER PT J AU WYLAM, JM MEALEY, BL MILLS, MP WALDROP, TC MOSKOWICZ, DC AF WYLAM, JM MEALEY, BL MILLS, MP WALDROP, TC MOSKOWICZ, DC TI THE CLINICAL EFFECTIVENESS OF OPEN VERSUS CLOSED SCALING AND ROOT PLANING ON MULTI-ROOTED TEETH SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE TOOTH ROOT; MOLAR; PLANING; SCALING; FURCATION THERAPY ID NONSURGICAL PERIODONTAL THERAPY; SUBGINGIVAL PLAQUE CONTROL; CALCULUS REMOVAL; ORAL HYGIENE; INSTRUMENTATION; DISEASE; 4-YEAR; HUMANS; HAND AB SCALING AND ROOT PLANING ARE THE MOST COMMON techniques utilized to achieve a biologically-acceptable root surface. Thorough root debridement is a demanding task, with residual deposits of plaque and calculus a not uncommon finding after instrumentation. This study evaluated the effectiveness of scaling and root planing via a closed versus an open flap approach. Sixty multi-rooted teeth were assigned to one of three groups: untreated controls, closed scaling/root planing, and open flap scaling/root planing. Following debridement, teeth were extracted, immersed in methylene blue, and examined for the percent surface area having stainable residual deposits. The mean percent stained surface area covered by residual plaque and calculus was 54.3% in the closed loot planing group compared to 33.0% in the open flap root planing group. The untreated control teeth had 91.0% of the root surface covered with stainable deposits. Within-group comparisons showed no significant difference in the percent stained residual plaque and calculus in shallow areas of the pocket (less than or equal to 3 mm apical to the gingival margin) compared to deeper areas (> 3 mm subgingival). Examination of furcation regions demonstrated heavy residual stainable deposits for both treatment methods, with no significant differences between techniques. There was no correlation between the time spent in root debridement and the percent residual deposit area. The results demonstrate that hand instrumentation alone is inadequate for thorough debridement of furcations and suggest that new approaches are needed to provide a root surface which is compatible with formation of new periodontal attachment. High frequency ultrasonic instruments, rotary burs, and chemical agents may assist in debridement of such surfaces. Further evaluation of these and other novel approaches to root debridement are needed. RP WYLAM, JM (reprint author), WILFORD HALL USAF MED CTR,DST,DEPT PERIODONT,2450 PEPPERRELL ST,LACKLAND AFB,TX 78236, USA. NR 33 TC 34 Z9 34 U1 1 U2 3 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD NOV PY 1993 VL 64 IS 11 BP 1023 EP 1028 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA ML644 UT WOS:A1993ML64400002 PM 8295086 ER PT J AU WALDROP, TC SEMBA, SE AF WALDROP, TC SEMBA, SE TI CLOSURE OF OROANTRAL COMMUNICATION USING GUIDED TISSUE REGENERATION AND AN ABSORBABLE GELATIN MEMBRANE SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE FISTULA, OROANTRAL/THERAPY; GUIDED TISSUE; REGENERATION; MEMBRANES, ARTIFICIAL; GRAFTS, SURGERY; BONE REGENERATION; POLYTETRAFLUOROETHYLENE/THERAPEUTIC USE ID BONE-GRAFT MATERIALS; DEFECTS; AUTOGRAFTS; ALLOGRAFTS; MAXILLARY AB SURGICAL INTERVENTION INTO THE MAXILLARY POSTERIOR area can lead to inadvertent communication with the maxillary sinus. Spontaneous healing of 1 to 2 mm openings can occur. However, in patients with larger oroantral communications and those with a history of sinus disease, surgical closure is often indicated. Acute and chronic oroantral fistula and sinusitis can occur as a result of inadequate treatment. The most common causes of complications include inadequate site preparation, flap closure, nap necrosis, infection, and patient non-compliance. A technique for the closure of oroantral communications using guided tissue regeneration is described. This technique utilizes an absorbable gelatin film (membrane), allogenic bone graft material (DFDBA), and nonresorbable expanded polytetrafluoroethylene (ePTFE) membrane. The gelatin membrane prevents displacement of graft material into the antrum and sinus epithelial cell migration, while the ePTFE membrane promotes selective cell population with subsequent regeneration of the osseous wall of the oroantral defect. C1 NINTH MED GRP,DEPT PERIODONT,BEALE AFB,CA. RP WALDROP, TC (reprint author), WILFORD HALL USAF MED CTR,DST,DEPT PERIODONT,2450 PEPPERRELL ST,LACKLAND AFB,TX 78236, USA. NR 48 TC 22 Z9 24 U1 0 U2 0 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD NOV PY 1993 VL 64 IS 11 BP 1061 EP 1066 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA ML644 UT WOS:A1993ML64400007 PM 8295091 ER PT J AU WANG, CS BURKETT, J LEE, CYC ARNOLD, FE AF WANG, CS BURKETT, J LEE, CYC ARNOLD, FE TI STRUCTURE AND ELECTRICAL-CONDUCTIVITY OF ION-IMPLANTED RIGID-ROD AND LADDER POLYMERS SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS LA English DT Article DE ION IMPLANTATION; RIGID-ROD POLYMER; POLY(P-PHENYLENE BENZOBISTHIAZOLE); POLY(P-PHENYLENE BENZOBISOXAZOLE); RIGID-ROD PSEUDO-LADDER POLYMER; POLY(P-(2,5 DIHYDROXY) PHENYLENE BENZOBISTHIAZOLE); POLY(P-(2,5-DIHYDROXY)PHENYLENE BENZOBISOXAZOLE); POLY(P-(2,5-DIHYDROXY)PHENYLENE BENZOBISIMIDAZOLE); LADDER POLYMER; POLY(BENZIMIDAZOBENZOPHENANTHROLINE); ELECTRICAL CONDUCTIVITY; MOLECULAR STRUCTURE EFFECT; MOLECULAR ORIENTATION EFFECT AB Isotropic and oriented thin films of rigid-rod, rigid-rod pseudo-ladder, and ladder polymers were ion-bombarded with Kr-84+ to a dose of 4 X 10(16) ions/cm2. The bombardment was conducted at two conditions: one at 190 keV energy with 0.12 muA/cm2 current density and the other at 200 keV energy with 2.0 muA/cm2 current density. With the low current density, the polymers developed a uniform ion-bombarded layer of about 0.35 mum at the surface. This layer showed an electrical conductivity on the order of 10(-3)/cm at ambient conditions, an enhancement of 6 to 9 orders of magnitude from the pristine polymers. The enhanced conductivity was found to decrease to 10(-6) s/cm after the implanted krypton was removed by heating under reduced pressure. It suggests that the enhanced conductivity was due to a synergistic effect of structural change of the polymers and chemical doping by the implanted ions. With the high current density, most polymer films, except that of rigid-rod pseudo-ladder poly (p-(2,5-dihydroxy) phenylene benzobisthiazole) (DPBT), developed an additional fibrous network structure over the uniform ion-bombarded layer. The comparable conductivity, 53 to 157 s/cm, measured for the various ion-bombarded films indicated that neither the molecular structure, rigid-rod or ladder, nor the molecular packing order, isotropic or oriented, constituted significant effect on the conductivity of ion-bombarded polymers. Since krypton could not be detected in the polymers ion-bombarded with high current density, the enhanced conductivity was attributed to the structural change of the polymers. The DPBT films ion-bombarded with high current density showed holes of micron size, probably due to the decomposition of hydroxy pendents from the rigid-rod backbone. (C) 1993 John Wiley & Sons, Inc. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP WANG, CS (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 18 TC 8 Z9 9 U1 1 U2 11 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0887-6266 J9 J POLYM SCI POL PHYS JI J. Polym. Sci. Pt. B-Polym. Phys. PD NOV PY 1993 VL 31 IS 12 BP 1799 EP 1807 DI 10.1002/polb.1993.090311213 PG 9 WC Polymer Science SC Polymer Science GA MC615 UT WOS:A1993MC61500013 ER PT J AU RIECHEL, TL WILKES, JS AF RIECHEL, TL WILKES, JS TI THE LEWIS ACIDITY OF ROOM-TEMPERATURE CHLOROALUMINATE MOLTEN-SALTS BUFFERED WITH SODIUM-CHLORIDE SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID IONIC LIQUIDS; ELECTROCHEMISTRY; PROTONS AB The electrochemistry of a NaCl-buffered, MEICl/AICl3 (MEICl = 1-methyl-3-ethylimidazolium chloride) melt was studied using Pt and W electrodes. When excess NaCl is added to an N = 0.55 melt (N = the mole fraction AlCl3) a neutral melt results, saturated with NaCl. The cyclic voltammetry shows several small overlapping reduction peaks which lead to a small, but distinct oxidation peak about -0.1 V (vs. an Al/Al3+ N = 0. 6 melt reference). Comparison to the voltammogram of an N = 0.5002 melt (no NaCl) suggests that the oxidation process is aluminum stripping. A series of plating and stripping experiments and scanning electron microscopic (SEM) examination of the electrode surfaces verify this. The presence of the Al stripping peak in the voltammogram of the buffered melt means that this melt is still slightly Lewis acidic even when saturated with NaCl. The concentration of Al2Cl7- in the buffered melt is estimated to be 2.8 x 10(-3) M. This is considerably higher than the calculated equilibrium concentration for Al2Cl7- of 4.6 x 10(-8) M corresponding to a truly Lewis natural melt. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 12 TC 12 Z9 12 U1 2 U2 9 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 NOV PY 1993 VL 140 IS 11 BP 3104 EP 3107 DI 10.1149/1.2220993 PG 4 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA MG873 UT WOS:A1993MG87300014 ER PT J AU KEARSE, WS SEAY, TM THOMPSON, IM AF KEARSE, WS SEAY, TM THOMPSON, IM TI THE LONG-TERM RISK OF DEVELOPMENT OF PROSTATE-CANCER IN PATIENTS WITH BENIGN PROSTATIC HYPERPLASIA - CORRELATION WITH STAGE-A1 DISEASE SO JOURNAL OF UROLOGY LA English DT Article DE PROSTATE; PROSTATIC NEOPLASMS; PROSTATIC HYPERTROPHY ID EXTENDED FOLLOW-UP; CARCINOMA; PROGNOSIS; ADENOCARCINOMA; GRADE AB Although historical data generally attest to a relatively benign course for stage A1 prostate cancer, at least some recent studies suggest that with prolonged followup patients have a significant risk of disease progression. This study was done with the hypothesis that such disease progression is a function of patient age and close, prolonged followup, and not the mere presence of stage A1 disease. A total of 304 patients who underwent transurethral resection of the prostate for histologically confirmed benign prostatic hyperplasia was reviewed, with a minimum followup of 8 years. Of 269 patients with full followup data 187 (70%) are alive without prostate cancer and 61 (23%) died without development of the disease. A total of 21 patients (7.8%) had clinically apparent prostate cancer at a mean of 7.0 years following transurethral resection, of whom 3 (14%) died of prostate cancer and 1 died of other causes. These data suggest that the risk of progression and death from prostate cancer may not be significantly greater in patients with stage A1 disease than in those reported to have benign disease at transurethral prostatectomy. C1 USAF,WILFORD HALL MED CTR,SAN ANTONIO,TX. RP KEARSE, WS (reprint author), BROOKE ARMY MED CTR,DEPT UROL,SAN ANTONIO,TX, USA. NR 19 TC 7 Z9 8 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD NOV PY 1993 VL 150 IS 5 BP 1746 EP 1748 PN 2 PG 3 WC Urology & Nephrology SC Urology & Nephrology GA MC578 UT WOS:A1993MC57800040 PM 7692112 ER PT J AU MIKKELSEN, SL ROOT, CF AF MIKKELSEN, SL ROOT, CF TI COMPARISON OF THERAPEUTIC DRUG-MONITORING ASSAYS SO LABORATORY MEDICINE LA English DT Article AB Clinical chemistry laboratories can choose from several immunoassay methods for therapeutic drug monitoring (TDM). We evaluated 11 new fluorescence polarization TDM assays manufactured by Roche Diagnostic Systems (Montclair, NJ) and Abbott Laboratories (Abbott Park, Ill). These assays were performed on the Roche Cobas FARA II (Roche Diagnostic Systems) random-access centrifugal analyzer, and their results were correlated with those obtained using an existing Abbott TDx batch analyzer (Abbott Laboratories) . Our study indicated that using the Cobas FARA II random-access analyzer in lieu of the Abbott TDx batch analyzer yields comparable TDM results and significantly reduces operator time and reagent costs. RP MIKKELSEN, SL (reprint author), USAF,BSC,WILFORD HALL MED CTR,PSLCC,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CLIN PATHOLOGISTS PI CHICAGO PA 2100 W HARRISON ST, CHICAGO, IL 60612 SN 0007-5027 J9 LAB MED JI Lab. Med. PD NOV PY 1993 VL 24 IS 11 BP 729 EP 731 PG 3 WC Medical Laboratory Technology SC Medical Laboratory Technology GA MD469 UT WOS:A1993MD46900007 ER PT J AU PARSONS, DS GREENE, BA AF PARSONS, DS GREENE, BA TI A TREATMENT FOR PRIMARY CILIARY DYSKINESIA - EFFICACY OF FUNCTIONAL ENDOSCOPIC SINUS SURGERY SO LARYNGOSCOPE LA English DT Article ID IMMOTILE-CILIA; KARTAGENERS SYNDROME; ARMS AB Primary ciliary dyskinesia (PCD) is an inherited disorder manifested in children as chronic otomastoiditis, recurrent pneumonia, and chronic sinusitis. The failure of the ciliary beat pattern to effectively function in the respiratory tract produces stasis of secretions with secondary inflammation, edema, and infection. The authors report three young children with PCD who presented with variable severities of symptoms. Each had the aforementioned respiratory tract problems. The child with the most severe symptomatology was treated with a variety of medical options, including long-term gamma globulin injections, but hospitalizations persisted twice per month because of severe sinopulmonary illness. All three of the children underwent functional endoscopic sinus surgery (FESS). In addition, two children received pressure equalization (PE) tubes. One child required a revision procedure. Their surgical outcomes are discussed. Follow-up of FESS in three children with this disorder shows a marked improvement in symptomatology with a decreased incidence of hospitalization and a somewhat decreased need for medical therapy. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 19 TC 28 Z9 31 U1 0 U2 2 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD NOV PY 1993 VL 103 IS 11 BP 1269 EP 1272 PN 1 PG 4 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA MG368 UT WOS:A1993MG36800010 PM 8231581 ER PT J AU PUFFER, RL AF PUFFER, RL TI A DEMOCRACY AT WAR - AMERICA FIGHT AT HOME AND ABROAD IN WORLD-WAR-II - ONEILL,WL SO LIBRARY JOURNAL LA English DT Book Review RP PUFFER, RL (reprint author), USAF,HIST PROG,LOS ANGELES,CA, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD NOV 1 PY 1993 VL 118 IS 18 BP 114 EP 114 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA ME965 UT WOS:A1993ME96500175 ER PT J AU WILSON, KW WILSON, MR MCGLASSON, DL AF WILSON, KW WILSON, MR MCGLASSON, DL TI SERUM ENDOTOXIN, TUMOR-NECROSIS-FACTOR, AND INTERLEUKIN-6 RESPONSE TO TOTAL HIP-ARTHROPLASTY SO MILITARY MEDICINE LA English DT Article AB The purpose of this study was to determine if endotoxin, tumor necrosis factor (TNF), and interleukin 6 (IL-6) increased in patients during or after total hip arthroplasty. Endotoxin is absorbed from the gut lumen and stimulates macrophages to make TNF. TNF is one of the stimuli for the increased production of IL-6. All three entities cause fever. If an increase takes place in any of the three, it could contribute to the commonly observed postop fever in total hip patients. Five serum samples were obtained from 12 patients: preoperatively; after the acetabular component was seated intraoperatively; in the recovery room; day 1 postoperatively; and day 3 postoperatively. IL-6 and TNF were measured using monoclonal antibody tests and endotoxin was measured with a chromogenic limulus amoebocyte lysate assay. A statistically significant increase in all three parameters was demonstrated. Endotoxin peaked intraoperatively or in the recovery room, TNF tended to peak in the recovery room, and the peak in IL-6 was more variable. Ten patients had a concomitant postoperative fever. RP WILSON, KW (reprint author), WILFORD HALL USAF MED CTR,SG2-EX,2200 BERGQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 9 Z9 10 U1 0 U2 2 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD NOV PY 1993 VL 158 IS 11 BP 712 EP 716 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA MH568 UT WOS:A1993MH56800011 PM 8284058 ER PT J AU MCMANAMON, PF WATSON, EA DORSCHNER, TA BARNES, LJ AF MCMANAMON, PF WATSON, EA DORSCHNER, TA BARNES, LJ TI APPLICATIONS LOOK AT THE USE OF LIQUID-CRYSTAL WRITABLE GRATINGS FOR STEERING PASSIVE RADIATION SO OPTICAL ENGINEERING LA English DT Article DE ACQUISITION; TRACKING; POINTING; LASER BEAM STEERING; BROAD-BAND BEAM STEERING; MICROSCAN; STARING ARRAYS AB Liquid crystal writable grating technology is being developed for beam steering in laser radar systems. We consider the ability of writable gratings to steer broad-spectral-band radiation for use in passive sensors. We find that there is potential for these devices in microscan systems because there is little or no dispersion for the small scan angles required in microscanning. The dispersion that is present is less than the resolution of the sensor considered here. For large angle steering we find that dispersion correction or a narrowing of the spectral bandwidth is required. The degradation in sensitivity resulting from narrowing the spectral bandwidth is considered. We find that a high-quantum-efficiency step-stare sensor with a two-dimensional focal plane array responsive over a narrow spectral width can achieve the same sensitivity as current linear scanning sensors while being able to steer the field of view (FOV) over a larger field of regard with no moving parts. Approaches for dispersion correction and postdetection correction are discussed. A promising approach for steering a narrow FOV with broad spectral content and good resolution is described. C1 RAYTHEON CO,DIV RES,LEXINGTON,MA 02173. UNIV DAYTON,CTR ELECTROOPT,DAYTON,OH 45469. RP MCMANAMON, PF (reprint author), WRIGHT LAB,WL AARI2,BLDG 622,3109 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 69 Z9 72 U1 0 U2 0 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1993 VL 32 IS 11 BP 2657 EP 2664 DI 10.1117/12.148094 PG 8 WC Optics SC Optics GA MG773 UT WOS:A1993MG77300004 ER PT J AU WATSON, EA AF WATSON, EA TI ANALYSIS OF BEAM-STEERING WITH DECENTERED MICROLENS ARRAYS SO OPTICAL ENGINEERING LA English DT Article DE ACQUISITION; TRACKING; POINTING; BEAM STEERING; SCANNING; MICROLENS ARRAYS AB A cascade of microlens arrays that are decentered with respect to each other is one potential method for beam steering; the magnitude of the steering depends on the amount of decenter. A simple, heuristic geometric analysis is presented that suggests that the output of the arrays is analogous to a blazed grating. The periodic nature of the exiting wavefront restricts allowed steering angles to values determined by the element-to-element spacing of the microlens arrays. The efficiency of steering into a desired mode of the grating is determined both by the amount of decenter of the microlens arrays and the fill factor at the output of the arrays. It is shown that maximum fill factor is desired, which can be achieved through the addition of a microlens array that acts like a field lens. Assumptions are identified under which the grating nature of the output can be predicted using Fresnel diffraction theory. Future work in the area of microlens beam steering is suggested. RP WATSON, EA (reprint author), WRIGHT LAB,ELECTROOPT BRANCH,WL AARI2 BLDG 622,3109 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 38 Z9 38 U1 0 U2 5 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1993 VL 32 IS 11 BP 2665 EP 2670 DI 10.1117/12.148100 PG 6 WC Optics SC Optics GA MG773 UT WOS:A1993MG77300005 ER PT J AU SALISBURY, MS MCMANAMON, PF DUNCAN, BD AF SALISBURY, MS MCMANAMON, PF DUNCAN, BD TI SENSITIVITY IMPROVEMENT OF A 1-MU-M LADAR SYSTEM INCORPORATING AN OPTICAL-FIBER PREAMPLIFIER SO OPTICAL ENGINEERING LA English DT Article DE ACQUISITION; TRACKING; POINTING; LADAR; LASER RADARS; FIBER AMPLIFIERS; SNR ID AMPLIFIERS AB In an effort to increase the SNR of a continuous wave, 1-mu m all solid state ladar system, a rare-earth-doped optical fiber amplifier is investigated as a preamplifier for radar return signals. The experimental system is detailed and a theoretical analysis of the fiber amplifier's effect on both heterodyne and direct detection schemes is provided. Beginning with the optical powers incident on the detector, the signal and noises are analyzed, through the detector electronics, to predict the SNR. The SNR is then plotted as a function of the return signal power, and a SNR threshold is defined to determine a minimum detectable signal power. The return signals required to attain the SNR threshold are then compared for four cases: direct detection with and without the fiber amplifier and heterodyne detection with and without the fiber amplifier. For the direct detection scheme considered, our results predict a sensitivity increase of 20.6 dB with the addition of the fiber amplifier, yet for heterodyne detection the predicted sensitivity increase is only 3.1 dB. C1 UNIV DAYTON,CTR ELECTROOPT,DAYTON,OH 45469. WRIGHT LAB,ELECTROOPT SENSORS GRP,AARI2,WRIGHT PATTERSON AFB,OH 45433. NR 12 TC 7 Z9 7 U1 1 U2 1 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1993 VL 32 IS 11 BP 2671 EP 2680 DI 10.1117/12.148106 PG 10 WC Optics SC Optics GA MG773 UT WOS:A1993MG77300006 ER PT J AU OVERBECK, JA MARK, MB MCCRACKEN, SH MCMANAMON, PF DUNCAN, BD AF OVERBECK, JA MARK, MB MCCRACKEN, SH MCMANAMON, PF DUNCAN, BD TI COHERENT VERSUS INCOHERENT LADAR DETECTION AT 2.09-MU-M SO OPTICAL ENGINEERING LA English DT Article DE ACQUISITION; TRACKING; POINTING; COHERENT DETECTION; INCOHERENT DETECTION; EYE SAFETY; SOLID STATE LADAR AB A 2.09-mu m ladar system is built to compare coherent to incoherent detection. The 2.09-mu m wavelength is of interest because of its high atmospheric transmission and because it is eyesafe. The 2.09-mu m system presented is capable of either a coherent or incoherent operational mode, is tunable in a small region around 2.09 mu m, and is being used to look at the statistical nature of the ladar return pulses for typical glint and speckle targets. To compare coherent to incoherent detection the probability of detection is investigated as the primary performance criterion of interest. The probability of detection is dependent on both the probability of false alarm and the probability density function, representing the signal current output from the detector. These probability distributions are different for each detection technique and for each type of target. Furthermore, the probability of detection and the probability of false alarm are both functions of the dominating noise source(s) in the system. A description of the theoretical expectations of this system along with the setup of the ladar system and how it is being used to collect data for both coherent and incoherent detection is presented. C1 UNIV DAYTON,CTR ELECTROOPT,DAYTON,OH 45469. WRIGHT LAB,ELECTROOPT SENSORS GRP,AARI2,WRIGHT PATTERSON AFB,OH 45433. NR 17 TC 7 Z9 7 U1 0 U2 1 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1993 VL 32 IS 11 BP 2681 EP 2689 DI 10.1117/12.148109 PG 9 WC Optics SC Optics GA MG773 UT WOS:A1993MG77300007 ER PT J AU AWWAL, AAS POWER, GJ AF AWWAL, AAS POWER, GJ TI OBJECT TRACKING BY AN OPTOELECTRONIC INNER-PRODUCT COMPLEX NEURAL-NETWORK SO OPTICAL ENGINEERING LA English DT Article DE ACQUISITION; TRACKING; POINTING; NEURAL NETWORK; ASSOCIATIVE MEMORY; MOTION ANALYSIS; PATTERN RECOGNITION; OPTICAL INFORMATION PROCESSING; OPTICAL COMPUTING ID PHASE-ONLY FILTER; RECOGNITION AB A complex associative memory model based on a neural network architecture is proposed for tracking three-dimensional objects in a dynamic environment. The storage representation of the complex associative memory model is based on an efficient amplitude-modulated phase-only matched filter. The input to the memory is derived from the discrete Fourier transform of the edge coordinates of the to-be-recognized moving object, where the edges are obtained through motion-based segmentation of the image scene. An adaptive threshold is used during the decision-making process to indicate a match or identify a mismatch. Computer simulation on real-world data proves the effectiveness of the proposed model. The proposed scheme is readily amenable to optoelectronic implementation. C1 WRIGHT PATTERSON AIR FORCE BASE,WRIGHT LABS,DAYTON,OH 45433. RP AWWAL, AAS (reprint author), WRIGHT STATE UNIV,DAYTON,OH 45435, USA. NR 13 TC 7 Z9 7 U1 0 U2 0 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1993 VL 32 IS 11 BP 2782 EP 2787 DI 10.1117/12.148110 PG 6 WC Optics SC Optics GA MG773 UT WOS:A1993MG77300019 ER PT J AU ROCKWELL, BA ROACH, WP ROGERS, ME MAYO, MW TOTH, CA CAIN, CP NOOJIN, GD AF ROCKWELL, BA ROACH, WP ROGERS, ME MAYO, MW TOTH, CA CAIN, CP NOOJIN, GD TI NONLINEAR REFRACTION IN VITREOUS-HUMOR SO OPTICS LETTERS LA English DT Article AB We extend the application of the z-scan technique to determine the nonlinear refractive index (n(2)) for human and rabbit vitreous humor, water, and physiological saline. In these measurements there were nonlinear contributions to the measured signal from the aqueous samples and the quartz cell that held the sample. Measurements were made with 60-ps pulses at 532 nm. To our knowledge, this is the first measurement of the nonlinear refractive properties of biological material. C1 KRUG LIFE SCI,SAN ANTONIO,TX 78216. RP ROCKWELL, BA (reprint author), ARMSTRONG LAB,8111 18TH ST,BROOKS AFB,TX 78235, USA. RI toth, cynthia/F-5614-2011 NR 9 TC 16 Z9 16 U1 0 U2 5 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD NOV 1 PY 1993 VL 18 IS 21 BP 1792 EP 1794 DI 10.1364/OL.18.001792 PG 3 WC Optics SC Optics GA MC897 UT WOS:A1993MC89700008 PM 19829406 ER PT J AU SEMIATIN, SL MCQUAY, PA SEETHARAMAN, V AF SEMIATIN, SL MCQUAY, PA SEETHARAMAN, V TI A NOVEL PROCESS FOR BREAKDOWN FORGING OF COARSE-GRAIN INTERMETALLIC ALLOYS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 AFOSR,AOARD,ASIAN OFF AEROSP R&D,TOKYO,JAPAN. UES INC,DAYTON,OH 45432. RP SEMIATIN, SL (reprint author), WRIGHT LAB,WL MLLN,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 9 TC 6 Z9 7 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD NOV 1 PY 1993 VL 29 IS 9 BP 1235 EP 1240 DI 10.1016/0956-716X(93)90115-9 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA LX096 UT WOS:A1993LX09600016 ER PT J AU MATTIE, DR HOEFLICH, TJ JONES, CE HORTON, ML WHITMIRE, RE GODIN, CS FLEMMING, CD ANDERSEN, ME AF MATTIE, DR HOEFLICH, TJ JONES, CE HORTON, ML WHITMIRE, RE GODIN, CS FLEMMING, CD ANDERSEN, ME TI THE COMPARATIVE TOXICITY OF OPERATIONAL AIR-FORCE HYDRAULIC FLUIDS SO TOXICOLOGY AND INDUSTRIAL HEALTH LA English DT Article DE HYDRAULIC FLUIDS; MALE F344 RATS; NEPHROPATHY; PEROXISOME PROLIFERATION ID HEPATIC PEROXISOME PROLIFERATION; VAPOR INHALATION TOXICITY; MALE FISCHER-344 RATS; D-LIMONENE; POLYCHLOROTRIFLUOROETHYLENE; ACID; DECALIN AB The subchronic (26 day) oral toxicities of two AF hydraulic fluids (MIL-H-5606 [H5], MIL-H-83282 [H8]), a commercial phosphate ester (PE), and two candidate hydraulic fluids (low temperature version of MIL-H-83282 [LT] and chlorotrifluorethylene oligomers [polyCTFE]) were compared in male F-344 rats. Oral dosing was used in order to quickly compare these fluids to PolyCTFE, the only fluid at the time to have been tested in a 90-day inhalation study. Rats were initially dosed with 1.0 g/kg/day of each fluid. H8 increased alkaline phosphatase (ALKP) while LT produced an anemia and leukocytosis. Exposure to H5 fluid resulted in lymphocytopenia and persistent diuresis. Due to their greater toxicity, resulting in lethality in the first dosing study, only 0.5 g/kg/day of PE and PolyCTFE were administered in the second study. Exposure to PE (0.5 g/kg) resulted in an anemia and decreases in BW (day 10 until day 25), spleen/BW ratio, blood urea nitrogen (BUN), and creatinine (CREAT). PolyCREAT (0.5 g/kg) decreased BW (day 11 to the end of the study) and testicular weight. PolyCTFE (0.5 g/kg) increased relative spleen weights, various clinical chemistry parameters, and triggered a reversible diuresis. PolyCTFE (0.5 g/kg), PE (0.5 g/kg), and H5 produced an increase in absolute and relative liver weights compared to control livers. Peroxisomal beta oxidation, an indicator of peroxisomal proliferation, was significantly increasedabove control levels in the livers of all rats except the PE (0.5 g/kg) group, where the increase was nor significant. Hydrocarbon nephropathy, indicated by increased levels of hyaline droplets in kidney tubules, was severe in H5, mild in H8, LT, and PolyCTFE (0.5 g/kg), and minimal in PE (0.5 g/kg). The MIL-H-83282 fluids (H8 and LT) were the least toxic hydraulic fluids. PolyCTFE and PE were the most toxic, with H5 intermediate. C1 MANTECH ENVIRONM TECHOL INC,DAYTON,OH. US EPA,HERL,RES TRIANGLE PK,NC. RP MATTIE, DR (reprint author), USAF,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV TOXICOL,ARMSTRONG LAB,OL AL HSC OETA BLDG 79,WRIGHT PATTERSON AFB,OH 45433, USA. OI Andersen, Melvin/0000-0002-3894-4811 NR 33 TC 1 Z9 1 U1 0 U2 0 PU PRINCETON SCIENTIFIC PUBL INC PI PRINCETON PA PO BOX 2155, PRINCETON, NJ 08543 SN 0748-2337 J9 TOXICOL IND HEALTH JI Toxicol. Ind. Health PD NOV-DEC PY 1993 VL 9 IS 6 BP 995 EP 1016 PG 22 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA NB269 UT WOS:A1993NB26900002 PM 8191505 ER PT J AU KUNDROTAS, L AF KUNDROTAS, L TI STING OF THE FIRE ANT (SOLENOPSIS) SO NEW ENGLAND JOURNAL OF MEDICINE LA English DT Editorial Material RP KUNDROTAS, L (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 0 TC 6 Z9 6 U1 0 U2 0 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 OCT 28 PY 1993 VL 329 IS 18 BP 1317 EP 1317 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA MD557 UT WOS:A1993MD55700006 PM 8413412 ER PT J AU FIFE, DJ MUEH, HJ CAMPANA, CF AF FIFE, DJ MUEH, HJ CAMPANA, CF TI STRUCTURE OF CHLORO[1,1,1-TRIS(DIPHENYLPHOSPHINOMETHYL)ETHANE]COPPER(I) SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article ID TERTIARY PHOSPHINE; COPPER(I) HALIDES; COMPLEXES AB [CuCl(C41H39P3)], M(r) = 723.6, orthorhombic, Pna2(1), a = 20.704 (16), b = 10.287 (6), c = 16.982 (8) angstrom, V = 3617 (4) angstrom3, Z = 4, D(x) = 1.329 g cm-3, lambda(Mo Kalpha) = 0.71073 angstrom, mu = 8.37 cm-1, F(000) = 1504, T = 296 K, R = 0.050 for 1754 independent observed reflections with I > 2.0sigma(I). The copper(I) complex, Cu(p3)Cl, of the tridentate ligand 1, 1, 1-tris(diphenylphosphinomethyl)ethane, [(C6H5)2PCH2]3CCH3 (p3), has been prepared and characterized-by complete X-ray crystal structure analysis. The ligand is tridentate. Angles at Cu range from 92 to 126-degrees. C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. SIEMENS ANALYTICAL X RAY INSTRUMENTS,MADISON,WI 53719. RP FIFE, DJ (reprint author), THIOKOL CORP,M-S 245,POB 707,BRIGHAM CITY,UT 84302, USA. NR 6 TC 9 Z9 9 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 OCT 15 PY 1993 VL 49 BP 1714 EP 1716 DI 10.1107/S0108270193006584 PN 10 PG 3 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA MF448 UT WOS:A1993MF44800003 ER PT J AU EVWARAYE, AO SMITH, SR SKOWRONSKI, M MITCHEL, WC AF EVWARAYE, AO SMITH, SR SKOWRONSKI, M MITCHEL, WC TI OBSERVATION OF SURFACE-DEFECTS IN 6H-SIC WAFERS SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SINGLE-CRYSTALS; SILICON; GROWTH; FILMS; DLTS AB A broad peak was observed in commercially available single-crystal 6H-SiC material. The samples were nitrogen doped, n type with free carrier concentration (N(D) - N(A)) of 1.3 X 10(18) cm-3 that was determined from capacitance-voltage (C-V) measurements. The defect concentration profile showed that the defect was spatially localized and had a maximum concentration of 2.5 X 10(14) cm-3 at 570 angstrom from the semiconductor-metal interface. The activation energy varied with applied voltage from E(c) - 0.40 eV at V(R) = - 7 V to E(c) - 0.54 eV at V(R) = - 5 V. This can be explained qualitatively in terms of the Poole-Frenkel effect. The defect was removed by the growth and subsequent removal of an oxide layer. Therefore, we conclude that the defect was caused by residual damage from the polishing process. C1 CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213. UNIV DAYTON,DEPT PHYS,DAYTON,OH 45469. RP EVWARAYE, AO (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 21 TC 26 Z9 26 U1 0 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 15 PY 1993 VL 74 IS 8 BP 5269 EP 5271 DI 10.1063/1.354269 PG 3 WC Physics, Applied SC Physics GA MC030 UT WOS:A1993MC03000073 ER PT J AU BUELNA, JL AF BUELNA, JL TI THE SEASONED TRAVELERS GUIDE TO NORTHERN CALIFORNIA - KIESTER,E, KIESTER,W SO LIBRARY JOURNAL LA English DT Book Review RP BUELNA, JL (reprint author), VANDENBERG AIR FORCE BASE LIB,VANDENBERG AFB,CA, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD OCT 15 PY 1993 VL 118 IS 17 BP 80 EP 80 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA MB315 UT WOS:A1993MB31500145 ER PT J AU ADAMS, CM SHARTS, CM SHACKELFORD, SA AF ADAMS, CM SHARTS, CM SHACKELFORD, SA TI ELECTROPHILIC TETRAALKYLAMMONIUM NITRATE NITRATION .1. CONVENIENT NEW ANHYDROUS NITRONIUM TRIFLATE SYNTHESIS AND IN-SITU HETEROCYCLIC N-NITRATION SO TETRAHEDRON LETTERS LA English DT Article DE ANHYDROUS NITRATION; NITRONIUM TRIFLATE; TETRABUTYLAMMONIUM NITRATE; TRIFLIC ANHYDRIDE ID CONDENSED-PHASE DECOMPOSITION; THERMAL-DECOMPOSITION; ENERGETIC MATERIALS; 1,3,5-TRINITROHEXAHYDRO-S-TRIAZINE AB Reaction of tetra-n-butylammonium nitrate and triflic anhydride, CF3SO2OSO2CF3 (Tf2O), in dichloromethane (CH2Cl2) solvent at O degrees C, produces anhydrous nitronium nitrate, NO2OSO2CF3 (NO2OTf). Subsequent introduction of various heterocycles and their N-acetylated analogs yield N-nitrated products in 20-76% yield with an overall one-pot procedure. RP ADAMS, CM (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 13 TC 9 Z9 9 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0040-4039 J9 TETRAHEDRON LETT JI Tetrahedron Lett. PD OCT 15 PY 1993 VL 34 IS 42 BP 6669 EP 6672 DI 10.1016/S0040-4039(00)61671-4 PG 4 WC Chemistry, Organic SC Chemistry GA MB863 UT WOS:A1993MB86300004 ER PT J AU CIPPERLY, GE AF CIPPERLY, GE TI EXTRACTING PROPERTIES OF MULTIPLE-SCENE OBJECTS FROM AUTOCORRELATION FEATURES SO APPLIED OPTICS LA English DT Article DE PARAMETER ESTIMATION; AUTOCORRELATION SUPPORT UNFOLDING; IMAGE RECONSTRUCTION; SPATIAL PHASE RETRIEVAL ID PHASE-RETRIEVAL; SPECKLE PATTERNS; SUPPORT; RECONSTRUCTION; UNIQUENESS AB Information about objects in a scene can sometimes be extracted directly from a spatial autocorrelation function (or equivalently, a power spectrum). Such information may be the quantity of ultimate interest, or it may constrain or provide trial solutions for an iterative image reconstruction. Previous research has described extraction of the most basic of such information, consisting of the number of objects present and their relative positions. From there it is possible to unfold certain properties of individual extended objects (that is, two-dimensional image-plane brightness distributions). I show that when several objects are present, their defining parameter values can be extracted from the corresponding properties of subsidiary features in a set of spatial autocorrelation data by use of a least-squares approach. Furthermore, many potential ambiguities in the single-object case do not arise with multiple objects. RP CIPPERLY, GE (reprint author), USAF, DEPT ENGN PHYS, WRIGHT PATTERSON AFB, OH 45433 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD OCT 10 PY 1993 VL 32 IS 29 BP 5775 EP 5781 PG 7 WC Optics SC Optics GA LZ639 UT WOS:A1993LZ63900008 PM 20856398 ER PT J AU CARR, SS NICIEJEWSKI, RJ KILLEEN, TL AF CARR, SS NICIEJEWSKI, RJ KILLEEN, TL TI REMOTE-SENSING OF F-REGION ION DRIFTS AND ION TEMPERATURES AT SONDRE-STROMFJORD, GREENLAND USING DOPPLER MEASUREMENTS OF THE O+(P-2) STATE SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID EMISSION AB Ground-based observations of Doppler line profiles from the F-Region O+(2P) state, made with the Fabry-Perot interferometer (FPI) at Sondre Stromfjord, Greenland have been analyzed to provide measurements of the ion convection velocity and ion temperature. The FPI line-of-sight (LOS) ion drift and temperature measurements have been compared with simultaneous incoherent scatter radar (ISR) measurements: the results from the two techniques are in good agreement. C1 UNIV MICHIGAN,DEPT ATMOSPHER OCEAN & SPACE SCI,SPACE PHYS RES LAB,ANN ARBOR,MI 48109. RP CARR, SS (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 12 TC 2 Z9 2 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD OCT 8 PY 1993 VL 20 IS 19 BP 2035 EP 2038 DI 10.1029/93GL01966 PG 4 WC Geosciences, Multidisciplinary SC Geology GA MB580 UT WOS:A1993MB58000007 ER PT J AU BOYLE, KM KIM, TY FLYNN, MR WIENER, RW AF BOYLE, KM KIM, TY FLYNN, MR WIENER, RW TI NUMERICAL-CALCULATION OF INERTIAL ASPIRATION EFFICIENCY OF AEROSOLS INTO THIN-WALLED SAMPLING INLETS SO AEROSOL SCIENCE AND TECHNOLOGY LA English DT Article ID WIND VELOCITY; CALM AIR; ANGLES AB Unbiased sampling of airborne particulate from a flowing stream requires that the size distribution and concentration of aerosol collected be identical to that of the aerosol in the free stream. Sampling errors occur during aspiration of the aerosol from the free stream to the face or the inlet and during transmission of the aerosol along the sampling tube. Additional losses or gains may occur due to particle bounce from the front edge of the sampler. In this article, a numerical model for determining the aspiration component of overall sampling efficiency for an arbitrarily shaped thin-walled inlet is presented. The numerical simulations presented here are limited to examining the effect of pitch angle and velocity ratio on the aspiration efficiency. Both two- and three-dimensional numerical predictions of aspiration efficiency are compared with empirically based predictions from the unified model of Hangal and Willeke (1990). In general, the more realistic three-dimensional simulations were in better agreement with the unified model. C1 CHANGWON NATL UNIV,DEPT ENVIRONM ENGN,CHANG WON 641240,SOUTH KOREA. UNIV N CAROLINA,DEPT ENVIRONM SCI & ENGN,CHAPEL HILL,NC 27599. US EPA,ENVIRONM SYST MONITORING LAB,RES TRIANGLE PK,NC 27711. RP BOYLE, KM (reprint author), USAF,OEMI,AL,BROOKS AFB,TX 78235, USA. NR 21 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0278-6826 J9 AEROSOL SCI TECH JI Aerosol Sci. Technol. PD OCT PY 1993 VL 19 IS 3 BP 227 EP 242 DI 10.1080/02786829308959632 PG 16 WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA MA046 UT WOS:A1993MA04600002 ER PT J AU WYMAN, J PITZER, E WILLIAMS, F RIVERA, J DURKIN, A GEHRINGER, J SERVE, P VONMINDEN, D MACYS, D AF WYMAN, J PITZER, E WILLIAMS, F RIVERA, J DURKIN, A GEHRINGER, J SERVE, P VONMINDEN, D MACYS, D TI EVALUATION OF SHIPBOARD FORMATION OF A NEUROTOXICANT (TRIMETHYLOLPROPANE PHOSPHATE) FROM THERMAL-DECOMPOSITION OF SYNTHETIC AIRCRAFT ENGINE LUBRICANT SO AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL LA English DT Article ID TOXICITY AB MIL-L-23699 lubricants that are composed principally of trimethylolpropane triheptanoate (TMP) and tricresyl phosphate (TCP) have been shown to form a neurotoxicant, trimethylolpropane phosphate (TMPP), during pyrolysis and/or combustion. Mechanistically, TMPP is thought to irreversibly inhibit the GABA-mediated inhibitory response and thereby produce epileptiform clonic/tonic seizures with convulsions followed by death. Thermal decomposition of MIL-L-23699 lubricant produces TMPP under laboratory conditions, but this product has not been detected in the workplace following actual fires. This study has examined whether TMPP is produced during an actual shipboard fire by placing the synthetic lubricant in a fire environment aboard the ex-U.S.S. Shadwell, Mobile, Alabama. Both biological and chemical analyses were performed on the thermally decomposed lubricant to ensure detection of the neurotoxic material. Under the conditions of this study, the formation of TMPP during a shipboard fire was confirmed. The implications of this finding for safe management of post-fire cleanup are discussed. C1 WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,LUBRICAT BRANCH,WRIGHT PATTERSON AFB,OH. USN,TECHNOL CTR SAFETY & SURVIVABIL,DIV CHEM,RES LAB,WASHINGTON,DC 20350. WRIGHT STATE UNIV,DEPT CHEM,DAYTON,OH 45435. RP WYMAN, J (reprint author), USN,MED RES INST DETACHMENT TOXICOL,BLDG 433,AREA B,2612 5TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 20 Z9 20 U1 0 U2 4 PU AMER INDUSTRIAL HYGIENE ASSOC PI FAIRFAX PA 2700 PROSPERITY AVE #250, FAIRFAX, VA 22031-4307 SN 0002-8894 J9 AM IND HYG ASSOC J JI Am. Ind. Hyg. Assoc. J. PD OCT PY 1993 VL 54 IS 10 BP 584 EP 592 DI 10.1202/0002-8894(1993)054<0584:EOSFOA>2.0.CO;2 PG 9 WC Environmental Sciences; Public, Environmental & Occupational Health SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health GA MK760 UT WOS:A1993MK76000006 PM 8237791 ER PT J AU MABRY, EW MUNSON, RA RICHARDSON, LA AF MABRY, EW MUNSON, RA RICHARDSON, LA TI THE WARTIME NEED FOR AEROMEDICAL EVACUATION PHYSICIANS - THE UNITED-STATES-AIR-FORCE EXPERIENCE DURING OPERATION DESERT-STORM SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB Air transportation has been the primary method of moving patients by the armed services of the United States since 1949. It is fast, reliable, and allows for centralized medical care. Aeromedical Evacuation (AE), performed by the U.S. Air Force under Department of Defense directive, was intended as a method to transport medically stable patients. Modern warfare has evolved into a process capable of generating large numbers of casualties in a short period of time that can overwhelm local medical facilities. Such casualties would then require immediate transportation in order to obtain appropriate treatment. The terrorist bombing of the U.S. Marine barracks in Beirut and the 1989 military action in Panama (Operation Just Cause) are recent experiences where unstable casualties were transported by an AE system not designed to care for acute injuries while en route to definitive care. During Operation Desert Storm, Aeromedical Evacuation Flight Surgeons (AE/FS's) augmented AE crews and provided flexibility to transport critically ill patients. Future planning should augment designated AE crews with appropriately trained physicians and include equipment on aircraft to resuscitate patients that decompensate inflight. C1 MED SERV OFFICER MANAGEMENT,RANDOLPH AFB,TX. AEROMED CONSULTAT SERV,BROOKS AFB,TX. NR 11 TC 9 Z9 10 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 OCT PY 1993 VL 64 IS 10 BP 941 EP 946 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA MA049 UT WOS:A1993MA04900010 PM 8240200 ER PT J AU SUTHERLAND, RL NATARAJAN, LV TONDIGLIA, VP BUNNING, TJ AF SUTHERLAND, RL NATARAJAN, LV TONDIGLIA, VP BUNNING, TJ TI BRAGG GRATINGS IN AN ACRYLATE POLYMER CONSISTING OF PERIODIC POLYMER-DISPERSED LIQUID-CRYSTAL PLANES SO CHEMISTRY OF MATERIALS LA English DT Article ID LIGHT-SCATTERING; PHOTOPOLYMERIZATION; HOLOGRAPHY; KINETICS; DROPLET AB We report on the results of holographic studies in an acrylate photopolymer system containing a nematic liquid crystal. We demonstrate that Bragg gratings can be formed in this system and that the liquid crystal greatly enhances the diffraction efficiency. For a liquid crystal loading of 16.5 wt %, we have observed diffraction efficiencies approaching 100 %. With careful control of liquid-crystal loading and rapid postcuring, we have obtained optically clear gratings of high diffraction efficiency (>80 %) and narrow angular selectivity (<1-degrees) which are stable over a period of months. Low-voltage scanning electron microscopy reveals a unique morphology for these gratings, showing that they consist of periodic polymer-dispersed liquid-crystal planes. The liquid-crystal microdroplets are confined to the Bragg planes, having a size approximately equal to one-half the grating spacing. We also observe droplet elongation and coalescence along the Bragg planes. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP SUTHERLAND, RL (reprint author), SCI APPLICAT INT CORP,101 WOODMAN DR,DAYTON,OH 45431, USA. NR 17 TC 328 Z9 334 U1 2 U2 18 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD OCT PY 1993 VL 5 IS 10 BP 1533 EP 1538 DI 10.1021/cm00034a025 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA MC690 UT WOS:A1993MC69000025 ER PT J AU GOLDBERGER, JJ PEDERSON, D DAMLE, RS KIM, YH KADISH, AH AF GOLDBERGER, JJ PEDERSON, D DAMLE, RS KIM, YH KADISH, AH TI WIDE COMPLEX TACHYCARDIA DUE TO PSEUDO-CONCEALED MAHAIM-TYPE FIBERS SO CIRCULATION LA English DT Meeting Abstract C1 NORTHWESTERN UNIV,SCH MED,CHICAGO,IL 60611. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER HEART ASSOC PI DALLAS PA 7272 GREENVILLE AVENUE, DALLAS, TX 75231-4596 SN 0009-7322 J9 CIRCULATION JI Circulation PD OCT PY 1993 VL 88 IS 4 BP 30 EP 30 PN 2 PG 1 WC Cardiac & Cardiovascular Systems; Peripheral Vascular Disease SC Cardiovascular System & Cardiology GA MA682 UT WOS:A1993MA68200188 ER PT J AU ARMBRUSTER, DA SCHWARZHOFF, RH HUBSTER, EC LISERIO, MK AF ARMBRUSTER, DA SCHWARZHOFF, RH HUBSTER, EC LISERIO, MK TI ENZYME-IMMUNOASSAY, KINETIC MICROPARTICLE IMMUNOASSAY, RADIOIMMUNOASSAY, AND FLUORESCENCE POLARIZATION IMMUNOASSAY COMPARED FOR DRUGS-OF-ABUSE SCREENING SO CLINICAL CHEMISTRY LA English DT Note DE MARIJUANA; COCAINE; OPIATES; INTERMETHOD COMPARISON; URINE ID CHROMATOGRAPHY-MASS-SPECTROMETRY; METABOLITE ASSAYS; URINE; EMIT; CONFIRMATION; CANNABINOIDS; THRESHOLD; ADX AB The newest formulation of the Syva EMIT assay for drugs of abuse, EMIT II, and a new immunoassay, OnLine (Roche), utilizing the kinetic interaction of microparticles in solution (KIMS) methodology, RIA tests, and TDx fluorescence polarization immunoassay (FPIA) procedures were compared for marijuana, cocaine, opiates, and barbiturates. Both EMIT II and OnLine immunoassays were performed with a Hitachi 717 analyzer. Calibration curves, the degree of separation between negative and cutoff calibrators, precision, likelihood of carryover from positive to negative samples, and overall ease and speed of analysis were evaluated. RIA and OnLine detected 99% of gas chromatography/mass spectrometry (GC/MS)-confirmed marijuana samples; TDx, 95%; and EMIT II, 88%. All four immunoassays detected approximately 99% of confirmed cocaine-positive urines. RIA, OnLine, and TDx all detected 100% of opiate-confirmed samples; EMIT II, 97%. Barbiturate assays exhibited the greatest disparity, with OnLine and TDx detecting 100% of confirmed positives; EMIT II, 88%; and RIA, 78%. For a variety of reasons, we prefer the fully automated EMIT II and OnLine assays for high-volume urine testing, in comparison with our laboratory's semiautomated RIA tests and the limited-throughput TDx system. The four immunoassays investigated delivered comparable performance in terms of detection rates for GC/MS-confirmed positives for some drugs but not for others. C1 AEROSP MED DIRECTORATE,CTR HUMAN SYST,ARMSTRONG LAB,DIV DRUG TESTING,BROOKS AFB,TX 78235. NR 17 TC 44 Z9 45 U1 1 U2 4 PU AMER ASSOC CLINICAL CHEMISTRY PI WASHINGTON PA 2101 L STREET NW, SUITE 202, WASHINGTON, DC 20037-1526 SN 0009-9147 J9 CLIN CHEM JI Clin. Chem. PD OCT PY 1993 VL 39 IS 10 BP 2137 EP 2146 PG 10 WC Medical Laboratory Technology SC Medical Laboratory Technology GA MC295 UT WOS:A1993MC29500017 PM 8403399 ER PT J AU MILLER, MD FU, FH AF MILLER, MD FU, FH TI THE ROLE OF OSTEOTOMY IN THE ANTERIOR CRUCIATE LIGAMENT-DEFICIENT KNEE SO CLINICS IN SPORTS MEDICINE LA English DT Article C1 USAF ACAD,DEPT ORTHOPAED SURG,COLORADO SPRINGS,CO 80840. NR 0 TC 10 Z9 10 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-5919 J9 CLIN SPORT MED JI Clin. Sports Med. PD OCT PY 1993 VL 12 IS 4 BP 697 EP 708 PG 12 WC Sport Sciences SC Sport Sciences GA MD120 UT WOS:A1993MD12000007 PM 8261521 ER PT J AU PARKER, F CAMPBELL, KS AF PARKER, F CAMPBELL, KS TI LINGUISTICS AND WRITING - A REASSESSMENT SO COLLEGE COMPOSITION AND COMMUNICATION LA English DT Article ID BUSINESS C1 USAF,INST TECHNOL,GRAD SCH,WASHINGTON,DC 20330. RP PARKER, F (reprint author), LOUISIANA STATE UNIV,BATON ROUGE,LA 70803, USA. NR 66 TC 1 Z9 1 U1 0 U2 0 PU NATL COUNC TEACH ENG PI URBANA PA 1111 KENYON RD, URBANA, IL 61801 SN 0010-096X J9 COLL COMPOS COMMUN JI Coll. Compost. Commun. PD OCT PY 1993 VL 44 IS 3 BP 295 EP 314 DI 10.2307/358985 PG 20 WC Literature SC Literature GA MB022 UT WOS:A1993MB02200001 ER PT J AU OWEN, RC AF OWEN, RC TI A STRUCTURAL AND OPERATIONAL FUTURE FOR GLOBAL AIRLIFT SO COMPARATIVE STRATEGY LA English DT Article AB The strategic, organizational, and operational variables of airlift are too complicated ever to allow a confident determination of how much is enough. Military planners can reduce the uncertainties caused by the shortfall between requirements and reality by planning within its limitations, but only as a compromise from the operational ideal. The active and reserve military elements of the global airlift fleet must be equipped and sized to service the military core of whatever wartime requirements are adopted as the planning standard. RP OWEN, RC (reprint author), USAF,XOXD,WASHINGTON,DC 20330, USA. NR 22 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0149-5933 J9 COMP STRATEGY PD OCT-DEC PY 1993 VL 12 IS 4 BP 459 EP 470 DI 10.1080/01495939308402944 PG 12 WC International Relations; Political Science SC International Relations; Government & Law GA MJ082 UT WOS:A1993MJ08200006 ER PT J AU MEHL, LE MANCHANDA, S AF MEHL, LE MANCHANDA, S TI USE OF CHAOS THEORY AND COMPLEX-SYSTEMS MODELING TO STUDY ALCOHOL EFFECTS ON FETAL CONDITION SO COMPUTERS AND BIOMEDICAL RESEARCH LA English DT Article ID BIRTH-WEIGHT; PREGNANCY; CONSUMPTION; SMOKING C1 UNIV CALIF BERKELEY,SCH PUBL HLTH,PREVENT RES CTR,BERKELEY,CA 94720. UNIV ARIZONA,COLL MED,DEPT FAMILY & COMMUNITY MED,TUCSON,AZ 85721. USAF,INST TECHNOL,CIM,WRIGHT PATTERSON AFB,OH 45433. UNIV ARIZONA,DEPT COMP SCI,TUCSON,AZ 85721. NR 23 TC 1 Z9 1 U1 1 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0010-4809 J9 COMPUT BIOMED RES JI Comput. Biomed. Res. PD OCT PY 1993 VL 26 IS 5 BP 424 EP 448 DI 10.1006/cbmr.1993.1031 PG 25 WC Computer Science, Interdisciplinary Applications; Medical Informatics SC Computer Science; Medical Informatics GA MC692 UT WOS:A1993MC69200002 PM 8243068 ER PT J AU GALE, DW GRISSOM, TE MIRENDA, JV AF GALE, DW GRISSOM, TE MIRENDA, JV TI TITRATION OF INTRAVENOUS ANESTHETICS FOR CARDIOVERSION - A COMPARISON OF PROPOFOL, METHOHEXITAL, AND MIDAZOLAM SO CRITICAL CARE MEDICINE LA English DT Article DE ANESTHETICS, INTRAVENOUS; PROPOFOL; METHOHEXITAL; MIDAZOLAM; ATRIAL FIBRILLATION THERAPY; ATRIAL FLUTTER THERAPY; BLOOD PRESSURE DRUG EFFECTS; ELECTRIC COUNTERSHOCK; ANESTHESIA RECOVERY PERIOD; CORONARY CARE UNITS; SEDATION ID THIOPENTONE AB Objective. To compare propofol,methohexital, and midazolam administered as titrated infusions for sedation during electrical cardioversion. Design: A prospective, randomized, single-blind comparative study. Setting: Coronary care unit in a military teaching hospital. Patients: Thirty adult patients with atrial fibrillation, atrial flutter, or paroxysmal supraventricular tachycardia. Each patient required electrical cardioversion. Patients were randomized to receive one of the three study drugs. Ten patients composed one drug group. Measurements and Main Results. Demographic variables were similar between groups. Patients were randomized to receive propofol (10 mg/mL), methohexital (5 mg/mL), or midazolam (0.5 mg/mL) administered at 10 mL/min until the patients failed to follow verbal commands and demonstrated a degradation of the lid response to stimulation. Dose requirements (mean +/- SD) were propofol 1.69 +/- 0.46 mg/kg, methohexital 1.07 +/- 0.34 mg/kg, and midazolam 0.16 +/- 0.06 mg/kg. Hemodynamic assessment at baseline, after induction, after cardioversion, and at recovery demonstrated no difference in mean arterial pressure between the three groups. The time to awakening was significantly prolonged in the group that received midazolam (33 +/- 11 mins,p < .05) as compared with the times of the groups that received propofol (11 +/- 4 mins) and methohexital (9 +/- 3 min). Side-effects were similar between groups, with the exception of an increase in pain on injection with propofol and an increased frequency of confusion in those patients receiving midazolam. Recall of the electrical discharges at one hour after the procedure occurred in two patients in the propofol group. In both cases, there were technical problems which caused the duration of the procedure to extend into the anticipated recovery period. Unit dose costs at our institution for a 70-kg patient are: methohexitol, $3.14 (500-mg bottle); medazolam, $14.88 (5-mg vials x 3); and propofol, $6.60 (200-mg ampule). Conclusions: All three drugs are acceptable choices for use during elective direct-current cardioversion. Titration of the agent results in a total drug dose which is usually less than the typical induction dose. There were no significant differences in the hemodynamic actions of these drugs at any time interval. Both propofol and methohexital proved superior in their ability to provide a more rapid anesthetic onset and recovery as compared with midazolam. Propofol offers the advantage of requiring no premixing or dilution, and it is not a controlled substance, although it does result in more pain on injection. C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,SGHSA,SURG CRIT CARE SERV,LACKLAND AFB,TX 78236. ROANOKE MEM HOSP,DEPT ANESTHESIOL,ROANOKE,VA. NR 9 TC 32 Z9 32 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 OCT PY 1993 VL 21 IS 10 BP 1509 EP 1513 DI 10.1097/00003246-199310000-00019 PG 5 WC Critical Care Medicine SC General & Internal Medicine GA MB228 UT WOS:A1993MB22800019 PM 8403960 ER PT J AU GUMAHAD, AT BOURBAKIS, NG KOUTSOUPERAS, C AF GUMAHAD, AT BOURBAKIS, NG KOUTSOUPERAS, C TI RECOGNITION OF TYPED TEXT CHARACTERS USING A 2-D FT FOR A LETTER DRIVEN TEXT READING SYSTEM SO ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE LA English DT Article DE 2-D FT; OCR; HVP AB A non-conventional text character extraction technique, called Horizontal-Vertical Projection (HVP), has been used for feature extraction of numerous alpha-numeric symbols. In an earlier paper, a classification process using 1-D Fourier Transformation was used. This limited the success of the HVP character recognition ratio, however. In this paper, a 2-D feature extraction technique is presented showing the improvements of the HVP character-recognition ratio over the previous approach. C1 SUNY BINGHAMPTON,DEPT ELECT ENGN,BINGHAMTON,NY 13902. USAF,LOS ANGELES,CA. TULANE UNIV,NEW ORLEANS,LA 70118. NR 7 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 0952-1976 J9 ENG APPL ARTIF INTEL JI Eng. Appl. Artif. Intell. PD OCT PY 1993 VL 6 IS 5 BP 473 EP 478 DI 10.1016/0952-1976(93)90008-L PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Multidisciplinary; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA MH407 UT WOS:A1993MH40700008 ER PT J AU SCOTT, RT SNYDER, RR BAGNALL, JW REED, KD ADAIR, CF HENSLEY, SD AF SCOTT, RT SNYDER, RR BAGNALL, JW REED, KD ADAIR, CF HENSLEY, SD TI EVALUATION OF THE IMPACT OF INTRAOBSERVER VARIABILITY ON ENDOMETRIAL DATING AND THE DIAGNOSIS OF LUTEAL-PHASE DEFECTS SO FERTILITY AND STERILITY LA English DT Article DE LUTEAL PHASE DEFECT; ENDOMETRIUM; HISTOLOGY ID PROGESTERONE; WOMEN AB Objective: To determine the magnitude of intraobserver variation in dating endometrial biopsies and its impact on clinical management. Design: Blinded histopathologic interpretation of endometrial biopsy specimens 1 year apart by five pathologists. Setting: Large military tertiary care center. Patients: Endometrial biopsy specimens from 51 patients undergoing evaluation for potential luteal phase defects. Interventions: None. Main Outcome Measures: Calculation of the magnitude of the individual and overall intraobserver variation in endometrial dating for the five pathologists and estimation of its potential impact on clinical management. Results: The intraobserver variation was 0.69 +/- 0.05 days (means +/- SE). There was no significant difference in the magnitude of the variation for 1-day or 2-day dating ranges. The theoretical probability of altering clinical management by having the same pathologist redate a given specimen ranged from 15% to 28%. Conclusion: Histologic dating of endometrial biopsies is subject to a small but highly clinically significant intraobserver variability that may have a major impact on clinical management. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 16 TC 22 Z9 23 U1 0 U2 0 PU AMER SOC REPRODUCTIVE MEDICINE PI BIRMINGHAM PA 1209 MONTGOMERY HIGHWAY, BIRMINGHAM, AL 35216-2809 SN 0015-0282 J9 FERTIL STERIL JI Fertil. Steril. PD OCT PY 1993 VL 60 IS 4 BP 652 EP 657 PG 6 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA MB013 UT WOS:A1993MB01300010 PM 8405519 ER PT J AU BAYRAKTAROGLU, B BARRETTE, J KEHIAS, L HUANG, CI FITCH, R NEIDHARD, R SCHERER, R AF BAYRAKTAROGLU, B BARRETTE, J KEHIAS, L HUANG, CI FITCH, R NEIDHARD, R SCHERER, R TI VERY HIGH-POWER-DENSITY CW OPERATION OF GAAS/ALGAAS MICROWAVE HETEROJUNCTION BIPOLAR-TRANSISTORS SO IEEE ELECTRON DEVICE LETTERS LA English DT Letter ID EMITTER; HBTS AB Thermal instability of multi-emitter high-power microwave heterojunction bipolar transistors (HBT's) was eliminated using a novel heat spreading technique that regulates internal device currents to avoid the formation of hot spots. Devices with 2- and 3-mum minimum emitter sizes and no intentional ballast resistors showed unconditionally stable CW operation up to the device electronic limitations. A record 10-mW/mum2 power density was obtained at 10 GHz with 7-dB gain and 60% power-added efficiency. The highest efficiency was 67.2% at 9.3-mW/mum2 power density. It was shown that stable high-power-density operation can be maintained at multiwatt output power levels. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 7 TC 40 Z9 42 U1 1 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD OCT PY 1993 VL 14 IS 10 BP 493 EP 495 DI 10.1109/55.244741 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA LZ014 UT WOS:A1993LZ01400010 ER PT J AU FRIEDMAN, L SOREF, RA AF FRIEDMAN, L SOREF, RA TI A PROPOSED ELECTROABSORPTION MODULATOR AT 1.55 MU-M IN SILICON SILICON-GERMANIUM ASYMMETRIC QUANTUM-WELL STRUCTURES SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article AB A new, fast, intersubband 1.55-mum electrooptic modulator in the SiGe/Si/CaF2-on-Si stepped-quantum-well system is proposed and analyzed. At applied electric fields of +/-8 V/mum, resonant 1-3 conduction-intersubband absorption is predicted to give 18 dB of optical extinction for narrow-linewidth transitions. RP FRIEDMAN, L (reprint author), USAF,ROME LAB,RL EROC,BEDFORD,MA 01731, USA. NR 8 TC 7 Z9 7 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD OCT PY 1993 VL 5 IS 10 BP 1200 EP 1202 DI 10.1109/68.248427 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA ML436 UT WOS:A1993ML43600029 ER PT J AU ZEITZ, FH MAYBECK, PS AF ZEITZ, FH MAYBECK, PS TI AN ALTERNATE ALGORITHM FOR DISCRETE-TIME FILTERING SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID INFLUENCE DIAGRAMS AB The discrete-time Kalman filter is an optimal estimator for the states of a linear, stochastic system. It assumes that measurements are linear combinations of the states, and all disturbances are Gaussian. The influence diagram is a decision analysis tool. When the influence diagram represents Gaussian random variables, it provides an algorithm for discrete-time filtering equivalent to the Kalman filter. The influence diagram algorithm is a factored form of the Kalman filter, similar to other factored forms such as the U-D filter. Compared with the Kalman filter, it offers improved numerical properties. Compared with other factored forms, it offers a reduced computational load. RP ZEITZ, FH (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 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 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD OCT PY 1993 VL 29 IS 4 BP 1123 EP 1136 DI 10.1109/7.259516 PG 14 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA MD777 UT WOS:A1993MD77700005 ER PT J AU KORMANYOS, BK OSTDIEK, PH BISHOP, WL CROWE, TW REBEIZ, GM AF KORMANYOS, BK OSTDIEK, PH BISHOP, WL CROWE, TW REBEIZ, GM TI A PLANAR WIDE-BAND 80-200 GHZ SUBHARMONIC RECEIVER SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Article ID MILLIMETER AB A wideband planar subharmonic mixer has been designed for millimeter-wave operation. The receiver consists of a novel back-to-back Schottky-diode pair integrated at the base of a wideband log-periodic antenna and placed on a silicon lens. The wideband planar receiver results in state-of-the art-performance at 90 GHz (and 182 GHz) with a double-sideband conversion loss and noise-temperature of 6.7 dB (and 8.5 dB) and 1080 K (and 1820 K), respectively. These results are about 3 dB higher than the best tuned waveguide subharmonic mixers using planar diodes. The design is well suited for higher frequencies (up to 1 THz) and for the inclusion of biased back-to-back planar diodes to ease the LO power requirements. The planar subharmonic approach results in an inexpensive wideband receiver and the design can be easily extended to receiver arrays. C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. UNIV VIRGINIA,DEPT ELECT ENGN,SEMICOND DEVICE LAB,CHARLOTTESVILLE,VA 22903. RP KORMANYOS, BK (reprint author), UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,NASA,CTR SPACE TERAHERTZ TECHNOL,ANN ARBOR,MI 48109, USA. NR 23 TC 45 Z9 45 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD OCT PY 1993 VL 41 IS 10 BP 1730 EP 1737 DI 10.1109/22.247918 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA ML422 UT WOS:A1993ML42200010 ER PT J AU TIRRE, WC PENA, CM AF TIRRE, WC PENA, CM TI COMPONENTS OF QUANTITATIVE REASONING - GENERAL AND GROUP ABILITY FACTORS SO INTELLIGENCE LA English DT Article ID ALGEBRA STORY PROBLEMS; WORKING-MEMORY; INTELLIGENCE; MODELS AB In this study we tested the hypothesis that quantitative reasoning performance is a function of specific processing components as well as general cognitive abilities such as working memory capacity, reasoning, and verbal comprehension. Subjects were administered tests of these three ability factors as well as tests designed to measure three components thought to underlie algebra word problem solving: problem-type identification, decomposition and sequencing, and problem translation. Confirmatory factor analyses indicated good fits for our models of the general ability factors and the word-problem-solving components. Further analyses indicated that the word-problem-solving components added substantially to the more general cognitive abilities in explaining variance in arithmetic reasoning and math knowledge test scores obtained from the Armed Services Vocational Aptitude Battery. We conclude that although general cognitive ability and/or working memory are certainly important ingredients of quantitative reasoning, specific processing components suggested by cognitive theory are at least as important determinants of performance. C1 UNIV IOWA,IOWA CITY,IA 52242. RP TIRRE, WC (reprint author), USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 35 TC 13 Z9 13 U1 1 U2 4 PU ABLEX PUBL CORP PI NORWOOD PA 355 CHESTNUT ST, NORWOOD, NJ 07648 SN 0160-2896 J9 INTELLIGENCE JI Intelligence PD OCT-DEC PY 1993 VL 17 IS 4 BP 501 EP 521 DI 10.1016/0160-2896(93)90015-W PG 21 WC Psychology, Multidisciplinary SC Psychology GA NB259 UT WOS:A1993NB25900006 ER PT J AU WICKERN, GM AF WICKERN, GM TI FUSARIUM ALLERGIC FUNGAL SINUSITIS SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Note ID BIPOLARIS C1 WILFORD HALL USAF MED CTR,DEPT ALLERGY IMMUNOL,LACKLAND AFB,TX 78236. NR 8 TC 17 Z9 18 U1 1 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0091-6749 J9 J ALLERGY CLIN IMMUN JI J. Allergy Clin. Immunol. PD OCT PY 1993 VL 92 IS 4 BP 624 EP 625 DI 10.1016/0091-6749(93)90087-V PG 2 WC Allergy; Immunology SC Allergy; Immunology GA MC590 UT WOS:A1993MC59000015 PM 8409122 ER PT J AU CODY, JT SCHWARZHOFF, R AF CODY, JT SCHWARZHOFF, R TI INTERPRETATION OF METHAMPHETAMINE AND AMPHETAMINE ENANTIOMER DATA SO JOURNAL OF ANALYTICAL TOXICOLOGY LA English DT Article C1 ARMSTRONG LAB,DIV DRUG TESTING,BROOKS AFB,TX 78235. RP CODY, JT (reprint author), WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236, USA. NR 7 TC 45 Z9 45 U1 0 U2 2 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 OCT PY 1993 VL 17 IS 6 BP 321 EP 326 PG 6 WC Chemistry, Analytical; Toxicology SC Chemistry; Toxicology GA LZ152 UT WOS:A1993LZ15200002 PM 8271777 ER PT J AU MIYOSHI, K WU, RLC GARSCADDEN, A BARNES, PN JACKSON, HE AF MIYOSHI, K WU, RLC GARSCADDEN, A BARNES, PN JACKSON, HE TI FRICTION AND WEAR OF PLASMA-DEPOSITED DIAMOND FILMS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; GROWTH AB Reciprocating sliding friction experiments in humid air and in dry nitrogen and unidirectional sliding friction experiments in ultrahigh vacuum were conducted with a natural diamond pin in contact with microwave-plasma-deposited diamond films. Diamond films with a surface roughness (R rms) ranging from 15 to 160 nm were produced by microwave-plasma-assisted chemical vapor deposition. In humid air and in dry nitrogen, abrasion occurred when the diamond pin made grooves in the surfaces of diamond films, and thus, the initial coefficients of friction increased with increasing initial surface roughness. The equilibrium coefficients of friction were independent of the initial surface roughness of the diamond films. In vacuum the friction for diamond films contacting a diamond pin arose primarily from adhesion between the sliding surfaces. In these cases, the initial and equilibrium coefficients of friction were independent of the initial surface roughness of the diamond films. The equilibrium coefficients of friction were 0.02-0.04 in humid air and in dry nitrogen, but 1.5-1.8 in vacuum. The wear factor of the diamond films depended on the initial surface roughness, regardless of environment; it increased with increasing initial surface roughness. The wear factors were considerably higher in vacuum than in humid air and in dry nitrogen. C1 UNIVERSAL ENERGY SYST INC, DAYTON, OH 45432 USA. WRIGHT LAB, WRIGHT PATTERSON AFB, DAYTON, OH 45433 USA. UNIV CINCINNATI, DEPT PHYS, CINCINNATI, OH 45221 USA. RP NASA, LEWIS RES CTR, CLEVELAND, OH 44135 USA. RI Jackson, Howard/K-4881-2012 NR 20 TC 64 Z9 64 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 1993 VL 74 IS 7 BP 4446 EP 4454 DI 10.1063/1.354386 PG 9 WC Physics, Applied SC Physics GA MB177 UT WOS:A1993MB17700024 ER PT J AU LACY, TJ KHATAIN, KG AF LACY, TJ KHATAIN, KG TI OBSESSIVE-COMPULSIVE DISORDER MANIFESTING AS DEMONIC ATTACK SO JOURNAL OF CLINICAL PSYCHIATRY LA English DT Letter RP LACY, TJ (reprint author), USAF,LACKLAND AFB,TX 78236, USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU PHYSICIANS POSTGRADUATE PRESS PI MEMPHIS PA P O BOX 240008, MEMPHIS, TN 38124 SN 0160-6689 J9 J CLIN PSYCHIAT JI J. Clin. Psychiatry PD OCT PY 1993 VL 54 IS 10 BP 398 EP 398 PG 1 WC Psychology, Clinical; Psychiatry SC Psychology; Psychiatry GA MP902 UT WOS:A1993MP90200013 PM 8262885 ER PT J AU SCHUMACHER, JW RUTLEDGE, RE AF SCHUMACHER, JW RUTLEDGE, RE TI AN ALTERNATIVE TO APEXIFICATION SO JOURNAL OF ENDODONTICS LA English DT Note AB Because of time constraints, financial concerns, psychological status, or aesthetic demands of the patient there are times when traditional apexification can not be performed. This case report describes an alternative technique using calcium hydroxide powder to develop an apical barrier in a pulpless tooth. This technique is an easy and efficient method requiring only a single visit to develop an apical stop to facilitate dense obturation. C1 USAF,KESSLER MED CTR SGD,DEPT ENDODONT,KEESLER AFB,MS 39534. NR 12 TC 17 Z9 20 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD OCT PY 1993 VL 19 IS 10 BP 529 EP 531 DI 10.1016/S0099-2399(06)81497-4 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA MA787 UT WOS:A1993MA78700010 PM 8120491 ER PT J AU BEER, JMA AF BEER, JMA TI PERCEIVING SCENE LAYOUT THROUGH AN APERTURE DURING VISUALLY SIMULATED SELF-MOTION SO JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE LA English DT Article ID OPTICAL-FLOW; PERCEPTION; INTEGRATION; INFORMATION; PICTORIAL; MOVEMENTS; VELOCITY; PICTURES; ANGLE AB This study tested scene perception during depicted self-movement. In Experiment 1, viewers reproduced angular scene configurations, revealed over time by camera motions in depth. Viewers used visible flow to update off-screen locations of landmarks that had been drawn from view and thereby perceived scenes in depth beyond the display's boundaries. Experiments 2 and 3 tested whether offscreen space is perceived as a function of depicted velocity and time and whether information from prior views is used. Viewers predicted when lateral movement would reveal a peripheral landmark whose location was shown in a prior panoramic view. Accurate responses, observed under certain conditions, would result if viewers perceived space according to S = integral V dt (D. Algom & L. Cohen-Raz, 1984, 1987; R. Jagacinski, W. Johnson, & R. Miller, 1983). When required to picture wide spans in space yet to emerge, however, viewers responded as if these spans were compressed. The theoretical implications of the ability to retrieve, transform, and apply information after a discontinuous transition from a prior view are discussed. RP BEER, JMA (reprint author), AL CFHP,2255 H ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 38 TC 6 Z9 6 U1 0 U2 0 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0096-1523 J9 J EXP PSYCHOL HUMAN JI J. Exp. Psychol.-Hum. Percept. Perform. PD OCT PY 1993 VL 19 IS 5 BP 1066 EP 1081 DI 10.1037/0096-1523.19.5.1066 PG 16 WC Psychology; Psychology, Experimental SC Psychology GA MB176 UT WOS:A1993MB17600010 PM 8228840 ER PT J AU MALAS, JC IRWIN, RD GRANDHI, RV AF MALAS, JC IRWIN, RD GRANDHI, RV TI AN INNOVATIVE STRATEGY FOR OPEN-LOOP CONTROL OF HOT DEFORMATION PROCESSES SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article; Proceedings Paper CT INTERNATIONAL AEROMAT 93 CONF : PROCESSING/SYNTHESIS OF MATERIALS CY JUN 06-09, 1993 CL ANAHEIM, CA SP AMER SOC MET INT DE FINITE ELEMENT ANALYSIS; HOT WORKABILITY; MICROSTRUCTURAL CONTROL; MODERN CONTROL; OPTIMIZATION METHODS ID MANUFACTURE AB A new strategy for systematically calculating near optimal control parameters for hot deformation processes is presented in this article. This approach is based on modern control theory and involves deriving state-space models directly from available material behavior and hot deformation process models. Two basic stages of analysis and optimization are established in this strategy for nonlinear, open loop control system design for producing required microstructural characteristics, uniformity of deformation and temperature distribution, and other important physical requirements of hot worked products. C1 OHIO UNIV,DEPT ELECT & COMP ENGN,ATHENS,OH 45701. WRIGHT STATE UNIV,DAYTON,OH 45435. RP MALAS, JC (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 11 Z9 11 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD OCT PY 1993 VL 2 IS 5 BP 703 EP 714 DI 10.1007/BF02650060 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA MH538 UT WOS:A1993MH53800010 ER PT J AU GARRETT, PH JONES, JG MOORE, DC MALAS, JC AF GARRETT, PH JONES, JG MOORE, DC MALAS, JC TI EMERGING METHODS FOR THE INTELLIGENT PROCESSING OF MATERIALS SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article; Proceedings Paper CT INTERNATIONAL AEROMAT 93 CONF : PROCESSING/SYNTHESIS OF MATERIALS CY JUN 06-09, 1993 CL ANAHEIM, CA SP AMER SOC MET INT DE DECOUPLED SUBPROCESSES; IN-SITU MEASUREMENT; MULTILOOP CONTROL; QUALITATIVE SUBPROCESS INFLUENCES; SENSOR CONTROLLER ACTUATOR ERROR; TRAPEZOIDAL CONTROLLER TUNING AB Emerging methods, procedures, and performance measures are presented for the design of intelligent materials processing systems that combine both comprehensive new process representations and correspondingly advanced process control systems. The description of these developments is presented in rive parts. The first provides the partitioning of global processes into decoupled finite subprocesses for improved accommodation of process nonlinearities with accompanying simplification of control system complexity. The second is sensor/controller/actuator accountability to establish an on-line process variability baseline whose greatest sensitivity is attributable to process measurement limitations. Development three combines multiloop control with decoupled subprocesses for enhanced process disorder reduction and improved likelihood of achieving material parameters of interest. The fourth, closely associated with development three, provides accurate multiloop control compensation by identification of decoupled trapezoidal subprocess models. The fifth presents a process description language of qualitative subprocess influences for augmenting incompletely modeled processes and unmeasurable control elements by supervising the control space to minimize control conflicts and process variability. C1 WRIGHT LAB,MATERIALS DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP GARRETT, PH (reprint author), UNIV CINCINNATI,DEPT ELECT & COMP ENGN,CINCINNATI,OH 45221, USA. NR 11 TC 0 Z9 0 U1 0 U2 3 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD OCT PY 1993 VL 2 IS 5 BP 727 EP 732 DI 10.1007/BF02650063 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA MH538 UT WOS:A1993MH53800013 ER PT J AU FRICK, PA STECH, DJ AF FRICK, PA STECH, DJ TI EPSILON-RITZ METHOD FOR SOLVING OPTIMAL-CONTROL PROBLEMS - USEFUL PARALLEL SOLUTION METHOD SO JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS LA English DT Article DE EPSILON METHOD; PARALLEL COMPUTING; WALSH FUNCTIONS; HYPERCUBES; LEGENDRE POLYNOMIALS; CHEBYSHEV POLYNOMIALS; RITZ METHOD AB Using Balakrishnan's epsilon problem formulation (Ref 1) and the Rayleigh-Ritz method with an orthogonal polynomial function basis, optimal control problems are transformed from the standard two-point boundary-value problem to a nonlinear programming problem. The resulting matrix-vector equations describing the optimal solution have standard parallel solution methods for implementation on parallel processor arrays. The method is modified to handle inequality constraints, and some results are presented under which specialized nonlinear functions, such as sines and cosines, can be handled directly. Some computational results performed on an Intel Sugarcube are presented to illustrate that considerable computational savings can be realized by using the proposed solution method. C1 USAF ACAD,FRANK J SEILER LAB,COLORADO SPRINGS,CO 80840. RP FRICK, PA (reprint author), UNIV COLORADO,COLL ENGN & APPL SCI,COLORADO SPRINGS,CO 80907, USA. NR 21 TC 4 Z9 4 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0022-3239 J9 J OPTIMIZ THEORY APP JI J. Optim. Theory Appl. PD OCT PY 1993 VL 79 IS 1 BP 31 EP 58 DI 10.1007/BF00941886 PG 28 WC Operations Research & Management Science; Mathematics, Applied SC Operations Research & Management Science; Mathematics GA MJ997 UT WOS:A1993MJ99700003 ER PT J AU HOUSTON, G DAVENPORT, W KEATON, W HARRIS, S AF HOUSTON, G DAVENPORT, W KEATON, W HARRIS, S TI MALIGNANT (METASTATIC) AMELOBLASTOMA - REPORT OF A CASE SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Note ID MANDIBULAR AMELOBLASTOMA; PULMONARY METASTASIS; LYMPH-NODES; HYPERCALCEMIA; LUNGS C1 WILFORD HALL USAF MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,LACKLAND AFB,TX 78236. INDIANA UNIV,MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,INDIANAPOLIS,IN 46204. RP HOUSTON, G (reprint author), WILFORD HALL USAF MED CTR,DEPT ORAL PATHOL,LACKLAND AFB,TX 78236, USA. NR 33 TC 34 Z9 35 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD OCT PY 1993 VL 51 IS 10 BP 1152 EP 1155 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA MC026 UT WOS:A1993MC02600020 PM 8410456 ER PT J AU SHAABAN, AH AF SHAABAN, AH TI WATER ELECTROLYSIS AND PULSED DIRECT-CURRENT SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article AB The present study examined the effects of pulsed direct current (dc) on the performance of water electrolysis for hydrogen generation. The laboratory effort consisted of a series of tests using the Fm01-LC electrolytic cell, manufactured by ICI Chemicals and Polymers, and rated at 38 g of H-2/kA . h. Using a 10 weight percent sulfuric acid solution, the electrolytic cell performance was examined using nonpulsed dc, to determine the cells base-line performance and pulsed dc. The pulsed dc test runs were carried out using a square pulse for seven frequencies, ranging from 10 Hz to 40 kHz, and four duty cycles of 10, 25, 50, and 80%. The hydrogen generation rate was used instead of current in order to facilitate an accurate comparison. For the range of tested parameters, the results demonstrated that the nonpulsed dc operation required the least electrical power. RP SHAABAN, AH (reprint author), APPL RES ASSOCIATES INC,TYNDALL AFB,FL 32403, USA. NR 16 TC 1 Z9 1 U1 1 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 OCT PY 1993 VL 140 IS 10 BP 2863 EP 2867 DI 10.1149/1.2220923 PG 5 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA MD880 UT WOS:A1993MD88000027 ER PT J AU LELAND, JE CHOW, LC AF LELAND, JE CHOW, LC TI FORCED-CONVECTION BOILING FROM A NONFLUSH SIMULATED ELECTRONIC CHIP SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article ID CRITICAL HEAT-FLUX; LIQUID AB An experimental investigation has been undertaken to determine the effect of heated surface height on forced convective boiling. An inert fluorocarbon, FC-72 (3M Industrial Chemical Products Division) is circulated through a vertical rectangular channel at velocities of 1-4 m/s and subcoolings of 20 and 35-degrees-C. Results for five surface heights, as measured relative to the flow channel wall, were obtained. These were 0.127-mm recessed, 0.229-, 0.457-, and 0.635-mm protruded and flush with the flow channel wall. A reduction in critical heat flux (CHF) occurred at low velocities, while an increase occurred at higher velocities for the protruded cases. A reduction of CHF occurred at all velocities for the recessed condition. Additional results in the velocity range of 5-7 m/s are presented for the flush condition. This data shows that for velocities greater than 4 m/s, CHF becomes weakly dependent on the Weber number. Weak dependence on Weber number also implies a direct proportionality to velocity and a weak dependence on heated length. C1 UNIV KENTUCKY,DEPT MECH ENGN,LEXINGTON,KY 40506. RP LELAND, JE (reprint author), WRIGHT LAB,DIV AEROSP POWER,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1993 VL 7 IS 4 BP 588 EP 594 DI 10.2514/3.465 PG 7 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA MD879 UT WOS:A1993MD87900008 ER PT J AU KATTA, VR ROQUEMORE, WM AF KATTA, VR ROQUEMORE, WM TI NUMERICAL-METHOD FOR SIMULATING FLUID-DYNAMIC AND HEAT-TRANSFER CHANGES IN JET-ENGINE INJECTOR FEED-ARM DUE TO FOULING SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article ID FUEL AB A computational method for integrating fluid-dynamic simulations and heat-transfer calculations in different segments of solid boundaries has been developed to predict deposition inside tubes. The fuel thermal-degradation mechanism is treated mathematically using a four-step global-chemistry model. Deposits are allowed to grow on the wall surface, and the resulting fluid-dynamic and heat-transfer changes are implicitly computed using a time-dependent formulation. Turbulent-flow simulations for the fuel flow bounded by the fuel-deposit interface are made on a body-oriented coordinate system. The induction period, which is associated with the slower deposition during the initial hours of exposure, is modeled by introducing a wall-reaction-type mechanism for the surface sticking phenomenon. Calculations are made for full-scale and half-scale gas-turbine injector feed-arm rigs. The temperature at the deposit-tube interface is found to increase with deposition. Computed accumulated deposit weight and changes in the tube-inner-wall temperature with time are compared with the experimental data. The effects of fouling on heat transfer and blockage to the fuel flow are discussed. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP KATTA, VR (reprint author), SYST RES LABS INC,DAYTON,OH 45440, USA. NR 16 TC 15 Z9 15 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1993 VL 7 IS 4 BP 651 EP 660 DI 10.2514/3.474 PG 10 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA MD879 UT WOS:A1993MD87900017 ER PT J AU JOSYULA, E SHANG, JS AF JOSYULA, E SHANG, JS TI COMPUTATION OF NONEQUILIBRIUM HYPERSONIC FLOWFIELDS AROUND HEMISPHERE CYLINDERS SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article ID FLOWS AB Hypersonic flows past hemisphere cylinders at zero incidence in chemical and thermal nonequilibrium are investigated for a range of Mach numbers from 10 to 18. The numerical code shows excellent comparison for surface pressure and heat transfer prediction with recent experiments conducted in a shock tunnel. The numerical code also compares well for stagnation point heat flux predictions at altitudes of 22 and 37 km with a set of earlier experiments. Numerical solutions with the vibrational equilibrium model are compared with those of multitemperature nonequilibrium. The stagnation point heat transfer is 10-23% higher for the nonequilibrium solutions in the Mach number range of 12-18. The importance of a multitemperature model for accurate prediction of stagnation properties, particularly the heat transfer, is noted. The variation in computed shocks-standoff distance substantiates that the Mach number independence principle applicable to ideal gases does not hold for dissociating flows. Over the range of Mach numbers, the noticeable influence of vibrational relaxation on the temperature distributions and mass concentrations in the vicinity of shocks is shown in the present study. RP WRIGHT LAB, FLIGHT DYNAM DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 36 TC 5 Z9 6 U1 0 U2 1 PU AMER INST AERONAUTICS ASTRONAUTICS PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 EI 1533-6808 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1993 VL 7 IS 4 BP 668 EP 679 DI 10.2514/3.476 PG 12 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA MD879 UT WOS:A1993MD87900019 ER PT J AU MCGREGOR, WK DRAKES, JA BEALE, KS SHERRELL, FG AF MCGREGOR, WK DRAKES, JA BEALE, KS SHERRELL, FG TI ALCL ABSORPTION FEATURE IN SOLID ROCKET PLUME RADIATION SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Note RP MCGREGOR, WK (reprint author), SVERDRUP TECHNOL INC,ARNOLD ENGN DEV CTR,AECD GRP,ARNOLD AFB,TN 37389, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1993 VL 7 IS 4 BP 736 EP 739 DI 10.2514/3.488 PG 4 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA MD879 UT WOS:A1993MD87900031 ER PT J AU LONG, SA ARRIAGA, M NELSON, RA AF LONG, SA ARRIAGA, M NELSON, RA TI ACOUSTIC NEUROMA VOLUME - MRI-BASED CALCULATIONS AND CLINICAL IMPLICATIONS SO LARYNGOSCOPE LA English DT Article ID GROWTH-RATE; RESONANCE AB This study developed a technique for magnetic resonance imaging (MRI)-based volume calculation and defined the specific volume-diameter relationship in acoustic neuromas (AN). Computer-assisted measurement calculated the area of tumor in each MRI slice. Volume was determined by multiplying area by slice interval. The technique was validated by imaging known volumes of gadolinium. The precision was greater than 95%. Our volume calculations revealed a specific volume-diameter relationship in ANs. The following conclusions can be drawn: 1. our technique can accurately determine AN tumor volume; 2. the AN volume-diameter relationship is a specific function and cannot be predicted by assumptions of tumor shape; 3. the volume-diameter relationship should be combined with clinical data to determine the ''break point'' at which small increments of diameter produce significant clinical sequelae. C1 LOMA LINDA UNIV,DEPT OTOLARYNGOL,LOMA LINDA,CA 92350. WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL,LACKLAND AFB,TX 78236. HOUSE EAR CLIN INC,LOS ANGELES,CA. NR 13 TC 25 Z9 25 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD OCT PY 1993 VL 103 IS 10 BP 1093 EP 1096 PG 4 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA MB317 UT WOS:A1993MB31700003 PM 8412443 ER PT J AU HOWARD, DC AF HOWARD, DC TI DESIGN, IMPLEMENTATION, AND PRELIMINARY-RESULTS OF AN EMERGENCY MEDICAL TECHNICIAN INTERMEDIATE TRAINING-PROGRAM ON AN AIR-FORCE INSTALLATION SO MILITARY MEDICINE LA English DT Article AB Design and implementation of an Emergency Medical Technician-Intermediate program based on Air Force medical technician training is discussed. Criteria for candidate selection is given and course content is outlined. Ambulance use by the population as well as response times and success rates for field cardiac arrest for a 2-year period are discussed. Recommendations for future development are given. RP HOWARD, DC (reprint author), WILFORD HALL USAF MED CTR,DEPT EMERGENCY,LACKLAND AFB,TX 78236, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD OCT PY 1993 VL 158 IS 10 BP 660 EP 662 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA MB762 UT WOS:A1993MB76200012 PM 8264924 ER PT J AU JOHNSON, CL AF JOHNSON, CL TI HEALTH PROMOTION AND THE FLIGHT SURGEON SO MILITARY MEDICINE LA English DT Letter RP JOHNSON, CL (reprint author), USAF,ARMY MED DEPT CTR & SCH,PSYCHIAT & NEUROL BRANCH,BROOKS AFB,TX 78235, 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 OCT PY 1993 VL 158 IS 10 BP A8 EP & PG 0 WC Medicine, General & Internal SC General & Internal Medicine GA MB762 UT WOS:A1993MB76200002 PM 8264917 ER PT J AU SCOTT, RT LEONARDI, MR HOFMANN, GE ILLIONS, EH NEAL, GS NAVOT, D AF SCOTT, RT LEONARDI, MR HOFMANN, GE ILLIONS, EH NEAL, GS NAVOT, D TI A PROSPECTIVE EVALUATION OF CLOMIPHENE CITRATE CHALLENGE TEST SCREENING OF THE GENERAL INFERTILITY POPULATION SO OBSTETRICS AND GYNECOLOGY LA English DT Article ID FOLLICLE-STIMULATING-HORMONE; INVITRO FERTILIZATION; VARIABILITY; PREDICTION; QUALITY; AGE AB Objective: To assess the results of screening an unselected general infertility population for diminished ovarian reserve with the clomiphene citrate challenge test. Methods: Two hundred thirty-six couples were followed prospectively and studied for the relationship between clomiphene citrate challenge test screening and final diagnoses and long-term fertility rates. Results: Abnormal clomiphene citrate challenge tests were found in two of 61 (3%) of the patients younger than 30 years, in five of 72 (7%) aged 30-34, in seven of 68 (10%) aged 35-39, and in nine of 35 (26%) aged 40 or older. An abnormal test predicted lower pregnancy rates; conception occurred in 92 of 213 (43%) of patients with normal results, but only two of 23 (9%) of patients with abnormal results (P < .004). Unexplained infertility (not considering the clomiphene citrate challenge test) was a common finding in patients with abnormal clomiphene citrate challenge test results (12 of 23). This incidence was significantly higher than that in patients with normal clomiphene citrate challenge test results (20 of 213) (P < .001). Conclusions: Approximately 10% of the patients in the general infertility population had abnormal clomiphene citrate challenge tests. The incidence of abnormal results increases with age beginning in the early 30s, occurs with a higher frequency in patients who would otherwise be diagnosed with unexplained infertility, and prognosticates decreased long-term pregnancy rates. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,LACKLAND AFB,TX. BETHESDA HOSP,BETHESDA FERTIL CTR,BETHESDA,MD. CUNY MT SINAI SCH MED,DEPT OBSTET & GYNECOL & REPROD SCI,NEW YORK,NY 10029. NR 14 TC 108 Z9 111 U1 0 U2 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0029-7844 J9 OBSTET GYNECOL JI Obstet. Gynecol. PD OCT PY 1993 VL 82 IS 4 BP 539 EP 544 PN 1 PG 6 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA LY727 UT WOS:A1993LY72700013 PM 8377979 ER PT J AU DRUESSEL, J GRANTHAM, J HAALAND, P AF DRUESSEL, J GRANTHAM, J HAALAND, P TI OPTIMAL PHASE MODULATION FOR GRADIENT-INDEX OPTICAL FILTERS SO OPTICS LETTERS LA English DT Article ID FOURIER-TRANSFORM EXCITATION; THIN-FILM SYNTHESIS; MASS-SPECTROMETRY AB Fourier transforms provide a basis for the design of gradient-index optical filters. A variety of techniques that differ in their treatment of the complex part or phase of the transformed refractive-index profile are reported. Here we describe a method of using the phase of the index profile as a variable to permit a closed-form, constrained optimization of rugate filters. Use of an optimal phase function in Fourier-based filter designs reduces the product of index contrast and thickness for desired reflectance spectra. The shape of the reflectance spectrum is recovered with greater fidelity by suppression of Gibbs oscillations and shifting of sidelobes into desired wavelength regions. C1 LAWRENCE ASSOCIATES INC,DAYTON,OH 45431. RP DRUESSEL, J (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 7 Z9 7 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 OCT 1 PY 1993 VL 18 IS 19 BP 1583 EP 1585 DI 10.1364/OL.18.001583 PG 3 WC Optics SC Optics GA LY623 UT WOS:A1993LY62300001 PM 19823452 ER PT J AU DONGARI, A MCDONNELL, HT LANGLAIS, RP AF DONGARI, A MCDONNELL, HT LANGLAIS, RP TI DRUG-INDUCED GINGIVAL OVERGROWTH SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY LA English DT Article ID CYCLOSPORINE THERAPY; FOLIC-ACID; HYPERPLASIA; PHENYTOIN; NIFEDIPINE; DIPHENYLHYDANTOIN; MECHANISM AB Certain anticonvulsants, cyclosporine, and a variety of calcium channel blockers have been shown to produce clinically and histologically similar gingival enlargements in certain susceptible patients. These drugs appear to be similar with respect to their pharmacologic mechanism of action at the cellular level. The primary target tissue is the most essential difference among them, Therefore it is tempting to speculate that these agents may act similarly on a common secondary target tissue, such as gingival connective tissue, and cause a hyperplastic response. This tissue reaction may involve a disturbance of calcium ion influx into specific cell populations with a resulting alteration in collagen metabolism and other host cell response mechanisms. A connection between ion exchange, folate uptake, collagenase activation, and bacterial inflammation may exist. Until a more effective approach can be developed from future research results, treatment should continue to emphasize plaque control, professional debridement, and resective gingival procedures to improve function, esthetics, and access for home care. C1 UNIV TEXAS HLTH SCI CTR SAN ANTONIO, SCH DENT, DEPT DENT DIAGNOST SCI, SAN ANTONIO, TX 78284 USA. WILFORD HALL USAF MED CTR, DEPT PERIDONT, LACKLAND AFB, TX USA. RP DONGARI, A (reprint author), UNIV TEXAS HLTH SCI CTR SAN ANTONIO, SAN ANTONIO DENT SCH, DEPT PERIODONT, 7703 FLOYD CURL DR, SAN ANTONIO, TX 78284 USA. NR 48 TC 42 Z9 42 U1 1 U2 1 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD OCT PY 1993 VL 76 IS 4 BP 543 EP 548 DI 10.1016/0030-4220(93)90027-2 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA MB608 UT WOS:A1993MB60800025 PM 8233439 ER PT J AU LEE, JK KABRISKY, M OXLEY, ME ROGERS, SK RUCK, DW AF LEE, JK KABRISKY, M OXLEY, ME ROGERS, SK RUCK, DW TI THE COMPLEX CEPSTRUM APPLIED TO 2-DIMENSIONAL IMAGES SO PATTERN RECOGNITION LA English DT Article DE COMPLEX CEPSTRUM; INVERSE COMPLEX CEPSTRUM; NOTCH LIFTERING; ECHO REMOVAL; 2-DIMENSIONAL IMAGE PROCESSING AB The purpose of this paper is to provide an analytical understanding of the two-dimensional (2D) complex cepstrum and to apply the cepstrum in image processing. The analytical cepstrum is first developed in one dimension for the single echo case. This is followed by a more valuable analytical derivation for multiple echoes in one and two dimensions. The 2D, digital implementation of the forward and inverse cepstrum is then described. Three key applications are presented for 2D images: echo removal, automatic intensity control, and enhancement of repetitive features. A significant recommendation for future research is to investigate optimal filtering techniques based on the described analytical results. RP LEE, JK (reprint author), USAF,INST TECHNOL,SCH ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 13 Z9 13 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0031-3203 J9 PATTERN RECOGN JI Pattern Recognit. PD OCT PY 1993 VL 26 IS 10 BP 1579 EP 1592 DI 10.1016/0031-3203(93)90162-P PG 14 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA ME104 UT WOS:A1993ME10400012 ER PT J AU DEFUSCO, RP AF DEFUSCO, RP TI MODELING BIRD HAZARDS TO AIRCRAFT - A GIS APPLICATION STUDY SO PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING LA English DT Article C1 USAF ACAD,COLORADO SPRINGS,CO 80840. RP DEFUSCO, RP (reprint author), UNIV COLORADO,DEPT ENVIRONM POPULAT & ORGANISM BIOL,CAMPUS BOX 334,BOULDER,CO 80309, USA. NR 5 TC 3 Z9 3 U1 1 U2 2 PU AMER SOC PHOTOGRAMMETRY PI BETHESDA PA 5410 GROSVENOR LANE SUITE 210, BETHESDA, MD 20814-2160 SN 0099-1112 J9 PHOTOGRAMM ENG REM S JI Photogramm. Eng. Remote Sens. PD OCT PY 1993 VL 59 IS 10 BP 1481 EP & PG 0 WC Geography, Physical; Geosciences, Multidisciplinary; Remote Sensing; Imaging Science & Photographic Technology SC Physical Geography; Geology; Remote Sensing; Imaging Science & Photographic Technology GA MB704 UT WOS:A1993MB70400001 ER PT J AU MILLER, MD HARNER, CD AF MILLER, MD HARNER, CD TI POSTERIOR CRUCIATE LIGAMENT INJURIES - CURRENT CONCEPTS IN DIAGNOSIS AND TREATMENT SO PHYSICIAN AND SPORTSMEDICINE LA English DT Article AB Posterior cruciate ligament (PCL) injuries typically occur during hyperflexion or with a blow to the knee during hyperextension. Physical findings such as a positive posterior drawer test or a posterior sag and standard x-rays are keys to expedient diagnosis. Acute isolated PCL injuries often are treated conservatively with strengthening and proprioceptive exercises. Chronic isolated PCL injuries and combined ligament injuries usually require surgical reconstruction. RP MILLER, MD (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MCGRAW HILL HEALTHCARE PUBLICATIONS PI MINNEAPOLIS PA 4530 WEST 77TH ST, MINNEAPOLIS, MN 55435-5000 SN 0091-3847 J9 PHYSICIAN SPORTSMED JI Physician Sportsmed. PD OCT PY 1993 VL 21 IS 10 BP 38 EP & PG 0 WC Primary Health Care; Orthopedics; Sport Sciences SC General & Internal Medicine; Orthopedics; Sport Sciences GA MA679 UT WOS:A1993MA67900005 PM 27424728 ER PT J AU REA, MA FERRIERA, S RANDOLPH, W GLASS, JD AF REA, MA FERRIERA, S RANDOLPH, W GLASS, JD TI DAILY PROFILE OF THE EXTRACELLULAR CONCENTRATION OF GLUTAMATE IN THE SUPRACHIASMATIC REGION OF THE SIBERIAN HAMSTER SO PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE LA English DT Article ID LATERAL GENICULATE-NUCLEUS; ACID RECEPTOR ANTAGONISTS; CIRCADIAN RHYTHMICITY; OPTIC-NERVE; AMINO-ACIDS; RETINOHYPOTHALAMIC TRACT; NEURAL TRANSPLANT; RAT HYPOTHALAMUS; RELEASE; INVITRO AB Daily profiles of the extracellular concentrations of glutamate (GLU), aspartate, and glutamine in the region of the suprachiasmatic nuclei (SCN) of the Djungarian hamster were examined by in vivo microdialysis. Hamsters with a dialysis probe located in or near the SCN exhibited a diurnal variation in the extracellular concentration of GLU. Glutamate levels rose gradually during the latter half of the subjective day and through the night to reach peak levels near the time of lights-on. The extracellular concentration of GLU was significantly elevated (P < 0.05) during the latter half of the dark phase relative to the level at midday. The average peak in extracellular GLU was 217% of the midday value (P < 0.05; n = 5). Diurnal fluctuations were not consistently observed in the concentrations of aspartate in SCN dialysates. The nocturnal rise in extracellular GLU in the SCN was not attenuated by perfusion with 10 mu M tetrodotoxin, although this concentration of tetrodotoxin completely blocked increases in extracellular GLU caused by simultaneous perfusion with 30 mu M veratridine. Collectively, these results points to a diurnal rhythm in extracellular concentration of GLU in the SCN region which may not reflect diurnal variations in synaptic activity. C1 KENT STATE UNIV,DEPT BIOL SCI,KENT,OH 44242. RP REA, MA (reprint author), ARMSTRONG LAB,CFTO,CIRCADIAN NEUROBIOL RES GRP,BROOKS AFB,TX 78235, USA. NR 42 TC 15 Z9 15 U1 0 U2 1 PU BLACKWELL SCIENCE INC PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0037-9727 J9 P SOC EXP BIOL MED JI Proc. Soc. Exp. Biol. Med. PD OCT PY 1993 VL 204 IS 1 BP 104 EP 109 PG 6 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA PC070 UT WOS:A1993PC07000014 PM 8372092 ER PT J AU LINSTER, BG AF LINSTER, BG TI STACKELBERG RENT-SEEKING SO PUBLIC CHOICE LA English DT Article ID SOCIAL COSTS; LONG-RUN; MONOPOLY; WELFARE; DISTORTIONS AB In this paper I present a formal analysis of rent-seeking games in which the players do not move simultaneously. I consider rent-seeking situations where the players are risk neutral and may value the prize differently. The subgame perfect equilibrium outcome in this Stackelberg game provides several surprising and interesting results. I extend the problem to deal with cases of incomplete information concerning the value a player has for the politically contestable rent. RP LINSTER, BG (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 20 TC 18 Z9 18 U1 2 U2 3 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0048-5829 J9 PUBLIC CHOICE JI Public Choice PD OCT PY 1993 VL 77 IS 2 BP 307 EP 321 DI 10.1007/BF01047872 PG 15 WC Economics; Political Science SC Business & Economics; Government & Law GA LZ084 UT WOS:A1993LZ08400006 ER PT J AU LINSTER, BG AF LINSTER, BG TI A GENERALIZED-MODEL OF RENT-SEEKING BEHAVIOR SO PUBLIC CHOICE LA English DT Article ID SOCIAL COSTS; LONG-RUN; MONOPOLY AB In this paper I present a formal analysis of rent-seeking games in which the players' valuations for the prize are represented as vectors. The players in this game are risk neutral and may not be indifferent to who wins the contestable rent if it is someone else. Both Tullock's original rent-seeking model and the public goods rent-seeking model by Katz et al. turn out to be special cases of this more general model. RP LINSTER, BG (reprint author), USAF ACAD,DEPT ECON & GEOG,COLORADO SPRINGS,CO 80840, USA. NR 13 TC 11 Z9 11 U1 2 U2 4 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0048-5829 J9 PUBLIC CHOICE JI Public Choice PD OCT PY 1993 VL 77 IS 2 BP 421 EP 435 DI 10.1007/BF01047880 PG 15 WC Economics; Political Science SC Business & Economics; Government & Law GA LZ084 UT WOS:A1993LZ08400014 ER PT J AU ITO, K KANG, SW AF ITO, K KANG, SW TI A DISSIPATIVE PSEUDOSPECTRAL METHOD FOR THE 2-DIMENSIONAL NAVIER-STOKES EQUATIONS SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE NAVIER-STOKES EQUATIONS; WEAK VARIATIONAL FORM; PSEUDOSPECTRAL METHOD ID FINITE-ELEMENT APPROXIMATION; SPATIAL DISCRETIZATION; NUMERICAL SIMULATION; INCOMPRESSIBLE FLOWS; SIMPLE BOUNDARIES; NONSTATIONARY; TIME AB A pseudospectral method for solving the two-dimensional Navier-Stokes equations with periodic boundary conditions is developed. The numerical method preserves the zero-dissipation property of the nonlinear convective term. Using weak variational forms, the convergence properties of the authors' scheme are analyzed. C1 USAF,CTR ENGN & SERV,SUBSURFACE CHEM PROC GRP,TYNDALL AFB,PANAMA CITY,FL 32403. UNIV SO CALIF,CTR APPL MATH SCI,LOS ANGELES,CA 90089. RP ITO, K (reprint author), N CAROLINA STATE UNIV,DEPT MATH,RALEIGH,NC 27695, USA. NR 23 TC 0 Z9 0 U1 1 U2 2 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 SN 0036-1429 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PD OCT PY 1993 VL 30 IS 5 BP 1333 EP 1350 DI 10.1137/0730069 PG 18 WC Mathematics, Applied SC Mathematics GA MA402 UT WOS:A1993MA40200006 ER PT J AU CHEU, HW GRISHKIN, BA LINVILLE, WK AF CHEU, HW GRISHKIN, BA LINVILLE, WK TI ENDOBRONCHIAL HAMARTOMA TREATED BY BRONCHOSCOPIC EXCISION SO SOUTHERN MEDICAL JOURNAL LA English DT Note C1 BROOKE ARMY MED CTR,FT SAM HOUSTON,TX 78234. RP CHEU, HW (reprint author), WILFORD HALL USAF MED CTR,SURG SERV,DEPT GEN SURG,LACKLAND AFB,TX 78236, USA. NR 6 TC 2 Z9 3 U1 0 U2 0 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD OCT PY 1993 VL 86 IS 10 BP 1164 EP 1165 DI 10.1097/00007611-199310000-00018 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA MD260 UT WOS:A1993MD26000018 PM 8211338 ER PT J AU LATENDRESSE, JR AZHAR, S BROOKS, CL CAPEN, CC AF LATENDRESSE, JR AZHAR, S BROOKS, CL CAPEN, CC TI PATHOGENESIS OF CHOLESTERYL LIPIDOSIS OF ADRENOCORTICAL AND OVARIAN INTERSTITIAL-CELLS IN F344 RATS CAUSED BY TRICRESYL PHOSPHATE AND BUTYLATED TRIPHENYL PHOSPHATE SO TOXICOLOGY AND APPLIED PHARMACOLOGY LA English DT Article ID ORTHO-CRESYL PHOSPHATE; ADRENAL-GLAND; METABOLISM C1 VET AFFAIRS MED CTR,GRECC,PALO ALTO,CA 94304. OHIO STATE UNIV,DEPT VET PATHOBIOL,COLUMBUS,OH 43210. RP LATENDRESSE, JR (reprint author), USN,MED RES INST,TOXICOL DETACHMENT,DIV TOX HAZARDS,BLDG 79,2856 G ST,AREA B,WRIGHT PATTERSON AFB,OH 45433, USA. RI Latendresse, John/A-9215-2009 NR 27 TC 20 Z9 21 U1 4 U2 7 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0041-008X J9 TOXICOL APPL PHARM JI Toxicol. Appl. Pharmacol. PD OCT PY 1993 VL 122 IS 2 BP 281 EP 289 DI 10.1006/taap.1993.1197 PG 9 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA MB632 UT WOS:A1993MB63200014 PM 8212010 ER PT J AU SHARMA, SK FORSTER, NH GSCHWENDER, LJ AF SHARMA, SK FORSTER, NH GSCHWENDER, LJ TI EFFECT OF VISCOSITY INDEX IMPROVERS ON THE ELASTOHYDRODYNAMIC LUBRICATION CHARACTERISTICS OF A CHLOROTRIFLUOROETHYLENE AND A POLYALPHAOLEFIN FLUID SO TRIBOLOGY TRANSACTIONS LA English DT Article AB The film thickness characteristics and traction behavior, two of the more important elastohydrodynamic lubrication (EHL) properties, of two important classes of synthetic lubricants have been studied. The effect of viscosity index (VI) improvers on these properties has been determined for both hydrogenated polyalphaolefin (PAO) base fluids and chlorotrifluoroethylene oligomer (CTFE) base fluids. A polyalkylmethacrylate (PMM) VI improver was studied in PAO and a copolymer of vinylidine fluoride and chlorotrifluoroethylene was studied in CTFE. The VI improvers demonstrated insignificant improvement in the EHL film thickness of both the PAO and CTFE base fluids as determined by comparing the measured film thickness of the VI-improved fluids to the predicted film thickness based on measured pressure-viscosity characteristics and kinematic viscosities determined at low shear rates. Similarly, the traction behavior of VI-improved PAO and CTFE fluids was nearly equivalent to that of the respective base fluids, demonstrating very little effect of the VI improvers on these properties. The minimal contribution is attributed to the non-Newtonian behavior of the VI improved fluids under the high shear rates and stresses found in an EHL contact. Physical properties of the base oil determine the true behavior of a VI-improved fluid under EHL conditions; therefore, the properties of the base fluid should be used in theoretical predictions instead of the properties of the formulated fluid. RP SHARMA, SK (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 5 Z9 5 U1 2 U2 2 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD OCT PY 1993 VL 36 IS 4 BP 555 EP 564 DI 10.1080/10402009308983195 PG 10 WC Engineering, Mechanical SC Engineering GA MC169 UT WOS:A1993MC16900006 ER PT J AU GANNON, RL REA, MA AF GANNON, RL REA, MA TI GLUTAMATE-RECEPTOR IMMUNOREACTIVITY IN THE RAT SUPRACHIASMATIC NUCLEUS SO BRAIN RESEARCH LA English DT Note DE IMMUNOCYTOCHEMISTRY; CIRCADIAN RHYTHM; HYPOTHALAMUS; EXCITATORY AMINO ACID; GLUR1 ID METHYL-D-ASPARTATE; RETINOHYPOTHALAMIC TRACT; CHOLERA-TOXIN; LOCALIZATION; ANTAGONISTS; HAMSTER; RHYTHMS; LIGHT; BRAIN; NMDA AB Antibodies selective for the glutamate receptor subunits GluR1 and GluR2/3 were used to localize glutamate receptor immunoreactivity in the rat suprachiasmatic nuclei (SCN). These antisera identified two distinct cell populations within the SCN. Cells immunoreactive to GluR2/3 antiserum were located predominately in the ventral SCN while antiserum selective for GluR1 stained a population located along the dorsal and lateral borders of the nucleus. There were no apparent day-night differences in GluR immunoreactivity observed in the SCN. C1 CFTO,ARMSTRONG LAB,CIRCADIAN NEUROBIOL RES GRP,BROOKS AFB,TX 78235. NR 22 TC 33 Z9 33 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-8993 J9 BRAIN RES JI Brain Res. PD SEP 17 PY 1993 VL 622 IS 1-2 BP 337 EP 342 DI 10.1016/0006-8993(93)90841-A PG 6 WC Neurosciences SC Neurosciences & Neurology GA LW541 UT WOS:A1993LW54100048 PM 8242377 ER PT J AU SMART, R AF SMART, R TI INFECTIOUS-DISEASES IN SOMALIA SO NEW ENGLAND JOURNAL OF MEDICINE LA English DT Letter RP SMART, R (reprint author), USAF,MC APO AE 09094-5300,RAMSTEIN AFB,GERMANY. NR 2 TC 0 Z9 0 U1 0 U2 0 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 SEP 16 PY 1993 VL 329 IS 12 BP 889 EP 889 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA LW551 UT WOS:A1993LW55100032 PM 8355761 ER PT J AU PRASAD, SV ZABINSKI, JS AF PRASAD, SV ZABINSKI, JS TI TRIBOLOGY OF TUNGSTEN DISULFIDE (WS2) - CHARACTERIZATION OF WEAR-INDUCED TRANSFER FILMS SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article ID ALUMINUM RP PRASAD, SV (reprint author), WRIGHT LAB,MATERIALS DIRECTORATE,MLBT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 50 Z9 51 U1 1 U2 10 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 SEP 15 PY 1993 VL 12 IS 18 BP 1413 EP 1415 DI 10.1007/BF00591592 PG 3 WC Materials Science, Multidisciplinary SC Materials Science GA LZ353 UT WOS:A1993LZ35300002 ER PT J AU HEINES, M AF HEINES, M TI SAMURAI - THE STORY OF A WARRIOR TRADITION - COOK,H SO LIBRARY JOURNAL LA English DT Book Review RP HEINES, M (reprint author), USAF,ROME LAB TECH LIB,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD SEP 15 PY 1993 VL 118 IS 15 BP 89 EP 89 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA LX301 UT WOS:A1993LX30100126 ER PT J AU LO, I MITCHEL, WC CHENG, JP AF LO, I MITCHEL, WC CHENG, JP TI MAGNETIC-FIELD-INDUCED FREE-ELECTRON AND HOLE RECOMBINATION IN SEMIMETALLIC ALXGA1-XSB/INAS QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Note ID GASB SUPER-LATTICES; PRESSURE-DEPENDENCE; INAS AB We observed the carrier-concentration dependence of the magnetic-field-induced free electron and hole recombination in semimetallic AlxGa1-xSb/InAs quantum wells. The electrons and holes recombined when the highest-hole Landau level crossed the Fermi level. The recombination continued with increasing field until all the holes vanished, leading to a semimetal-to-semiconductor transition. This transition shifted to a higher field when the electron concentration decreased. C1 USAF,WRIGHT LAB,MLPO,WRIGHT PATTERSON AFB,OH 45433. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. NR 15 TC 16 Z9 16 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 15 PY 1993 VL 48 IS 12 BP 9118 EP 9121 DI 10.1103/PhysRevB.48.9118 PG 4 WC Physics, Condensed Matter SC Physics GA LY959 UT WOS:A1993LY95900071 ER PT J AU BLATT, D KARPUR, P STUBBS, DA MATIKAS, TE AF BLATT, D KARPUR, P STUBBS, DA MATIKAS, TE TI OBSERVATIONS OF INTERFACIAL DAMAGE IN THE FIBER BRIDGED ZONE OF A TITANIUM MATRIX COMPOSITE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID THERMAL FATIGUE; CRACKING; SCS-6; MECHANICS C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP BLATT, D (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. RI Matikas, Theodore/I-2803-2012 NR 22 TC 13 Z9 14 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 15 PY 1993 VL 29 IS 6 BP 851 EP 856 DI 10.1016/0956-716X(93)90240-S PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA LP598 UT WOS:A1993LP59800026 ER PT J AU STEFKO, RM CAIN, JE LAUERMAN, WC BRANN, C PLATENBURG, RC PYKA, R AF STEFKO, RM CAIN, JE LAUERMAN, WC BRANN, C PLATENBURG, RC PYKA, R TI VERTEBRODIATASIS EXPERIMENTAL LENGTHENING OF THE JUVENILE GOAT SPINE SO SPINE LA English DT Article; Proceedings Paper CT 26TH ANNUAL MEETING OF THE SCOLIOSIS-RESEARCH-SOC CY SEP 23-26, 1992 CL KANSAS CITY, MO SP SCOLIOSIS RES SOC DE CHONDRODIASTASIS; DISTRACTION OSTEOGENESIS; DWARFISM; KYPHOSCOLIOSIS; TRUNCAL SHORTENING AB The purpose of this study is to describe the biology of spinal lengthening (vertebrodiatasis) in a juvenile goat model. A small Orthofix dynamic fixator was affixed to 5.5mm pedicular halfpins placed bilaterally at T12, L1, L5 and L6 in six juvenile goats. Distraction was performed across vertebral endplates between L1 and L5. Uninstrumented twins served as controls. Two pairs of animals were deleted due to anesthetic complications. Lumbar lengthening was successful in 3 animals resulting in an increase in length of up to 696% from L1 to L5 compared to the growth rate of the controls (mean 4.3 cm vs. mean .56 cm, respectively). Lengthening of the spinal cord was not associated with brain stem migration or spinal cord injury. RP STEFKO, RM (reprint author), WILFORD HALL USAF MED CTR,DEPT ORTHOPAED SURG,COMBINED INTEGRATED SPINAL RES UNIT,LACKLAND AFB,TX 78236, USA. NR 0 TC 5 Z9 6 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0362-2436 J9 SPINE JI SPINE PD SEP 15 PY 1993 VL 18 IS 12 BP 1616 EP 1620 DI 10.1097/00007632-199309000-00008 PG 5 WC Clinical Neurology; Orthopedics SC Neurosciences & Neurology; Orthopedics GA LX839 UT WOS:A1993LX83900008 PM 8235840 ER PT J AU WELSH, BM VONNIEDERHAUSERN, RN AF WELSH, BM VONNIEDERHAUSERN, RN TI PERFORMANCE ANALYSIS OF THE SELF-REFERENCED SPECKLE-HOLOGRAPHY IMAGE-RECONSTRUCTION TECHNIQUE SO APPLIED OPTICS LA English DT Article DE ADAPTIVE OPTICS; SPECKLE IMAGING; ATMOSPHERIC TURBULENCE; IMAGE RECONSTRUCTION ID LASER GUIDE STARS; TELESCOPES; TURBULENCE; OPTICS; PHASE AB Self-referenced speckle holography (SRSH) is a postdetection turbulence-compensation technique for obtaining diffraction-limited imagery from ground-based telescopes degraded by atmospheric turbulence. In SRSH, image-plane information is used together with wave-front distortion information to reconstruct an estimate of the object spectrum. The wave-front distortion information is obtained from a wave-front sensor in the pupil plane of the telescope. This information is used in a postprocessing environment to estimate the point spread function of the combined telescope and atmosphere. The point spread function is then used to obtain an estimate of the object intensity distribution by deconvolution. We present the results of a detailed performance analysis of SRSH. Performance is quantified in terms of a system transfer function and a system point spread function. The results show how the performance of SRSH is dependent on the sampling intervals and shot noise in the wave-front sensor. The results also indicate how the technique, for a given set of design parameters, responds to changing seeing conditions. For wave-front sensor sampling intervals of the order of a Fried coherence cell size ro and adequate light levels, SRSH boosts the high spatial frequencies (those near the diffraction limit of the telescope) to nearly 0.6. RP WELSH, BM (reprint author), USAF, INST TECHNOL, DEPT ELECT & COMP ENGN, WRIGHT PATTERSON AFB, OH 45433 USA. NR 24 TC 14 Z9 14 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD SEP 10 PY 1993 VL 32 IS 26 BP 5071 EP 5078 PG 8 WC Optics SC Optics GA LW372 UT WOS:A1993LW37200016 PM 20856312 ER PT J AU BURKE, E AF BURKE, E TI VANDENBERG SECTION PARTICIPATES IN GAS 450 SO AEROSPACE AMERICA LA English DT Article RP BURKE, E (reprint author), SII INC,GAS 450,POB 5090,VANDENBERG AFB,CA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0740-722X J9 AEROSPACE AM JI Aerosp. Am. PD SEP PY 1993 VL 31 IS 9 BP B11 EP B11 PG 1 WC Engineering, Aerospace SC Engineering GA LW164 UT WOS:A1993LW16400014 ER PT J AU TONELLI, LA PRENGER, VL REAGAN, JR WEEDN, VW WASSERMAN, DT AF TONELLI, LA PRENGER, VL REAGAN, JR WEEDN, VW WASSERMAN, DT TI A PILOT CASE-CONTROL STUDY OF THE INFLUENCE OF DNA PROFILING ON CRIMINAL INVESTIGATIONS IN MARYLAND SO AMERICAN JOURNAL OF HUMAN GENETICS LA English DT Meeting Abstract C1 UNIV MARYLAND,DIV HUMAN GENET,BALTIMORE,MD 21201. UNIV MARYLAND,INST PHILOSOPHY & PUBL POLICY,COLL PK,MD 20742. USAF,INST PATHOL,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0002-9297 J9 AM J HUM GENET JI Am. J. Hum. Genet. PD SEP PY 1993 VL 53 IS 3 SU S BP 1509 EP 1509 PG 1 WC Genetics & Heredity SC Genetics & Heredity GA LW335 UT WOS:A1993LW33501509 ER PT J AU FRANK, CA AF FRANK, CA TI AN AMERICAN BOARD OF ORTHODONTICS CASE-REPORT - THE ORTHODONTIC-SURGICAL CORRECTION OF A CLASS-I MALOCCLUSION WITH HIGH MANDIBULAR PLANE ANGLE, BIMAXILLARY PROTRUSION, AND VERTICAL MAXILLARY EXCESS SO AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS LA English DT Note AB This is the case report of a 26-year-old black woman with a Class I malocclusion and a skeletal Class II profile and vertical maxillary excess. Extraction spaces were closed, creating a Class II malocclusion to augment anticipated surgery (LeFort I osteotomy and genioplasty). The treatment result provided outstanding occlusal function and optimal facial esthetics. Attention to detail was mandatory, i.e., identify the patient's chief complaint, provide treatment options to resolve the complaint, and treat and maintain the dentition as ideally as possible. [This case was presented to the American Board of Orthodontics in partial fulfillment of the requirements for the certification process conducted by the Board.] C1 USAF,BELLEVUE,NE. NR 0 TC 1 Z9 1 U1 1 U2 4 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0889-5406 J9 AM J ORTHOD DENTOFAC JI Am. J. Orthod. Dentofac. Orthop. PD SEP PY 1993 VL 104 IS 3 BP 285 EP 297 DI 10.1016/S0889-5406(05)81732-9 PG 13 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LX342 UT WOS:A1993LX34200011 PM 8362791 ER PT J AU ARRIAGA, MA LONG, S NELSON, R AF ARRIAGA, MA LONG, S NELSON, R TI CLINICAL CORRELATES OF ACOUSTIC NEUROMA VOLUME SO AMERICAN JOURNAL OF OTOLOGY LA English DT Article; Proceedings Paper CT 1992 ANNUAL MEETING OF THE AMERICAN NEUROTOLOGIC SOC CY APR 11-12, 1992 CL DESERT SPRINGS, CA SP AMER NEUROTOL SOC ID GROWTH-RATE; RESONANCE; SURGERY AB A computer-assisted, MRI-based technique of tumor volume determination was used to correlate preoperative hearing levels and long-term postoperative facial function with acoustic neuroma volume. Preoperative hearing was studied in a group of 41 patients subjected to direct tumor volume calculations and in another group of 131 patients in whom volume was extrapolated from the acoustic neuroma volume-diameter relation. Similarly postoperative facial function was correlated with acoustic neuroma volume in another 864 patients in whom long-term follow-up was available. Preoperative hearing levels were found not to be significantly related to tumor volume. However, postoperative facial function was significantly associated with tumor volume and was best predicted as a nonlinear function of diameter. Thus, tumor volume changes are important considerations in the clinical management of acoustic neuromas. Patients should be advised that even small changes in tumor diameter (especially in larger tumors) can result in tumor volume changes that may be associated with significant changes in postoperative facial function. C1 UNIV SO CALIF,SCH MED,HOUSE EAR CLIN & HOUSE EAR INST,LOS ANGELES,CA 90033. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 16 TC 16 Z9 16 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0192-9763 J9 AM J OTOL JI Am. J. Otol. PD SEP PY 1993 VL 14 IS 5 BP 465 EP 468 PG 4 WC Otorhinolaryngology SC Otorhinolaryngology GA LU525 UT WOS:A1993LU52500009 PM 8122709 ER PT J AU GRISSOM, TE GOOTOS, PJ BROWN, TR AF GRISSOM, TE GOOTOS, PJ BROWN, TR TI PULMONARY COMPLIANCE IS NOT AFFECTED BY CHANGES IN POSITION DURING LAPAROSCOPIC SURGERY SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT GEN SURG,LACKLAND AFB,TX 78236. NR 0 TC 3 Z9 3 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A491 EP A491 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10800491 ER PT J AU HERMAN, N VANDECAR, TK JONES, D KNAPE, KG DOWNING, JW AF HERMAN, N VANDECAR, TK JONES, D KNAPE, KG DOWNING, JW TI TRANSFER OF METHOHEXITAL ACROSS THE PERFUSED HUMAN PLACENTA SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 UTHSC,DEPT ANESTHESIA,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT ANESTHESIA,LACKLAND AFB,TX 78236. VANDERBILT UNIV,DEPT ANESTHESIA,NASHVILLE,TN 37232. NR 2 TC 3 Z9 3 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A1008 EP A1008 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10801004 ER PT J AU JOHNSON, RF JOHNSON, V GONZALEZ, H ARNEY, T HERMAN, N DOWNING, JW AF JOHNSON, RF JOHNSON, V GONZALEZ, H ARNEY, T HERMAN, N DOWNING, JW TI BUPIVACAINE PHARMACOKINETICS AFTER EPIDURAL-ANESTHESIA FOR CESAREAN-SECTION SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 VANDERBILT UNIV,DEPT ANESTHESIOL,DIV OBSTET ANESTHESIA,NASHVILLE,TN 37232. WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 2 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A1015 EP A1015 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10801011 ER PT J AU PAPIER, KS GRISSOM, TE AF PAPIER, KS GRISSOM, TE TI MEAN AIRWAY PRESSURE (MAW) IS AFFECTED BY THE USE OF DIFFERENT VENTILATORS USED AS ENTRAINMENT SOURCES DURING HIGH-FREQUENCY JET VENTILATION (HFJV) SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,PSSA,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A244 EP A244 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10800244 ER PT J AU POTERACK, KA AF POTERACK, KA TI HOW DO ANESTHESIOLOGISTS PRACTICE IN CONTROVERSIAL SITUATIONS SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL PSSA,LACKLAND AFB,TX 78236. NR 0 TC 1 Z9 1 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A1111 EP A1111 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10801107 ER PT J AU VALLEY, MA ROGERS, JN GALE, DW POTERACK, KA SHEPLOCK, GJ ROMANOFF, ME AF VALLEY, MA ROGERS, JN GALE, DW POTERACK, KA SHEPLOCK, GJ ROMANOFF, ME TI ALCOHOL, BUT NOT PHENOL, DEGRADE DACRON VASCULAR GRAFT SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. UTHSC,SAN ANTONIO,TX. NR 1 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A871 EP A871 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10800870 ER PT J AU VALLEY, MA ROGERS, JN GALE, DW POTERACK, KA SHEPLOCK, GJ ROMANOFF, ME AF VALLEY, MA ROGERS, JN GALE, DW POTERACK, KA SHEPLOCK, GJ ROMANOFF, ME TI NEITHER ALCOHOL OR PHENOL, DEGRADE GORTEX VASCULAR GRAFT SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. UTHSC,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1993 VL 79 IS 3A SU S BP A870 EP A870 PG 1 WC Anesthesiology SC Anesthesiology GA LY108 UT WOS:A1993LY10800869 ER PT J AU BISSON, RU LYONS, TJ HATSEL, C AF BISSON, RU LYONS, TJ HATSEL, C TI AIRCREW FATIGUE DURING DESERT SHIELD C-5 TRANSPORT OPERATIONS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB The metrics used to define U.S. Air Force crew rest and flight duty limitations were not designed to manage surge operations such as Operation Desert Shield. Desert Shield provided an opportunity to obtain inflight data on acute and cumulative fatigue and the effect of other stressors during over-the-shoulder observations on 24 C-5 airlift crew members. Findings emphasize how sleep history, recent duty day cycles, subjective fatigue, scheduling patterns, nutrition, and billeting facilities contribute to fatigue and lower levels of alertness. The results of this fairly insignificant observational study attempt to preserve some of the aeromedical lessons of Desert Shield. The flight surgeon authors integrate their experience to outline development of a fatigue management and alertness enhancement doctrine. RP BISSON, RU (reprint author), ARMSTRONG LAB,CFTO,2540 D DR,STE 1,BROOKS AFB,TX 78235, USA. NR 11 TC 4 Z9 5 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD SEP PY 1993 VL 64 IS 9 BP 848 EP 853 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LW050 UT WOS:A1993LW05000011 PM 8216148 ER PT J AU CRUM, TD ALBERTY, RL AF CRUM, TD ALBERTY, RL TI THE WSR-88D AND THE WSR-88D OPERATIONAL SUPPORT FACILITY SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY LA English DT Article ID NEXRAD AB The Weather Surveillance Radar-1988 Doppler (WSR-88D) System is the product of the Next Generation Weather Radar (NEXRAD) program, a joint effort of the U.S. Departments of Commerce, Defense, and Transportation. WSR-88D Systems meet the common needs of the three agencies and are being installed across the United States and at selected overseas sites. These systems provide Doppler capabilities, increased receiver sensitivity, and real-time display of base and derived products that will enable forecasters to improve the detection of and give greater advanced warning of severe weather events. Many nonsevere weather and hydrological applications are also expected. WSR-88D Systems will be modified and enhanced during their operational life to meet changing requirements, technological advancements, and improved understanding of the application of these systems to real-time operations. The NEXRAD agencies established the Operational Support Facility (OSF) to provide centralized WSR-88D operator training and software, maintenance, and engineering support. This paper provides an overview of the NEXRAD program, the WSR-88D System, and the role of the OSF in supporting the WSR-88D and its users. Examples of some of the products are also presented. RP CRUM, TD (reprint author), USAF,HEADQUARTERS AIR WEATHER SERV,OPERATING LOCAT K,NORMAN,OK, USA. NR 22 TC 256 Z9 259 U1 3 U2 6 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0003-0007 J9 B AM METEOROL SOC JI Bull. Amer. Meteorol. Soc. PD SEP PY 1993 VL 74 IS 9 BP 1669 EP 1687 DI 10.1175/1520-0477(1993)074<1669:TWATWO>2.0.CO;2 PG 19 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA LY463 UT WOS:A1993LY46300001 ER PT J AU ARMBRUSTER, DA AF ARMBRUSTER, DA TI ERRONEOUS ASSAY PRINCIPLE FOR PROSTATE-SPECIFIC ANTIGEN - REPLY SO CLINICAL CHEMISTRY LA English DT Letter RP ARMBRUSTER, DA (reprint author), USAF,DRUG TESTING LAB,2601 W RD,SUITE 1,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC CLINICAL CHEMISTRY PI WASHINGTON PA 2101 L STREET NW, SUITE 202, WASHINGTON, DC 20037-1526 SN 0009-9147 J9 CLIN CHEM JI Clin. Chem. PD SEP PY 1993 VL 39 IS 9 BP 2020 EP 2021 PG 2 WC Medical Laboratory Technology SC Medical Laboratory Technology GA LX465 UT WOS:A1993LX46500055 ER PT J AU MILOH, T PACHTER, M SEGAL, A AF MILOH, T PACHTER, M SEGAL, A TI THE EFFECT OF A FINITE ROLL RATE ON THE MISS-DISTANCE OF A BANK-TO-TURN MISSILE SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article ID GAME AB We consider a three-dimensional pursuit-evasion situation where a highly maneuverable evader, which we model as a ''pedestrian'' a la Isaacs, is engaged by a faster-pursuer. The pursuer has limited maneuverability, that is, the pursuer has a minimal turning radius, and in order to change the spatial direction of his velocity vector, he must first re-align his thrust vector in a similar manner to a bank-to-turn missile. The state space of the ensuing differential game is three-dimensional and its complexity is intermediate between Isaac's [1] classical ''Homicidal Chauffeur'' and ''Two Car'' differential games. This new DG is solved as a game of kind, and a capture criterion for a faster but less maneuverable pursuer is analytically established in terms of the game parameters. C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,ENG,2950 P ST,WRIGHT PATTERSON AFB,OH 45433. ISRAEL AIRCRAFT IND LTD,LOD,ISRAEL. RP MILOH, T (reprint author), TEL AVIV UNIV,FAC ENGN,IL-69978 TEL AVIV,ISRAEL. NR 5 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 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD SEP PY 1993 VL 26 IS 6 BP 43 EP 54 DI 10.1016/0898-1221(93)90116-D PG 12 WC Mathematics, Applied SC Mathematics GA LQ245 UT WOS:A1993LQ24500005 ER PT J AU YAVIN, Y PACHTER, M AF YAVIN, Y PACHTER, M TI PURSUIT-EVASION DIFFERENTIAL-GAMES .3. PREFACE SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Editorial Material C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. RP YAVIN, Y (reprint author), UNIV PRETORIA,DEPT ELECT & ELECTR ENGN,PRETORIA 0002,SOUTH AFRICA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD SEP PY 1993 VL 26 IS 6 BP R9 EP R9 PG 1 WC Mathematics, Applied SC Mathematics GA LQ245 UT WOS:A1993LQ24500001 ER PT J AU MIDDLETON, RM KIRKPATRICK, MB AF MIDDLETON, RM KIRKPATRICK, MB TI CLINICAL USE OF COCAINE - A REVIEW OF THE RISKS AND BENEFITS SO DRUG SAFETY LA English DT Article AB Following the isolation of cocaine from the extract of coca leaves in the late 1700s by Albert Neiman, the local anaesthetic properties of the drug have been evaluated. The anaesthetic effect of cocaine is believed to be the result of reversible blockade of nervous impulse conduction by the prevention of sodium ion movement within the cell membrane. The many undesired effects, however, are the result of adrenergic stimulation by means of prevention of noradrenaline (norepinephrine) uptake. The clinical use of cocaine in the modem era is associated primarily with surgical procedures involving the manipulation of mucous membranes, particularly those of the upper respiratory tract. Recently, based on problems with the potential for illicit use and adverse effects, alternative regimens have been investigated. In some settings these have been superior to cocaine. Further studies comparing various anaesthetic regimens are warranted. RP MIDDLETON, RM (reprint author), USAF,MED CTR,MED PROCEDURES CLIN,KEESLER AFB,MS 39534, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ADIS INTERNATIONAL LTD PI AUCKLAND PA 41 CENTORIAN DR, PRIVATE BAG 65901, MAIRANGI BAY, AUCKLAND 10, NEW ZEALAND SN 0114-5916 J9 DRUG SAFETY JI Drug Saf. PD SEP PY 1993 VL 9 IS 3 BP 212 EP 217 DI 10.2165/00002018-199309030-00006 PG 6 WC Public, Environmental & Occupational Health; Pharmacology & Pharmacy; Toxicology SC Public, Environmental & Occupational Health; Pharmacology & Pharmacy; Toxicology GA LY696 UT WOS:A1993LY69600006 PM 8240726 ER PT J AU WOODY, JR CLAY, JP GREEN, SG AF WOODY, JR CLAY, JP GREEN, SG TI DOES TQM (TOTAL QUALITY MANAGEMENT) PAY SO FINANCIAL MANAGEMENT LA English DT Letter C1 FT LEWIS COLL,DURANGO,CO 81301. RP WOODY, JR (reprint author), USAF ACAD,DEPT MANAGEMENT,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FINANCIAL MANAGEMENT ASSOC PI TAMPA PA UNIV SOUTH FLORIDA, COLL BUSINESS ADMINISTRATION, 4202 E FOWLER, TAMPA, FL 33620 SN 0046-3892 J9 FINANC MANAGE JI Financ. Manage. PD FAL PY 1993 VL 22 IS 3 BP 25 EP 26 DI 10.2307/3665923 PG 2 WC Business, Finance SC Business & Economics GA MH659 UT WOS:A1993MH65900003 ER PT J AU GOBLE, JR SUAREZ, PF ROGERS, SK RUCK, DW ARNDT, C KABRISKY, M AF GOBLE, JR SUAREZ, PF ROGERS, SK RUCK, DW ARNDT, C KABRISKY, M TI A FACIAL FEATURE COMMUNICATIONS INTERFACE FOR THE NONVOCAL SO IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE LA English DT Article RP GOBLE, JR (reprint author), USAF,DEPT ELECT & COMP ENGN,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0739-5175 J9 IEEE ENG MED BIOL JI IEEE Eng. Med. Biol. Mag. PD SEP PY 1993 VL 12 IS 3 BP 46 EP & DI 10.1109/51.232340 PG 0 WC Engineering, Biomedical; Medical Informatics SC Engineering; Medical Informatics GA LX094 UT WOS:A1993LX09400009 ER PT J AU PARROTT, RW STYTZ, MR AMBURN, P ROBINSON, D AF PARROTT, RW STYTZ, MR AMBURN, P ROBINSON, D TI TOWARDS STATISTICALLY OPTIMAL INTERPOLATION FOR 3-D MEDICAL IMAGING SO IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE LA English DT Article ID SHAPE-BASED INTERPOLATION; ALGORITHMS; DISPLAY C1 USAF,DEPT AERONAUT & ASTRONAUT,WASHINGTON,DC 20330. RP PARROTT, RW (reprint author), USAF,DEPT ELECT & COMP ENGN,WASHINGTON,DC 20330, USA. NR 33 TC 19 Z9 20 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0739-5175 J9 IEEE ENG MED BIOL JI IEEE Eng. Med. Biol. Mag. PD SEP PY 1993 VL 12 IS 3 BP 49 EP 59 DI 10.1109/51.232341 PG 11 WC Engineering, Biomedical; Medical Informatics SC Engineering; Medical Informatics GA LX094 UT WOS:A1993LX09400010 ER PT J AU LIOU, JJ LIOU, LL HUANG, CI BAYRAKTAROGLU, B AF LIOU, JJ LIOU, LL HUANG, CI BAYRAKTAROGLU, B TI A PHYSICS-BASED, ANALYTICAL HETEROJUNCTION BIPOLAR-TRANSISTOR MODEL INCLUDING THERMAL AND HIGH-CURRENT EFFECTS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID P-N; ALGAAS/GAAS; RESISTANCE; TIME; HBTS AB We present a detailed, analytical model to predict the dc and high-frequency performance of AlGaAs/GaAs graded heterojunction bipolar transistors (HBT's). The model is developed based on the relevant device physics such as current-induced base pushout and thermal effect. The current gain, cutoff frequency, and maximum frequency versus the collector current density, which is a function of the applied voltage as well as the corresponding temperature in the HBT, are calculated. Our results suggest that the conventional HBT model, which assumes the HBT temperature is the same as that of the ambient, can overestimate the three figures of merit considerably when the collector current density is high. Furthermore, it is shown that the present model correctly explains the experimentally observed HBT high-current behavior like the rapid fall-off of the current gain and cutoff frequency. The model predictions compare favorably with the results obtained from a model which solves numerically the Poisson and continuity equations coupled with the lattice heat equation. C1 SOLID STATE ELECTR DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. N CAROLINA STATE UNIV,COLL ENGN,RALEIGH,NC 27607. RP LIOU, JJ (reprint author), UNIV CENT FLORIDA,DEPT ELECT & COMP ENGN,ORLANDO,FL 32816, USA. NR 19 TC 37 Z9 41 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD SEP PY 1993 VL 40 IS 9 BP 1570 EP 1577 DI 10.1109/16.231560 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA LU394 UT WOS:A1993LU39400001 ER PT J AU LEWICKI, TF FOWLER, NL AF LEWICKI, TF FOWLER, NL TI THE EFFECT OF CORROSION MYTHS ON NATIONAL ELECTRICAL STANDARDS SO IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS LA English DT Article AB It appears that many national codes and standards have promulgated requirements concerning electrical grounding without a real consideration of corrosion basics. An example of this is the listing of stainless steel as an acceptable, perhaps preferred, material for ground rods. Presumably this was done in the belief that stainless steel does not corrode. A review of corrosion basics along with a detailed account of how stainless steel does corrode is provided. Examples of other misconceptions on the part of electrical engineers, as well as corrosion engineers, are also discussed. This discussion underlines the need for a strong liaison between the IEEE and the National Association of Corrosion Engineers (NACE). C1 AFCESA,ENE,TYNDALL AFB,FL 32403. RP LEWICKI, TF (reprint author), USAF,CORROS CONTROL PROGRAM,PANAMA CITY,FL 32404, USA. NR 9 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 0093-9994 J9 IEEE T IND APPL JI IEEE Trans. Ind. Appl. PD SEP-OCT PY 1993 VL 29 IS 5 BP 1006 EP 1011 DI 10.1109/28.245726 PG 6 WC Engineering, Multidisciplinary; Engineering, Electrical & Electronic SC Engineering GA MK083 UT WOS:A1993MK08300026 ER PT J AU HELLWIG, H AF HELLWIG, H TI TIME AND FREQUENCY APPLICATIONS SO IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL LA English DT Article ID ENVIRONMENTAL SENSITIVITIES; STANDARDS; PHYSICS AB Atomic clocks and quartz crystal oscillators are essential for the functioning of today's technological world. This paper provides an overview of their typical capabilities in terms of available precision of time and frequency signals followed by a discussion of the generation, comparison, and dissemination of time and frequency. The principal focus of this paper is directed at a survey of uses of time and frequency in navigation, communication, and science. Examples are given that include the Global Positioning System, a satellite-based global navigation system, and general and dedicated communication networks, as well as experiments in general relativity and radio astronomy. An estimate of the number of atomic clocks and crystal oscillators that are in actual use worldwide concludes the paper. RP HELLWIG, H (reprint author), USAF,OFF SCI RES,BOLLING AFB,DC 20332, USA. NR 14 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 0885-3010 J9 IEEE T ULTRASON FERR JI IEEE Trans. Ultrason. Ferroelectr. Freq. Control PD SEP PY 1993 VL 40 IS 5 BP 538 EP 543 DI 10.1109/58.238107 PG 6 WC Acoustics; Engineering, Electrical & Electronic SC Acoustics; Engineering GA MA444 UT WOS:A1993MA44400015 PM 18263218 ER PT J AU BRUNO, JG KIEL, JL AF BRUNO, JG KIEL, JL TI LUMINOL AND DIAZOLUMINOMELANIN AS INDICATORS OF HL-60 CELL-DIFFERENTIATION SO IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL LA English DT Article DE CHEMILUMINESCENCE; DIFFERENTIATION; HL-60 CELLS; MELANIN; SUBCELLULAR FRACTIONATION ID DEPENDENT CHEMI-LUMINESCENCE; PROMYELOCYTIC LEUKEMIA-CELLS; LINE HL-60; MYELOPEROXIDASE; MACROPHAGES; MATURATION; INDUCTION AB This paper describes use of a novel substituted melanin which is useful in detection of differentiating leukemia cells an their membranes. Comparisons of luminol-(5-amino-2,3-dihydro-1,4-phthalazinedione) and diazoluminomelanin (DALM)-mediated chemiluminescence (CL) were made with various types of differentiated and undifferentiated HL-60 whole cells, cell lysates, and membrane fractions. Luminol had a greater CL response than DALM with HL-60 promyelocytic stem cells and differentiated macrophage-like or neutrophil-like whole cell and cell lysate preparations. However, DALM showed markedly greater CL than luminol for membrane fractions derived from each cell type. The greatest luminol-dependent CL was observed for cell types high in myeloperoxidase (MPO). The greatest DALM-mediated CL was seen with cell types that are high in MPO or strong producers of superoxide (O2-) anions. In some cases, significant differences in CL could also be distinguished on the basis of inducing agent used [i.e. dimethylsulfoxide, all-trans retinoic acid or 12-o-tetradecanoylphorbol-13-acetatel. Both luminol- and DALM-dependent CL were strongly inhibited by preincubation of cellular preparations with 3-amino-L-tyrosine (a component of DALM). Taken together, these data suggest that the reaction mechanism of luminol favors interaction with cytoplasmic MPO whereas that of DALM favors membrane interactions. Thus, both reagents may be of use in assays to detect differentiating leukocytes or their cellular components. C1 ARMSTRONG LAB,DIV DIRECTED ENERGY,BROOKS AFB,TX 78235. NR 18 TC 6 Z9 6 U1 0 U2 0 PU SOC IN VITRO BIOLOGY PI UPPER MARLBORO PA 9315 LARGO DR W #255, UPPER MARLBORO, MD 20774-4755 SN 1071-2690 J9 IN VITRO CELL DEV-AN JI In Vitro Cell. Dev. Biol.-Anim. PD SEP PY 1993 VL 29 IS 9 BP 737 EP 741 PG 5 WC Cell Biology; Developmental Biology SC Cell Biology; Developmental Biology GA MD189 UT WOS:A1993MD18900011 PM 8407717 ER PT J AU BEUTNER, EH BLASZCZYK, M JABLONSKA, S CHORZELSKI, TP WHITE, D WOLSKA, H DAVIS, B AF BEUTNER, EH BLASZCZYK, M JABLONSKA, S CHORZELSKI, TP WHITE, D WOLSKA, H DAVIS, B TI PRELIMINARY, DERMATOLOGICAL 1ST STEP CRITERIA FOR LUPUS-ERYTHEMATOSUS AND 2ND STEP CRITERIA FOR SYSTEMIC LUPUS-ERYTHEMATOSUS SO INTERNATIONAL JOURNAL OF DERMATOLOGY LA English DT Article ID CLASSIFICATION AB Background Comparisons of cases of systemic lupus erythematosus (SLE) with cases of rheumatoid arthritis and other rheumatologic disorders affords the basis of the 1982 revised criteria of the American Rheumatism Association (ARA) for classifying SLE cases. We address three questions: Do comparisons of LE cases with non-LE cases that have suggestive skin lesions yield criteria for use in dermatology clinics for primary classification of cases with photo distributions of skin lesions? Do comparisons of SLE with cutaneoUS LE cases yield the same or similar criteria to the revised ARA criteria for SLE? How should subacute cutaneoUS LE cases be evaluated for signs of significant systemic involvement? Methods. Discriminant analyses on 168 cases with skin lesions suggestive Of LE Were performed using data based on the ARA criteria for SLE and study factors for cutaneoUS LE suggested by the European Academy of Dermatology and Venereology. Results. These yielded two sets of criteria: (1) The 11 preliminary, dermatologic first step criteria (10 plus 1 for discoid lesions and histology) serve to classify cases as LE or non-LE. (2) The 11 preliminary, dermatologic second step criteria classify LE cases as cutaneous LE or systemic LE. Interestingly, 5 of 11 of these second step criteria differ from the 11 ARA criteria for systemic LE. These second step criteria afford a useful means of distinguishing between subacute cutaneous LE cases with or without significant systemic involvement. Conclusions. The study factors included in both the first and the second step criteria fall into three groups, notably clinical criteria, laboratory criteria, and ''added study factors.'' The latter factors distinguish between the groups compared (LE vs. non-LE and cutaneous vs. systemic LE) but not as well as the study factors included as 'criteria.'' C1 WILFORD HALL USAF MED CTR, SGHMD, DEPT DERMATOL, LACKLAND AFB, TX 78236 USA. RP BEUTNER, EH (reprint author), SUNY Buffalo, DEPT MICROBIOL & DERMATOL, 219 SHERMAN HALL, BUFFALO, NY 14214 USA. NR 7 TC 12 Z9 12 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0011-9059 J9 INT J DERMATOL JI Int. J. Dermatol. PD SEP PY 1993 VL 32 IS 9 BP 645 EP 651 DI 10.1111/j.1365-4362.1993.tb04019.x PG 7 WC Dermatology SC Dermatology GA LV265 UT WOS:A1993LV26500006 PM 8407091 ER PT J AU LUCEY, DR VANCOTT, TC LOOMIS, LD BETHKE, FR HENDRIX, CW MELCHER, GP REDFIELD, RR BIRX, DL AF LUCEY, DR VANCOTT, TC LOOMIS, LD BETHKE, FR HENDRIX, CW MELCHER, GP REDFIELD, RR BIRX, DL TI MEASUREMENT OF CEREBROSPINAL-FLUID ANTIBODY TO THE HIV-1 PRINCIPAL NEUTRALIZING DETERMINANT (V3 LOOP) SO JOURNAL OF ACQUIRED IMMUNE DEFICIENCY SYNDROMES AND HUMAN RETROVIROLOGY LA English DT Article DE CEREBROSPINAL FLUID; INTRATHECAL ANTIBODY; V3 LOOP; HIV GP120 ID HUMAN-IMMUNODEFICIENCY-VIRUS; CENTRAL-NERVOUS-SYSTEM; AIDS-RELATED COMPLEX; BLOOD-BRAIN-BARRIER; STATES AIR-FORCE; HTLV-III; MATERNAL ANTIBODIES; VERTICAL TRANSMISSION; INTRATHECAL SYNTHESIS; PEPTIDE-SYNTHESIS AB Antibody to the human immunodeficiency virus (HIV)-1 principal neutralizing determinant (V3 loop) was measured by peptide enzyme-linked immunosorbent assay (ELISA) in cerebrospinal fluid (CSF) and paired serum samples of 21 HIV-seropositive patients. These patients had normal neurologic examinations and were without neurologic symptoms. Peptide ELISA demonstrated intrathecal antibody synthesis against the V3 loop of HIV(MN), the V3 loop of HIV(NY5), the V3 loop of HIV(LAI), and the entire recombinant HIV-1MN gp120 in 21 of 21, 10 of 21, one of 21, and 12 of 21 patients, respectively. Biospecific interaction analysis (BIAcore), which requires only small amounts of CSF, was also used to detect anti-V3 CSF antibody. Fine mapping of linear epitopes within the V3 region was successful in three of five patients by Geysen PIN (PEPSCAN) ELISA and discordance between epitope specificity of CSF and serum antibody was found. While detection of CSF antibody against the V3 loop of HIV(MN) by peptide ELISA has been recently reported, we add to this finding using the peptide ELISA. PEPSCAN and BIAcore methodologies as well as measuring intrathecal antibody synthesis against V3 loops from HIV strains. Application of these techniques to future studies of anti-V3 antibody in CSF from persons receiving anti-HIV-1 immunizations may provide insight into the immunoregulation of the virus in the nervous system. C1 WALTER REED ARMY INST RES,DEPT RETROVIRAL RES,WASHINGTON,DC 20307. WILFORD HALL USAF MED CTR,DEPT MED,SAN ANTONIO,TX. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 57 TC 9 Z9 9 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 1077-9450 J9 J ACQ IMMUN DEF SYND JI J. Acquir. Immune Defic. Syndr. Hum. Retrovirol. PD SEP PY 1993 VL 6 IS 9 BP 994 EP 1001 PG 8 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA MC828 UT WOS:A1993MC82800004 PM 7688046 ER PT J AU HERRLINGER, SP AF HERRLINGER, SP TI DEHAVILLAND DASH-8 AIRCRAFT AIRBORNE SYSTEM TESTING SO JOURNAL OF AIRCRAFT LA English DT Article AB The 84th Test Squadron, a part of the USAF Air Warfare Center in the Air Combat Command, was tasked with assessing the operational effectiveness and suitability of the DeHavilland Dash-8 Aircraft (E-9A) airborne platform/telemetry relay aircraft. The E-9A is an integral part of the Gulf Range instrumentation system at Tyndall AFB and Eglin AFB, Florida. It supports air-to-air (AA) missile firings against aerial drone targets for fighter pilot training and for test and evaluation. The ability to command fighters and targets and to receive telemetry data is currently limited to line of sight (LOS) because of land-based transmitters and receivers. Future operations will be conducted over-the-horizon (OTH), rather than with present LOS systems, because of the increasing number of near-shore pleasure boats and lower altitude missile launches. The E-9A is designed to extend the effective range of existing land-based instrumentation systems. It does this by providing the telemetry, communications, and drone control relay required to support OTH missions in the Gulf of Mexico. It also provides radar surveillance of boats in the Gulf to establish a clear area free of boats for missile launches. This publication covers the qualification operational test and evaluation of the E-9A which was an evaluation of its capability to provide Gulf Range users with radar sea surveillance, telemetry relay, ultrahigh frequency (UHF) radio relay, and Gulf Range drone control relay. RP HERRLINGER, SP (reprint author), USAF,CTR AIR WARFARE,TYNDALL AFB,FL 32403, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD SEP-OCT PY 1993 VL 30 IS 5 BP 578 EP 585 DI 10.2514/3.46385 PG 8 WC Engineering, Aerospace SC Engineering GA MA615 UT WOS:A1993MA61500003 ER PT J AU STANEK, MJ VISBAL, MR AF STANEK, MJ VISBAL, MR TI INVESTIGATION OF VORTEX DEVELOPMENT ON A PITCHING SLENDER BODY OF REVOLUTION SO JOURNAL OF AIRCRAFT LA English DT Article AB A computational study of the unsteady now about a pitching 3.5-caliber tangent ogive forebody is presented. The flow is simulated using the full three-dimensional unsteady Navier-Stokes equations and a time-accurate implicit algorithm. Effects of grid resolution and a comparison of solutions using full Navier-Stokes and the thin-layer approximation are included. The forebody is simulated in a ''pitch-up to 20 deg and hold'' maneuver, and two different pitch-axis locations are used in the study. Examination of the unsteady vorticity field for the pitch-up cases reveals the formation of strong shear layers as the body decelerates, and their roll-up into vortical structures in a process similar to that observed in airfoil dynamic stall. Pronounced vortex/surface interactions are seen which produce multiple secondary separation regions, ejection of vorticity from the surface, and embedded regions of high suction. RP STANEK, MJ (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 3 Z9 6 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD SEP-OCT PY 1993 VL 30 IS 5 BP 711 EP 718 DI 10.2514/3.46402 PG 8 WC Engineering, Aerospace SC Engineering GA MA615 UT WOS:A1993MA61500020 ER PT J AU BENINATI, W DERDAK, S DIXON, PF GRIDER, DJ STROLLO, DC HENSLEY, RE LUCEY, DR AF BENINATI, W DERDAK, S DIXON, PF GRIDER, DJ STROLLO, DC HENSLEY, RE LUCEY, DR TI PULMONARY EOSINOPHILS EXPRESS HLA-DR IN CHRONIC EOSINOPHILIC PNEUMONIA SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Article DE PULMONARY EOSINOPHILIA; EOSINOPHILS; HLA-DR ANTIGEN; BRONCHOALVEOLAR LAVAGE FLUID; ASTHMA ID PERFUSED RAT LUNGS; MEDIATED INJURY; INFLAMMATION; FIBROSIS; INCREASE; ASTHMA; CELLS AB Background: Chronic eosinophilic pneumonia is a rare idiopathic disorder. What role the eosinophil plays in the pathogenesis of this disease is unknown. The recent finding that mature eosinophils can express the class II major histocompatibility complex molecule HLA-DR suggests an immunologic role, perhaps through antigen presentation. The purpose of this research was to determine whether lung-derived eosinophils exhibit in vivo expression of HLA-DR. Methods: Eosinophils were obtained simultaneously from bronchoalveolar lavage and peripheral blood from a 59-year-old woman with asthma and chronic eosinophilic pneumonia. Eosinophil-enriched aliquots of peripheral blood were cocultured with human lung fibroblasts (with or without additional granulocyte-macrophage colony-stimulating factor). The percentage of cells expressing HLA-DR was quantitated by flow cytometric analysis. Results: Eosinophils derived from bronchoalveolar lavage displayed in vivo expression of HLA-DR (86%) in contrast to those from peripheral blood (7%), suggesting compartmentalization of eosinophil activation within the lung. Peripheral blood eosinophils retained the capacity for HLA-DR expression when coincubated with lung fibroblasts (83%) with augmentation by granulocyte-macrophage colony-stimulating factor (93%). Conclusion: These data demonstrate that lung eosinophil HLA-DR expression occurs in vivo; it may contribute to the pathogenesis of inflammatory lung injury. C1 WILFORD HALL USAF MED CTR,DEPT PULM DIS,CLIN INVEST DIRECTORATE,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,DEPT PATHOL,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,DEPT RADIOL,SAN ANTONIO,TX. NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892. NR 36 TC 34 Z9 34 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 SEP PY 1993 VL 92 IS 3 BP 442 EP 449 DI 10.1016/0091-6749(93)90123-W PG 8 WC Allergy; Immunology SC Allergy; Immunology GA LX309 UT WOS:A1993LX30900010 PM 8360395 ER PT J AU ROBERTSON, DD MALL, S AF ROBERTSON, DD MALL, S TI MICROMECHANICAL RELATIONS FOR FIBER-REINFORCED COMPOSITES USING THE FREE TRANSVERSE-SHEAR APPROACH SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE COMPOSITE MICROMECHANICS; MICROSTRESSES; INTERFACIAL EFFECTS; ELASTOPLASTICITY; RESIDUAL THERMAL STRESSES; CONSTITUTIVE EQUATIONS; FIBER COMPOSITES; MECHANICAL PROPERTIES ID METAL-MATRIX COMPOSITES; BEHAVIOR AB The formulation of a new three-dimensional micromechanical model for fiber reinforced material is presented. It is based on the relaxation of the coupling effect between the normal and shear stresses. The simplicity of the model lends itself very well to the inclusion of nonlinear behavior while maintaining the three-dimensional capability. Present nonlinear capabilities that have been added to the model include a thermoelastic-plastic analysis employing the Prandtl-Reuss flow relations with a strain hardening parameter and both isotropic and kinematic hardening. Results from the present analysis are compared in different cases with their counterparts from finite element solutions and experiment. In addition, this micromechanical analysis is extended to model a weak fiber/matrix bond. RP ROBERTSON, DD (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 38 Z9 38 U1 1 U2 1 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0884-6804 J9 J COMPOS TECH RES JI J. Compos. Technol. Res. PD FAL PY 1993 VL 15 IS 3 BP 181 EP 192 PG 12 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA MA274 UT WOS:A1993MA27400001 ER PT J AU HANSEN, SR MONTGOMERY, S AF HANSEN, SR MONTGOMERY, S TI EFFECT OF RESTORATION THICKNESS ON THE SEALING ABILITY OF TERM SO JOURNAL OF ENDODONTICS LA English DT Article ID CORONAL MICROLEAKAGE; TEMPORARY; TEETH AB An in vitro study was done using a fluid filtration device to compare microleakage of Temporary Endodontic Restorative Material (TERM) at various thicknesses. Forty-four extracted mandibular molars had their roots removed at the cementoenamel junction, occlusal table flattened, and a standardized endodontic access made in the crown. The teeth were restored with TERM in thicknesses of 1, 2, 3, and 4 mm, and quantitatively measured for leakage (microliters/min) at intervals of 1 and 24 h and 1, 3, and 5 wk. Thermocycling was accomplished at the 5-wk interval. Positive controls received 4-mm-thick IRM or gutta-percha restorations and were measured at 24 h only. Repeated measures of analysis of variance found no significant difference (p < 0.05) in leakage values in any group over time or between any of the different thicknesses. Positive controls showed significantly more leakage than all other groups. TERM maintained as tight a seal at 1-, 2-, and 3-mm thicknesses as it did at 4 mm and may be suited for clinical situations where less than 4 mm of restorative space exists. C1 WILFORD HALL USAF MED CTR,DEPT ENDODONT,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,GRAD DIV ENDODONT,SAN ANTONIO,TX 78284. NR 20 TC 11 Z9 13 U1 1 U2 3 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD SEP PY 1993 VL 19 IS 9 BP 448 EP 452 DI 10.1016/S0099-2399(06)80531-5 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LW150 UT WOS:A1993LW15000003 PM 8263451 ER PT J AU AITKEN, MD MCCOY, RP AF AITKEN, MD MCCOY, RP TI BIOLOGICAL TREATMENT OF WASTE-WATER FROM NITROSOPHENOL PRODUCTION SO JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE LA English DT Article AB Nitrosophenol is an intermediate organic chemical used in dye synthesis. Wastewater from nitrosophenol production is high-strength in terms of chemical oxygen demand (COD), phenol, and total dissolved solids concentrations. Previous reports on treatment of wastewaters containing nitrosophenol addressed chemical oxidation methods. Biological treatment of nitrosophenol wastewater was evaluated in this study using a bench-scale sequencing batch reactor. Substrate inhibition by phenol was observed, but methods to overcome inhibitory effects were developed. Biodegradation of nitrosophenol was concluded to occur by co-metabolism in the presence of phenol, based primarily on COD balances and by ruling out abiotic mechanisms of nitrosophenol removal. The biomass developed in the reactor was unable to grow on nitrosophenol as a sole carbon source, and consisted predominantly of two eukaryotic morphotypes and a dispersed bacterial population. Based on results from the study, nitrosophenol wastewater is amenable to biological treatment but the effluent may require further treatment before discharge. C1 USAF,ARMSTRONG LAB,WATER QUAL BRANCH,BROOKS AFB,TX 78235. RP AITKEN, MD (reprint author), UNIV N CAROLINA,SCH PUBL HLTH,DEPT ENVIRONM SCI & ENGN,CHAPEL HILL,NC 27599, USA. RI Aitken, Michael/C-2285-2009 NR 11 TC 9 Z9 9 U1 0 U2 1 PU ASCE-AMER SOC CIVIL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2398 SN 0733-9372 J9 J ENVIRON ENG-ASCE JI J. Environ. Eng.-ASCE PD SEP-OCT PY 1993 VL 119 IS 5 BP 871 EP 889 DI 10.1061/(ASCE)0733-9372(1993)119:5(871) PG 19 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA LY858 UT WOS:A1993LY85800009 ER PT J AU SPARKS, A BANDA, SS AF SPARKS, A BANDA, SS TI APPLICATION OF STRUCTURED SINGULAR-VALUE SYNTHESIS TO A FIGHTER AIRCRAFT SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB The results of a design study to examine the control of a fighter aircraft at high angles of attack are presented. The flight condition considered represents an extreme point along a demanding, large angle maneuver. The control objective is to attain acceptable flying qualities despite variations and uncertainty in the aircraft's aerodynamic coefficients. Control laws are developed for a linear model of the aircraft using structured singular value synthesis to take the parameter uncertainty structure into account. Desired flying qualities are embedded in ideal models of the angle of attack, sideslip angle, and stability axis roll rate responses to pilot inputs. The control objective is met by minimizing the weighted error between the ideal model outputs and the plant outputs and including structured parameter uncertainty in the design model. Analysis of the closed-loop system assuming interdependent parameter variations is done to evaluate conservativeness. Low-order optimal Hankel norm approximations of balanced realizations of the control laws are found that maintain the performance and robustness characteristics of the full-order controllers. C1 WRIGHT LAB,DIV FLIGHT CONTROLS,WRIGHT PATTERSON AFB,OH 45433. NR 10 TC 4 Z9 5 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1993 VL 16 IS 5 BP 940 EP 947 DI 10.2514/3.21105 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA LW547 UT WOS:A1993LW54700019 ER PT J AU ADAMS, RJ SPARKS, A BANDA, SS AF ADAMS, RJ SPARKS, A BANDA, SS TI FULL ENVELOPE MULTIVARIABLE CONTROL LAW SYNTHESIS FOR A HIGH-PERFORMANCE TEST AIRCRAFT SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB A full envelope multivariable flight control system is developed for the Variable Stability In-Flight Simulator Test Aircraft (VISTA). Separate control laws are designed for the longitudinal and lateral directional axes. Output feedback controllers with integral error feedback are created using linear quadratic synthesis and simple linear transformations. Longitudinal stick inputs are used to generate an angle-of-attack command at low-dynamic pressure and a normal acceleration command at high-dynamic pressure. Lateral stick inputs are used to generate a stability axis roll rate command, and rudder pedal inputs are used to generate a sideslip command. Linear point designs are integrated into a gain schedule to create a full envelope nonlinear control system. Flying qualities are evaluated according to military standards and shown to be satisfactory for a wide operating envelope. Classical gain and phase margins and analysis of the structured singular value show robustness to be acceptable for a wide operating envelope. C1 WRIGHT LAB,DIV FLIGHT CONTROLS,WRIGHT PATTERSON AFB,OH. RP ADAMS, RJ (reprint author), WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1993 VL 16 IS 5 BP 948 EP 955 DI 10.2514/3.21106 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA LW547 UT WOS:A1993LW54700020 ER PT J AU MAARTENSE, I SARKAR, AK AF MAARTENSE, I SARKAR, AK TI ANNEALING OF PRESSURE-INDUCED STRUCTURAL DAMAGE IN SUPERCONDUCTING BI-PB-SR-CA-CU-O CERAMIC SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID SYSTEM; PHASES AB Ac susceptibility measurements have been used to monitor the changes in the superconductive properties of sintered and uniaxially pressed samples of Pb-stabilized 2223-phase bismuth cuprate ceramic as the structural damage was annealed in air in a sequence of steps in temperature between 500 and 850-degrees-C. It is concluded that below 600-degrees-C a relaxation of residual stresses is responsible for a 2% shrinkage in sample volume and a small improvement in bulk superconductive transition temperature, T(c). Above 700-degrees-C, a recovery of the original properties occurs through grain regrowth governed by an activation energy of approximately 200 kJ/mol. However, in the region between 600 and 700-degrees-C, a decrease in T(c) of approximately 40 K appears to be the result of plastic flow and amorphization associated with local decomposition of 2223 which reduces the effective grain size and weakens the intergranular superconductive coupling. C1 UNIV DAYTON,RES INST,DIV MET & CERAM,DAYTON,OH 45469. RP MAARTENSE, I (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 4 Z9 4 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0884-2914 J9 J MATER RES JI J. Mater. Res. PD SEP PY 1993 VL 8 IS 9 BP 2177 EP 2186 DI 10.1557/JMR.1993.2177 PG 10 WC Materials Science, Multidisciplinary SC Materials Science GA LU576 UT WOS:A1993LU57600009 ER PT J AU RICHARDSON, RC AF RICHARDSON, RC TI SOLAR POWER - THE NEXT GREAT LEAP FORWARD SO JOURNAL OF SOCIAL POLITICAL AND ECONOMIC STUDIES LA English DT Article AB The U.S. Aerospace Industry is in trouble. By virtue of defense cutbacks it is losing the business that maintained it at the ''cutting edge'' of U.S. technology. Not only os this having a major impact on scientific and engineering employment but it is threatening the U.S. ability to maintain a leading role in commercial aerospace which, in turn. will adversely impact America's economy, balance of trade, and eventually national security. Switching aerospace from defense to commercial products will not correct this trend. This industry group is not structured to survive without major government programs. There is, however, one solution. This would be for the U.S. to take a leading role in producing and providing solar energy on a global scale. The time has come to do this. Most of the major technologies required are now in hand. The cost of finishing the research required and building and deploying the necessary space based power plants are now reasonable considering the numerous benefits to be realized. Other major powers, led by Japan, are beginning to realize this and are actively pursuing programs. Unless America shows more interest in this area than is now the case it risks losing its world power position in the next Century. RP RICHARDSON, RC (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COUNCIL SOCIAL & ECON STUDIES PI WASHINGTON PA C/O EDITOR PO BOX 34070 NW, WASHINGTON, DC 20043 SN 0278-839X J9 J SOC POLIT ECON ST JI J. Soc. Polit. Econ. Stud. PD FAL PY 1993 VL 18 IS 3 BP 259 EP 278 PG 20 WC Social Sciences, Interdisciplinary SC Social Sciences - Other Topics GA ME077 UT WOS:A1993ME07700001 ER PT J AU MCHUGH, CP AF MCHUGH, CP TI DISTRIBUTIONAL RECORDS FOR AEDES MOSQUITOS FROM THE UNITED-STATES-AIR-FORCE OVITRAPPING PROGRAM-1992 SO JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION LA English DT Note ID ALBOPICTUS; AEGYPTI; TRISERIATUS; CULICIDAE; DIPTERA; FLORIDA AB During 1992, ovitrapping to sample populations of container-breeding Aedes was conducted at 28 U.S. Air Force installations in North America. Aedes albopictus was collected at 19 installations. The collections of Ae. albopictus at Goodfellow Air Force base (AFB), TX, and Moody AFB, GA, represent new records for Tom Green and Lowndes counties, respectively. Six installations were positive for Ae. aegypti; 13 were positive for Aedes triseriatus. RP MCHUGH, CP (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,2402 E DR,BROOKS AFB,TX 78235, USA. NR 12 TC 9 Z9 9 U1 2 U2 3 PU AMER MOSQUITO CONTROL ASSN INC PI LAKE CHARLES PA 707-A EAST PRIEN LAKE ROAD, PO BOX 5416, LAKE CHARLES, LA 70606-5416 SN 8756-971X J9 J AM MOSQUITO CONTR JI J. Am. Mosq. Control Assoc. PD SEP PY 1993 VL 9 IS 3 BP 352 EP 355 PG 4 WC Entomology SC Entomology GA MC443 UT WOS:A1993MC44300021 PM 8245948 ER PT J AU ROGGEMANN, MC MEINHARDT, JA AF ROGGEMANN, MC MEINHARDT, JA TI IMAGE-RECONSTRUCTION BY MEANS OF WAVE-FRONT SENSOR MEASUREMENTS IN CLOSED-LOOP ADAPTIVE-OPTICS SYSTEMS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID LASER GUIDE STARS; ATMOSPHERIC-TURBULENCE; PERFORMANCE ANALYSIS; DECONVOLUTION; COMPENSATION; RESOLUTION; MIRRORS AB Theoretical and experimental investigations of the imaging technique referred to as speckle holography have shown that wave-front information can be used in the postprocessing of astronomical data to improve the quality of images. In a closed-loop adaptive-optics system the wave-front sensor is continuously measuring the residual wave-front error. Thus wave-front information is continuously available for use in image reconstruction. We show here that wave-front information in a closed-loop adaptive-optics system, used in a postprocessing scheme, can improve the phase of the compensated optical-transfer function in systems with finite delays between wave-front sensing and phase correction. This technique is closely related to speckle holography and is referred to here as compensated speckle holography. This method requires good spatial sampling of the residual phase error and degrades gracefully as the wave-front sensor signal-to-noise ratio decreases. Also, the technique can be used to reduce the required closed-loop bandwidth of an imaging system, permitting longer integration times in the wave-front sensor, and thus allowing dimmer objects to be imaged without the use of an artificial guide star. C1 USAF,PHILLIPS LAB,DIV LASERS & IMAGING,KIRTLAND AFB,NM 87117. NR 29 TC 22 Z9 22 U1 1 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD SEP PY 1993 VL 10 IS 9 BP 1996 EP 2007 DI 10.1364/JOSAA.10.001996 PG 12 WC Optics SC Optics GA LY191 UT WOS:A1993LY19100018 ER PT J AU WOLF, PJ CHRISTENSEN, TM COIT, NG SWINFORD, RW AF WOLF, PJ CHRISTENSEN, TM COIT, NG SWINFORD, RW TI THIN-FILM PROPERTIES OF GERMANIUM OXIDE SYNTHESIZED BY PULSED-LASER SPUTTERING IN VACUUM AND OXYGEN ENVIRONMENTS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID EXCIMER LASER; OPTICAL-PROPERTIES; KNUDSEN-LAYER; DEPOSITION; ABLATION; EVAPORATION; GEO2 AB Germanium oxide thin films were deposited on Si substrates at ambient temperature using pulsed laser sputtering of GeO2 targets in both vacuum and oxygen environments. The structure and composition of these films were deduced from infrared transmittance and Auger electron spectroscopy measurements. The film properties were strongly influenced by the pressure of the background reactive gas and the laser fluence during deposition with O2. The vacuum deposited films had a low oxygen content and the film's stoichiometry varied from metal rich at the center to oxidelike near the edges of the film. The films deposited in oxygen appeared stoichiometric and they showed no content variation with radius. Ellipsometry studies indicated, however, that the oxygen grown films were porous. The trends observed in growing these films under various conditions are discussed with respect to potential reaction kinetics in the plume and gas expansion phenomena. C1 UNIV COLORADO,DEPT PHYS,COLORADO SPRINGS,CO 80933. RP WOLF, PJ (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 28 TC 17 Z9 17 U1 0 U2 5 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 SEP-OCT PY 1993 VL 11 IS 5 BP 2725 EP 2732 DI 10.1116/1.578633 PG 8 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA LY318 UT WOS:A1993LY31800051 ER PT J AU MILLS, JL TAYLOR, SM FUJITANI, RM NUNEZ, A BANDYK, DF AF MILLS, JL TAYLOR, SM FUJITANI, RM NUNEZ, A BANDYK, DF TI THE ROLE OF THE DEEP FEMORAL-ARTERY AS AN INFLOW SITE FOR INFRAINGUINAL REVASCULARIZATION SO JOURNAL OF VASCULAR SURGERY LA English DT Article; Proceedings Paper CT 17TH ANNUAL MEETING OF THE SOUTHERN-ASSOC-FOR-VASCULAR-SURGERY CY JAN 29-31, 1993 CL FT LAUDERDALE, FL SP SO ASSOC VASC SURG ID REVERSED VEIN BYPASS; LIMB SALVAGE; POPLITEAL AB Purpose: Although the deep femoral artery (DFA) is well acknowledged as an outflow vessel for inflow reconstruction, data are lacking concerning the suitability of the DFA as an inflow site for distal bypass. Methods: From 1986 to 1992 we performed 268 consecutive infrainguinal reversed vein bypasses, of which 56 (21%) originated from the middle or distal DFA. The indications for DFA-origin grafts included inadequate vein length, need for concomitant extended profundaplasty, and avoidance of groin scarring from previous reconstruction or infection. The surgical approach to the DFA (standard, posteromedial, or lateral) was tailored to the patient. All grafts were monitored with serial duplex scanning surveillance. Results: Primary and secondary patency rates of DFA origin grafts were 78% and 96% at 3 years. These patency rates were no different from those grafts originating from the common femoral artery (66%; 89%), the superficial femoral artery (69%; 87%), or the popliteal artery (66%; 87%). Hemodynamic failure was detected in seven DFA-origin grafts, but only one resulted from disease in the common femoral artery or DFA proximal to the origin of the vein graft. Conclusions: Direct lateral and posteromedial approaches to the DFA were used extensively in repeat operative situations, avoiding dissection in a scarred groin and shortening the length of vein required to perform an autogenous bypass. We conclude that in appropriately selected patients, the DFA origin technique increases the versatility of lower extremity vein bypass grafting without sacrificing durability. C1 UNIV S FLORIDA,COLL MED,DEPT SURG,DIV VASC SURG,TAMPA,FL 33606. GREENVILLE MEM HOSP SYST,GREENVILLE,SC. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RP MILLS, JL (reprint author), UNIV S FLORIDA,SCH MED,DIV VASC SURG,HARBOURSIDE MED TOWER,4 COLUMBIA DR,SUITE 730,TAMPA,FL 33606, USA. OI Mills, Joseph/0000-0002-4955-4384 NR 23 TC 14 Z9 21 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0741-5214 J9 J VASC SURG JI J. Vasc. Surg. PD SEP PY 1993 VL 18 IS 3 BP 416 EP 423 PG 8 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA LY586 UT WOS:A1993LY58600010 PM 8377235 ER PT J AU BUELNA, JL AF BUELNA, JL TI GREAT-SMOKY-MOUNTAINS-NATIONAL-PARK - HOUK,R SO LIBRARY JOURNAL LA English DT Book Review RP BUELNA, JL (reprint author), VANDENBERG AFB LIB, VANDENBERG AFB, CA 93437 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS INFORMATION PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD SEP 1 PY 1993 VL 118 IS 14 BP 210 EP 210 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA LW982 UT WOS:A1993LW98200180 ER PT J AU BUELNA, JL AF BUELNA, JL TI THE BEST OF ORANGE-COUNTY CALIFORNIA - A GUIDE TO SCENIC, RECREATIONAL, AND HISTORICAL ATTRACTIONS - LEE,G SO LIBRARY JOURNAL LA English DT Book Review RP BUELNA, JL (reprint author), VANDENBERG AFB LIB,VANDENBERG AFB,CA 93437, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD SEP 1 PY 1993 VL 118 IS 14 BP 211 EP 211 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA LW982 UT WOS:A1993LW98200184 ER PT J AU GSCHWENDER, LJ SNYDER, CE FULTZ, GW AF GSCHWENDER, LJ SNYDER, CE FULTZ, GW TI SOLUBLE ADDITIVES FOR PERFLUOROPOLYALKYLETHER LIQUID LUBRICANTS SO LUBRICATION ENGINEERING LA English DT Article DE PERFLUOROPOLYALKYLETHER; GAS TURBINE ENGINE OIL; ADDITIVE ID DEGRADATION AB For years the number of soluble and effective additives for perfluoropolyalkylether (PFPAE) functional fluids has been limited primarily because of a lack of solubility in the base fluids and, to a lesser extent, because of a lack of effectiveness in the base fluids. The U.S. Air Force has an ongoing research and development program on PFPAEs as candidate gas turbine engine oils for their future engines. Additives for controlling fluid/metal corrosion, rust, and wear have been sought. During these investigations, new additives have become available both from synthesis activities, in-house and contractual, and from industry. The state-of-the-art of soluble candidate additives is presented, including performance data. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP GSCHWENDER, LJ (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 39 Z9 39 U1 0 U2 2 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD SEP PY 1993 VL 49 IS 9 BP 702 EP 708 PG 7 WC Engineering, Mechanical SC Engineering GA LX475 UT WOS:A1993LX47500005 ER PT J AU GRAHAM, EE NESARIKAR, A FORSTER, N GIVAN, G AF GRAHAM, EE NESARIKAR, A FORSTER, N GIVAN, G TI VAPOR-PHASE LUBRICATION OF HIGH-TEMPERATURE BEARINGS SO LUBRICATION ENGINEERING LA English DT Article DE VAPOR PHASE LUBRICATION; HIGH-TEMPERATURE LUBRICATION; TRICRESYLPHOSPHATE LUBRICATION; CERAMIC BEARING LUBRICATION ID SURFACES AB A ball-on-rod tester was modified to allow tricresylphosphate (TCP) to be vaporized into a carrier gas of air and delivered into the bottom section of the rolling contact tester operated at 3200 rpm. Tests were made using M50 rods and M50 balls at a pressure of 3.86 GPa and a temperature of 350-degrees-C and with silicon nitride rods and balls at a contact pressure of 5.13 GPa and temperatures of 350-degrees-C and 680-degrees-C. Using a vaporized stream of 0.5% TCP to lubricate the rod and balls for test times from 90 minutes to 8 hours, a mild polishing occurred on the active bearing surfaces. SEM photographs of the vapor lubricated surface showed a distinct tenacious deposit on the ball cage, rod, and balls. These results indicate that vapor phase lubrication can be used for high pressure bearing contacts, providing effective lubrication for temperatures up to at least 680-degrees-C. C1 AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP GRAHAM, EE (reprint author), CLEVELAND STATE UNIV,CTR ADV MFG,TRIBOL LAB,CLEVELAND,OH 44114, USA. NR 8 TC 17 Z9 18 U1 0 U2 1 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD SEP PY 1993 VL 49 IS 9 BP 713 EP 718 PG 6 WC Engineering, Mechanical SC Engineering GA LX475 UT WOS:A1993LX47500007 ER PT J AU LOMBARD, CM GOETZ, RL SEMIATIN, SL AF LOMBARD, CM GOETZ, RL SEMIATIN, SL TI NUMERICAL-ANALYSIS OF THE HOT TENSION TEST SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID STRAIN-RATE SENSITIVITY; STRESS TRIAXIALITY; POLYMERS; NECKING AB Plastic flow during the round bar, uniaxial tension test has been analyzed for conditions representative of the hot-working of metals. Two methods of analysis were employed: the finite element method and a simpler finite-difference technique using a so-called ''direct equilibrium'' approach. Variables which were investigated included material properties (strain-hardening exponents of 0 or 0.1; strain-rate sensitivity exponents between 0.02 and 0.30) and sample geometry (gage length-to-diameter ratios between 4 and 15; samples with and without tapers from the fillet to the center of the gage section). Results were summarized in terms of nominal (engineering) stress-strain curves, axial strain distributions after the onset of rapid flow localization, and total elongations. A comparison of the results from the two types of numerical analyses were very similar. This similarity was interpreted to result from the similar degrees of stress triaxiality during neck formation which were predicted via the finite element method and assumed (based on the Bridgman analysis) for the direct equilibrium approach. Total elongation predictions from the numerical models were compared to measurements and to a simple closed form analytical solution contained in the literature. The numerical results showed good agreement with the measurements but differed greatly from the analytical solution, thereby quantifying the effect of the neglect of stress triaxiality in simple analytical models on predicted elongations. C1 UES INC,DIV MAT MFG & PROC,DAYTON,OH 45432. RP LOMBARD, CM (reprint author), USAF,WRIGHT LAB,MLLN,MAT DIRECTORATE,DIV MET & CERAM,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 23 TC 8 Z9 8 U1 0 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD SEP PY 1993 VL 24 IS 9 BP 2039 EP 2047 DI 10.1007/BF02666338 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA LU882 UT WOS:A1993LU88200014 ER PT J AU TOMANELLI, SN AF TOMANELLI, SN TI THE DUTY TO ELIMINATE COMPETITIVE ADVANTAGE ARISING FROM CONTRACTOR POSSESSION OF GOVERNMENT-FURNISHED PROPERTY SO MILITARY LAW REVIEW LA English DT Article C1 USAF,DEPT JUDGE ADVOCATE GEN,WASHINGTON,DC 20330. NR 2 TC 1 Z9 1 U1 0 U2 0 PU JUDGE ADVOCATE GENERALS SCHOOL PI CHARLOTTESVILLE PA US ARMY, CHARLOTTESVILLE, VA 22903-1781 SN 0026-4040 J9 MIL LAW REV JI Milit. Law Rev. PD FAL PY 1993 VL 142 BP 141 EP 163 PG 23 WC Law SC Government & Law GA PA228 UT WOS:A1993PA22800003 ER PT J AU TENEYCK, RP AF TENEYCK, RP TI AUTOMATED EXTERNAL DEFIBRILLATOR TRAINING AND SKILLS MAINTENANCE IN AIR-FORCE EMERGENCY MEDICAL-SERVICES SYSTEMS SO MILITARY MEDICINE LA English DT Article AB In April 1989, we initiated a test program to evaluate the use of semi-automated external defibrillators in five United States Air Force Medical Treatment Facilities. The objectives of the study were 2-fold. First, the feasibility of conducting a uniform training program in a number of geographically separated basic life support emergency medical services (EMS) systems was assessed. The second objective was evaluation of psychomotor skills maintenance by Air Force Emergency Department emergency medical technicians (EMTs) in simulated resuscitations 6 months after initial training. Performance was evaluated in each of six areas for the 48 EMTs completing retesting. Forty-three of the 48 EMTs were assessed to have properly completed the resuscitations. Three of the remaining five failed to clear prior to defibrillating, and in two cases the delivery of three defibrillatory shocks was delayed for 6-8 minutes from the time of arrival at the patient's side. These results demonstrate the feasibility of providing training and maintaining proficiency in military EMS systems. RP TENEYCK, RP (reprint author), USAF,MED CTR,SGHE,DEPT ACUTE CARE SERV,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 6 Z9 6 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1993 VL 158 IS 9 BP 579 EP 581 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA LX041 UT WOS:A1993LX04100004 PM 8232991 ER PT J AU HOLCK, AR ESTEP, JE CHILDRESS, TA AF HOLCK, AR ESTEP, JE CHILDRESS, TA TI FISH AND OTHER AQUATIC ANIMAL KILLS - CAUSES AND RELEVANCE TO PUBLIC-HEALTH FOR MILITARY HEALTH-CARE PROFESSIONALS SO MILITARY MEDICINE LA English DT Article AB Environmental contamination is a public health issue. Fish or other aquatic animal kills can be a sign that contamination of the aquatic environment has occurred. They are highly visible to the public. When such kills occur in water bodies on military installations, medical personnel are often involved in the investigation to assess the public health implications of the kill or its causes. This article discusses the causes of aquatic animal kills, describes a proper response to a kill, and gives several case studies. RP HOLCK, AR (reprint author), USAF,MAT COMMAND,CTR HUMAN SYST,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1993 VL 158 IS 9 BP 587 EP 590 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA LX041 UT WOS:A1993LX04100007 PM 8232994 ER PT J AU MEYER, GD WIRTH, DB AF MEYER, GD WIRTH, DB TI AN EVALUATION OF THE UNITED-STATES-AIR-FORCES DETAILED FOLLOW-UP AUDIOMETRIC EXAMINATION PROGRAM SO MILITARY MEDICINE LA English DT Article AB The authors used information on individuals demonstrating permanent threshold shifts contained in the United States Air Force Hearing Conservation Data Registry to evaluate the effectiveness of detailed follow-up audiometric examinations as part of the USAF Hearing Conservation Program. Analysis yielded a relative risk of 1.00 with a 95% confidence interval of 0.97-1.03, which indicates a high probability that the true effect of these audiograms on the results of the next annual exam is minuscule, if not zero. RP MEYER, GD (reprint author), USAF,ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,AL-OEM,2402 E DR,BROOKS AFB,TX 78235, USA. NR 0 TC 6 Z9 6 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1993 VL 158 IS 9 BP 603 EP 605 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA LX041 UT WOS:A1993LX04100011 PM 8232998 ER PT J AU BLOOM, RW AF BLOOM, RW TI PSYCHOLOGICAL-ASSESSMENT FOR SECURITY CLEARANCES, SPECIAL ACCESS, AND SENSITIVE POSITIONS SO MILITARY MEDICINE LA English DT Article AB This paper describes issues in the psychological assessment of individuals for security clearances, special duty, and sensitive positions. Using assessment for access to sensitive compartmented information as an example, the paper identifies and explicates problems in criterion validity (the NEXUS issue), practical approaches to resolving these problems, selection of assessment techniques, and writing of the assessment report. RP BLOOM, RW (reprint author), AIR TRAINING COMMAND,MED GRP 3750,PSYCHOL SERV,SHEPPARD AFB,TX 76311, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1993 VL 158 IS 9 BP 609 EP 613 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA LX041 UT WOS:A1993LX04100013 PM 8233000 ER PT J AU PARENT, JB AF PARENT, JB TI THE IMPLEMENTATION OF THE COMPOSITE HEALTH-CARE SYSTEM INTO TOTAL QUALITY MANAGEMENT IN MILITARY MEDICAL-TREATMENT FACILITIES SO MILITARY MEDICINE LA English DT Article AB The Composite Health Care System (CHCS) is a new medical computer system which will integrate into Total Quality Management (TQM) in Department of Defense hospitals. Both are examples of integrated systems which mandate a complete re-shaping of the way the business of patient care is conducted. As a medical information management system, CHCS is an effective component of TQM and follows W. Edward Deming's TQM principles. With proper training, patience, and full support from end user and senior staff, CHCS and TQM can work together to maintain high quality standards for patient care in today's rapidly changing military medical service. RP PARENT, JB (reprint author), DEPT MED INFORMAT SYST,DIV EPIDEMIOL RES,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1993 VL 158 IS 9 BP 627 EP 630 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA LX041 UT WOS:A1993LX04100018 PM 8233005 ER PT J AU CAMPBELL, CM AF CAMPBELL, CM TI ATTITUDES AND LANGUAGE - BAKER,C SO MODERN LANGUAGE JOURNAL LA English DT Book Review RP CAMPBELL, CM (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU UNIV WISCONSIN PRESS PI MADISON PA JOURNAL DIVISION, 114 N MURRAY ST, MADISON, WI 53715 SN 0026-7902 J9 MOD LANG J JI Mod. Lang. J. PD FAL PY 1993 VL 77 IS 3 BP 372 EP 373 DI 10.2307/329108 PG 2 WC Education & Educational Research; Linguistics SC Education & Educational Research; Linguistics GA LY516 UT WOS:A1993LY51600009 ER PT J AU LOVENBERG, TW BARON, BM DELECEA, L MILLER, JD PROSSER, RA REA, MA FOYE, PE RACKE, M SLONE, AL SIEGEL, BW DANIELSON, PE SUTCLIFFE, JG ERLANDER, MG AF LOVENBERG, TW BARON, BM DELECEA, L MILLER, JD PROSSER, RA REA, MA FOYE, PE RACKE, M SLONE, AL SIEGEL, BW DANIELSON, PE SUTCLIFFE, JG ERLANDER, MG TI A NOVEL ADENYLYL CYCLASE-ACTIVATING SEROTONIN RECEPTOR (5-HT7) IMPLICATED IN THE REGULATION OF MAMMALIAN CIRCADIAN-RHYTHMS SO NEURON LA English DT Article ID SUPRACHIASMATIC NUCLEI INVITRO; MESSENGER-RNA; FUNCTIONAL EXPRESSION; MOLECULAR-CLONING; FIRING RATE; AGONIST; FAMILY; PHASE; GENE; ACID AB We report the cloning and characterization of a novel serotonin receptor, designated as 5-HT7, which is coupled to the stimulation of adenylyl cyclase. 5-HT7 mRNA is expressed discretely throughout the CNS, predominantly in the thalamus and hypothalamus. 5-HT7 has a unique pharmacological profile that redefines agonist and antagonist classification of ligands previously thought to be ''selective.'' The circadian phase of spontaneous neuronal activity of the rat suprachiasmatic nucleus of the hypothalamus advances in response to serotonin ligands with a pharmacological profile consistent exclusively with that of 5-HT7. These findings suggest a physiological role in the regulation of circadian rhythms for one subtype of serotonin receptor, 5-HT7, and provide a pharmacological test to evaluate its role in other neuronal systems. C1 MARION MERRELL DOW RES INST, CINCINNATI, OH 45215 USA. STANFORD UNIV, MED CTR, SCH MED, CTR SLEEP & CIRCADIAN NEUROBIOL, STANFORD, CA 94305 USA. ARMSTRONG LAB, CIRCADIAN NEUROBIOL RES GRP, BROOKS AFB, TX 78235 USA. RP LOVENBERG, TW (reprint author), Scripps Res Inst, RES INST, DEPT MOLEC BIOL, LA JOLLA, CA 92037 USA. RI de Lecea, Luis/B-3171-2009 OI de Lecea, Luis/0000-0002-8921-5942 FU NINDS NIH HHS [NS08905, R01 NS22347] NR 52 TC 576 Z9 583 U1 1 U2 6 PU CELL PRESS PI CAMBRIDGE PA 1050 MASSACHUSETTES AVE, CIRCULATION DEPT, CAMBRIDGE, MA 02138 SN 0896-6273 J9 NEURON JI Neuron PD SEP PY 1993 VL 11 IS 3 BP 449 EP 458 DI 10.1016/0896-6273(93)90149-L PG 10 WC Neurosciences SC Neurosciences & Neurology GA LY498 UT WOS:A1993LY49800005 PM 8398139 ER PT J AU HAGGE, MS RECTOR, TM AF HAGGE, MS RECTOR, TM TI REVIEW OF PERIODONTAL CONSIDERATIONS AND SURGICAL RETRACTION TECHNIQUES FOR OPERATIVE DENTISTRY SO OPERATIVE DENTISTRY LA English DT Review AB Gingival margins of restorations should generally be placed supragingivally or at the gingival crest; however, some valid parameters exist for the extension of margins into the gingival crevice. The successful restoration of teeth in subgingival locations requires familiarity with periodontal anatomy. This paper reviews periodontal considerations, then presents several surgical techniques that facilitate access and Improve the periodontal prognosis of teeth that have been compromised through fracture, caries, prior restorative treatment, or habit. RP HAGGE, MS (reprint author), MGD,MED GRP,LANGLEY AFB,VA 23665, USA. NR 0 TC 0 Z9 1 U1 2 U2 2 PU UNIV WASHINGTON PI SEATTLE PA SCHOOL DENTISTRY SM-57, SEATTLE, WA 98195 SN 0361-7734 J9 OPER DENT JI Oper. Dent. PD SEP-OCT PY 1993 VL 18 IS 5 BP 179 EP 186 PG 8 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LY951 UT WOS:A1993LY95100004 PM 8152987 ER PT J AU ALRAJHI, AA HIDAYAT, A NASR, A ALFARAN, M AF ALRAJHI, AA HIDAYAT, A NASR, A ALFARAN, M TI THE HISTOPATHOLOGY AND THE MECHANISM OF ENTROPION IN PATIENTS WITH TRACHOMA SO OPHTHALMOLOGY LA English DT Article ID CICATRICIAL ENTROPION; COMPLICATIONS; LEPROSY AB Background. Eyelids of patients with trachoma may be thickened. This thickening could be attributed to trachomatous changes in the conjunctiva and tarsus. Methods: Biopsies of tarsal plates and palpebral conjunctivae were obtained from 17 upper eyelids of 11 patients with inactive trachoma who underwent posterior tarsotomy procedures for entropion repair. Results: Light microscopy studies showed a thick and compact subepithelial fibrous membrane adherent to the tarsal plate. This membrane caused apparent thickening of the tarsus when measured intraoperatively (range, 1.25-2.00 mm). Other histopathologic findings include atrophy of the meibomian glands with thickening of the acinar basement membrane, loss of goblet cells, retention cysts, and hyaline degeneration of the tarsal plate with focal replacement by adipose tissue. Conclusion: The contraction of the subepithelial fibrous membrane formed by vertically oriented parallel collagen fibers is one of the main factors contributing to the entropion formation. C1 USAF,INST PATHOL,DEPT OPHTHALMOL PATHOL,WASHINGTON,DC 20330. RP ALRAJHI, AA (reprint author), KING KHALID EYE SPECIALIST HOSP,MED LIB,POB 7191,RIYADH 11462,SAUDI ARABIA. NR 20 TC 26 Z9 26 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0161-6420 J9 OPHTHALMOLOGY JI Ophthalmology PD SEP PY 1993 VL 100 IS 9 BP 1293 EP 1296 PG 4 WC Ophthalmology SC Ophthalmology GA LX192 UT WOS:A1993LX19200010 PM 8371914 ER PT J AU WICKERN, GM AF WICKERN, GM TI PEDIATRIC ALLERGIC FUNGAL SINUSITIS - ANOTHER GREAT MASQUERADER SO PEDIATRIC ASTHMA ALLERGY & IMMUNOLOGY LA English DT Article AB Allergic fungal sinusitis (AFS) was first recognized as a distinct clinical entity in 1981. Since that time more than 70 case reports have been published. Nearly half of these cases are children under the age of 20 years. These children are immunocompetent with recalcitrant sinusitis, nasal polyposis, allergic rhinitis, and asthma. They may have epiphora, telecanthus, diplopia, and orbital proptosis. Computerized tomography (CT) scans demonstrate multisinus involvement with tumor-like expansion changes occurring frequently. They often have very elevated total serum immunoglobulin E (IgE) levels with increased specific fungal IgE and IgG levels and cutaneous hypersensitivity to the implicated fungus. The peanut butter-like mucin in their sinuses has characteristic findings both grossly and microscopically. Fungal elements are detectable within the mucin both microscopically and with culture. No evidence of fungal mucosal invasion should exist. Optimal treatment is uncertain although surgical debridement and postoperative systemic steroids are most commonly employed. Recurrence of disease is common with much still to be learned about this interesting disorder. RP WICKERN, GM (reprint author), WHMC PSMA,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 0883-1874 J9 PEDIATR ASTHMA ALLER JI Pediatr. Asthma Allergy Immunol. PD FAL PY 1993 VL 7 IS 3 BP 147 EP 156 DI 10.1089/pai.1993.7.147 PG 10 WC Allergy; Immunology; Pediatrics; Respiratory System SC Allergy; Immunology; Pediatrics; Respiratory System GA MK544 UT WOS:A1993MK54400001 ER PT J AU WILLIAMS, WJ AF WILLIAMS, WJ TI AMERICAN STEEL AND JAPANESE SHIPS - TRANSPACIFIC TRADE DISPUTES DURING WORLD-WAR-I SO PROLOGUE-QUARTERLY OF THE NATIONAL ARCHIVES LA English DT Article RP WILLIAMS, WJ (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 52 TC 0 Z9 0 U1 0 U2 0 PU NATL ARCHIVES TRUST FUND BOARD PI WASHINGTON PA WASHINGTON, DC 20408 SN 0033-1031 J9 PROLOGUE JI Prologue-Q. Natl. Archives PD FAL PY 1993 VL 25 IS 3 BP 248 EP 257 PG 10 WC History SC History GA LV020 UT WOS:A1993LV02000004 ER PT J AU MCMANIS, SE BROWN, GR ZACHARY, R RUNDELL, JR AF MCMANIS, SE BROWN, GR ZACHARY, R RUNDELL, JR TI A SCREENING-TEST FOR SUBTLE COGNITIVE IMPAIRMENT EARLY IN THE COURSE OF HIV-INFECTION SO PSYCHOSOMATICS LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; MULTICENTER AIDS COHORT; ASYMPTOMATIC INDIVIDUALS; NERVOUS-SYSTEM; INVOLVEMENT; PREVALENCE; DEMENTIA; COMPLEX AB The authors report on the use of the Rey-Osterrieth Complex Figure Copy (ROC) and Memory (ROM) test as a bedside screening measure of cognitive impairment in 67 HIV-seropositive persons (43 men, 24 women). HIV-seropositive individuals scored significantly worse than 49 HIV-seronegative matched individuals (33 men, 16 women) in the control group on the ROC (P = 0.045, effect size = 0.39), but not on the ROM test. The scores did not correlate with stage of HIV infection, CD4a cell counts, cerebrospinal fluid parameters, or measures of affective state. No gender effects on performance were noted. It is concluded that while cognitive deficits may occur early in asymptomatic HIV disease, the ROC/ROM test as the authors used it is not a useful screening tool for clinicians. The study also suggests that the growing number of HIV-positive women should be included in neuropsychological studies of early HIV disease. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. WALTER REED ARMY INST RES,TRISERV HIV RES PROGRAM,WASHINGTON,DC 20307. NR 44 TC 4 Z9 4 U1 0 U2 0 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0033-3182 J9 PSYCHOSOMATICS JI Psychosomatics PD SEP-OCT PY 1993 VL 34 IS 5 BP 424 EP 431 PG 8 WC Psychiatry; Psychology SC Psychiatry; Psychology GA LU809 UT WOS:A1993LU80900007 PM 8140192 ER PT J AU NELSON, AG WOLF, EG BRADSHAW, PO HEARON, CM LI, B AF NELSON, AG WOLF, EG BRADSHAW, PO HEARON, CM LI, B TI SKELETAL-MUSCLE METABOLIC ENZYMES ARE ALTERED BY HYPERBARIC OXYGENATION TREATMENTS SO UNDERSEA & HYPERBARIC MEDICINE LA English DT Article DE CITRATE SYNTHASE; ALPHA-GLYCEROPHOSPHATE DEHYDROGENASE; ADENYLATE KINASE ID EXERCISE; ADAPTATION AB To test whether repeated HBO exposures would increase activity of skeletal muscle metabolic enzymes, 27 rabbits (3 groups) were exposed 90 min/day, 5 days/wk to either 100% O2 at 243 kPa (HBO), 100% O2 at 101 kPa (HIO), or 21% O2 at 101 kPa (CON). Four animals per group were killed after 2 wk of treatment, and the remaining five per group were killed after 8 wk of treatment. Soleus, plantaris, and tibialis anterior muscles were removed, and the activities of adenylate kinase, alpha-glycerophosphate dehydrogenase, and citrate synthase were measured. After 8 wk there was no difference in enzyme activity between groups for either plantaris or tibialis anterior. In the soleus after 8 wk there was no difference between groups in adenylate kinase activity, but alpha-glycerophosphate dehydrogenase activity was 56% greater (P < 0.05) in HBO than in HIO and 50% greater than in CON, and citrate synthase activity in HBO was 24% greater (P < 0.05) than that in HIO and 36% greater than that in CON. Inasmuch as the soleus is a postural muscle, these results suggest that long-term HBO treatments can increase enzyme activity in an actively contracting muscle. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. RP NELSON, AG (reprint author), LOUISIANA STATE UNIV,DEPT KINESIOL,112 LONG FIELD HOUSE,BATON ROUGE,LA 70803, USA. NR 21 TC 4 Z9 4 U1 1 U2 1 PU UNDERSEA & HYPERBARIC MEDICAL SOC INC PI KENSINGTON PA 10531 METROPOLITAN AVE, KENSINGTON, MD 20895 SN 1066-2936 J9 UNDERSEA HYPERBAR M JI Undersea Hyperb. Med. PD SEP PY 1993 VL 20 IS 3 BP 189 EP 196 PG 8 WC Marine & Freshwater Biology; Medicine, Research & Experimental SC Marine & Freshwater Biology; Research & Experimental Medicine GA LW055 UT WOS:A1993LW05500001 PM 8401148 ER PT J AU SABANEGH, E HARRIS, MJ GRIDER, D AF SABANEGH, E HARRIS, MJ GRIDER, D TI CAVERNOUS ADRENAL HEMANGIOMA SO UROLOGY LA English DT Note ID GLAND AB Cavernous hemangiomas are unusual tumors with a propensity for skin and liver involvement and rarely involving genitourinary organs. We report an unusual case of adrenal hemangioma which was successfully treated surgically. In addition, we review the salient clinical, radiographic, and pathologic features of this disease. C1 WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. NR 10 TC 18 Z9 18 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0090-4295 J9 UROLOGY JI UROLOGY PD SEP PY 1993 VL 42 IS 3 BP 327 EP 330 DI 10.1016/0090-4295(93)90626-L PG 4 WC Urology & Nephrology SC Urology & Nephrology GA LX672 UT WOS:A1993LX67200018 PM 8379036 ER PT J AU LOOK, DC AF LOOK, DC TI MOLECULAR-BEAM EPITAXIAL GAAS GROWN AT LOW-TEMPERATURES SO THIN SOLID FILMS LA English DT Article ID LOW SUBSTRATE TEMPERATURES; SI-DOPED GAAS; ELECTRON-PARAMAGNETIC-RESONANCE; MIGRATION-ENHANCED EPITAXY; BREAKDOWN-VOLTAGE; GALLIUM-ARSENIDE; QUANTUM-WELLS; FERMI LEVEL; LAYERS; MBE AB Molecular beam epitaxy (MBE) GaAs layers grown at substrate temperatures of 200-400-degrees-C, well under the normal growth temperature of about 600-degrees-C, exhibit unique electrical and optical properties and can be profitably used as buffer layers for metal-semiconductor field effect transistors (FETs), gate-insulator layers for metal-insulator-semiconductor FETs, and channel layers in fast photoconductive switches. Other III-V materials, such as InP, GaP, AlGaAs, InAlAs, InGaAs, and InGaP, have also been grown at low temperatures (LTs) and are, in some cases, useful in device applications. The most outstanding features of LT MBE GaAs are very high point-defect densities, e.g. about 10(20) As(Ga) centers cm-3 in 200-degrees-C material, and high concentrations (about 10(17) cm-3) of large (about 30 angstrom diameter) As precipitates after annealing such material for 10 min at 600-degrees-C. However, there is still much speculation and controversy regarding the relative roles of the point defects and precipitates in determining the optical and electrical characteristics of LT GaAs. Topics discussed here include growth, structural properties, point defects, annealing properties, As precipitates, and devices. C1 ELR,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 93 TC 161 Z9 162 U1 4 U2 30 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD AUG 25 PY 1993 VL 231 IS 1-2 BP 61 EP 73 DI 10.1016/0040-6090(93)90703-R PG 13 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA LW761 UT WOS:A1993LW76100005 ER PT J AU CHEN, GJ CHEN, LS EAPEN, KC WARD, WE AF CHEN, GJ CHEN, LS EAPEN, KC WARD, WE TI CROSS-COUPLING REACTIONS OF PERFLUOROALKYL AND PERFLUOROOXAALKYL IODIDES WITH CHLOROHETEROCYCLIC COMPOUNDS IN THE PRESENCE OF COPPER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 16 EP FLUO PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP321 UT WOS:A1993LP32101519 ER PT J AU TROHALAKI, S DUDIS, DS YEATES, AT AF TROHALAKI, S DUDIS, DS YEATES, AT TI MODELING HYDROGEN-BOND ENERGIES IN PSEUDOLADDER PBX BASED POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 26 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP321 UT WOS:A1993LP32101280 ER PT J AU BATSCHELET, WH AF BATSCHELET, WH TI QUINTANA ROAD, AN ENVIRONMENTAL SUCCESS STORY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CHEM SCI LAB,KELLY AFB,TX 78241. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 30 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP321 UT WOS:A1993LP32101398 ER PT J AU NATARAJAN, LV MYERS, K COOPER, TM EPLING, B TOKARSKI, Z AF NATARAJAN, LV MYERS, K COOPER, TM EPLING, B TOKARSKI, Z TI SYNTHESIS, CHARACTERIZATION, AND NONLINEAR-OPTICAL RESPONSE OF POLY(P-NITROBENZYL-L-GLUTAMATE) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SCI APPLICAT INT CORP,DAYTON,OH 45431. WRIGHT STATE UNIV,DEPT CHEM,DAYTON,OH 45432. USAF,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 40 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP322 UT WOS:A1993LP32201052 ER PT J AU DOTRONG, M DOTRONG, MH EVERS, RC AF DOTRONG, M DOTRONG, MH EVERS, RC TI MULTIDIMENSIONAL BENZOBISOXAZOLE RIGID-ROD POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 61 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP322 UT WOS:A1993LP32201073 ER PT J AU SMITH, PJ AF SMITH, PJ TI THE BEGINNINGS OF THE HIGH-SCHOOL CHEMISTRY COMMITTEE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,AIR ACAD HIGH SCH,DEPT SCI,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 151 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP321 UT WOS:A1993LP32100777 ER PT J AU CARRAHER, C TAYLOR, A MEDINA, F LINVILLE, R RANDOLPH, E KLOSS, J STEVISON, D AF CARRAHER, C TAYLOR, A MEDINA, F LINVILLE, R RANDOLPH, E KLOSS, J STEVISON, D TI AFFECT OF POLYDYES ON THE STABILITY OF POLYMERIC FILMS AND OTHER POLYMERIC MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 FLORIDA ATLANTIC UNIV,DEPT CHEM,BOCA RATON,FL 33431. USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 218 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP322 UT WOS:A1993LP32201230 ER PT J AU CURLISS, DB AF CURLISS, DB TI N-15 NMR INVESTIGATION OF THE HYDROLYSIS OF BISMALEIMIDE POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. PURDUE UNIV,DEPT CHEM ENGN,W LAFAYETTE,IN 47907. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 1993 VL 206 BP 339 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA LP322 UT WOS:A1993LP32201351 ER PT J AU MOSTELLER, DL ANDREWS, ML CLARK, JD GARSCADDEN, A AF MOSTELLER, DL ANDREWS, ML CLARK, JD GARSCADDEN, A TI ELECTRON-DRIFT VELOCITIES IN ARGON-BORON TRICHLORIDE GAS-MIXTURES SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID TRANSFER CROSS-SECTION; BCL3; ATTACHMENT AB Electron drift velocities were measured for argon gas mixtures containing 25 ppm to 0.5% boron trichloride additive using a pulsed-Townsend drift tube. These results show a marked sensitivity to mixture ratio and the gas mixtures also show negative differential conductivity and strong attachment at low electric field/gas number density. C1 WRIGHT LAB,PLASMA RES GRP,WRIGHT PATTERSON AFB,OH 45433. RP MOSTELLER, DL (reprint author), WRIGHT STATE UNIV,DAYTON,OH 45435, USA. NR 18 TC 12 Z9 12 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1993 VL 74 IS 4 BP 2247 EP 2249 DI 10.1063/1.354707 PG 3 WC Physics, Applied SC Physics GA LT183 UT WOS:A1993LT18300015 ER PT J AU TEDESCO, JW ROSS, CA KUENNEN, ST AF TEDESCO, JW ROSS, CA KUENNEN, ST TI STRAIN-RATE EFFECTS ON THE COMPRESSIVE STRENGTH OF SHOCK-MITIGATING FOAMS SO JOURNAL OF SOUND AND VIBRATION LA English DT Letter C1 USAF, HEADQUARTERS ENGN & SERV, ENGN & SERV LAB, AIR BASE STRUCT MAT BRANCH, TYNDALL AFB, FL 32403 USA. RP TEDESCO, JW (reprint author), AUBURN UNIV, DEPT CIVIL ENGN, AUBURN, AL 36849 USA. NR 13 TC 13 Z9 15 U1 0 U2 1 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-460X EI 1095-8568 J9 J SOUND VIB JI J. Sound Vibr. PD AUG 8 PY 1993 VL 165 IS 2 BP 376 EP 384 DI 10.1006/jsvi.1993.1265 PG 9 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA LV603 UT WOS:A1993LV60300013 ER PT J AU KIM, A GARRETT, LV BOSNYAK, CP CHUDNOVSKY, A AF KIM, A GARRETT, LV BOSNYAK, CP CHUDNOVSKY, A TI MODELING THE PROCESS-ZONE KINETICS OF POLYCARBONATE SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article AB A thermodynamic model for the equilibrial process zone ahead of a crack in polycarbonate is developed from the recently proposed Chudnovsky model and experimental characterization of the process zone. Based on the model, the force for evolution of the process zone is proposed from the consideration of irreversible thermodynamics and chemical reaction theories. The experimental data reported in our previous paper are well described by the equilibrial process zone model and a new kinetic equation. (C) 1993 John Wiley & Sons, Inc. C1 DOW CHEM CO USA,POLYCARBONATE RES & DEV,FREEPORT,TX 77541. WRIGHT LAB,AIRCREW ENCLOSURE GRP WL-FIVR,WRIGHT PATTERSON AFB,OH 45433. RP KIM, A (reprint author), UNIV ILLINOIS,DEPT CIVIL ENGN MECH & MET M-C246,POB 4348,CHICAGO,IL 60680, USA. NR 12 TC 5 Z9 5 U1 0 U2 1 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 AUG 5 PY 1993 VL 49 IS 5 BP 877 EP 883 DI 10.1002/app.1993.070490513 PG 7 WC Polymer Science SC Polymer Science GA LM066 UT WOS:A1993LM06600013 ER PT J AU KIM, A GARRETT, LV BOSNYAK, CP CHUDNOVSKY, A AF KIM, A GARRETT, LV BOSNYAK, CP CHUDNOVSKY, A TI KINETICS AND CHARACTERIZATION OF THE PROCESS-ZONE EVOLUTION IN POLYCARBONATE SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article ID PROPAGATION; DEFORMATION AB The process-zone evolution strongly influences the crack growth of polycarbonate. A methodology for determination of the kinetics of the process-zone evolution by decoupling these two processes was developed. This was achieved using constant displacement (stress-relaxation) conditions under which the crack length remained constant. The morphology of the process zone was characterized using optical microscopy of cross sections and fracture surfaces produced with liquid nitrogen. The kinetics of process-zone evolution and stress relaxation were monitored and analyzed. The kinetics vary significantly with the level of displacement imposed. Thus, the challenge remains to construct a master curve for the kinetics. (C) 1993 John Wiley & Sons, Inc. C1 DOW CHEM CO USA,POLYCARBONATE RES & DEV,FREEPORT,TX 77541. WRIGHT LAB,AIRCREW ENCLOSURE GRP WL-FIVR,WRIGHT PATTERSON AFB,OH 45433. UNIV ILLINOIS,DEPT CIVIL ENGN MECH & MET M-C246,POB 4348,CHICAGO,IL 60680. NR 9 TC 6 Z9 6 U1 1 U2 1 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 AUG 5 PY 1993 VL 49 IS 5 BP 885 EP 892 DI 10.1002/app.1993.070490514 PG 8 WC Polymer Science SC Polymer Science GA LM066 UT WOS:A1993LM06600014 ER PT J AU SMITH, DK AF SMITH, DK TI VOLAR CARPAL LIGAMENTS OF THE WRIST - NORMAL APPEARANCE ON MULTIPLANAR RECONSTRUCTIONS OF 3-DIMENSIONAL FOURIER-TRANSFORM MR-IMAGING SO AMERICAN JOURNAL OF ROENTGENOLOGY LA English DT Article ID ANATOMY AB OBJECTIVE. Three-dimensional Fourier transform MR imaging techniques can produce much thinner contiguous slices than are obtainable with standard two-dimensional Fourier transform MR imaging techniques. The improved spatial resolution and capabilities for interactive multiplanar displays allow better visualization of small, complex anatomic structures, such as the carpal ligaments. The purposes of this study were twofold: (1) to determine if the volar carpal ligaments can be consistently visualized when using three-dimensional Fourier transform MR imaging techniques with multiplanar reconstructions and (2) to evaluate the size, shape, orientation, and right-to-left symmetry of the volar carpal ligaments in both wrists of 25 asymptomatic volunteers as a basis for future comparison when patients with suspected ligament injuries are seen. SUBJECTS AND METHODS. Both wrists of 25 asymptomatic volunteers were imaged with a three-dimensional Fourier transform MR imaging technique with commercially available equipment. A three-dimensional graphic workstation was used to reconstruct oblique two-dimensional images in the long axes of the major volar carpal ligaments. The size, shape, orientation, and right-to-left symmetry of the ligaments were determined from the reconstructed two-dimensional images. RESULTS. Six of the eight volar ligaments were visualized in more than 95% of the 50 wrists: the radioscaphocapitate, radiolunotriquetral, radiolunate, ulnolunate, ulnotriquetral, and triquetroscaphoid ligaments. The radioscaphoid and radioscapholunate ligaments were less well defined and were recognizable as ligaments in only 66% and 26% of wrists, respectively. CONCLUSION. The major volar carpal ligaments can be visualized consistently with three-dimensional Fourier transform MR imaging techniques and multiplanar reconstructions. The volar carpal ligaments are usually symmetric between the right and left sides; therefore, MR images of a patient's injured wrist can be compared with MR images of the contralateral wrist. The size and shape of the volar carpal ligaments shown in this article can be used as a basis for comparison when patients with suspected ligamentous injuries are examined. This information will be useful for detecting ligamentous injuries on MR images. RP SMITH, DK (reprint author), WILFORD HALL USAF MED CTR,DEPT DIAGNOST RADIOL,SUITE 1,SGHRD,2200 BERQUIST DR,LACKLAND AFB,TX 78236, USA. NR 17 TC 40 Z9 40 U1 0 U2 0 PU AMER ROENTGEN RAY SOC PI RESTON PA 1891 PRESTON WHITE DR, SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 SN 0361-803X J9 AM J ROENTGENOL JI Am. J. Roentgenol. PD AUG PY 1993 VL 161 IS 2 BP 353 EP 357 PG 5 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA LW472 UT WOS:A1993LW47200027 PM 8333377 ER PT J AU BLATT, SP HENDRIX, CW BUTZIN, CA FREEMAN, TM WARD, WW HENSLEY, RE MELCHER, GP DONOVAN, DJ BOSWELL, RN AF BLATT, SP HENDRIX, CW BUTZIN, CA FREEMAN, TM WARD, WW HENSLEY, RE MELCHER, GP DONOVAN, DJ BOSWELL, RN TI DELAYED-TYPE HYPERSENSITIVITY SKIN TESTING PREDICTS PROGRESSION TO AIDS IN HIV-INFECTED PATIENTS SO ANNALS OF INTERNAL MEDICINE LA English DT Article DE HUMAN IMMUNODEFICIENCY VIRUS INFECTIONS; ACQUIRED IMMUNODEFICIENCY SYNDROME; HYPERSENSITIVITY, DELAYED; SKIN TESTS; IMMUNITY, CELLULAR ID HUMAN-IMMUNODEFICIENCY-VIRUS; CELL-MEDIATED-IMMUNITY; PNEUMOCYSTIS-CARINII PNEUMONIA; ACQUIRED-IMMUNODEFICIENCY; HOMOSEXUAL MEN; T-HELPER; BETA-2-MICROGLOBULIN LEVEL; CUTANEOUS HYPERSENSITIVITY; LYMPHOCYTE COUNT; KAPOSIS SARCOMA AB Objective: To evaluate the prognostic significance of cutaneous delayed-type hypersensitivity (DTH) skin testing in persons infected with HIV. Design: Cohort study. Setting: United States Air Force (USAF) Medical Center. Patients: Consecutive sample of 889 HIV-infected USAF personnel or dependents undergoing their first staging evaluation from 1985 through August 1990 in the USAF HIV Natural History Study. Measurements: All patients were evaluated with DTH skin testing including purified protein derivative and four control skin test antigens: mumps, candida, tetanus toxoid, and trichophyton. In addition, all patients underwent CD4+ T-cell surface marker determinations. The relation between DTH skin test response at first evaluation and progression to Walter Reed stage 6 (presence of an AIDS-defining opportunistic infection) was evaluated using Kaplan-Meier survival analysis. Results: Patients with more than 400 CD4+ T cells/mm3 are more likely than those having fewer than 400 CD4+ T cells per mm3 to respond to at least one (94% compared with 67%, P < 0.001) or at least two (86% compared with 45%, P < 0.001) DTH skin tests. Mean CD4 counts are lower for anergic compared with nonanergic patients and for patients responding to a single control skin test compared with those responding to two or more skin tests (P < 0.05). The DTH skin test response at first evaluation was also found to predict progression to AIDS; the relative risk at 5 years of follow-up was 2.5 (95% CI, 1.2 to 5.2) for anergy compared with a single positive skin test and 3.0 (CI, 1.4 to 6.2) for a single compared with two or more skin test responses. The DTH skin test response at first evaluation was a predictor of progression (P < 0.001) when controlling for initial CD4 count and Walter Reed stage in a Cox proportional hazards regression analysis. Conclusions: The DTH skin test response, a functional measure of cellular immunity, is an independent predictor of progression to AIDS in persons with HIV. C1 MIL MED CONSORTIUM APPL RETROVIRAL RES & CLIN INVESTIGAT DIRECTORATE,SAN ANTONIO,TX. RP BLATT, SP (reprint author), WILFORD HALL USAF MED CTR,CTR AIDS RES,SW FDN BIOMED RES,PSMI-H,2200 BERGQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 39 TC 116 Z9 116 U1 0 U2 0 PU AMER COLL PHYSICIANS PI PHILADELPHIA PA INDEPENDENCE MALL WEST 6TH AND RACE ST, PHILADELPHIA, PA 19106-1572 SN 0003-4819 J9 ANN INTERN MED JI Ann. Intern. Med. PD AUG 1 PY 1993 VL 119 IS 3 BP 177 EP 184 PG 8 WC Medicine, General & Internal SC General & Internal Medicine GA LU903 UT WOS:A1993LU90300001 PM 8100691 ER PT J AU NISHINO, SF SPAIN, JC AF NISHINO, SF SPAIN, JC TI DEGRADATION OF NITROBENZENE BY A PSEUDOMONAS-PSEUDOALCALIGENES SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID BIODEGRADATION; NITROPHENOL; BACTERIA; PATHWAY; PUTIDA; ACID AB A Pseudomonas pseudoalcaligenes able to use nitrobenzene as the sole source of carbon, nitrogen, and energy was isolated from soil and groundwater contaminated with nitrobenzene. The range of aromatic substrates able to support growth was limited to nitrobenzene, hydroxylaminobenzene, and 2-aminophenol. Washed suspensions of nitrobenzene-grown cells removed nitrobenzene from culture fluids with the concomitant release of ammonia. Nitrobenzene, nitrosobenzene, hydroxylaminobenzene, and 2-aminophenol stimulated oxygen uptake in resting cells and in extracts of nitrobenzene-grown cells. Under aerobic and anaerobic conditions, crude extracts converted nitrobenzene to 2-aminophenol with oxidation of 2 mol of NADPH. Ring cleavage, which required ferrous iron, produced a transient yellow product with a maximum A380. In the presence of NAD, the product disappeared and NADH was produced. In the absence of NAD, the ring fission product was spontaneously converted to picolinic acid, which was not further metabolized. These results indicate that the catabolic pathway involves the reduction of nitrobenzene to nitrosobenzene and then to hydroxylaminobenzene; each of these steps requires 1 mol of NADPH. An enzyme-mediated Bamberger-like rearrangement converts hydroxylaminobenzene to 2-aminophenol, which then undergoes meta ring cleavage to 2-aminomuconic semialdehyde. The mechanism for release of ammonia and subsequent metabolism are under investigation. C1 ALEQ OL,SUITE 2,139 BARNES DR,TYNDALL AFB,FL 32403. NR 39 TC 174 Z9 203 U1 1 U2 20 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD AUG PY 1993 VL 59 IS 8 BP 2520 EP 2525 PG 6 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA LP835 UT WOS:A1993LP83500026 PM 8368838 ER PT J AU MCKENZIE, I GILLINGHAM, KK AF MCKENZIE, I GILLINGHAM, KK TI INCIDENCE OF CARDIAC DYSRHYTHMIAS OCCURRING DURING CENTRIFUGE TRAINING SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID ACCELERATION AB High-G training has been reported to provoke dysrhythmias in many subjects. These reports have been based on small subject groups. Students attending aeromedical professional courses at the USAF School of Aerospace Medicine are offered the opportunity to participate in high-G centrifuge training on the Armstrong Laboratory centrifuge, during which ECG monitoring is routinely performed. This study documents the incidence of dysrhythmias in this large group of subjects. The pertinent information from the records of 1,180 training sessions from 1984-91 were transcribed to a database on a personal computer. Dysrhythmias were recorded in 552 (47%) of the training sessions. Ventricular ectopy occurred in 480 (41%) of the sessions, and supraventricular dysrhythmias appeared in 127 (11%). In 53 (4.5%) of the sessions, training either was or would have been terminated because of the dysrhythmia. Session-terminating dysrhythmias included: 26 ventricular tachycardias (2.2%), including 18 triplets (1.5%); 9 ventricular couplets (0.8%); 8 episodes of too-frequent ventricular premature beats (0.7%); 4 of supraventricular tachycardia (0.3%), including 2 with aberrant conduction (0.2%); 2 of aberrantly conducted beats (0.2%); and 4 of anomalous bradycardia (0.3%). Centrifuge training can provoke serious dysrhythmics in ostensibly healthy individuals, and ECG monitoring of aircrew undergoing such training is recommended for their safety. Because some of these dysrhythmias are disqualifying for aircrew duties, the need for a more lenient aeromedical disposition policy must be considered. RP MCKENZIE, I (reprint author), ARMSTRONG LAB,CFTF,BROOKS AFB,TX 78235, USA. NR 8 TC 14 Z9 14 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD AUG PY 1993 VL 64 IS 8 BP 687 EP 691 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LP566 UT WOS:A1993LP56600001 PM 8368980 ER PT J AU HARTUNG, GH KROCK, LP CRANDALL, CG BISSON, RU MYHRE, LG AF HARTUNG, GH KROCK, LP CRANDALL, CG BISSON, RU MYHRE, LG TI PREDICTION OF MAXIMAL OXYGEN-UPTAKE FROM SUBMAXIMAL EXERCISE TESTING IN AEROBICALLY FIT AND NONFIT MEN SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID VO2MAX AB Aerobic physical fitness, as determined by the body's maximal capacity to utilize oxygen (Vo2max) during demanding work, is an important determinant of a person's ability to perform many military tasks. The present 2.4 km (1.5 mi) run has not proven itself capable of accurately estimating this important factor on a periodic basis. This paper reviews prior studies of heart rate response to known workloads on a cycle ergometer to estimate VO2max. This submaximal test, as revised by scientists at the USAF Armstrong Laboratory at Brooks AFB, TX, was validated on 22 male subjects by comparing the test results with laboratory measurements of VO2max obtained by analysis of expired air during maximal treadmill exercise. Two groups of subjects were selected; one consisting at highly trained runners and the other of inactive subjects who did not perform regular aerobic exercise. The cycle ergometry prediction underestimated measured VO2max by 8.1 ml.kg-1.min-1 (SEE = 4.25) in all subjects, but there was a correlation of 0.95 between the estimated and measured values. Both estimated and measured VO2max were significantly higher in the group of trained runners than in the inactive subjects. C1 ARMSTRONG LAB,DIV CREW TECHNOL,BROOKS AFB,TX 78235. UNIV HAWAII MANOA,DEPT PHYSIOL,HONOLULU,HI 96822. NR 32 TC 18 Z9 18 U1 2 U2 14 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD AUG PY 1993 VL 64 IS 8 BP 735 EP 740 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LP566 UT WOS:A1993LP56600008 PM 8368987 ER PT J AU STANCOMBE, BB WALSH, WF DERDAK, S DIXON, P HENSLEY, D AF STANCOMBE, BB WALSH, WF DERDAK, S DIXON, P HENSLEY, D TI INDUCTION OF HUMAN NEONATAL PULMONARY FIBROBLAST CYTOKINES BY HYPEROXIA AND UREAPLASMA-UREALYTICUM SO CLINICAL INFECTIOUS DISEASES LA English DT Article; Proceedings Paper CT INTERNATIONAL SYMP ON THE CHANGING ROLE OF MYCOPLASMAS IN RESPIRATORY DISEASE AND AIDS CY NOV 30-DEC 05, 1991 CL SCOTTSDALE, AZ ID CHRONIC LUNG-DISEASE; BIRTH-WEIGHT INFANTS; BRONCHOPULMONARY DYSPLASIA; PNEUMONIA AB Multiple insults may induce bronchopulmonary dysplasia (BPD) in premature infants, including the recently reported association of BPD with neonatal Ureaplasma urealyticum colonization. One mechanism of damage could involve stimulation of proinflammatory cytokine release from pulmonary fibroblasts. We therefore compared the effects of U. urealyticum, oxygen, and lipopolysaccharide (LPS) on the release of interleukin (IL)-1beta, IL-6, and IL-8 from neonatal fibroblasts. Fibroblasts were grown in multiwell plates and divided into the following experimental conditions: fibroblasts alone, fibroblasts plus U. urealyticum (10,000 cfu/mL), and fibroblasts, plus LPS (2 mug/mL). Plates were then exposed to room air or hyperoxia for 48 h, and supernatants were assayed for IL. U. urealyticum-infected fibroblasts produced a significant increase in IL-6 (P < .05) and a dramatic increase in IL-8 (P < .05) that was independent of hyperoxic exposure and significantly increased over that produced by LPS or hyperoxia alone. U. urealyticum is a potent inducer of fibroblast cytokine release in vitro and may contribute to the development of BPD. C1 WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. RP STANCOMBE, BB (reprint author), WILFORD HALL USAF MED CTR,DEPT PEDIAT,KMC S6HMC,LACKLAND AFB,TX 78236, USA. NR 19 TC 25 Z9 26 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD AUG PY 1993 VL 17 SU 1 BP S154 EP S157 PG 4 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA LQ130 UT WOS:A1993LQ13000024 PM 8399907 ER PT J AU WALSH, WF BUTLER, J COALSON, J HENSLEY, D CASSELL, GH DELEMOS, RA AF WALSH, WF BUTLER, J COALSON, J HENSLEY, D CASSELL, GH DELEMOS, RA TI A PRIMATE MODEL OF UREAPLASMA-UREALYTICUM INFECTION IN THE PREMATURE-INFANT WITH HYALINE-MEMBRANE DISEASE SO CLINICAL INFECTIOUS DISEASES LA English DT Article; Proceedings Paper CT INTERNATIONAL SYMP ON THE CHANGING ROLE OF MYCOPLASMAS IN RESPIRATORY DISEASE AND AIDS CY NOV 30-DEC 05, 1991 CL SCOTTSDALE, AZ ID CHRONIC LUNG-DISEASE; BIRTH-WEIGHT INFANTS; BRONCHOPULMONARY DYSPLASIA; PNEUMONIA; NEWBORNS AB Cultures positive for Ureaplasma urealyticum in babies weighing <1000 g have been associated with both chronic lung disease (CLD) and death, but no definite causality has been established. To further investigate the role of the organism in CLD, we colonized premature baboons with U. urealyticum and compared resulting pathology with that in uninoculated control animals. Using an established model of prematurity, the 140-day-gestation baboon, three animals were colonized with U. urealyticum via endotracheal tube. All had hyaline membrane disease, indistinguishable from disease in human infants, and U. urealyticum infection. Samples obtained from nasopharynx, trachea, pleural fluid, and, at necropsy, lung tissue produced positive cultures. Culture of blood from one animal yielded U. urealyticum. On pathologic examination, after 6 days of ventilation, all three of the infected animals had the specific pathologic finding of bronchiolitis with epithelial ulceration not seen in four uninfected control animals. Thus, U. urealyticum is capable of causing a pathologically recognizable pulmonary lesion in premature primates with hyaline membrane disease. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. SW FDN BIOMED RES,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DIV NEONATOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,CLIN INVEST FACIL,LACKLAND AFB,TX 78236. UNIV ALABAMA,DEPT MICROBIOL,BIRMINGHAM,AL 35294. NR 18 TC 29 Z9 29 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD AUG PY 1993 VL 17 SU 1 BP S158 EP S162 PG 5 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA LQ130 UT WOS:A1993LQ13000025 PM 8399908 ER PT J AU BECKER, JA ASCHER, DP MENDIOLA, J YODER, B WEISSE, M WAECKER, N HEROMAN, WM DAVIS, C FAJARDO, JE FISCHER, GW AF BECKER, JA ASCHER, DP MENDIOLA, J YODER, B WEISSE, M WAECKER, N HEROMAN, WM DAVIS, C FAJARDO, JE FISCHER, GW TI FALSE-NEGATIVE URINE LATEX PARTICLE AGGLUTINATION TESTING IN NEONATES WITH GROUP-B STREPTOCOCCAL BACTEREMIA - A FUNCTION OF IMPROPER TEST IMPLEMENTATION SO CLINICAL PEDIATRICS LA English DT Article ID RAPID DIAGNOSIS; BODY-FLUIDS; ANTIGEN; INFECTION; ASSAY AB Although blood cultures remain the most specific indicator of Group B streptococcus (GBS) sepsis, a potentially life-threatening infection in neonates, test results may not be available for 24 to 48 hours. Detection of GBS antigen in the urine by latex particle agglutination (LPA) may speed diagnosis. This study analyzed the sensitivity of the GBS urine LPA assay under clinical conditions. The urine of neonates with early-onset GBS bacteremia was analyzed for GBS antigen over a three-year period at six military medical centers. Overall, 53.5% (38/71) of infants with positive blood cultures had a positive urine LPA test. Only one medical center routinely followed manufacturer's recommendations to concentrate urine specimens before testing. These data suggest that the sensitivity for the urine LPA assay, when performed on unconcentrated urine, is lower than previously reported. Clinicians should insist that the laboratory maximize sensitivity by concentrating urine prior to GBS LPA testing. C1 WALTER REED ARMY MED CTR,DEPT PEDIAT,WASHINGTON,DC 20307. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. TRIPLER ARMY MED CTR,OAHU,HI. USN HOSP,SAN DIEGO,CA 92134. USN HOSP,PORTSMOUTH,VA. NR 8 TC 6 Z9 6 U1 0 U2 0 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 AUG PY 1993 VL 32 IS 8 BP 467 EP 471 DI 10.1177/000992289303200805 PG 5 WC Pediatrics SC Pediatrics GA LT005 UT WOS:A1993LT00500005 PM 8403745 ER PT J AU SHANDERA, K SAGO, A ANGSTADT, J PERETSMAN, S JAFFERS, G AF SHANDERA, K SAGO, A ANGSTADT, J PERETSMAN, S JAFFERS, G TI AN ASSESSMENT OF THE NEED FOR THE VOIDING CYSTOURETHROGRAM FOR UROLOGIC SCREENING PRIOR TO RENAL-TRANSPLANTATION SO CLINICAL TRANSPLANTATION LA English DT Article DE RENAL TRANSPLANTATION; UROGRAPHY; (VCUG) AB A retrospective review of the records of 450 patients who were evaluated for renal transplantation was undertaken to determine whether a voiding cystourethrogram (VCUG) influenced the surgical care of the recipient. Three hundred and forty eight of these patients proceeded to transplantation, with 333 of them receiving a VCUG as part of their evaluation. A urologic abnormality was identified by VCUG in 51 individuals, 19 of whom had a known urologic abnormality as the etiology of their renal disease. None of the other 32 patients with abnormalities discovered by VCUG required surgical correction. In the remaining 282 patients the VCUG was normal. The VCUG is not essential for the preparation of potential recipients for renal transplantation and should be utilized selectively in individuals with a history of urologic disease or when urinary tract abnormalities are identified by physical examination or an abnormal urine analysis. C1 WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX. NR 0 TC 6 Z9 6 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0902-0063 J9 CLIN TRANSPLANT JI Clin. Transplant. PD AUG PY 1993 VL 7 IS 4 BP 299 EP 301 PN 1 PG 3 WC Surgery; Transplantation SC Surgery; Transplantation GA LT785 UT WOS:A1993LT78500001 PM 10146299 ER PT J AU ROMANELLI, VA HOWIE, MB MYEROWITZ, PD ZVARA, DA REZAEI, A JACKMAN, DL SINCLAIR, DS MCSWEENEY, TD AF ROMANELLI, VA HOWIE, MB MYEROWITZ, PD ZVARA, DA REZAEI, A JACKMAN, DL SINCLAIR, DS MCSWEENEY, TD TI INTRAOPERATIVE AND POSTOPERATIVE EFFECTS OF VANCOMYCIN ADMINISTRATION IN CARDIAC-SURGERY PATIENTS - A PROSPECTIVE, DOUBLE-BLIND, RANDOMIZED TRIAL SO CRITICAL CARE MEDICINE LA English DT Article DE RANDOMIZED CONTROLLED TRIALS, DOUBLE-BLIND METHOD; HEART SURGERY; CORONARY ARTERY BYPASS GRAFTING; VANCOMYCIN; HYPOTENSION, CHEMICALLY INDUCED; HEMODYNAMICS; DRUG EFFECTS, PERIOPERATIVE PERIOD; NOREPINEPHRINE ID RED-MAN SYNDROME; INDUCED HISTAMINE-RELEASE; ANTIMICROBIAL PROPHYLAXIS; ANAPHYLACTOID REACTIONS; INDUCED HYPOTENSION; PROTAMINE; INFUSION AB Objectives. In response to an increased frequency of Staphylococcus epidermidis infections in postoperative cardiac surgery patients, antibiotic prophylaxis was changed to include both vancomycin and cefazolin pre- and intraoperatively. Subsequent to the addition of vancomycin prophylaxis, clinical impression and retrospective analysis supported a correlation between vancomycin administration and post-cardiopulmonary bypass norepinephrine use. Design: A prospective, double-blind, randomized study. Setting. Tertiary care center in a university hospital. Patients: A total of 58 patients undergoing elective coronary artery bypass surgery under high-dose fentanyl anesthesia. Interventions: Patients were randomized to receive cefazolin and either vancomycin or normal saline pre-, intra-, and postoperatively in a double-blinded protocol. Measurements and Main Results: Hemodynamic profiles and doses of administered vasoactive agents were calculated and recorded for all patients for both intra- and postoperative time periods. Hypotension consistent with vasodilation was treated with a norepinephrine infusion. The rate and frequency of norepinephrine infusions were tabulated for both groups. Hemodynamic profiles that were obtained after the administration of the initial dose of vancomycin or normal saline and before the induction of general anesthesia and those profiles obtained after the induction of general anesthesia until the initiation of cardiopulmonary bypass showed no difference between groups and no evidence of vasodilation secondary to vancomycin administration. However, subsequent doses of vancomycin in the intra- and postoperative periods were associated with a significantly greater frequency of norepinephrine infusions to maintain normal hemodynamic indices. In the vancomycin group, 50% of patients received a norepinephrine infusion in the intra- and/or postoperative period as compared with 14% in the normal saline group (p < .01). Furthermore, the group of patients who received vancomycin and subsequently required a norepinephrine infusion had significantly lower mean systolic arterial pressure, mean arterial pressure, and systemic vascular resistance as compared with all other groups. There were no differences between groups in the use of vasopressors (other than norepinephrine) or fluid balance. Conclusions: The results show that a significantly greater number of patients who received vancomycin required a norepinephrine infusion and that, despite norepinephrine infusion therapy, systemic vascular resistance was not normalized in this group of patients. The study supports the conclusion that perioperative administration of vancomycin in cardiac surgery patients may result in hypotension requiring the use of a vasopressor in an attempt to normalize hemodynamic indices. C1 OHIO STATE UNIV HOSP,DEPT SURG,DIV THORAC & CARDIOVASC SURG,COLUMBUS,OH 43210. USAF,MED CTR,DEPT AIR FORCE,KEESLER AFB,MS 39534. RP ROMANELLI, VA (reprint author), OHIO STATE UNIV HOSP,DEPT ANESTHESIOL,410 W 10TH AVE,N-429,COLUMBUS,OH 43210, USA. NR 34 TC 25 Z9 25 U1 1 U2 1 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 AUG PY 1993 VL 21 IS 8 BP 1124 EP 1131 DI 10.1097/00003246-199308000-00009 PG 8 WC Critical Care Medicine SC General & Internal Medicine GA LQ651 UT WOS:A1993LQ65100009 PM 8339575 ER PT J AU NEU, RW AF NEU, RW TI A MECHANISTIC-BASED THERMOMECHANICAL FATIGUE LIFE PREDICTION MODEL FOR METAL-MATRIX COMPOSITES SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES LA English DT Article ID THERMAL FATIGUE; SCS-6 AB The framework for developing a mechanistic-based life prediction model for metal matrix composites is described. For a composite consisting of unidirectional silicon carbide fibers in a titanium aluminide matrix, SCS-6/Ti-24Al-11Nb (at%) [0]8, three dominant damage mechanisms were identified: (1) matrix fatigue damage, (2) surface-initiated environmental damage, and (3) fiber-dominated damage. Damage expressions were developed for each mechanism along with a method for determining the constants. The damage is summed to obtain the total life. The model is capable of making predictions for a wide range of histories, including isothermal fatigue at different frequencies and stress-ratios, thermomechanical fatigue (TMF) under in-phase and out-of-phase cycling conditions, thermal cycling at constant stress, and stress holds at either maximum or minimum stress. Considering the wide range of cyclic conditions, the predictions compare favorably with experiments. In addition, the controlling damage mechanism for each history is predicted. RP NEU, RW (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH, USA. NR 11 TC 15 Z9 15 U1 0 U2 2 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 AUG PY 1993 VL 16 IS 8 BP 811 EP 828 DI 10.1111/j.1460-2695.1993.tb00121.x PG 18 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA MC213 UT WOS:A1993MC21300002 ER PT J AU RAVICHANDRAN, KS LARSEN, JM AF RAVICHANDRAN, KS LARSEN, JM TI AN APPROACH TO MEASURE THE SHAPES OF 3-DIMENSIONAL SURFACE CRACKS DURING FATIGUE-CRACK GROWTH SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES LA English DT Article ID MICROSTRUCTURE; COALESCENCE; STRENGTH; DEFECTS AB This study presents a technique for measuring shapes of three dimensional surface cracks continuously during fatigue crack growth. The technique uses a laser interferometric system to measure crack compliance and a photomicroscopic system to measure surface crack length. Using a compliance expression for surface cracks, valid for the range of crack aspect ratios (alc) of 0.2 to 2.0, aspect ratio calculations employing compliance and surface crack length measurements are demonstrated for cracks growing from EDM notches of different geometries (shallow or deep). The experimentally determined aspect ratio variations during cyclic crack growth are shown to be in good agreement with the expected variations in aspect ratio, predicted using the stress intensity factor equations for surface cracks. The effects of deviations in the compliance measurement location from the center of the surface crack due to assymetric crack growth are also accounted for through corrections of compliance measurements for crack-asymmetry. The fatigue crack growth rates of surface cracks, after incorporating the variations in aspect ratio in the calculations, agreed with the large-crack growth data for all crack geometries. RP RAVICHANDRAN, KS (reprint author), WRIGHT LAB,MATERIALS DIRECTORATE,MLLN,WL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 33 TC 11 Z9 11 U1 1 U2 2 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 AUG PY 1993 VL 16 IS 8 BP 909 EP 930 DI 10.1111/j.1460-2695.1993.tb00128.x PG 22 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA MC213 UT WOS:A1993MC21300009 ER PT J AU SCOTT, RT ILLIONS, EH KOST, ER DELLINGER, C HOFMANN, GE NAVOT, D AF SCOTT, RT ILLIONS, EH KOST, ER DELLINGER, C HOFMANN, GE NAVOT, D TI EVALUATION OF THE SIGNIFICANCE OF THE ESTRADIOL RESPONSE DURING THE CLOMIPHENE CITRATE CHALLENGE TEST SO FERTILITY AND STERILITY LA English DT Article DE CLOMIPHENE CITRATE; GONADOTROPINS; OVULATION INDUCTION; OVARIAN RESERVE ID CONTROLLED OVARIAN HYPERSTIMULATION; INVITRO FERTILIZATION; STIMULATION; PREDICTION AB Objective: To evaluate the relationship between the E2 response during the clomiphene citrate (CC) challenge test and ovarian responsiveness to exogenous gonadotropins. Design: Performance of a CC challenge test followed by ovulation induction with exogenous gonadotropins as part of participation in an assisted reproduction program. Setting: Assisted reproduction program in a large military tertiary care center. Patients: Two hundred forty-seven women between the ages of 24 and 39 years with normal CC challenge tests within 1 year of their assisted reproduction cycle. Interventions: Performance of CC challenge tests and ovulation induction with exogenous gonadotropins as a component of an assisted reproduction cycle. Main Outcome Measures: Correlation of the E2 response during the CC challenge test and peak E2, the duration of stimulation, number of ampules of exogenous gonadotropins, number of mature follicles, number of mature oocytes recovered, and fertilization and pregnancy rates in an assisted reproduction program. Results: No correlation exists between the E2 response during the CC challenge test and any of the parameters evaluated. Conclusion: Monitoring of the E2 response during the CC challenge test did not predict ovarian responsiveness or pregnancy rates in patients participating in an assisted reproduction program and one may choose not to include it in routine testing. C1 BETHESDA HOSP,BETHESDA FERTIL CTR,CINCINNATI,OH. CUNY MT SINAI SCH MED,DEPT OBSTET GYNECOL & REPROD SCI,NEW YORK,NY 10029. RP SCOTT, RT (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,LACKLAND AFB,TX 78236, USA. NR 9 TC 20 Z9 20 U1 0 U2 1 PU AMER SOC REPRODUCTIVE MEDICINE PI BIRMINGHAM PA 1209 MONTGOMERY HIGHWAY, BIRMINGHAM, AL 35216-2809 SN 0015-0282 J9 FERTIL STERIL JI Fertil. Steril. PD AUG PY 1993 VL 60 IS 2 BP 242 EP 246 PG 5 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA LQ642 UT WOS:A1993LQ64200005 PM 8339818 ER PT J AU SCOTT, RT NEAL, GS ILLIONS, EH HAYSLIP, CA HOFMANN, GE AF SCOTT, RT NEAL, GS ILLIONS, EH HAYSLIP, CA HOFMANN, GE TI THE DURATION OF LEUPROLIDE ACETATE ADMINISTRATION PRIOR TO OVULATION INDUCTION DOES NOT IMPACT OVARIAN RESPONSIVENESS TO EXOGENOUS GONADOTROPINS SO FERTILITY AND STERILITY LA English DT Article DE GONADORELIN; GNRH AGONISTS; LEUPROLIDE ACETATE; OVULATION INDUCTION ID INVITRO FERTILIZATION; LUTEINIZING-HORMONE; AGONIST; STIMULATION; WOMEN; COMBINATION; ANTAGONIST; ESTRADIOL; GROWTH; FSH AB Objective: To evaluate the possible impact that the duration of GnRH agonist (GnRH-a) suppression has on subsequent ovarian responsiveness to exogenous gonadotropins. Design: Prospective evaluation of the relationship between the duration of GnRH-a and multiple parameters of ovarian responsiveness. Setting: Assisted reproduction program in a large military tertiary care center. Patients: One hundred sixty-five women being pretreated with leuprolide acetate (LA) before ovulation induction with exogenous gonadotropins. Interventions: Variable duration of LA administration before stimulation. Main Outcome Measures: Outcome measures include duration of stimulation, days until doubling of basal E2, number of ampules of exogenous gonadotropins, peak E2, number of mature follicles, and number of mature oocytes. Results: The duration of LA pretreatment had no effect on any of the parameters of ovarian responsiveness analyzed. Conclusion: Once complete suppression of gonadal function is attained, the duration of GnRH-a suppression has no impact on subsequent ovarian responsiveness to exogenous gonadotropins. C1 E CAROLINA UNIV,SCH MED,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,GREENVILLE,NC 27834. BETHESDA HOSP,BETHESDA FERTIL CTR,CINCINNATI,OH. RP SCOTT, RT (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,LACKLAND AFB,TX 78236, USA. NR 22 TC 9 Z9 9 U1 0 U2 0 PU AMER SOC REPRODUCTIVE MEDICINE PI BIRMINGHAM PA 1209 MONTGOMERY HIGHWAY, BIRMINGHAM, AL 35216-2809 SN 0015-0282 J9 FERTIL STERIL JI Fertil. Steril. PD AUG PY 1993 VL 60 IS 2 BP 247 EP 253 PG 7 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA LQ642 UT WOS:A1993LQ64200006 PM 8339819 ER PT J AU HAUPT, RL AF HAUPT, RL TI GRATING LOBES IN THE SCATTERING PATTERNS OF EDGE-LOADED STRIPS SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Note AB The scattering patterns from perfectly conducting strips with constant resistive edge loads have periodic grating lobes that rise above the reduced relative sidelobe levels. These grating lobes are a function of the resistive load width and seriously limit scattering sidelobe reduction. Neither tapering the resistivity of the load nor adding more resistive loads of the same width will further reduce the maximum sidelobe level. This paper derives equations to predict the size and location of the grating lobes. In addition, optimum edge loads are derived to produce the smallest maximum sidelobe level. RP HAUPT, RL (reprint author), USAF ACAD,DEPT ELECT ENGN,COLORADO SPRINGS,CO 80840, USA. NR 2 TC 3 Z9 3 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD AUG PY 1993 VL 41 IS 8 BP 1139 EP 1143 DI 10.1109/8.244656 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA MH961 UT WOS:A1993MH96100017 ER PT J AU DUNGEY, CE BOHREN, CF AF DUNGEY, CE BOHREN, CF TI BACKSCATTERING BY NONSPHERICAL HYDROMETEORS AS CALCULATED BY THE COUPLED-DIPOLE METHOD - AN APPLICATION IN RADAR METEOROLOGY SO JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY LA English DT Article AB The severest test of a theory of scattering by particles is,how well it calculates scattering in the backward direction. The coupled-dipole method can be used for accurately calculating backscattering at 94 GHz by hexagonal ice crystals. Backscattering by columns is markedly different from that by plates, which indicates that it might be possible to infer size and shape distributions of ice crystals using recently developed millimeter wave radar. RP DUNGEY, CE (reprint author), DIRECTORATE TECHNOL,HEADQUARTERS AIR WEATHER SERV,DEPT AF,DIV PROD IMPROVEMENT,102 W LOSEY ST,SCOTT AFB,IL 62225, USA. NR 0 TC 23 Z9 24 U1 1 U2 2 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0739-0572 J9 J ATMOS OCEAN TECH JI J. Atmos. Ocean. Technol. PD AUG PY 1993 VL 10 IS 4 BP 526 EP 532 DI 10.1175/1520-0426(1993)010<0526:BBNHAC>2.0.CO;2 PG 7 WC Engineering, Ocean; Meteorology & Atmospheric Sciences SC Engineering; Meteorology & Atmospheric Sciences GA ME698 UT WOS:A1993ME69800009 ER PT J AU SCHWARTZ, Z BRAUN, G KOHAVI, D BROOKS, B AMIR, D SELA, J BOYAN, B AF SCHWARTZ, Z BRAUN, G KOHAVI, D BROOKS, B AMIR, D SELA, J BOYAN, B TI EFFECTS OF HYDROXYAPATITE IMPLANTS ON PRIMARY MINERALIZATION DURING RAT TIBIAL HEALING - BIOCHEMICAL AND MORPHOMETRIC ANALYSES SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH LA English DT Article ID EXTRACELLULAR-MATRIX VESICLES; MEMBRANE ALKALINE-PHOSPHATASE; EPIPHYSEAL CARTILAGE; RESTING ZONE; GROWTH ZONE; BONE; PHOSPHOLIPIDS; CALCIFICATION; COMPLEXES; INVITRO AB The effect of 40- to 60-mesh hydroxyapatite (HA) granules (Calcitek, Inc., Carlsbad, CA) on the process of primary mineralization during bone healing was examined following insertion of the HA granules into rat tibial bone after marrow ablation. Response to HA was assessed by monitoring morphometric and biochemical changes in matrix vesicles, which are extracellular organelles associated with initial calcification. Following insertion of HA, matrix vesicle-enriched membranes (MVEMs) were isolated from the tissue adjacent to the implant and from the endosteum of the contralateral limb at 3,6,14, and 21 days and from a nonimplanted control group (t = 0). MVEM alkaline phosphatase- and phospholipase A2-specific activities were increased on days 6 (peak) and 14; phosphatidylserine content was also elevated on days 6 and 14 (peak). Comparable changes were seen in the contralateral limb but at lesser magnitudes. Morphological changes were observed as well. The number of matrix vesicles/mum2 matrix increased on days 6 (peak) and 14. The mean diameter of the matrix vesicles was elevated on days 6 (peak), 14, and 21. Mean distance from the calcifying front increased on day 6 but was decreased on days 14 and 21. These results indicated that HA behaves like bone-bonding implants in that there is a stimulation of matrix vesicle enzymes, increased phosphatidylserine content, and increase numbers of matrix vesicles. However, the increases occur only after 6 days postimplantation, indicating a delay in response when compared to normal healing. This delay is confirmed by the morphometric measurements. HA causes a reduction in the response associated with marrow ablation. In addition, the effects of HA are comparable locally and systemically but with different intensity. These observations suggest that osteogenic cells are able to compensate for the inhibitory effects of HA and primary calcification involves normal matrix vesicle production and maturation, if somewhat delayed and reduced in magnitude. The ability to support primary mineral formation may contribute to the successful bonding of HA with surrounding osseous tissue. (C) 1993 John Wiley & Sons, Inc. C1 UNIV TEXAS,HLTH SCI CTR,DEPT ORTHOPAED,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284. HEBREW UNIV JERUSALEM,DEPT PERIODONT,JERUSALEM,ISRAEL. HEBREW UNIV JERUSALEM,DEPT REHABIL,JERUSALEM,ISRAEL. HEBREW UNIV JERUSALEM,DEPT ORTHOPAED,JERUSALEM,ISRAEL. HEBREW UNIV JERUSALEM,DEPT PATHOL,JERUSALEM,ISRAEL. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. FU NIDCR NIH HHS [DE-08603, DE-05937] NR 54 TC 28 Z9 29 U1 0 U2 1 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0021-9304 J9 J BIOMED MATER RES JI J. Biomed. Mater. Res. PD AUG PY 1993 VL 27 IS 8 BP 1029 EP 1038 DI 10.1002/jbm.820270808 PG 10 WC Engineering, Biomedical; Materials Science, Biomaterials SC Engineering; Materials Science GA LM052 UT WOS:A1993LM05200007 PM 8408115 ER PT J AU LUSARDI, DA WIRTH, MA WURTZ, D ROCKWOOD, CA AF LUSARDI, DA WIRTH, MA WURTZ, D ROCKWOOD, CA TI LOSS OF EXTERNAL ROTATION FOLLOWING ANTERIOR CAPSULORRHAPHY OF THE SHOULDER SO JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME LA English DT Article ID PUTTI-PLATT; DISLOCATION; BANKART AB A retrospective study was performed on twenty shoulders in nineteen patients who had been managed for severe loss of external rotation of the glenohumeral joint after a previous anterior capsulorrhaphy for recurrent instability. All patients had noted a restricted range of motion, and seventeen shoulders had been painful. In seven shoulders, the humeral head had been subluxated or dislocated posteriorly, and sixteen shoulders had been affected by mild to severe glenohumeral osteoarthrosis. All twenty shoulders were treated with a reoperation, which consisted of a release of the anterior soft tissue. In addition, eight shoulders had a total arthroplasty and one had a hemiarthroplasty. At an average duration of follow-up of forty-eight months, all shoulders had an improvement in the ratings for pain and range of motion. The average increase in external rotation was 45 degrees (range, 25 to 65 degrees). Patients who have a major loss of external rotation following anterior capsulorrhaphy of the shoulder may be at risk for the development of posterior subluxation and glenohumeral osteoarthrosis. The performance of an anterior release should be considered for these patients. C1 WILFORD HALL USAF MED CTR,DEPT ORTHOPED SURG,LACKLAND AFB,TX 78236. NR 24 TC 99 Z9 99 U1 0 U2 1 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 AUG PY 1993 VL 75A IS 8 BP 1185 EP 1192 PG 8 WC Orthopedics; Surgery SC Orthopedics; Surgery GA LU475 UT WOS:A1993LU47500008 PM 8354677 ER PT J AU GRUNBERG, SM CROWLEY, J LIVINGSTON, R GILL, I WILLIAMSON, SK OROURKE, T BRAUN, T MARSHALL, ME WEICK, JK BALCERZAK, SP MARTINO, RL AF GRUNBERG, SM CROWLEY, J LIVINGSTON, R GILL, I WILLIAMSON, SK OROURKE, T BRAUN, T MARSHALL, ME WEICK, JK BALCERZAK, SP MARTINO, RL TI EXTENDED ADMINISTRATION OF ORAL ETOPOSIDE AND ORAL CYCLOPHOSPHAMIDE FOR THE TREATMENT OF ADVANCED NON-SMALL-CELL LUNG-CANCER - A SOUTHWEST-ONCOLOGY-GROUP STUDY SO JOURNAL OF CLINICAL ONCOLOGY LA English DT Article ID PHASE-II TRIAL; COMBINATION CHEMOTHERAPY; PHARMACOLOGY C1 UNIV SO CALIF,SCH MED,LOS ANGELES,CA 90033. OHIO STATE UNIV,CTR HLTH,COLUMBUS,OH 43210. UNIV SO ALABAMA,MOBILE,AL 36688. SW ONCOL GRP,CTR STAT,SEATTLE,WA. PUGET SOUND ONCOL CONSORTIUM,SEATTLE,WA. UNIV KANSAS,MED CTR,KANSAS CITY,KS 66103. BROOKE ARMY MED CTR,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. UNIV COLORADO,BOULDER,CO 80309. UNIV CINCINNATI,MED CTR,CINCINNATI,OH 45267. CLEVELAND CLIN EDUC FDN,CLEVELAND,OH 44106. FU NCI NIH HHS [CA-12644, CA-20319, CA-37429] NR 15 TC 14 Z9 14 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0732-183X J9 J CLIN ONCOL JI J. Clin. Oncol. PD AUG PY 1993 VL 11 IS 8 BP 1598 EP 1601 PG 4 WC Oncology SC Oncology GA LR480 UT WOS:A1993LR48000024 PM 8393099 ER PT J AU ENLOE, CL COOKE, DL MEASSICK, S CHAN, C TAUTZ, MF AF ENLOE, CL COOKE, DL MEASSICK, S CHAN, C TAUTZ, MF TI ION COLLECTION IN A SPACECRAFT WAKE - LABORATORY SIMULATIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID AE-C SATELLITE; IONOSPHERIC SATELLITE; PLASMA PARAMETERS; BODY-SIZE; SHUTTLE AB Data from a laboratory simulation of current collection by a highly biased body in a spacecraft wake are presented. Ion collection from the plasma stream is investigated for both axisymmetric and nonaxisymmetric geometries. Spatially resolved current collection data, obtained by using a segmented collector, are presented for the first time. A threshold potential for the onset of current collection exists; this threshold depends strongly on the geometry of the problem and is related directly to the details of the trajectories of the collected ions. Results from an approximate numerical model of the laboratory experiment as well as the predictions of a simplified analysis are given. The agreement of the numerical solution with the experimental data is good. C1 NORTHEASTERN UNIV,DEPT ELECT & COMP ENGN,BOSTON,MA 02115. RADEX INC,BEDFORD,MA 01730. RP ENLOE, CL (reprint author), USAF,PHILLIPS LAB,BEDFORD,MA 01731, USA. NR 33 TC 9 Z9 9 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD AUG 1 PY 1993 VL 98 IS A8 BP 13635 EP 13644 DI 10.1029/93JA01191 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA LR054 UT WOS:A1993LR05400040 ER PT J AU ARENA, CA EVANS, DB HILTON, TJ AF ARENA, CA EVANS, DB HILTON, TJ TI A COMPARISON OF BOND STRENGTHS AMONG CHAIRSIDE HARD RELINE MATERIALS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID RESIN AB Several chairside hard resin reline materials have been introduced to improve the fit and function of existing denture bases. However, it is not known whether the bond strengths among the various chairside reline and denture bass materials are significantly affected by their differences in chemical composition. This study evaluated the bond strengths of five chairside hard reline materials (Extoral VLC, Flexacryl Hard, Kooliner, Light Liner, and Triad Hi-Flow VLC reline material) to two different denture base resins (Lucitone 199 and Triad VLC) by use of a three-point transverse flexural test. The reline resins are representative of autopolymerizing, light- and dual-cured materials. The results indicate that Triad VLC reline resin with bonding agent gave the highest bond strengths to Triad VLC denture base resin. Light Liner reline resin gave the highest repair bond strengths to Lucitone 199 denture base resin. C1 WILFORD HALL USAF MED CTR,DEPT GEN DENT,DSG,DUNN DENT CLIN,1615 TREUMPER ST,LACKLAND AFB,TX 78236. NR 8 TC 31 Z9 33 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD AUG PY 1993 VL 70 IS 2 BP 126 EP 131 DI 10.1016/0022-3913(93)90006-A PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LQ364 UT WOS:A1993LQ36400006 PM 8371174 ER PT J AU ZAHN, CM HANKINS, GDV YEOMANS, ER AF ZAHN, CM HANKINS, GDV YEOMANS, ER TI KARYOTYPIC ABNORMALITIES AND HYDRAMINIOS - ROLE OF AMNIOCENTESIS SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article ID POLYHYDRAMNIOS AB Hydramnios complicates up to 1.6% of pregnancies, with major fetal malformations found in an average of 20% of patients with hydramnios. Chromosomal abnormalities, although associated with some conditions in which hydramnios is present, have not been reported to complicate a significant percentage of hydramnios cases. Data from 45 patients admitted during the period January 1, 1985-May 31,1990, were analyzed. All patients had hydramnios sufficiently severe to merit hospitalization for diagnosis and/or treatment. Amniocentesis was performed at the discretion of the attending physician and not under a specific protocol. The incidence of major fetal structural malformations was 36%. Of patients in whom amniocentesis was performed, 22% were found to have karyotypic abnormalities, none of which was specifically suspected prior to the amniocenteses. Neither the estimated gestational age nor the assessment of the amount of amniotic fluid differed between those with karyotypic abnormalities and those with normal chromosome complements. This information suggests that both advanced ultrasound studies and amniocentesis are beneficial in the evaluation of hydramnios. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236. NR 14 TC 11 Z9 12 U1 0 U2 0 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD AUG PY 1993 VL 38 IS 8 BP 599 EP 602 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA LT884 UT WOS:A1993LT88400009 PM 8410864 ER PT J AU KEARSE, WS STCLAIR, SR HIXSON, CJ RITCHEY, ML AF KEARSE, WS STCLAIR, SR HIXSON, CJ RITCHEY, ML TI FUNCTIONAL-CHARACTERISTICS OF ENTEROCYSTOPLASTY AFTER INTERRUPTION OF THE MESENTERIC BLOOD-SUPPLY SO JOURNAL OF UROLOGY LA English DT Article; Proceedings Paper CT 1992 ANNUAL MEETING OF THE SECTION ON UROLOGY OF THE AMERICAN ACADEMY OF PEDIATRICS CY OCT 10-15, 1992 CL SAN FRANCISCO, CA SP AMER ACAD PEDIAT, SECT UROL DE BLADDER; BLOOD SUPPLY; ILEUM ID VIABILITY; AUGMENTATION; DOPPLER AB Previous studies have suggested that small (5 to 7 cm.) enteral patches used for bladder augmentation could remain viable following ligation of the mesenteric vascular pedicle. We performed subtotal cystectomy and ileocystoplasty in 5 female mongrel dogs using a 25 cm. segment of detubularized ileum. Functional bladder capacity, compliance and size of the bowel segment were measured 4 months later, and the mesenteric blood supply was interrupted. Immediately after pedicle ligation all patches appeared dusky and had diminished or absent Doppler pulsations with poor fluorescein uptake. However, all animals had an uneventful postoperative course without any signs of urine leak or peritonitis. Urodynamic studies were performed 2 months later and the animals were re-explored with removal of the augmented bladder for histological examination. All of the bowel segments were viable on exploration at that time but a decrease in patch size was noted ranging from 9 to 63%. Functional bladder capacity was also decreased in 4 animals. Although the integrity of augmentation was maintained in all animals, changes in bladder capacity and size of the enteral segment occurred in the majority after interruption of the mesenteric blood supply. These changes could possibly negate the clinical benefits that had been achieved by the bladder augmentation. This finding would suggest the need to consider revision of the enterocystoplasty in the event of inadvertent ligation of the vascular pedicle. C1 USAF,WILFORD HALL MED CTR,DEPT CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. UNIV MICHIGAN,UROL SECT,ANN ARBOR,MI 48109. RP KEARSE, WS (reprint author), USAF,WILFORD HALL MED CTR,DEPT UROL,LACKLAND AFB,TX 78236, USA. NR 11 TC 5 Z9 5 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD AUG PY 1993 VL 150 IS 2 BP 593 EP 596 PN 2 PG 4 WC Urology & Nephrology SC Urology & Nephrology GA LM767 UT WOS:A1993LM76700005 PM 8326604 ER PT J AU PARSONS, DS PHILLIPS, SE AF PARSONS, DS PHILLIPS, SE TI FUNCTIONAL ENDOSCOPIC SURGERY IN CHILDREN - A RETROSPECTIVE ANALYSIS OF RESULTS SO LARYNGOSCOPE LA English DT Article ID SINUSITIS AB The impact of chronic sinusitis on children has become more apparent as the awareness of the disease has increased. Consequently, the knowledge of its effect in the pediatric patient has expanded dramatically. Functional endoscopic sinus surgery (FESS) has become the primary surgical modality for treatment of this illness in children who have not responded to optimal medical management. A retrospective study was conducted in patients from 7 months to 17 years of age who were treated with FESS for chronic sinusitis refractory to medical therapy. Using a comprehensive parental questionnaire and a review of the medical charts, results were analyzed from these post-FESS children. Parents of the children were interviewed with a mean follow-up time of 21.8 months postoperatively. Factors discussed included chronic nasal obstruction, purulent nasal discharge, postnasal drip, chronic cough, halitosis, headaches, behavioral problems, allergies, and asthma symptoms. This preliminary investigation suggests that FESS is effective in treating medically recalcitrant severe chronic sinusitis in children. C1 USAF,WILFORD HALL MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236. NR 11 TC 83 Z9 87 U1 0 U2 2 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD AUG PY 1993 VL 103 IS 8 BP 899 EP 903 PG 5 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA LR389 UT WOS:A1993LR38900011 PM 8361292 ER PT J AU PUFFER, RL AF PUFFER, RL TI WINGED VICTORY - THE ARMY AIR FORCES IN WORLD-WAR-II - PERRET,G SO LIBRARY JOURNAL LA English DT Book Review RP PUFFER, RL (reprint author), USAF,HIST PROG,LOS ANGELES,CA, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD AUG PY 1993 VL 118 IS 13 BP 124 EP & PG 0 WC Information Science & Library Science SC Information Science & Library Science GA LT263 UT WOS:A1993LT26300177 ER PT J AU GSCHWENDER, L SNYDER, CE SHARMA, SK AF GSCHWENDER, L SNYDER, CE SHARMA, SK TI DEVELOPMENT OF MIL-H-53119, -54-DEGREES-C TO 175-DEGREES-C HIGH-TEMPERATURE NONFLAMMABLE HYDRAULIC FLUID FOR AIR-FORCE SYSTEMS SO LUBRICATION ENGINEERING LA English DT Article DE ADDITIVES; HYDRAULIC FLUID; NONFLAMMABLE AB A nonflammable hydraulic fluid for - 54-degrees-C to 135-degrees-C operation has been previously developed based on a chlorotrifluoroethylene oligomer (CTFE) base fluid formulated with performance improving additives, a proprietary antiwear additive, now herein described, and a rust inhibitor, a specially prepared barium dinonylnaphthalene sulfonate (BSN). New requirements for advanced high performance aircraft led to a new fluid capable of operating from - 54-degrees-C to 175-degrees-C. The earlier nonflammable hydraulic fluid was limited in thermal stability to 135-degrees-C by the rust inhibitor. This paper describes research and development leading to a successful formulation consisting of the same CTFE base fluid, the same antiwear additive, and a new zinc-based sulfonate antirust additive. Validation using an actual state-of-the-art hydraulic pump was successfully accomplished at 135-degrees-C and the data is presented. RP GSCHWENDER, L (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 3 Z9 3 U1 0 U2 1 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD AUG PY 1993 VL 49 IS 8 BP 621 EP 630 PG 10 WC Engineering, Mechanical SC Engineering GA LR673 UT WOS:A1993LR67300004 ER PT J AU WIEDEMAN, JE AF WIEDEMAN, JE TI ATLS AND THE GULF-WAR - REPLY SO MILITARY MEDICINE LA English DT Letter RP WIEDEMAN, JE (reprint author), USAF,MED GRP 48,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD AUG PY 1993 VL 158 IS 8 BP A6 EP A6 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA LT492 UT WOS:A1993LT49200003 ER PT J AU LIBY, BW MCIVER, JK STATMAN, D AF LIBY, BW MCIVER, JK STATMAN, D TI BEAM QUALITY MEASUREMENTS OF A UNIDIRECTIONAL SELF-PUMPED PHASE-CONJUGATE MIRROR SO OPTICS COMMUNICATIONS LA English DT Article ID SEMICONDUCTOR-LASERS; OPTICAL FEEDBACK AB The beam quality of the light reflected off a unidirectional ring passive phase-conjugate mirror (PPCM) is considered. A focusing ratio is defined and used to measure the beam quality. The unidirectional ring PPCM can act like a phase conjugator or a static hologram, depending on the time scale of the experiment. The aberration correction properties of each device are compared to that of a conventional mirror. C1 UNIV NEW MEXICO,DEPT PHYS & ASTRON,ALBUQUERQUE,NM 87131. RP LIBY, BW (reprint author), USAF,PHILLIPS LAB,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD AUG 1 PY 1993 VL 101 IS 1-2 BP 79 EP 84 DI 10.1016/0030-4018(93)90327-2 PG 6 WC Optics SC Optics GA LN447 UT WOS:A1993LN44700016 ER PT J AU LIBY, BW STATMAN, D AF LIBY, BW STATMAN, D TI PHASE DELAY IN PHASE-CONJUGATE EXTERNAL-CAVITY LASERS SO OPTICS COMMUNICATIONS LA English DT Article ID SEMICONDUCTOR-LASERS; OPTICAL FEEDBACK; INJECTION-LASER; MIRROR; LINEWIDTH; DYNAMICS AB The boundary conditions of phase-conjugate external cavity lasers are considered. It is shown that the light returning to the laser from the external cavities has a specified phase, which is determined by the boundary conditions of the particular cavity. This phase always acts to reduce the threshold pin for the laser with feedback. This is true regardless of the external phase delay. Experimental verification using semiconductor lasers is provided and the analysis is extended to the coupling of two lasers via photorefractive coupling. RP LIBY, BW (reprint author), USAF,PHILLIPS LAB,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 28 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD AUG 1 PY 1993 VL 101 IS 1-2 BP 113 EP 123 DI 10.1016/0030-4018(93)90331-X PG 11 WC Optics SC Optics GA LN447 UT WOS:A1993LN44700020 ER PT J AU COPELAN, EA BIGGS, JC SZER, J THOMPSON, JM CRILLEY, P BRODSKY, I KLEIN, JL KAPOOR, N HARMAN, GS AVALOS, BR AF COPELAN, EA BIGGS, JC SZER, J THOMPSON, JM CRILLEY, P BRODSKY, I KLEIN, JL KAPOOR, N HARMAN, GS AVALOS, BR TI ALLOGENEIC BONE-MARROW TRANSPLANTATION FOR ACUTE MYELOGENOUS LEUKEMIA, ACUTE LYMPHOCYTIC-LEUKEMIA, AND MULTIPLE-MYELOMA FOLLOWING PREPARATION WITH BUSULFAN AND CYCLOPHOSPHAMIDE (BUCY2) SO SEMINARS IN ONCOLOGY LA English DT Article; Proceedings Paper CT SYMP ON PREPARATIVE REGIMENS IN BONE MARROW TRANSPLANTATION CY DEC 04, 1992 CL ANAHEIM, CA SP HAHNEMANN UNIV, BURROUGHS WELLCOME ID TOTAL-BODY IRRADIATION; ACUTE NONLYMPHOCYTIC LEUKEMIA; PHASE-I; REGIMEN; DISEASE; EXPERIENCE; DISORDERS; TOXICITY; ADULTS C1 OHIO STATE UNIV,ARTHUR G JAMES CANC HOSP,COLUMBUS,OH 43210. OHIO STATE UNIV,RES INST,COLUMBUS,OH 43210. ST VINCENTS HOSP,DEPT HAEMATOL,SYDNEY,NSW 2010,AUSTRALIA. WILFORD HALL USAF MED CTR,DEPT HEMATOL ONCOL,LACKLAND AFB,TX 78236. HAHNEMANN UNIV,DEPT NEOPLAST DIS,PHILADELPHIA,PA 19102. ALFRED HOSP,BONE MARROW TRANSPLANT UNIT,PRAHRAN,VIC 3181,AUSTRALIA. RP COPELAN, EA (reprint author), OHIO STATE UNIV,DEPT INTERNAL MED,DIV BONE MARROW TRANSPLANT,ROOM 303 E DOAN,410 W 10TH AVE,COLUMBUS,OH 43210, USA. OI Szer, Jeff/0000-0001-6783-2301 NR 37 TC 23 Z9 24 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0093-7754 J9 SEMIN ONCOL JI Semin. Oncol. PD AUG PY 1993 VL 20 IS 4 SU 4 BP 33 EP 38 PG 6 WC Oncology SC Oncology GA LT572 UT WOS:A1993LT57200006 PM 8342074 ER PT J AU STROLLO, PJ SANDERS, MH AF STROLLO, PJ SANDERS, MH TI SIGNIFICANCE AND TREATMENT OF NONAPNEIC SNORING SO SLEEP LA English DT Article DE SNORING; SLEEP DISORDERS; CONTINUOUS POSITIVE AIRWAY PRESSURE (CPAP); AROUSAL; MULTIPLE SLEEP LATENCY TEST (MSLT) ID OBSTRUCTIVE SLEEP-APNEA; POSITIVE AIRWAY PRESSURE; DAYTIME SLEEPINESS; HEAVY SNORERS; RISK FACTOR; NREM SLEEP; HYPERTENSION; DISEASE; AROUSAL; RESISTANCE AB Snoring has been associated with an increased risk of vascular morbidity and mortality and with the complaint of excessive daytime sleepiness. Much of this risk may be attributable to concomitant sleep apnea or hypopnea. Recent work suggests that in certain individuals, snoring without apnea or hypopnea can lead to sleep disruption. This appears to be due to augmented ventilatory effort in response to an increased ''internal'' resistive load that results in repetitive arousals from sleep. This condition has been termed the upper airway resistance syndrome (UARS). Identification of load-related arousals in patients with the UARS may require the addition of esophageal pressure monitoring to the diagnostic polysomnogram. Nasal continuous positive airway pressure (CPAP) effectively eliminates snoring, hypopnea and apnea and therefore may be useful in treating this form of sleep-disordered breathing. The diagnostic criteria and indications, if any, for chronic treatment of these nonapneic snorers with nasal CPAP as well as long term compliance remain to be determined. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. UNIV PITTSBURGH,SCH MED,DEPT MED,DIV PULM ALLERGY & CRIT CARE MED,PITTSBURGH,PA 15261. VET AFFAIRS MED CTR OAKLAND,PITTSBURGH,PA. FU NHLBI NIH HHS [NHLBI 5T32HL07563-07] NR 43 TC 29 Z9 29 U1 0 U2 1 PU AMER SLEEP DISORDERS ASSOC PI ROCHESTER PA 1610 14TH STREET NW SUITE 300, ROCHESTER, MN 55806 SN 0161-8105 J9 SLEEP JI Sleep PD AUG PY 1993 VL 16 IS 5 BP 403 EP 408 PG 6 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA LT640 UT WOS:A1993LT64000001 PM 8378680 ER PT J AU LIOU, JJ LIOU, LL HUANG, CI AF LIOU, JJ LIOU, LL HUANG, CI TI KINK EFFECT ON THE BASE CURRENT OF HETEROJUNCTION BIPOLAR-TRANSISTORS SO SOLID-STATE ELECTRONICS LA English DT Note RP LIOU, JJ (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 2 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD AUG PY 1993 VL 36 IS 8 BP 1222 EP 1224 DI 10.1016/0038-1101(93)90205-5 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA LK580 UT WOS:A1993LK58000021 ER PT J AU TAYLOR, SM FUJITANI, RM MYERS, JC MILLS, JL AF TAYLOR, SM FUJITANI, RM MYERS, JC MILLS, JL TI COMBINED CORONARY-ARTERY BYPASS AND ABDOMINAL AORTIC ANEURYSMECTOMY - APPROPRIATE MANAGEMENT IN SELECTED CASES SO SOUTHERN MEDICAL JOURNAL LA English DT Note ID DISEASE; REPAIR C1 WILFORD HALL USAF MED CTR,DEPT GEN SURG,VASC SURG SERV,LACKLAND AFB,TX 78236. OI Mills, Joseph/0000-0002-4955-4384 NR 9 TC 4 Z9 5 U1 0 U2 0 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD AUG PY 1993 VL 86 IS 8 BP 974 EP 976 DI 10.1097/00007611-199308000-00028 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA LU624 UT WOS:A1993LU62400028 PM 8351567 ER PT J AU SIMARD, RJ AF SIMARD, RJ TI SYSTEM-DESIGN MODELING AND METAMODELING - VANGIGCH,JP SO SYSTEMS PRACTICE LA English DT Book Review RP SIMARD, RJ (reprint author), USAF,ROME LAB,32 HANGER RD,GRIFFISS AFB,NY 13441, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0894-9859 J9 SYST PRACTICE JI Syst. Pract. PD AUG PY 1993 VL 6 IS 4 BP 438 EP 440 PG 3 WC Management SC Business & Economics GA LN355 UT WOS:A1993LN35500009 ER PT J AU TONG, K AF TONG, K TI SOLITARY THYROID-NODULES SO NEW ENGLAND JOURNAL OF MEDICINE LA English DT Letter ID DISEASE RP TONG, K (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 4 TC 2 Z9 2 U1 0 U2 0 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 JUL 29 PY 1993 VL 329 IS 5 BP 360 EP 360 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA LN621 UT WOS:A1993LN62100018 PM 8321269 ER PT J AU JACOBY, I SCOTT, TE AF JACOBY, I SCOTT, TE TI NIH CONSENSUS CONFERENCE ON LAPAROSCOPIC CHOLECYSTECTOMY - ARE REFORMS NECESSARY SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter C1 USAF,BILOXI,MS. RP JACOBY, I (reprint author), UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814, USA. NR 3 TC 5 Z9 5 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 JUL 21 PY 1993 VL 270 IS 3 BP 320 EP 321 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA LM435 UT WOS:A1993LM43500015 PM 8315770 ER PT J AU WANG, YH LI, SS HO, P MANASREH, MO AF WANG, YH LI, SS HO, P MANASREH, MO TI A NORMAL-INCIDENCE TYPE-II QUANTUM-WELL INFRARED PHOTODETECTOR USING AN INDIRECT ALAS AL0.5GA0.5AS SYSTEM GROWN ON (110) GAAS FOR MIDWAVELENGTH AND LONG-WAVELENGTH MULTICOLOR DETECTION SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID INTERSUBBAND ABSORPTION; HETEROSTRUCTURES AB A normal-incidence type-II indirect AlAs/Al0.5GaD.5As quantum-well infrared photodetector grown on (110) GaAs by molecular-beam epitaxy for mid- and long-wavelength multispectrum detection has been developed. The normal-incident excitation of long-wavelength intersubband transition was achieved in the [110] X-band-confined AlAs quantum wells. Six absorption peaks including four from X-band to r-band intersubband resonant transitions were observed at wavelengths, lambda(p1 - 6) = 2.2, 2.7, 3.5, 4.8, 6.5, and 12.5 mum. The resonant transport from X band to GAMMA band gives rise to high photoconductive gain, which is highly desirable for focal plane arrays image sensor applications. C1 GE CO,ELECTR LAB,SYRACUSE,NY 13221. WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP WANG, YH (reprint author), UNIV FLORIDA,DEPT ELECT ENGN,GAINESVILLE,FL 32611, USA. NR 25 TC 11 Z9 12 U1 1 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 JUL 15 PY 1993 VL 74 IS 2 BP 1382 EP 1387 DI 10.1063/1.354896 PG 6 WC Physics, Applied SC Physics GA LM782 UT WOS:A1993LM78200097 ER PT J AU REYNOLDS, DC JOGAI, B YU, PW STUTZ, CE AF REYNOLDS, DC JOGAI, B YU, PW STUTZ, CE TI EXCITATION OF OPTICAL-TRANSITIONS IN THE INXGA1-XAS-GAAS QUANTUM-WELL SYSTEM BY THE FREE-EXCITON IN THE BARRIER SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID GAAS-GA1-XALXAS; SUPERLATTICES; PHOTOREFLECTANCE; ENERGY; HOLE AB In the InxGa1-xAs-GaAs coupled double quantum well system the free exciton in the GaAs barrier is directly coupled to the symmetric heavy-hole free exciton in the quantum well. In contrast the free exciton in the barrier does not couple to the symmetric light-hole free exciton in the quantum well, or to Landau levels associated with the lowest energy conduction and valence subband levels. These results are explained by momentum conservation rules. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WL ELRA,WRIGHT PATTERSON AFB,OH 45433. RP REYNOLDS, DC (reprint author), WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435, USA. NR 13 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUL 15 PY 1993 VL 74 IS 2 BP 1453 EP 1455 DI 10.1063/1.354887 PG 3 WC Physics, Applied SC Physics GA LM782 UT WOS:A1993LM78200113 ER PT J AU COLON, JE ELSAESSER, DW YEO, YK HENGEHOLD, RL POMRENKE, GS AF COLON, JE ELSAESSER, DW YEO, YK HENGEHOLD, RL POMRENKE, GS TI ENHANCEMENT OF THE ER3+ EMISSIONS FROM ALGAASER CODOPED WITH OXYGEN SO APPLIED PHYSICS LETTERS LA English DT Article ID LUMINESCENCE; INP; EXCITATION; SILICON; ER-3+; YB AB Codoping AlxGa1-xAs with both erbium and oxygen drastically enhanced the intensity of the Er3+-4f emissions over that observed from AlxGa1-xAs doped with Er alone, however, similar codoping in GaAs did not result in any enhancement. It is believed that the enhancement of the intra-4f emissions is either due to the formation of Er-Al-O complexes or Er-O complexes along with the variation of the band gap in AlxGa1-xAs, or both. C1 USAF,OFF SCI RES,WASHINGTON,DC 20332. RP COLON, JE (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 12 Z9 12 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUL 12 PY 1993 VL 63 IS 2 BP 216 EP 218 DI 10.1063/1.110345 PG 3 WC Physics, Applied SC Physics GA LL831 UT WOS:A1993LL83100033 ER PT J AU WORDEN, SP SPONABLE, JM GAUBATZ, W KLEVATT, P AF WORDEN, SP SPONABLE, JM GAUBATZ, W KLEVATT, P TI SINGLE-STAGE ROCKET TECHNOLOGY - HERE TODAY SO AEROSPACE AMERICA LA English DT Article RP WORDEN, SP (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0740-722X J9 AEROSPACE AM JI Aerosp. Am. PD JUL PY 1993 VL 31 IS 7 BP 20 EP 23 PG 4 WC Engineering, Aerospace SC Engineering GA LJ674 UT WOS:A1993LJ67400008 ER PT J AU GAITONDE, D SHANG, JS AF GAITONDE, D SHANG, JS TI ACCURACY OF FLUX-SPLIT ALGORITHMS IN HIGH-SPEED VISCOUS FLOWS SO AIAA JOURNAL LA English DT Article ID NAVIER-STOKES EQUATIONS; CONSERVATION-LAWS; RELAXATION; SCHEMES AB The flux-vector split methods of MacCormack and Candler (MC) and of van Leer (vL) and the flux-difference split method of Roe are investigated in problems representative of complex flows under laminar conditions: the blunt-body flow at Mach 16 and the now past a 24-deg compression corner at Mach 14. Higher order accuracy is obtained with the monotonic upwind-centered scheme for conservation laws (MUSCL) approach, viscous terms are centrally differenced, and an implicit relaxation method is employed for time integration. Emphasis is placed on evaluating the accuracy in prediction of surface quantities of engineering interest. The performance of the schemes is problem dependent. For the flow past the blunt body, the surface pressure is insensitive to the method as well as mesh resolution. Both the MC and Roe schemes predict accurate heat transfer rates whereas results with the vL method are dependent on the limiter employed. The overall distinction between the schemes is diminished for the compression corner especially on finer meshes. The extent of the separation region is notably influenced by the choice of the limiter. Several issues relating to the components of the calculation method are examined. RP USAF, WRIGHT LAB, FIMM, FLIGHT DYNAM DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 30 TC 14 Z9 18 U1 0 U2 0 PU AMER INST AERONAUTICS ASTRONAUTICS PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0001-1452 EI 1533-385X J9 AIAA J JI AIAA J. PD JUL PY 1993 VL 31 IS 7 BP 1215 EP 1221 DI 10.2514/3.11755 PG 7 WC Engineering, Aerospace SC Engineering GA LM761 UT WOS:A1993LM76100007 ER PT J AU GRANDHI, RV BHARATRAM, G VENKAYYA, VB AF GRANDHI, RV BHARATRAM, G VENKAYYA, VB TI MULTIOBJECTIVE OPTIMIZATION OF LARGE-SCALE STRUCTURES SO AIAA JOURNAL LA English DT Article ID GAME-THEORY APPROACH; DESIGN AB This paper presents a multiobjective optimization algorithm based on generalized compound scaling techniques. The algorithm handles any number of objective functions, similar to handling behavior constraints. This technique generates a partial Pareto set while solving the optimization problem. A reliability-based decision criterion is used for selecting the best compromise design. The example cases considered in this work include various disciplines in airframe structures, such as stress, displacement, and frequency with hundreds of design variables and constraints. This paper also discusses the concept of Pareto-optimal solutions in the context of a multiobjective structural optimization problem and the commonly used methods of generating Pareto-optimal solutions. C1 USAF,FLIGHT DYNAM DIRECTORATE,ANAL & OPTIMIZAT BRANCH,WRIGHT PATTERSON AFB,OH 45433. RP GRANDHI, RV (reprint author), WRIGHT STATE UNIV,DEPT MECH & MAT ENGN,DAYTON,OH 45435, USA. NR 20 TC 24 Z9 25 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 JUL PY 1993 VL 31 IS 7 BP 1329 EP 1337 DI 10.2514/3.11771 PG 9 WC Engineering, Aerospace SC Engineering GA LM761 UT WOS:A1993LM76100023 ER PT J AU RAAB, SS BERG, LC SWANSON, PE WICK, MR AF RAAB, SS BERG, LC SWANSON, PE WICK, MR TI ADENOCARCINOMA IN THE LUNG IN PATIENTS WITH BREAST-CANCER - A PROSPECTIVE ANALYSIS OF THE DISCRIMINATORY VALUE OF IMMUNOHISTOLOGY SO AMERICAN JOURNAL OF CLINICAL PATHOLOGY LA English DT Article ID EPITHELIAL MEMBRANE ANTIGEN; IMMUNOHISTOCHEMICAL ANALYSIS; HUMAN NEOPLASMS; CELL CARCINOMA; PROTEIN; IMMUNOREACTIVITY; RESECTION; PATHOLOGY; FEATURES; MARKER AB In some patients with a history of breast cancer who also have masses in the lung, making a clinical distinction between primary pulmonary neoplasia and pulmonary metastasis of mammary carcinoma may be impossible. To ascertain whether immunohistologic studies could contribute to resolving this problem, the authors undertook a prospective study of 30 cases showing synchronous or metachronous adenocarcinomas in these two sites. A predefined panel of antibodies-as derived from published antigenic catalogs for breast and lung cancer-was applied to each case. Tumors were interpreted as metastases if they were positive for gross cystic disease fluid protein-15, estrogen receptor protein, or S-100 protein. Conversely, primary adenocarcinomas of the lung were defined by their expression of carcinoembryonic antigen and a lack of the other three determinants. Using these criteria, 15 lesions were classified as metastatic; 11 were categorized as primary pulmonary adenocarcinomas; and 4 cases were indeterminate in origin. Responses to corresponding therapeutic protocols generally supported the validity of the immunohistologic diagnoses; 8 of 15 patients treated for metastatic breast cancer were well at last contact, as were 5 of 11 patients who received therapy for primary carcinoma of the lung. These data suggest that immunohistology r plays a useful role in distinguishing mammary from pulmonary adenocarcinomas. C1 WASHINGTON UNIV,BARNES HOSP,MED CTR,DEPT PATHOL,DIV SURG PATHOL,1 BARNES HOSP PLAZA,ST LOUIS,MO 63110. USAF,WILFORD HALL MED CTR,SAN ANTONIO,TX. NR 36 TC 39 Z9 40 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0002-9173 J9 AM J CLIN PATHOL JI Am. J. Clin. Pathol. PD JUL PY 1993 VL 100 IS 1 BP 27 EP 35 PG 9 WC Pathology SC Pathology GA LM750 UT WOS:A1993LM75000007 PM 8346734 ER PT J AU SMITH, BA GRIDER, DJ AF SMITH, BA GRIDER, DJ TI SUDDEN-DEATH IN A YOUNG-ADULT - SEQUELAE OF CHILDHOOD KAWASAKI-DISEASE SO AMERICAN JOURNAL OF EMERGENCY MEDICINE LA English DT Note DE KAWASAKI DISEASE; DEATH; SUDDEN; CARDIAC; CORONARY ANEURYSM RP SMITH, BA (reprint author), WILFORD HALL USAF MED CTR,DEPT EMERGENCY MED,2200 BERQUIST DR,SUITE NO 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 13 Z9 13 U1 0 U2 2 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0735-6757 J9 AM J EMERG MED JI Am. J. Emerg. Med. PD JUL PY 1993 VL 11 IS 4 BP 381 EP 383 DI 10.1016/0735-6757(93)90172-8 PG 3 WC Emergency Medicine SC Emergency Medicine GA LP441 UT WOS:A1993LP44100013 PM 8216521 ER PT J AU BLATT, SP PARKINSON, MD PACE, E HOFFMAN, P DOLAN, D LAUDERDALE, P ZAJAC, RA MELCHER, GP AF BLATT, SP PARKINSON, MD PACE, E HOFFMAN, P DOLAN, D LAUDERDALE, P ZAJAC, RA MELCHER, GP TI NOSOCOMIAL LEGIONNAIRES-DISEASE - ASPIRATION AS A PRIMARY-MODE OF DISEASE ACQUISITION SO AMERICAN JOURNAL OF MEDICINE LA English DT Article ID LEGIONELLA-PNEUMOPHILA SEROGROUP-1; CONTINUOUS MECHANICAL VENTILATION; RESPIRATORY-TRACT; POTABLE WATER; HOT WATER; PNEUMONIA; TRANSMISSION; COLONIZATION; INFECTIONS; DIAGNOSIS AB PURPOSE. Nosocomial Legionnaires, disease remains a significant problem with many unresolved questions regarding transmission of legionella organisms to patients. We performed a case-control and environmental study to identify risk factors and modes of transmission of Legionella infection during an outbreak of nosocomial Legionnaires` disease in a military medical center. PATIENT`S AND METHODS: During the calendar year 1989, 14 cases of nosocomial Legionnaires' disease were identified by active surveillance following the discovery of 2 culture-proven cases among organ transplant recipients. Four control patients were matched to each case by age, sex, and date of admission. Cases and controls were compared with respect to past medical history and hospital exposure variables. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated for matched variables. Environmental culturing of air and water supplies in and around the medical center was also performed. RESULTS: The case-control study revealed the following significant risk factors for the acquisition of nosocomial Legionnaires` disease: immunosuppressive therapy (OR = 32.7, CI = 4.5 to 302.6), nasogastric tube use (OR = 18.4, CI = 2.6 to 166.2), bedbathing (OR = 10.7, CI = 2.2 to 59.0), and antibiotic therapy (OR = 14.6, CI = 2.9 to 84.4). Shower use (OR = 0.1, CI = 0 to 0.4) appeared to be a negative risk factor. Water cultures revealed Legionella pneumophila serogroup 1, monoclonal antibody subtype Philadelphia (identical to all patient isolates) in the ground-water supply to the hospital 1 hot-water tank, and 15% of 85 potable water sites tested. Air sampling of cooling towers, hospital air intakes, and medical air and oxygen supplies were negative for Legionella organisms. CONCLUSIONS: This study confirms the importance of potable water in transmitting nosocomial Legionnaires' disease and suggests that the organism gains access to the hospital via external water supplies. The risk factors identified in this case-control study provide evidence that Legionnaires` disease may act as a superinfection in a nosocomial setting and is likely acquired by aspiration, similar to other nosocomial pneumonias. C1 WILFORD HALL USAF MED CTR,DEPT INFECT CONTROL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT MICROBIOL,LACKLAND AFB,TX 78236. ARMSTRONG LAB,DIV EPIDEMIOL,BROOKS AFB,TX. RP BLATT, SP (reprint author), WILFORD HALL USAF MED CTR,PSMI,DEPT INFECT DIS,LACKLAND AFB,TX 78236, USA. NR 40 TC 89 Z9 97 U1 0 U2 2 PU EXCERPTA MEDICA INC PI NEW YORK PA 245 WEST 17TH STREET, NEW YORK, NY 10011 SN 0002-9343 J9 AM J MED JI Am. J. Med. PD JUL PY 1993 VL 95 IS 1 BP 16 EP 22 DI 10.1016/0002-9343(93)90227-G PG 7 WC Medicine, General & Internal SC General & Internal Medicine GA LN568 UT WOS:A1993LN56800003 PM 8328493 ER PT J AU TRAN, CC LATHAM, RD SELF, DA FANTON, JW WHITE, CD OWENS, RW AF TRAN, CC LATHAM, RD SELF, DA FANTON, JW WHITE, CD OWENS, RW TI EFFECT OF UPRIGHT TILT ON VENTRICULAR VASCULAR COUPLING IN CHRONICALLY INSTRUMENTED PRIMATES SO AMERICAN JOURNAL OF PHYSIOLOGY LA English DT Article DE AORTIC INPUT IMPEDANCE; PULSATILE POWER; BABOON; HEAD-UP TILT ID REGIONAL WAVE TRAVEL; PERFORMANCE; REFLECTIONS; EXERCISE; SUPINE AB Studies of the hydraulic loading conditions on the heart in humans, especially pulsatile load, have primarily been limited to the supine state. Therefore, we have chosen a nonhuman primate model, the baboon, to assess left ventricular/vascular coupling in both supine and upright positions. Primate subjects were studied by catheterization under sedation and then after surgical implantation of transducers. This allowed the evaluation of postural stress in the chronically instrumented conscious baboon and then after light dissociative doses of ketamine. Basic hemodynamic variables were evaluated for baboons in supine and upright positions. Fourier analysis was applied to aortic pressure and flow to obtain input and characteristic impedance and the ratio of pulsatile (W(p)) to total (W(t)) left ventricular power (W(p)/W(t)). The aortic reflected, or backward, pressure was also calculated. Peripheral resistance increased (P = 0.01) and reflected pressure decreased (17.74 +/- 1.50 vs. 15.21 +/- 2 mmHg; P < 0.01) in upright subjects. Characteristic impedance and W(p)/W(t) were unchanged. Postoperatively, peripheral resistance increased (2,651 +/- 311 vs. 3,667 +/- 276; P < 0.05) and mean power and W(t) decreased (P < 0.01) without changes in reflected pressure. All variables were unchanged after light dissociative doses of ketamine. Thus there is no significant change in efficiency of left ventricular/vascular coupling formulated in terms of W(p)/W(t) or input impedance with postural stress. C1 ARMSTRONG LAB,AOCIY,AEROSP CARDIOVASC RES LAB,BROOKS AFB,TX 78236. CTR ETUD & RECH MED AEROSP,F-91223 BRETIGNY SUR ORGE,FRANCE. NR 26 TC 2 Z9 2 U1 0 U2 0 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0002-9513 J9 AM J PHYSIOL JI Am. J. Physiol. PD JUL PY 1993 VL 265 IS 1 BP H244 EP H251 PN 2 PG 8 WC Physiology SC Physiology GA LP432 UT WOS:A1993LP43200035 PM 8342640 ER PT J AU SMITH, DK AF SMITH, DK TI DORSAL CARPAL LIGAMENTS OF THE WRIST - NORMAL APPEARANCE ON MULTIPLANAR RECONSTRUCTIONS OF 3-DIMENSIONAL FOURIER-TRANSFORM MR-IMAGING SO AMERICAN JOURNAL OF ROENTGENOLOGY LA English DT Article AB OBJECTIVE. Three-dimensional Fourier transform MR imaging techniques can produce much thinner contiguous slices than are obtainable with standard two-dimensional Fourier transform MR imaging techniques. The improved spatial resolution and capabilities for interactive multiplanar displays allow improved visualization of small, complex anatomic structures such as the carpal ligaments. The purposes of this study were twofold: (1) to determine if the dorsal carpal ligaments can be visualized consistently with three-dimensional Fourier transform MR imaging techniques with multiplanar reconstructions and (2) to evaluate the size, shape, orientation, and right-to-left symmetry of the dorsal carpal ligaments in both wrists of 25 asymptomatic volunteers as a basis for future comparison when patients with suspected ligament injuries are seen. SUBJECTS AND METHODS. Both wrists of 25 asymptomatic volunteers were imaged with a three-dimensional Fourier transform MR imaging technique with commercially available equipment. A three-dimensional graphic workstation was used to reconstruct oblique two-dimensional images in the long axes of the radiotriquetral and dorsal intercarpal ligaments in all 50 wrists. The size, shape, orientation, and right-to-left symmetry were determined by the author using the reconstructed two-dimensional images. RESULTS. The radiotriquetral ligament and dorsal intercarpal ligament were visualized in all 50 wrists. The radiotriquetral ligament consisted of a single band arising from the distal radius (next to Lister's tubercle) in 84% and had dual origins from the styloid process of the radius and Lister's tubercle in 16%. The dorsal intercarpal ligament consisted of a single broad band in 14% of wrists, was a branched structure with separate triquetroscaphoid and triquetrotrapezial fascicles in 44%, had completely separate triquetroscaphoid and triquetrotrapezial fascicles in 38%, and had a triquetrotrapezial fascicle larger than the triquetroscaphoid fascicle in 4%. The dorsal intercarpal ligamentous anatomy was symmetric in 16 of 25 volunteers. CONCLUSION. The major dorsal carpal ligaments can be visualized consistently when using three-dimensional Fourier transform MR imaging techniques and multiplanar reconstructions. The dorsal carpal ligaments are usually symmetric in size and morphology; therefore, MR images of the contralateral wrist may be used for comparison with MR images of a patient's injured wrist. The size and shape of the dorsal carpal ligaments are described for comparison with findings in patients who have suspected ligamentous injuries. RP SMITH, DK (reprint author), WILFORD HALL USAF MED CTR,SGHRD,DEPT DIAGNOST RADIOL,2200 BERQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 11 TC 42 Z9 42 U1 0 U2 0 PU AMER ROENTGEN RAY SOC PI RESTON PA 1891 PRESTON WHITE DR, SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 SN 0361-803X J9 AM J ROENTGENOL JI Am. J. Roentgenol. PD JUL PY 1993 VL 161 IS 1 BP 119 EP 125 PG 7 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA LW015 UT WOS:A1993LW01500027 PM 8517289 ER PT J AU HALOW, KD FORD, EG AF HALOW, KD FORD, EG TI PULMONARY-EDEMA FOLLOWING POSTOPERATIVE LARYNGOSPASM - A CASE-REPORT AND REVIEW OF THE LITERATURE SO AMERICAN SURGEON LA English DT Review ID UPPER AIRWAY-OBSTRUCTION; PERFORMANCE; PRESSURE AB The pathophysiology of acute, negative-pressure pulmonary edema following post-anesthetic laryngospasm (PLPE) is unclear. We present a patient and review the literature to propose etiology and management. Nineteen reported patients (3 female, 16 male, aged 3 months to 60 years) with PLPE had undergone 10 otolaryngologic, three orthopedic, four skin/soft tissue, one intraabdominal, and one ophthalmologic procedures. Twelve patients (63%) had significant medical history. Initial intubation was performed without difficulty in 17 patients, there were no predisposing trends in anesthetic management, and post-anesthetic extubation was performed without difficulty in 18 patients. Thirteen patients developed laryngospasm in less than 2 minutes. Eight were ventilated with bag/mask, 15 required reintubation, and nine required paralysis. Onset of PLPE was less than 3 minutes in 12 patients; chest roentgenograms showed edema in 17 patients. Mechanical ventilation was required for less than 24 hours in all patients. PLPE cleared in less than 24 hours in most patients. Furosemide was administered in nine patients, digoxin in one, theophylline in two, and steroids in four patients. The precise pathophysiologic mechanism of PLPE is unclear despite numerous proposed mechanisms. PLPE resolves rapidly with short-term ventilatory support. Use of diuretics/airway dilators is variable, and their contribution to management is unclear. RP HALOW, KD (reprint author), USAF,MED CTR,KESSLER TECH TRAINING CTR,DEPT SURG,SGHS,ATC,KEESLER AFB,MS 39534, USA. NR 20 TC 27 Z9 29 U1 0 U2 1 PU SOUTHEASTERN SURGICAL CONGRESS PI ATLANTA PA 1776 PEACHTREE RD, NW., SUITE 410N, ATLANTA, GA 30309-2352 SN 0003-1348 J9 AM SURGEON JI Am. Surg. PD JUL PY 1993 VL 59 IS 7 BP 443 EP 447 PG 5 WC Surgery SC Surgery GA LL118 UT WOS:A1993LL11800011 PM 8323077 ER PT J AU JORDANWAGNER, DL WHISMAN, BA GOETZ, DW AF JORDANWAGNER, DL WHISMAN, BA GOETZ, DW TI CROSS-ALLERGENICITY AMONG CELERY, CUCUMBER, CARROT, AND WATERMELON SO ANNALS OF ALLERGY LA English DT Article ID POLLEN-ALLERGIC PATIENTS; BIRCH POLLEN; IGE ANTIBODIES; FOOD; SENSITIVITY; VEGETABLES; FRUITS; HYPERSENSITIVITY; REACTIVITY AB Cross-reactive allergens may be responsible for the clustering of food allergies seen in patients hypersensitive to fruits and vegetables. The pooled sera of six individuals were used to investigate cross-antigenicity among freshly prepared extracts of celery (Cy), cucumber (Cc), carrot (Ct), and watermelon (W). Each patient demonstrated clinical allergy to one or more study foods and, with the exception of Ct in two cases, had IgE to all four extracts by skin test or ELISA. In comparisons of each food against itself and the other three antigen 5, ELISA inhibition assays demonstrated allergenic similarity among Cy, Cc, Ct, and W by their similar slopes and 50% inhibition concentrations (2.0-7.3 mug/mL). In contrast, mountain cedar pollen (MC) produced at 50% inhibition of each food which was 10-fold higher (26.9-70.8 mug/mL) and had a flatter slope. Immunoblots of individual sera showed a 15-kD protein band common to all four foods. Pooled sera immunoblot inhibitions (100 and 5 mug protein/mL) demonstrated mutual inhibition of all bands in each of the four foods with the exception of a 28-kD protein of W uniquely inhibited by itself. We conclude that Cy, Cc, Ct, and W possess shared antigens that may account for clustering of these food allergies in patients. C1 WILFORD HALL USAF MED CTR,DEPT ALLERGY IMMUNOL,SGHMA,2200 BERQUIST DR,SUITE 1,LACKLAND AFB,TX 78236. NR 22 TC 34 Z9 35 U1 1 U2 2 PU AMER COLL ALLERGY ASTHMA IMMUNOLOGY PI ARLINGTON HTS PA 85 WEST ALGONQUIN RD SUITE 550, ARLINGTON HTS, IL 60005 SN 0003-4738 J9 ANN ALLERGY JI Ann. Allergy PD JUL PY 1993 VL 71 IS 1 BP 70 EP 79 PG 10 WC Allergy SC Allergy GA LN338 UT WOS:A1993LN33800014 PM 8328718 ER PT J AU MONTGOMERY, LD PARMET, AJ BOOHER, CR AF MONTGOMERY, LD PARMET, AJ BOOHER, CR TI BODY VOLUME CHANGES DURING SIMULATED MICROGRAVITY - AUDITORY CHANGES, SEGMENTAL FLUID REDISTRIBUTION, AND REGIONAL HEMODYNAMICS SO ANNALS OF BIOMEDICAL ENGINEERING LA English DT Article DE BED REST; MICROGRAVITY; FLUID REDISTRIBUTION; AUDIOMETRY ID MOTION SICKNESS; IMPEDANCE; PLETHYSMOGRAPHY; LIMB; PRESSURE AB Space adaptation syndrome (SAS), manifested by cephalad fluid shifts, spacial disorientation, nausea, and vomiting, is of varied expression and uncertain etiology. One theory is that fluid shift to the upper body alters the function of the vestibular apparatus to create an entity similar to Meniere's disease. Since clinical vestibular dysfunction syndromes are mirrored by altered cochlear function, this experiment was undertaken to study the relation between fluid redistribution and the auditory effects of initial antiorthostatic bed rest. Manual and bone audiometry, impedance tympanometry, and brain-stem evoked potentials were used to monitor auditory changes prior to, during, and following short term exposure to -6-degrees head down tilt. Impedance plethysmography was performed to assess the segmental and intracranial fluid redistribution and hemodynamic changes during short-term head down tilt simulated microgravity. Even though significant cephalad fluid shift produced marked intracranial congestion and the subjects exhibited SAS symptoms, no clinically significant changes in the auditory system could be detected. C1 LDM ASSOCIATES,SAN JOSE,CA. USAF,SCH AEROSP MED,BROOKS AFB,TX. ST LUKES OCCUPAT & AVIAT MED,KANSAS CITY,MO. NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. NASA,WASHINGTON,DC 20546. NR 45 TC 20 Z9 20 U1 0 U2 5 PU BLACKWELL SCIENCE INC PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0090-6964 J9 ANN BIOMED ENG JI Ann. Biomed. Eng. PD JUL-AUG PY 1993 VL 21 IS 4 BP 417 EP 433 DI 10.1007/BF02368634 PG 17 WC Engineering, Biomedical SC Engineering GA LP307 UT WOS:A1993LP30700011 PM 8214826 ER PT J AU BOLTON, JWR MAYER, JE AF BOLTON, JWR MAYER, JE TI UNUSUAL COMPLICATION OF TEMPORARY PACING WIRES IN CHILDREN - REPLY SO ANNALS OF THORACIC SURGERY LA English DT Letter RP BOLTON, JWR (reprint author), USAF,MED CTR,PSST,DEPT CARDIOTHORAC SURG,WILFORD HALL,2200 BERQUIST DR,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0003-4975 J9 ANN THORAC SURG JI Ann. Thorac. Surg. PD JUL PY 1993 VL 56 IS 1 BP 201 EP 201 PG 1 WC Cardiac & Cardiovascular Systems; Respiratory System; Surgery SC Cardiovascular System & Cardiology; Respiratory System; Surgery GA LM764 UT WOS:A1993LM76400051 ER PT J AU HAIGLER, BE SPAIN, JC AF HAIGLER, BE SPAIN, JC TI BIODEGRADATION OF 4-NITROTOLUENE BY PSEUDOMONAS SP STRAIN 4NT SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID ORTHO-NITROPHENOL; DEGRADATION; BACTERIA; TOLUENE AB A strain of Pseudomonas spp. was isolated from nitrobenzene-contaminated soil on 4-nitrotoluene as the sole source of carbon, nitrogen, and energy. The organism also grew on 4-nitrobenzyl alcohol, 4-nitrobenzaldehyde, and 4-nitrobenzoate. 4-Nitrobenzoate and ammonia were detected in the culture fluid of glucose-grown cells after induction with 4-nitrotoluene. Washed suspensions of 4-nitrotoluene- or 4-nitrobenzoate-grown cells oxidized 4-nitrotoluene, 4-nitrobenzaldehyde, 4-nitrobenzyl alcohol, and protocatechuate. Extracts from induced cells contained 4-nitrobenzaldehyde dehydrogenase, 4-nitrobenzyl alcohol dehydrogenase, and protocatechuate 4,5-dioxygenase activities. Under anaerobic conditions, cell extracts converted 4-nitrobenzoate or 4-hydroxylaminobenzoate to protocatechuate. Conversion of 4-nitrobenzoate to protocatechuate required NADPH. These results indicate that 4-nitrotoluene was degraded by an initial oxidation of the methyl group to form 4-nitrobenzyl alcohol, which was converted to 4-nitrobenzoate via 4-nitrobenzaldehyde. The 4-nitrobenzoate was reduced to 4-hydroxylaminobenzoate, which was converted to protocatechuate. A protocatechuate 4,5-dioxygenase catalyzed meta-ring fission of the protocatechuate. The detection of 4-nitrobenzaldehyde and 4-nitrobenzyl alcohol dehydrogenase and 4-nitrotoluene oxygenase activities in 4-nitrobenzoate-grown cells suggests that 4-nitrobenzoate is an inducer of the 4-nitrotoluene degradative pathway. C1 AL EQ OL,139 BARNES DR,TYNDALL AFB,FL 32403. NR 33 TC 84 Z9 88 U1 2 U2 6 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD JUL PY 1993 VL 59 IS 7 BP 2239 EP 2243 PG 5 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA LL310 UT WOS:A1993LL31000037 PM 8357257 ER PT J AU WIATRAK, BJ ALBERT, DM HOLMES, DK COTTON, RT AF WIATRAK, BJ ALBERT, DM HOLMES, DK COTTON, RT TI CARTILAGE GRAFT EPITHELIALIZATION - A PRELIMINARY-STUDY USING A GOAT MODEL SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article ID ACQUIRED SUBGLOTTIC STENOSIS; LARYNGOTRACHEAL RECONSTRUCTION; CANINE MODEL AB Objective.-To determine if the presence of a laryngeal stent adversely affects the epithelialization of an anterior costal cartilage graft. Design.-Twelve goats underwent laryngotracheoplasty using an anterior costal cartilage graft. No stent was used in six animals, and a modified endotracheal tube stent was used in the other six. The degree of epithelialization in each group was compared histologically, as well as other histologic criteria (epithelial metaplasia, cilia formation, and inflammatory cell infiltration). Setting.-Children's Hospital Medical Center of Cincinnati (Ohio) Medical Research Building. Patients and Other Participants.-No human subjects were used in this study. Main Outcome Measures.-Qualitative histologic analysis of cartilage graft epithelialization, epithelial metaplasia, cilia formation, and inflammatory cell infiltration was performed. The stent vs no-stent groups were compared histologically. Results.-In the stented group, one cartilage graft extruded, while five remained in place. All of the no-stent cartilage grafts remained in place. A trend was observed in the no-stent group toward increased cartilage graft epithelialization and cilia formation, while there was a decrease in epithelial metaplasia and infiltration by inflammatory cells. Conclusions.-Although the study population was small, the presence of a laryngeal stent tended to predispose the graft to increased inflammation and epithelial metaplasia and may adversely affect cartilage graft epithelialization. The goat may be an adequate animal model for laryngotracheal reconstruction and, possibly, subglottic stenosis. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. CHILDRENS HOSP MED CTR,CINCINNATI,OH 45229. HOSP SICK CHILDREN,LONDON WC1N 3JH,ENGLAND. UNIV MICHIGAN,MED CTR,ANN ARBOR,MI 48109. NR 24 TC 12 Z9 12 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0886-4470 J9 ARCH OTOLARYNGOL JI Arch. Otolaryngol. Head Neck Surg. PD JUL PY 1993 VL 119 IS 7 BP 777 EP 781 PG 5 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA LL826 UT WOS:A1993LL82600013 PM 8318208 ER PT J AU SHAHED, AR BARBER, J WERCHAN, PM AF SHAHED, AR BARBER, J WERCHAN, PM TI ACCELERATION-INDUCED EFFECTS ON BABOON BLOOD-CHEMISTRY SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Gravity-induced loss of consciousness (G-LOC) is known to have occurred in pilots since the early 1920's. Most of the research in this area has shown that G-LOC occurs due to a decrease in cerebral blood pressure and a concomitant reduction in brain perfusion. Since a reduction in cerebral blood flow can cause transient hypoxia, it is important to study the cerebral metabolism during high +Gz exposure. One component of these studies should include measurements of substrate availability and degradative products. In the present study, adult baboons were given multiple high +Gz exposures (2 to 6) using the Armstrong Laboratory human centrifuge. Venous blood was collected by an automatic syringe withdrawal pump before, during and after centrifuge exposures. The concentration of blood gases, glucose and lactate tended to decrease during the centrifuge exposure followed by an increase after the run. Total creatine kinase activity in serum was not significantly altered. These results suggest that during +Gz exposure, anaerobic glycolysis is stimulated resulting in elevated lactate production due to a reduction in cerebral blood flow (CBF). The elevated tissue lactate is released into the central circulation upon resumption of normal CBF (after the termination of centrifuge run). Therefore, the observed decrease in lactate concentration during the run may result from a lag in the release of tissue lactate into the blood due to a reduction in CBF. It is speculated that at high +6 Gz, G-LOC may occur as a protective response to reduce the brain metabolic rate, to maintain energy levels and to prevent severe cellular acidosis. However, further research is needed to establish the relationship between the brain's energy status and the onset of G-LOC. C1 OPERAT TECHNOL CORP,SAN ANTONIO,TX. KRUG LIFE SCI INC,SAN ANTONIO,TX. ARMSTRONG LAB,CREW SYST DIRECTORATE,DIV CREW TECHNOL,FLIGHT MOTION EFFECTS BRANCH,BROOKS AFB,TX. NR 13 TC 2 Z9 3 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1993 VL 64 IS 7 BP 631 EP 635 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LK879 UT WOS:A1993LK87900008 PM 8357317 ER PT J AU RUSH, WL DOOLEY, DP BLATT, SP DREHNER, DM AF RUSH, WL DOOLEY, DP BLATT, SP DREHNER, DM TI COCCIDIOIDOMYCOSIS - A PERSISTENT THREAT TO DEPLOYED POPULATIONS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB The world-wide deployability of aircrew members exposes them to a peculiar array of medical problems. Non-immune populations, upon deployment to endemic areas, may present to the deployed flight surgeon with acute, poorly recognizable syndromes, such as acute coccidioidomycosis. Alternatively, the acquisition of the chronic progressive form of coccidioidomycosis in endemic areas may be a problem for the flight surgeon, who may be faced with a poorly recognizable syndrome which first manifests itself weeks to months after the crewmember's return from deployment. We describe three cases of coccidioidomycosis in service members that highlight the difficulty in the diagnosis of this disease. These cases prompted an epidemiologic survey of recent cases of coccidioidomycosis among Air Force beneficiaries, presented here, to better define the impact of this disease on personnel assigned to endemic areas. A brief discussion of the epidemiologic and clinical features of the disease and of the aeromedical disposition of the aviator is presented. C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. NR 24 TC 11 Z9 11 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1993 VL 64 IS 7 BP 653 EP 657 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LK879 UT WOS:A1993LK87900013 PM 8357322 ER PT J AU VOGE, VM TOLAN, G AF VOGE, VM TOLAN, G TI HAZARDOUS MATERIALS INCIDENTS IN MILITARY AIRCRAFT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB We evaluated 10 years of reported hazardous cargo incident information from the U.S. Air Force and Naval Safety Centers. In this first of two papers describing the hazardous cargo problems reported by the two services, we describe types of aircraft and types of hazardous cargo involved in incidents not causing aircraft mishaps. Normally, hazardous cargo must be manifested as such and no passengers are allowed on such flights. Unauthorized hazardous cargo was found on military aircraft carrying passengers. The most common problem was fuel spills or fumes. The most frequent cause of a hazardous cargo incident was improper manifest of same. Improvements are recommended for the incompatible or inconsistent hazardous cargo incident reporting systems, in order to improve prevention of hazardous cargo incidents. C1 ARMSTRONG LAB,SCI CLIN,BROOKS AFB,TX. NR 1 TC 1 Z9 1 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1993 VL 64 IS 7 BP 658 EP 661 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LK879 UT WOS:A1993LK87900014 PM 8357323 ER PT J AU VOGE, VM TOLAN, G AF VOGE, VM TOLAN, G TI PHYSIOLOGICAL PROBLEMS CAUSED BY TRANSPORTATION OF HAZARDOUS CARGO IN MILITARY AIRCRAFT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB This is the second of two articles describing reported incidents involving hazardous cargo on U.S. military aircraft over a 10-year period. In this article, we describe the various physiological responses reported on the incident reports. These physiological incidents may have involved either the aircrew, the passengers, or both. We also list the substances that caused the problems. Physiological responses ranged from nausea and light-headedness to loss of consciousness. We discuss why flights involving a physiological incident may not have been aborted. The present military hazardous cargo incident reporting system is deficient in that there appears to be no requirement for reporting whether passengers were on board the incident aircraft, or whether passengers or aircrew suffered physiological responses to various toxic substances. C1 ARMSTRONG LAB,SCI CLIN,BROOKS AFB,TX. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1993 VL 64 IS 7 BP 662 EP 665 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LK879 UT WOS:A1993LK87900015 PM 8357324 ER PT J AU WAECKER, NJ ASCHER, DP ROBB, ML MORIARTY, R KORBER, M RICKMAN, WJ BUTZIN, CA FISCHER, GW KUSKIE, M VINCENT, J GOLDBERG, D OTTOLINI, M CIESLAK, T HEMMING, V AF WAECKER, NJ ASCHER, DP ROBB, ML MORIARTY, R KORBER, M RICKMAN, WJ BUTZIN, CA FISCHER, GW KUSKIE, M VINCENT, J GOLDBERG, D OTTOLINI, M CIESLAK, T HEMMING, V TI AGE-ADJUSTED CD4+ LYMPHOCYTE PARAMETERS IN HEALTHY-CHILDREN AT RISK FOR INFECTION WITH THE HUMAN-IMMUNODEFICIENCY-VIRUS SO CLINICAL INFECTIOUS DISEASES LA English DT Note AB Values for CD4+ lymphocytes are reported to vary by age. We evaluated an ethnically diverse population of healthy children at risk for human immunodeficiency virus infection to establish normal ranges for age-adjusted CD4+ lymphocyte parameters. We identified a threshold of approximately 30% CD4+ lymphocytes which corresponded to a 5th percentile for all ages. It is important that no significant differences in absolute CD4+ lymphocyte counts on the basis of ethnic group were found. C1 USN HOSP, DEPT PEDIAT, SAN DIEGO, CA 92134 USA. WILFORD HALL USAF MED CTR, SAN ANTONIO, TX USA. NATL NAVAL MED CTR, BETHESDA, MD 20814 USA. MADIGAN ARMY MED CTR, TACOMA, WA 98431 USA. UNIFORMED SERV UNIV HLTH SCI, BETHESDA, MD 20814 USA. RP WAECKER, NJ (reprint author), USN HOSP, DEPT CLIN INVEST, SAN DIEGO, CA 92134 USA. NR 9 TC 18 Z9 18 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD JUL PY 1993 VL 17 IS 1 BP 123 EP 125 PG 3 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA LJ749 UT WOS:A1993LJ74900022 PM 8102556 ER PT J AU MOORMAN, T AF MOORMAN, T TI THE SPACE COMPONENT OF AEROSPACE SO COMPARATIVE STRATEGY LA English DT Article RP MOORMAN, T (reprint author), USAF,SPACE COMMAND,WASHINGTON,DC 20330, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0149-5933 J9 COMP STRATEGY PD JUL-SEP PY 1993 VL 12 IS 3 BP 251 EP 255 DI 10.1080/01495939308402924 PG 5 WC International Relations; Political Science SC International Relations; Government & Law GA LZ960 UT WOS:A1993LZ96000002 ER PT J AU JAMSHIDI, M BARAK, D BAUGH, S VADIEE, N AF JAMSHIDI, M BARAK, D BAUGH, S VADIEE, N TI COMPUTATIONAL AND EXPERIMENTAL ENVIRONMENTS FOR FUZZY-LOGIC AND CONTROL SO COMPUTERS & ELECTRICAL ENGINEERING LA English DT Article AB Fuzzy logic and fuzzy expert control systems have been one of the most active research and development areas of artificial intelligence in recent years. Thanks to tremendous technical advances and many industrial applications in Japan, fuzzy logic enjoys an unprecedented popularity. An equally important issue is the educational need for training the students of engineering and science for both theory and experiments with fuzzy logic. In this paper one such educational experience is described. The paper is organized as follows: Section 2 will provide some computational and simulation experience, while the experimental experiences for real-time fuzzy control will be given in the next section. Conclusions and future work will be given next. A number of examples will be given to illustrate the efforts. C1 UNIV NEW MEXICO,DEPT ELECT & COMP ENGN,CAD LAB INTELLIGENT & ROBOT SYST,ALBUQUERQUE,NM 87131. USAF,WEAPONS PHILLIPS LAB,WASHINGTON,DC 20330. UNIV ILLINOIS,URBANA,IL 61801. SHIRAZ UNIV,SHIRAZ,IRAN. UNIV STUTTGART,W-7000 STUTTGART 80,GERMANY. TECH UNIV DENMARK,DK-2800 LYNGBY,DENMARK. GM CORP,RES LABS,DETROIT,MI 48202. GEORGE WASHINGTON UNIV,WASHINGTON,DC 20052. NATL INST STAND & TECHNOL,BOULDER,CO. UNIV VIRGINIA,CHARLOTTESVILLE,VA 22903. NR 5 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7906 J9 COMPUT ELECTR ENG JI Comput. Electr. Eng. PD JUL PY 1993 VL 19 IS 4 BP 289 EP 298 DI 10.1016/0045-7906(93)90051-R PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Interdisciplinary Applications; Engineering, Electrical & Electronic SC Computer Science; Engineering GA LC503 UT WOS:A1993LC50300005 ER PT J AU RADUENZ, BD SUTER, BW CHRISTENSEN, ER AF RADUENZ, BD SUTER, BW CHRISTENSEN, ER TI ANALYSIS OF AN ADA BASED VERSION OF GLASSMAN GENERAL N-POINT FAST FOURIER-TRANSFORM SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article AB An Ada based version of Ferguson's FORTRAN program to compute the general N point fast Fourier transform is provided. Source codes for the two programs are compared and it is demonstrated that the execution time of the Ada program is comparable to that of the corresponding FORTRAN program. RP RADUENZ, BD (reprint author), USAF, INST TECHNOL, WRIGHT PATTERSON AFB, OH 45433 USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 EI 1873-7668 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD JUL PY 1993 VL 26 IS 2 BP 61 EP 65 DI 10.1016/0898-1221(93)90322-M PG 5 WC Mathematics, Applied SC Mathematics GA LG473 UT WOS:A1993LG47300007 ER PT J AU HOLCOMB, LE NEIMEYER, RA MOORE, MK AF HOLCOMB, LE NEIMEYER, RA MOORE, MK TI PERSONAL MEANINGS OF DEATH - A CONTENT-ANALYSIS OF FREE-RESPONSE NARRATIVES SO DEATH STUDIES LA English DT Article ID ANXIETY; THREAT AB Despite the proliferation of research on death attitudes, relatively little attention has been paid to idiosyncratic meanings of death, as opposed to the large volume of work on death anxiety using standardized measures. This study applied a reliable coding system to narrative descriptions of the meaning of death contributed by 504 respondents. Content analysis of these free-form responses suggested that constructions of death differed significantly depending on the subjects sex, health status, previous history of suicide attempts or ideation, and death fear or threat. Most importantly, respondents professing a coherent ''personal philosophy of death'' viewed death as more purposeful, expected, and involving some form of continued existence, whereas those without such a philosophy wrote narratives implying a negative evaluation, low acceptance, and low understanding of death. Modifications of the coding system for use with free-response data are suggested, along with applications of the method to future research. C1 MEMPHIS STATE UNIV,DEPT PSYCHOL,MEMPHIS,TN 38152. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. NR 27 TC 31 Z9 32 U1 3 U2 8 PU HEMISPHERE PUBL CORP PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0748-1187 J9 DEATH STUD JI Death Stud. PD JUL-AUG PY 1993 VL 17 IS 4 BP 299 EP 318 DI 10.1080/07481189308252627 PG 20 WC Psychology, Multidisciplinary; Social Issues; Social Sciences, Biomedical SC Psychology; Social Issues; Biomedical Social Sciences GA LP030 UT WOS:A1993LP03000001 ER PT J AU BECK, DE KARULF, RE AF BECK, DE KARULF, RE TI LAPAROSCOPIC-ASSISTED FULL-THICKNESS ENDOSCOPIC POLYPECTOMY SO DISEASES OF THE COLON & RECTUM LA English DT Note DE LAPAROSCOPY; POLYPECTOMY; ENDOSCOPY; SURGICAL TECHNIQUE AB PURPOSE: To describe the procedure for endoscopically removing sessile colonic Polyps with laparoscopic assistance. METHODS: Technique description and retrospective review of experience. RESULTS: The technique has been used to successfully remove polypoid colonic lesions in three patients. CONCLUSIONS: Laparoscopic-assisted polypectomy allows complete excision of moderate-sized sessile polyps and may spare selected patients a colonic resection. C1 ALTON OCHSNER MED FDN & OCHSNER CLIN,NEW ORLEANS,LA 70121. USAF,MED CTR,DEPT GEN SURG,LACKLAND AFB,TX 78236. RP BECK, DE (reprint author), ALTON OCHSNER MED FDN & OCHSNER CLIN,DEPT COLON & RECTAL SURG,1514 JEFFERSON HIGHWAY,NEW ORLEANS,LA 70121, USA. RI Beck, David/A-5503-2011 NR 2 TC 39 Z9 39 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0012-3706 J9 DIS COLON RECTUM JI Dis. Colon Rectum PD JUL PY 1993 VL 36 IS 7 BP 693 EP 695 DI 10.1007/BF02238598 PG 3 WC Gastroenterology & Hepatology; Surgery SC Gastroenterology & Hepatology; Surgery GA LM152 UT WOS:A1993LM15200011 PM 8348855 ER PT J AU CLIFTON, TE WEFER, FL AF CLIFTON, TE WEFER, FL TI DIRECT VOLUME DISPLAY DEVICES SO IEEE COMPUTER GRAPHICS AND APPLICATIONS LA English DT Article C1 MITRE CORP,WASHINGTON,DC 20389. USAF,WASHINGTON,DC 20330. NR 23 TC 11 Z9 11 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 0272-1716 J9 IEEE COMPUT GRAPH JI IEEE Comput. Graph. Appl. PD JUL PY 1993 VL 13 IS 4 BP 57 EP 65 DI 10.1109/38.219452 PG 9 WC Computer Science, Software Engineering SC Computer Science GA LJ999 UT WOS:A1993LJ99900011 ER PT J AU CLOUTIER, JR LIN, CF YANG, C AF CLOUTIER, JR LIN, CF YANG, C TI ENHANCED VARIABLE DIMENSION FILTER FOR MANEUVERING TARGET TRACKING SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID INPUT ESTIMATION AB An enhancement of the variable dimension (VD) filter [1] for maneuvering target tracking is presented. The use of measurement concatenation, a procedure whereby fast sampled measurements are stacked while maintaining their proper relationships with the states, leads to significant reduction in estimation error by low processing rate algorithms. The use of double decision logic (DDL) for the maneuver onset and ending detection as well as appropriate procedures for reinitialization of the estimation filters result in improved maneuver detection and filter adaptation. Simulation results show the performance of the proposed enhanced variable dimension (EVD) filter. C1 USAF,ARMANENT DIRECTORATE,WRIGHT LAB,FLIGHT CONTROL TECHNOL SECT,EGLIN AFB,FL 32542. AMER GNC CORP,TECH STAFF,CHATSWORTH,CA 91311. RP CLOUTIER, JR (reprint author), USAF,ARMANENT DIRECTORATE,WRIGHT LAB,INERTIAL TECHNOL SECT,EGLIN AFB,FL 32542, USA. NR 12 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 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JUL PY 1993 VL 29 IS 3 BP 786 EP 797 DI 10.1109/7.220930 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA LM176 UT WOS:A1993LM17600017 ER PT J AU PACHTER, M CHANDLER, PR AF PACHTER, M CHANDLER, PR TI UNIVERSAL LINEARIZATION CONCEPT FOR EXTENDED KALMAN FILTERS SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article AB A careful evaluation of the performance of a universal linearization concept-based extended Kalman filter is made by experimentally comparing its Performance to that of a classical, linearization based, extended Kalman filter, in the case of a simple nonlinear dynamical system. In this work, instances of superior universal linearization concept-based extended Kalman filter estimation performance, compared with its classical, linearization by differentiation-based extended Kalman filter counterpart, have been discerned. Thus, in the case of nonlinear dynamics and linear measurements, the estimation advantage of the universal linearization concept-based extended Kalman filter, compared with that of the classical extended Kalman filter, increases when the process noise intensity decreases; conversely, in the case of linear dynamics and nonlinear measurements, the estimation accuracy advantage of the universal linearization concept-based extended Kalman filter, compared with that of the classical extended Kalman filter, increases when the process noise intensity increases. Furthermore, compared with the classical extended Kalman filter, the universal linearization concept-based extended Kalman filter is more robust with respect to variations in the dynamics' parameters, in both linear and nonlinear dynamics cases. The advantage of the universal linearization concept-based extended Kalman filter, compared with the classical extended Kalman filter, is more pronounced in the case of small process noise intensity. Encouraged by the promising experimental results, in this paper a general and novel universal linearization concept-based extended Kalman filter is derived. C1 WRIGHT PATTERSON RES & DEV CTR,WRIGHT PATTERSON AFB,OH 45433. RP PACHTER, M (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 1 TC 17 Z9 31 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 JUL PY 1993 VL 29 IS 3 BP 946 EP 962 DI 10.1109/7.220942 PG 17 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA LM176 UT WOS:A1993LM17600030 ER PT J AU PYATI, VP AF PYATI, VP TI COMPUTATION OF THE CIRCULAR ERROR-PROBABILITY (CEP) INTEGRAL SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Letter AB A substantial portion of the findings of Gillis [1] appearing recently in these transactions have been reported in open literature nearly 45 years ago, using far simpler methods. An expression for the circular error probability (CEP) which takes into account the correlation between two jointly Gaussian random variables (an aspect overlooked by Gillis) is derived and numerical results are presented. For all practical purposes, it is found that the influence of the correlation coefficient on the CEP is not particularly strong. RP PYATI, VP (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 3 Z9 3 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JUL PY 1993 VL 29 IS 3 BP 1023 EP 1024 DI 10.1109/7.220962 PG 2 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA LM176 UT WOS:A1993LM17600037 ER PT J AU CHAIKEN, SR AF CHAIKEN, SR TI 2 MODELS FOR AN INSPECTION TIME PARADIGM - PROCESSING DISTRACTION AND PROCESSING SPEED VERSUS PROCESSING SPEED AND ASYMPTOTIC STRENGTH SO INTELLIGENCE LA English DT Article ID WORKING-MEMORY; INTELLIGENCE; SIZE AB In an inspection time (IT) paradigm, the IT stimulus was presented at six exposure durations varying from 16 to 100 ms and subject accuracy was observed for each duration. The exposure time-accuracy functions were then modeled in terms of a processing-distraction/processing-speed (PDPS) approach and a pure processing-speed approach based on a restricted version of McClelland's (1979) ''cascade'' framework. Neither of the two-parameter approaches accounted for the observed individual time-accuracy functions that, on average, asymptote below 160%. However, both models fit if the performance asymptote was allowed to vary between subjects, either from differences in random errors introduced into IT responding (for PDPS) or from differences in the memory strength for IT stimuli among subjects (for cascade). Study 2 favored the memory-strength interpretation of the asymptote because the asymptote parameter correlated with fluency on a skill that was expected (from theory) to be limited by memory strength. RP CHAIKEN, SR (reprint author), ARMSTRONG LAB,HRMIL,BROOKS AFB,TX 78235, USA. NR 23 TC 15 Z9 15 U1 0 U2 2 PU ABLEX PUBL CORP PI NORWOOD PA 355 CHESTNUT ST, NORWOOD, NJ 07648 SN 0160-2896 J9 INTELLIGENCE JI Intelligence PD JUL-SEP PY 1993 VL 17 IS 3 BP 257 EP 283 DI 10.1016/0160-2896(93)90002-M PG 27 WC Psychology, Multidisciplinary SC Psychology GA LZ827 UT WOS:A1993LZ82700002 ER PT J AU CHAN, YP AF CHAN, YP TI FACILITY LAYOUT AND LOCATION - AN ANALYTICAL APPROACH, 2ND EDITION - FRANCIS,RL, MCGINNIS,LF, WHITE,JA SO INTERFACES LA English DT Book Review RP CHAN, YP (reprint author), USAF,INST TECHNOL,DEPT OPERAT SCI ENS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 1 Z9 1 U1 1 U2 4 PU INST OPERATIONS RESEARCH MANAGEMENT SCIENCES PI LINTHICUM HTS PA 901 ELKRIDGE LANDING RD, STE 400, LINTHICUM HTS, MD 21090-2909 SN 0092-2102 J9 INTERFACES JI Interfaces PD JUL-AUG PY 1993 VL 23 IS 4 BP 125 EP 127 PG 3 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA LT655 UT WOS:A1993LT65500014 ER PT J AU CHAN, YP AF CHAN, YP TI READINGS IN MULTIPLE CRITERIA DECISION AID - COSTA,BE SO INTERFACES LA English DT Book Review RP CHAN, YP (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU INST OPERATIONS RESEARCH MANAGEMENT SCIENCES PI LINTHICUM HTS PA 901 ELKRIDGE LANDING RD, STE 400, LINTHICUM HTS, MD 21090-2909 SN 0092-2102 J9 INTERFACES JI Interfaces PD JUL-AUG PY 1993 VL 23 IS 4 BP 134 EP 136 PG 3 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA LT655 UT WOS:A1993LT65500020 ER PT J AU WILLIAMS, DC ORJI, LN STONE, DA AF WILLIAMS, DC ORJI, LN STONE, DA TI KINETICS OF THE REACTIONS OF OH RADICALS WITH SELECTED ACETATES AND OTHER ESTERS UNDER SIMULATED ATMOSPHERIC CONDITIONS SO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS LA English DT Article ID HYDROXYL RADICALS; RATE CONSTANTS AB The relative hydroxyl radical reaction rate constants from the simulated atmospheric oxidation of selected acetates and other esters have been measured. Reactions were carried out at 297 +/- 2 K in 100-liter FEP Teflon(R)-film bags. The OH radicals were generated from the photolysis of methyl nitrite in pure air. Using a rate constant of 2.63 x 10(-11) cm3 molecule 1 s-1 for the reaction of OH radicals with propene, the principal reference organic compound-1 the rate constants (X 10(12) cm3 molecule-1 s-1) obtained for the acetates and esters used in this study are: [GRAPHICS] Error limits represent 2sigma from linear least-squares analysis of data. A linear correlation was observed for a plot of the measured relative rate constants vs. the number of CH2 groups per molecule of the following acetates: methyl acetate, ethyl acetate, n-propyl acetate, butyl acetate, and pentyl acetate. C1 MANTECH ENVIRONM TECHNOL INC,TYNDALL AFB,FL 32403. USAF,CIVIL ENGN SUPPORT AGCY,CIVIL ENGN LAB,DIV ENVIRON,TYNDALL ABF,FL 32403. NR 10 TC 30 Z9 31 U1 0 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0538-8066 J9 INT J CHEM KINET JI Int. J. Chem. Kinet. PD JUL PY 1993 VL 25 IS 7 BP 539 EP 548 DI 10.1002/kin.550250704 PG 10 WC Chemistry, Physical SC Chemistry GA LG944 UT WOS:A1993LG94400003 ER PT J AU MATIKAS, TE KARPUR, P AF MATIKAS, TE KARPUR, P TI ULTRASONIC REFLECTIVITY TECHNIQUE FOR THE CHARACTERIZATION OF FIBER-MATRIX INTERFACE IN METAL-MATRIX COMPOSITES SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB An ultrasonic plane wave reflected by a cylindrical fiber embedded in a homogeneous isotropic matrix is modeled. The model calculates the ''back-reflection'' coefficient by taking in to account the properties of the fiber and the matrix, the ultrasonic wavelength, the angle of incidence, and a coefficient called ''shear stiffness coefficient'' which characterizes the elastic behavior between the fiber and the matrix. Results obtained from the theoretical analysis for a model metal matrix composite system are shown. The theory developed in this paper and some of the results obtained are equally applicable in ceramic matrix fiber reinforced composites. C1 UNIV DAYTON,RES INST,DIV STRUCT INTEGR,DAYTON,OH 45469. RP MATIKAS, TE (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLLP,WRIGHT PATTERSON AFB,OH 45433, USA. RI Matikas, Theodore/I-2803-2012 NR 11 TC 28 Z9 28 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUL 1 PY 1993 VL 74 IS 1 BP 228 EP 236 DI 10.1063/1.354150 PG 9 WC Physics, Applied SC Physics GA LK469 UT WOS:A1993LK46900034 ER PT J AU LOOK, DC WALTERS, DC ROBINSON, GD SIZELOVE, JR MIER, MG STUTZ, CE AF LOOK, DC WALTERS, DC ROBINSON, GD SIZELOVE, JR MIER, MG STUTZ, CE TI ANNEALING DYNAMICS OF MOLECULAR-BEAM EPITAXIAL GAAS GROWN AT 200-DEGREES-C SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID BAND AB By separating a 2-mum-thick molecular-beam-epitaxial GaAs layer grown at 200-degrees-C from its 650-mum-thick substrate, we have been able to obtain accurate Hall-effect and conductivity data as functions of annealing temperature from 300 to 600-degrees-C. At a measurement temperature of 300 K, analysis confirms that hopping conduction is much stronger than band conduction for all annealing temperatures. However, at higher measurement temperatures (up to 500 K), the band conduction becomes comparable, and a detailed analysis yields the donor and acceptor concentrations and the donor activation energy. Also, an independent absorption study yields the total and charged As(Ga) concentrations. Comparisons of all of these quantities as a function of annealing temperature T(A) show a new feature of the annealing dynamics, namely, that the dominant acceptor (probably V(Ga) related) strongly decreases and then increases as T(A) is increased from 350 to 450-degrees-C. Above 450-degrees-C, N(D), N(A), and [As(Ga)] all decrease, as is known from previous studies. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WL ELRA,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 10 TC 63 Z9 63 U1 1 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 JUL 1 PY 1993 VL 74 IS 1 BP 306 EP 310 DI 10.1063/1.354108 PG 5 WC Physics, Applied SC Physics GA LK469 UT WOS:A1993LK46900046 ER PT J AU LOOK, DC STUTZ, CE BOZADA, CA AF LOOK, DC STUTZ, CE BOZADA, CA TI ANALYTICAL 2-LAYER HALL ANALYSIS - APPLICATION TO MODULATION-DOPED FIELD-EFFECT TRANSISTORS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID PARALLEL CONDUCTION; HETEROSTRUCTURES; MOBILITY; HETEROJUNCTIONS AB The classical magnetic-field-dependent Hall coefficient and conductivity equations are inverted to give the mobilities mu1 and mu2 and carrier concentrations n1 (or p1) and n2 (or p2) in two degenerate bands. The two-band solution holds for arbitrary magnetic-field strength as long as quantum effects can be ignored (i.e., kT > HBAReB/m*), and it is argued that the analysis can also be applied to two separate layers up to reasonable field strengths. The results are used to determine the two-dimensional electron gas mobility and carrier concentration in a modulation-doped field-effect transistor with a highly doped cap layer. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WL ELR,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 15 TC 26 Z9 26 U1 3 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUL 1 PY 1993 VL 74 IS 1 BP 311 EP 314 DI 10.1063/1.354109 PG 4 WC Physics, Applied SC Physics GA LK469 UT WOS:A1993LK46900047 ER PT J AU WALTERS, TJ CONSTABLE, SH AF WALTERS, TJ CONSTABLE, SH TI INTERMITTENT COLD-EXPOSURE CAUSES A MUSCLE-SPECIFIC SHIFT IN THE FIBER-TYPE COMPOSITION IN RATS SO JOURNAL OF APPLIED PHYSIOLOGY LA English DT Article DE ACCLIMATION; HYPOTHERMIA; MITOCHONDRIA; METABOLISM ID THYROID-HORMONE; SHORTENING VELOCITY; MYOFIBRILLAR ATPASE; SKELETAL-MUSCLE; TEMPERATURE; ACCLIMATION; DEPENDENCE AB We examined the effect of long-term intermittent cold exposure on the fiber type composition of the predominantly type I soleus and the predominantly type IIb extensor digitorum longus (EDL) muscles of rats. Cold exposure was accomplished by submerging the rats in shoulder-deep water, maintained at 20 +/- 0.5-degrees-C, for 1 h/day, 5 days/wk, for less-than-or-equal-to 19 wk. The efficacy of the treatment was tested by subjecting both groups to 20-degrees-C water for 45 min while rectal temperature (T(re)) and O2 consumption (Vo2) were measured. The cold-exposed group displayed a 22% smaller reduction in T(re) (P < 0.05) at the end of the exposure and 23% greater Vo2 (P < 0.05) during the same period. Fiber type composition was determined using routine histochemical methods for myosin-adenosinetriphosphatase. In the soleus muscle of the cold-exposed rats, the number of type IIa fibers increased 156% (P < 0.05) and the number of type I fibers decreased 24% (P < 0.05). Cold exposure had no significant influence on the fiber type composition of the EDL muscle. Cold exposure resulted in an increase in citrate synthase activity of 20 and 22% in the soleus and EDL muscles, respectively (P < 0.05). The present study demonstrates that intermittent cold exposure induces a type I-to-type IIa transformation in the soleus muscle while having no influence on the EDL muscle. C1 SYST RES LABS INC,BROOKS AFB,TX 78235. RP WALTERS, TJ (reprint author), USAF,OEDR,ARMSTRONG LAB,BLDG 1182,BROOKS AFB,TX 78235, USA. NR 24 TC 12 Z9 12 U1 0 U2 1 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 8750-7587 J9 J APPL PHYSIOL JI J. Appl. Physiol. PD JUL PY 1993 VL 75 IS 1 BP 264 EP 267 PG 4 WC Physiology; Sport Sciences SC Physiology; Sport Sciences GA LN649 UT WOS:A1993LN64900036 PM 8376271 ER PT J AU BRYAN, CL LEWIS, RE OWENS, SL EMANUEL, B JENKINSON, SG AF BRYAN, CL LEWIS, RE OWENS, SL EMANUEL, B JENKINSON, SG TI ALLOPURINOL INHIBITION OF NEUTROPHILIC ALVEOLAR RESPONSE DURING HYPEROXIA SO JOURNAL OF APPLIED PHYSIOLOGY LA English DT Article DE OXYGEN TOXICITY; LUNG INFLAMMATION; RATS; BRONCHOALVEOLAR LAVAGE FLUID; FREE RADICALS ID RESPIRATORY-DISTRESS SYNDROME; PHORBOL-MYRISTATE ACETATE; LUNG INJURY; POLYMORPHONUCLEAR LEUKOCYTES; OXYGEN-TOXICITY; FREE-RADICALS; GRANULOCYTES; INFLAMMATION; ISCHEMIA; SHEEP AB Allopurinol is a potent xanthine oxidase inhibitor that has been administered to animals to protect tissues from oxidant injury. We hypothesized that allopurinol may protect against oxidant injury by inhibiting the inflammatory response. Male Sprague-Dawley rats were injected daily with vehicle or allopurinol and compared with noninjected controls. Animals were exposed to room air or 90% oxygen for 14 days. At the end of the exposure period, all animals were lavaged and bronchoalveolar lavage fluid (BALF) was examined for cell counts, lactate dehydrogenase (LDH), and protein. BALF neutrophils were significantly increased in oxygen-exposed noninjected controls (33 +/- 7 X 10(3)/mm3) and also in the vehicle-inoculated oxygen-exposed animals (43 +/- 6 X 10(3)/mm3). Allopurinol treatment resulted in a decrease in the neutrophilic alveolar response in oxygen-exposed animals (5.3 +/- 4 X 10(3)/mm3, P < 0.001). These data reveal that oxygen exposure produces a neutrophilic alveolar response that is attenuated by allopurinol treatment. BALF protein and LDH were significantly increased in all inoculated and noninoculated oxygen-exposed animals compared with air-exposed animals. Therefore, allopurinol decreases the neutrophilic alveolar response produced by a hyperoxic exposure in the rat but does not decrease lung injury as assessed by alveolar LDH and protein release. C1 WILFORD HALL USAF MED CTR,DEPT MED,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. RP BRYAN, CL (reprint author), UNIV TEXAS,HLTH SCI CTR,AUDIE L MURPHY VET ADM HOSP,DEPT MED,PULM DIS SECT 111E,SAN ANTONIO,TX 78284, USA. FU NHLBI NIH HHS [HL-30556] NR 24 TC 8 Z9 9 U1 0 U2 0 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 8750-7587 J9 J APPL PHYSIOL JI J. Appl. Physiol. PD JUL PY 1993 VL 75 IS 1 BP 357 EP 363 PG 7 WC Physiology; Sport Sciences SC Physiology; Sport Sciences GA LN649 UT WOS:A1993LN64900049 PM 8376286 ER PT J AU BURGESS, RC WONG, P COKER, SB BEACHAM, SG STRELETZ, LJ RAZ, I HINRICHS, H GALLHOFER, B THORWIRTH, V ORTEGA, HR EVERSON, C LAWS, M RASMUS, S JOHNSON, D MCSHERRY, JW GIRON, L ROSCOE, DD LEFORCE, BR COYNE, MF GRANDORFF, R STURM, D RAMBY, M BURDETTE, D GRIFFIN, SJ AF BURGESS, RC WONG, P COKER, SB BEACHAM, SG STRELETZ, LJ RAZ, I HINRICHS, H GALLHOFER, B THORWIRTH, V ORTEGA, HR EVERSON, C LAWS, M RASMUS, S JOHNSON, D MCSHERRY, JW GIRON, L ROSCOE, DD LEFORCE, BR COYNE, MF GRANDORFF, R STURM, D RAMBY, M BURDETTE, D GRIFFIN, SJ TI DIGITAL ELECTROENCEPHALOGRAPHS SO JOURNAL OF CLINICAL NEUROPHYSIOLOGY LA English DT Article C1 LOYOLA MED CTR,DEPT NEUROPHYSIOL,CHICAGO,IL. MERCY HOSP NEUROL CTR,EEG LAB,DES MOINES,IA. UNIV VERMONT,DEPT NEUROL,BURLINGTON,VT 05401. WILFORD HALL USAF MED CTR,EEG LAB,LACKLAND AFB,TX 78236. CHILDRENS HOSP MICHIGAN,DETROIT,MI 48201. USAF,MED CTR,DEPT NEUROSCI,WRIGHT PATTERSON AFB,OH 45433. RP BURGESS, RC (reprint author), BRITISH COLUMBIA CHILDRENS HOSP,BIOLOGIC SYST CORP,DEPT DIAGNOST NEUROPHYSIOL,VANCOUVER,BC,CANADA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0736-0258 J9 J CLIN NEUROPHYSIOL JI J. Clin. Neurophysiol. PD JUL PY 1993 VL 10 IS 3 BP 378 EP 392 PG 15 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA LR783 UT WOS:A1993LR78300012 ER PT J AU SCORDILISKELLEY, C ROBINSON, KD BELMORE, KA ATWOOD, JL CARLIN, RT AF SCORDILISKELLEY, C ROBINSON, KD BELMORE, KA ATWOOD, JL CARLIN, RT TI EVIDENCE FOR HYDROGEN-BONDS IN 1,2-DIMETHYL-3-PROPYLIMIDAZOLIUM CHLORIDE AND ITS CHLOROALUMINATE MOLTEN-SALTS SO JOURNAL OF CRYSTALLOGRAPHIC AND SPECTROSCOPIC RESEARCH LA English DT Article ID ION INTERACTIONS AB The crystal structure of 1,2-dimethyl-3-propylimidazolium chloride (DMPICI) reveals the formation of hydrogen bonds between the ring, methyl, and methylene hydrogens and the chloride ion. Although the aromatic rings are found in stacks, aromatic-aromatic interactions are precluded by the 6.98 angstrom distance between the rings. From IR and H-1NMR spectroscopies, it is determined that only the hydrogen bonds between the ring hydrogens and the chloride ion persist in the room-temperature molten salts obtained from combining DMPICI with AlCl3. C1 UNIV ALABAMA,DEPT CHEM,TUSCALOOSA,AL 35487. USAF ACAD,FRANK J SEILER RES LAB NE,COLORADO SPRINGS,CO 80840. NR 15 TC 6 Z9 6 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0277-8068 J9 J CRYST SPECTROSC PD JUL PY 1993 VL 23 IS 7 BP 601 EP 606 DI 10.1007/BF01228772 PG 6 WC Crystallography; Spectroscopy SC Crystallography; Spectroscopy GA LL376 UT WOS:A1993LL37600010 ER PT J AU OWSLEY, DW MANN, RW CHAPMAN, RE MOORE, E COX, WA AF OWSLEY, DW MANN, RW CHAPMAN, RE MOORE, E COX, WA TI POSITIVE IDENTIFICATION IN A CASE OF INTENTIONAL EXTREME FRAGMENTATION SO JOURNAL OF FORENSIC SCIENCES LA English DT Note DE PHYSICAL ANTHROPOLOGY; HUMAN IDENTIFICATION; TAPHONOMIC EFFECTS; FRAGMENTATION; COMPUTER IMAGING AB The investigation of the first of the murders of young males to which Jeffrey Dahmer confessed led to systematic survey of two acres of semirural property in Bath Township, Ohio. The survey revealed the fragmentary skeleton of a young adult male, as well as bones of several species of animals. Through archaeobiological analysis, the animal bones were identified and taphonomic modifications documented. The human bones were dry and weathered, and many were rodent-gnawed, indicating that they had been exposed for many years. The human bones displayed an extreme degree of splintering, warping, bending, and spiral breakage. The only relatively complete bone was a cervical vertebra. Dismemberment and breakage had been accomplished by cutting, blunt force, and, in the case of the ribs, manual bending. Even in so extreme a case of intentional fragmentation, however, forensic anthropological analysis resulted in positive identification, with the primary criteria based on matching osteological features evident in premortem and postmortem radiographs of a cervical vertebra. C1 USA,CENT IDENTIFICAT LAB,HICKAM AFB,HI. RP OWSLEY, DW (reprint author), NATL MUSEUM NAT HIST,DEPT ANTHROPOL,MS 112,WASHINGTON,DC 20560, USA. NR 3 TC 7 Z9 7 U1 1 U2 3 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JUL PY 1993 VL 38 IS 4 BP 985 EP 996 PG 12 WC Medicine, Legal SC Legal Medicine GA LM756 UT WOS:A1993LM75600035 PM 8355016 ER PT J AU GAUDREAULT, MLD LIEBST, BS BAGLEY, RL AF GAUDREAULT, MLD LIEBST, BS BAGLEY, RL TI SIMULTANEOUS DESIGN OF ACTIVE VIBRATION CONTROL AND PASSIVE VISCOUS DAMPING SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB Structural engineers have found that passive damping can reduce the amount of active damping required to control structural vibration. Conversely, improperly designed passive damping can inadvertently increase system reaction times, reducing control effectiveness. This paper presents several techniques for blending active vibration control and passive viscous damping. A dosed-form optimal solution for minimizing a quadratic cost functional is derived, but it is shown to be dependent on the initial conditions and produces time-varying damping coefficients. To eliminate the dependence on initial conditions, solution techniques for suboptimal, state independent solutions are developed. The suboptimal solutions require less computation effort, but still give good estimates of the optimal solution. The advantages and disadvantages of the different solution techniques are discussed with respect to computation requirements and robustness. Methods of comparing competing designs are also discussed. Several numerical examples illustrate the similarities and difference of the various techniques. More importantly, the examples demonstrate the significant improvements achievable by simultaneously designing passive and active damping. RP GAUDREAULT, MLD (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 4 Z9 4 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JUL-AUG PY 1993 VL 16 IS 4 BP 654 EP 661 DI 10.2514/3.56606 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA LM739 UT WOS:A1993LM73900008 ER PT J AU HALL, CD AF HALL, CD TI AVERAGING OF 2ND-ORDER HAMILTONIAN OSCILLATORS WITH A SLOWLY VARYING PARAMETER SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Note RP HALL, CD (reprint author), USAF,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JUL-AUG PY 1993 VL 16 IS 4 BP 782 EP 784 DI 10.2514/3.21081 PG 3 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA LM739 UT WOS:A1993LM73900025 ER PT J AU SHOWALTER, DE AF SHOWALTER, DE TI CASTE, SKILL, AND TRAINING - THE EVOLUTION OF COHESION IN EUROPEAN ARMIES FROM THE MIDDLE-AGES TO THE 16TH-CENTURY SO JOURNAL OF MILITARY HISTORY LA English DT Article RP SHOWALTER, DE (reprint author), USAF ACAD, COLORADO SPRINGS, CO 80840 USA. NR 101 TC 9 Z9 9 U1 0 U2 0 PU SOC MILITARY HISTORY PI LEXINGTON PA C/O VIRGINIA MILITARY INST, GEORGE C MARSHALL LIBRARY, LEXINGTON, VA 24450-1600 USA SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD JUL PY 1993 VL 57 IS 3 BP 407 EP 430 DI 10.2307/2943986 PG 24 WC History SC History GA LM044 UT WOS:A1993LM04400001 ER PT J AU MORRISON, JC RAMOSGABATIN, A GELORMINI, RG BROWN, JW PITTS, NL AF MORRISON, JC RAMOSGABATIN, A GELORMINI, RG BROWN, JW PITTS, NL TI PROMPT VISUALIZATION OF THE GALLBLADDER WITH A RIM SIGN - ACUTE OR SUBACUTE CHOLECYSTITIS SO JOURNAL OF NUCLEAR MEDICINE LA English DT Note ID RADIONUCLIDE ANGIOGRAPHY AB An immunosuppressed, neutropenic patient developed symptoms and signs of acute cholecystitis. Gallbladder ultrasound was consistent with acute cholecystitis. Technetium-99m-diisopropyl iminodiacetic acid (DISIDA) scan showed a rim sign, but with normal gallbladder visualization. On restudy 72 hr later when the patient's WBC count was recovering, the Tc-99m-DISIDA scan again showed a persistent rim sign, but now there was no gallbladder visualization at 1 hr, a pattern strongly predictive for acute complicated cholecystitis. Biliary drainage was performed by percutaneous cholecystotomy with clinical improvement. Semielective cholecystectomy performed 8 wk later confirmed both acute and chronic cholecystitis. We describe the rim sign and its variants, mechanisms of causation, prognostic importance and correlate our report with a review of the literature. C1 WILFORD HALL USAF MED CTR,DEPT RADIOL,NUCL MED SERV,LACKLAND AFB,TX 78236. NR 9 TC 8 Z9 8 U1 0 U2 0 PU SOC NUCLEAR MEDICINE INC PI RESTON PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 SN 0161-5505 J9 J NUCL MED JI J. Nucl. Med. PD JUL PY 1993 VL 34 IS 7 BP 1169 EP 1171 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA LL238 UT WOS:A1993LL23800029 PM 8315497 ER PT J AU SEABA, JP CHEN, LD AF SEABA, JP CHEN, LD TI LIFTOFF CHARACTERISTICS OF METHANE JET DIFFUSION FLAMES SO JOURNAL OF PROPULSION AND POWER LA English DT Note C1 WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP SEABA, JP (reprint author), UNIV IOWA,DEPT MECH ENGN,IOWA CITY,IA 52242, USA. NR 9 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 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD JUL-AUG PY 1993 VL 9 IS 4 BP 654 EP 656 DI 10.2514/3.23673 PG 3 WC Engineering, Aerospace SC Engineering GA LN143 UT WOS:A1993LN14300023 ER PT J AU POWELL, JA MOLONEY, JV NEWELL, AC ALBANESE, RA AF POWELL, JA MOLONEY, JV NEWELL, AC ALBANESE, RA TI BEAM COLLAPSE AS AN EXPLANATION FOR ANOMALOUS OCULAR DAMAGE SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID NONLINEAR SCHRODINGER-EQUATION; RETINAL INJURY AB The basic mathematical phenomena relevant to ocular damage caused by ultrashort laser pulses are discussed with the use of mathematical results and numerical modeling. The primary effects of nonlinear self-focusing and beam collapse are examined in the ocular safety context. Finite-time material response and group-velocity dispersion are discussed as possible mitigating factors. An argument is presented that indicates that the initial stages of beam collapse are essentially two-dimensional. Experiments are suggested that might help distinguish the most important contributing factors in the damage regime. The numerical methodology is detailed in an appendix. C1 UTAH STATE UNIV,DEPT MATH & STAT,LOGAN,UT 84322. USAF,SCH AEROSP MED,DIV DIRECTED ENERGY,RADIAT ANAL BRANCH,BROOKS AFB,TX 78235. RP POWELL, JA (reprint author), UNIV ARIZONA,DEPT MATH,TUCSON,AZ 85721, USA. NR 23 TC 16 Z9 16 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD JUL PY 1993 VL 10 IS 7 BP 1230 EP 1241 DI 10.1364/JOSAB.10.001230 PG 12 WC Optics SC Optics GA LL532 UT WOS:A1993LL53200013 ER PT J AU PAIS, MR CHOW, LC MAHEFKEY, ET AF PAIS, MR CHOW, LC MAHEFKEY, ET TI MULTIPLE JET IMPINGEMENT COOLING SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article ID IMPINGING JET; HEAT-FLUX AB Experiments were performed to study the effect of nozzle rotation, flow rate, degrees of subcooling, number of jets, and velocity on the heat flux in jet impingement cooling using deionized distilled water. The heat nux is a strong function of the flow rate and degree of subcooling, attaining a maximum value of the order of 600 W/cm2 at the highest flow rates. The heat flux shows no significant dependency on velocity and number of jets for fixed flow rates. The rate of rotation shows no significant effect on the heat flux within the forced convective and early nucleate boiling region. At temperatures close to the critical heat flux the rotation retards the heat flux (compared with a stationary jet) diminishing it by 20%. Comparisons with published results are presented. C1 WRIGHT RES & DEV CTR, DIV AEROSP POWER, AERO PROPULS & POWER LAB, WRIGHT PATTERSON AFB, OH 45433 USA. RP UNIV KENTUCKY, DEPT MECH ENGN, LEXINGTON, KY 40506 USA. NR 24 TC 6 Z9 6 U1 0 U2 1 PU AMER INST AERONAUTICS ASTRONAUTICS PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 EI 1533-6808 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JUL-SEP PY 1993 VL 7 IS 3 BP 435 EP 440 DI 10.2514/3.437 PG 6 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA LN868 UT WOS:A1993LN86800007 ER PT J AU GANGULY, B GARSCADDEN, A WILLIAMS, J HAALAND, P AF GANGULY, B GARSCADDEN, A WILLIAMS, J HAALAND, P TI GROWTH AND MORPHOLOGY OF CARBON GRAINS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID DUST GRAINS; MOLECULES; MICROSTRUCTURE; FILMS AB Carbon grains less than 1 mum in diameter have been formed in low pressure rare-gas discharges using graphite electrodes and audio frequency excitation. The grains have been examined in situ with Mie etching scattering to determine growth rates and ex situ using scanning and transmission electron microscopies to quantitatively examine their morphology. These results, as well as perturbation of the plasma impedance by the dust, suggest a dust formation mechanism based on ionization of sputtered carbon and subsequent collection of C+ ions by the Debye sheaths which surround negative particles in the plasma. RP WRIGHT LAB, PLASMA PHYS GRP, WRIGHT PATTERSON AFB, OH 45433 USA. NR 23 TC 44 Z9 45 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 EI 1520-8559 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD JUL-AUG PY 1993 VL 11 IS 4 BP 1119 EP 1125 DI 10.1116/1.578451 PN 1 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA LP007 UT WOS:A1993LP00700070 ER PT J AU PARSONS, TW CAIN, JE LAUERMAN, WC ELIAS, Z ETHIER, DB COE, J GORMLEY, W AF PARSONS, TW CAIN, JE LAUERMAN, WC ELIAS, Z ETHIER, DB COE, J GORMLEY, W TI SPINE INJURIES IN COMBAT TROOPS - PANAMA, 1989 SO MILITARY MEDICINE LA English DT Note AB Operation Just Cause was until recently the largest American combat operation since Vietnam, and remains the largest night-time parachute operation since World War II. All 252 casualties were airlifted to San Antonio, Texas. for medical treatment. Greater than 80% sustained orthopedic injuries. Sixteen patients were admitted for injuries to the back or neck. Three of the four patients with significant fractures or fracture-dislocations were paraplegic. Two of the three patients with gunshot wounds to the back required extensive reconstruction for wound management. In addition to the 252 casualties, there were 23 fatalities, among whom 7 suffered major injuries to the spine. Spine injuries represented the most significant source of long-term morbidity among those soldiers wounded in combat, in Panama, and were common among the fatalities. Noteworthy in these cases was the high percentage of severe neurologic injuries in patients with significant fractures (75%), particularly fractures associated with gunshot wounds. Also of interest were the cases of major soft tissue injury associated with high-velocity gunshot wounds (66%) and the extensive soft tissue surgery needed to treat these injuries. RP PARSONS, TW (reprint author), WILFORD HALL USAF MED CTR,DEPT ORTHOPAED,LACKLAND AFB,TX 78236, USA. NR 0 TC 20 Z9 22 U1 1 U2 2 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUL PY 1993 VL 158 IS 7 BP 501 EP 502 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA LM843 UT WOS:A1993LM84300022 PM 8351057 ER PT J AU GEDZELMAN, SD ARNOLD, R AF GEDZELMAN, SD ARNOLD, R TI THE FORM OF CYCLONIC PRECIPITATION AND ITS THERMAL IMPACT SO MONTHLY WEATHER REVIEW LA English DT Article ID FLUX-CORRECTED TRANSPORT; FREEZING PRECIPITATION; MICROSCALE STRUCTURE; WINTER STORM; CLOUDS; MODEL; ORGANIZATION; ALGORITHM; MESOSCALE AB A two-dimensional, parameterized kinematic cloud microphysics model is described and used to simulate the form of cyclonic precipitation and its thermal impact in three idealized situations. The first situation represents a strong, warm, or stationary front with a zone of freezing rain and ice pellets separating regions of rain and snow. The second represents a storm with initial surface temperatures slightly above 0-degrees-C, and in which precipitation at the ground changes from rain to snow as a result of cooling by melting and evaporation of hydrometeors. The third represents a shallow cloud in a sounding with all temperatures below 0-degrees-C that initially produces freezing drizzle before a change to snow or ice pellets. C1 USAF, PHILLIPS LAB, GEOPHYS DIRECTORATE, BEDFORD, MA 01731 USA. RP CUNY CITY COLL, DEPT EARTH & ATMOSPHER SCI, CONVENT AVE & 137TH ST, NEW YORK, NY 10031 USA. NR 52 TC 14 Z9 14 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0027-0644 EI 1520-0493 J9 MON WEATHER REV JI Mon. Weather Rev. PD JUL PY 1993 VL 121 IS 7 BP 1957 EP 1978 DI 10.1175/1520-0493(1993)121<1957:TFOCPA>2.0.CO;2 PG 22 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA LK949 UT WOS:A1993LK94900006 ER PT J AU LAIR, AV AF LAIR, AV TI FINITE EXTINCTION TIME FOR SOLUTIONS OF NONLINEAR PARABOLIC EQUATIONS SO NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS LA English DT Article DE NONLINEAR PARABOLIC EQUATION; FINITE EXTINCTION TIME ID ABSORPTION RP LAIR, AV (reprint author), USAF,INST TECHNOL,ENC,DEPT MATH & STAT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 14 Z9 17 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0362-546X J9 NONLINEAR ANAL-THEOR JI Nonlinear Anal.-Theory Methods Appl. PD JUL PY 1993 VL 21 IS 1 BP 1 EP 8 DI 10.1016/0362-546X(93)90172-O PG 8 WC Mathematics, Applied; Mathematics SC Mathematics GA LT379 UT WOS:A1993LT37900001 ER PT J AU BUDNI, PA KNIGHTS, MG CHICKLIS, EP SCHEPLER, KL AF BUDNI, PA KNIGHTS, MG CHICKLIS, EP SCHEPLER, KL TI KILOHERTZ AGGASE2 OPTICAL PARAMETRIC OSCILLATOR PUMPED AT 2 MU-M SO OPTICS LETTERS LA English DT Article AB A high-repetition-rate high-average-power AgGaSe2 doubly resonant optical parametric oscillator has been demonstrated by using a 2-mum pump laser operating at 2.5 and 5 kHz. Energy conversion and slope efficiencies of 23% and 32%, respectively, were achieved. Sustained average power outputs as high as 740 mW were measured. Evidence of optical parametric oscillator output saturation and damage site formation at the crystal output face are effects attributed to thermal lensing in our AgGaSe2 crystal. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP BUDNI, PA (reprint author), LOCKHEED SANDERS,POB 868,NASHUA,NH 03061, USA. RI Schepler, Kenneth/D-3730-2015; OI Schepler, Kenneth/0000-0001-9658-2305 NR 7 TC 26 Z9 28 U1 0 U2 7 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUL 1 PY 1993 VL 18 IS 13 BP 1068 EP 1070 DI 10.1364/OL.18.001068 PG 3 WC Optics SC Optics GA LJ227 UT WOS:A1993LJ22700012 PM 19823292 ER PT J AU RUFFIN, SA WALDROP, TC AUFDEMORTE, TB AF RUFFIN, SA WALDROP, TC AUFDEMORTE, TB TI DIAGNOSIS AND TREATMENT OF SUBPONTIC OSSEOUS HYPERPLASIA - REPORT OF A CASE SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Note ID HYPEROSTOSIS AB This report describes a case of subpontic osseous hyperplasia that occurred in the posterior mandible of a healthy 67-year-old woman. The two hard masses, which were removed from beneath a fixed partial denture that was placed 35 years ago and spanned the lower left first premolar and the first and second molars, consisted of normal viable dense cortical bone. Only 30 cases of this phenomenon defined as a slow-growing, benign osseous proliferation occurring on the crest of the alveolar ridge beneath the pontic of a fixed partial denture have been described in the literature. Possible causes, including genetic programming, functional stimulus, and mild chronic irritation are discussed, as well as rationale for treatment of this anomaly. C1 WILFORD HALL USAF MED CTR,DC,DST,1615 TRUEMPER ST,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. NR 12 TC 7 Z9 8 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD JUL PY 1993 VL 76 IS 1 BP 68 EP 72 DI 10.1016/0030-4220(93)90297-H PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LQ421 UT WOS:A1993LQ42100017 PM 8351126 ER PT J AU BLICK, DW MILLER, SA BROWN, GC MURPHY, MR AF BLICK, DW MILLER, SA BROWN, GC MURPHY, MR TI BEHAVIORAL TOXICITY OF ANTICHOLINESTERASES IN PRIMATES - CHRONIC PHYSOSTIGMINE AND SOMAN INTERACTIONS SO PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR LA English DT Article DE ORGANOPHOSPHATES; CARBAMATES; ANTICHOLINESTERASES; MACAQUE; TRACKING PERFORMANCE ID ACETYLCHOLINESTERASE INHIBITION; ADJUNCT PRETREATMENT; PROTECTION; PYRIDOSTIGMINE; INTOXICATION; CARBAMATE; ATROPINE; EFFICACY; ANIMALS; DRUG AB Dose rates for continuous infusion of physostigmine salicylate required to inhibit 30 and 60% of normal serum cholinesterase activity in rhesus monkeys were determined. The effects of continuous physostigmine infusion at these dose rates on the behavioral toxicity of daily repeated low-dose soman were determined not to be deleterious; in fact, they were slightly (and variably) protective. C1 USAF,ARMSTRONG LAB,DIV DIRECTED ENERGY,BROOKS AFB,TX 78235. RP BLICK, DW (reprint author), SYST RES LABS,POB 35313,BROOKS AFB,TX 78235, USA. NR 35 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 0091-3057 J9 PHARMACOL BIOCHEM BE JI Pharmacol. Biochem. Behav. PD JUL PY 1993 VL 45 IS 3 BP 677 EP 683 DI 10.1016/0091-3057(93)90524-W PG 7 WC Behavioral Sciences; Neurosciences; Pharmacology & Pharmacy SC Behavioral Sciences; Neurosciences & Neurology; Pharmacology & Pharmacy GA LH047 UT WOS:A1993LH04700026 PM 8332626 ER PT J AU LIBY, BW AF LIBY, BW TI HOLD RECOMMENDATION LETTERS FOR LATER SO PHYSICS TODAY LA English DT Letter RP LIBY, BW (reprint author), USAF,KIRTLAND AFB,NM 87117, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JUL PY 1993 VL 46 IS 7 BP 114 EP 114 DI 10.1063/1.2808991 PG 1 WC Physics, Multidisciplinary SC Physics GA LN088 UT WOS:A1993LN08800027 ER PT J AU LEE, CYC SANTHOSH, U AF LEE, CYC SANTHOSH, U TI THE ROLE OF THE FIBRILLAR STRUCTURES IN THE COMPRESSIVE BEHAVIOR OF RIGID-ROD POLYMERIC FIBERS SO POLYMER ENGINEERING AND SCIENCE LA English DT Article ID MODEL AB The buckling of a fiber with a fibrillar microstructure is examined in light of all possible buckling modes. Parametric studies are done at variously assumed morphological levels, from a fibril down to a molecular chain, and it is shown that the buckling mode could be different depending on the dimensional level of the individual buckling unit and the degree of interaction between the buckling elements. It is argued that fibrillar instability is the principal reason for the low compressive strength of rigid-rod polymeric fibers, and alternative approaches to improve the degree of interaction between the fibrils are considered. C1 ADTECH SYST RES INC,DAYTON,OH 45432. RP LEE, CYC (reprint author), WRIGHT LAB,MLBP,WRIGHT PATTERSON AFB,OH 45433, USA. NR 29 TC 15 Z9 17 U1 1 U2 5 PU SOC PLASTICS ENG INC PI BROOKFIELD CENTER PA 14 FAIRFIELD DR, BROOKFIELD CENTER, CT 06804-0403 SN 0032-3888 J9 POLYM ENG SCI JI Polym. Eng. Sci. PD JUL PY 1993 VL 33 IS 14 BP 907 EP 912 DI 10.1002/pen.760331407 PG 6 WC Engineering, Chemical; Polymer Science SC Engineering; Polymer Science GA LP934 UT WOS:A1993LP93400006 ER PT J AU LINSTER, BG AF LINSTER, BG TI OFFICIAL LIES - HOW WASHINGTON MISLEADS US - BENNETT,JT, DILORENZO,TJ SO PUBLIC CHOICE LA English DT Book Review RP LINSTER, BG (reprint author), USAF ACAD,DFEG,HQ USAFA,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0048-5829 J9 PUBLIC CHOICE JI Public Choice PD JUL PY 1993 VL 76 IS 3 BP 298 EP 300 PG 3 WC Economics; Political Science SC Business & Economics; Government & Law GA LG649 UT WOS:A1993LG64900012 ER PT J AU YOEST, DT AF YOEST, DT TI TO TRAIN OR NOT TO TRAIN SO QUALITY PROGRESS LA English DT Article RP YOEST, DT (reprint author), SVERDRUP TECHNOL,ARNOLD AFB,TN, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0033-524X J9 QUAL PROG JI Qual. Prog. PD JUL PY 1993 VL 26 IS 7 BP 73 EP 75 PG 3 WC Engineering, Multidisciplinary; Engineering, Industrial; Management; Operations Research & Management Science SC Engineering; Business & Economics; Operations Research & Management Science GA LM156 UT WOS:A1993LM15600023 ER PT J AU MUDALIAR, S LEE, JK AF MUDALIAR, S LEE, JK TI MODIFIED RADIATIVE-TRANSFER THEORY IN 2ND-ORDER BACKSCATTERING COEFFICIENTS OF A 2-LAYER RANDOM MEDIUM SO RADIO SCIENCE LA English DT Article ID SCATTERING AB The modified radiative transfer theory is used to obtain the backscattering coefficients of a two-layer random medium. Since exact solutions to the MRT equations are not available certain approximations are used. First. a first-order approximation is made to obtain the backscattering coefficients. In an attempt to investigate the appropriateness of the first-order approximation, higher-order solutions are obtained. It is observed that the second-order solution is important because it is the primary source of depolarization (cross-polarized backscatter): besides it also helps one to estimate the error involved in settling for a first-order approximation. Hence the second-order backscattering coefficients are calculated and cast in a form suitable for physical interpretation. It is noticed that certain ''phase'' terms are absent. After exploring the reasons for this, it is suggested that the present MRT theory be further modified to accommodate these terms. Finally with the help of numerical examples, characteristics of the second-order solutions are studied by comparing them with the corresponding Born results and also with the first-order solutions. C1 SYRACUSE UNIV,DEPT ELECT & COMP ENGN,SYRACUSE,NY 13244. RP MUDALIAR, S (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 8 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 JUL-AUG PY 1993 VL 28 IS 4 BP 459 EP 469 DI 10.1029/92RS02883 PG 11 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA LR260 UT WOS:A1993LR26000002 ER PT J AU BERNHARDT, PA HUBA, JD CHATURVEDI, PK FULFORD, JA FORSYTH, PA ANDERSON, DN ZALESAK, ST AF BERNHARDT, PA HUBA, JD CHATURVEDI, PK FULFORD, JA FORSYTH, PA ANDERSON, DN ZALESAK, ST TI ANALYSIS OF ROCKET BEACON TRANSMISSIONS FOR COMPUTERIZED RECONSTRUCTION OF IONOSPHERIC DENSITIES SO RADIO SCIENCE LA English DT Article ID EQUATORIAL SPREAD-F; TRANSEQUATORIAL BUBBLES; TOMOGRAPHIC INVERSION; SATELLITE PHOTOMETRY; PLASMA DEPLETIONS; EMISSION RATES AB Three methods are described to obtain ionospheric electron densities from transionospheric. rocket-beacon total electron content (TEC) data. First, when the line-of-sight from a ground receiver to the rocket beacon is tangent to the flight trajectory, the electron concentration can be obtained by differentiating the TEC with respect to the distance to the rocket. A similar method may be used to obtain the electron-density profile if the layer is horizontally stratified. Second, TEC data obtained during chemical release experiments may be interpreted with the aid of physical models of the disturbed ionosphere to yield spatial maps of the modified regions. Third, computerized tomography (CT) can be used to analyze TEC data obtained along a chain of ground-based receivers aligned along the plane of the rocket trajectory. CT analysis of TEC data is used to reconstruct a two-dimensional image of a simulated equatorial plume. TEC data is computed for a linear chain of nine receivers with adjacent spacings of either 100 or 200 km. The simulation data are analyzed to provide an F region reconstruction on a grid with 15 x 15 km pixels. Ionospheric rocket tomography may also be applied to rocket-assisted measurements of amplitude and phase scintillations and airglow intensities. C1 UNIV WESTERN ONTARIO,CTR RADIO SCI,LONDON N6A 3K7,ONTARIO,CANADA. USAF,PHILLIPS LAB,DIV IONOSPHER EFFECTS,BEDFORD,MA 01731. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RP BERNHARDT, PA (reprint author), USN,RES LAB,DIV PLASMA PHYS,SPACE PLASMA BRANCH,WASHINGTON,DC 20375, USA. NR 43 TC 14 Z9 14 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD JUL-AUG PY 1993 VL 28 IS 4 BP 613 EP 627 DI 10.1029/93RS00383 PG 15 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA LR260 UT WOS:A1993LR26000016 ER PT J AU KENSKY, ET ZELMON, DE AF KENSKY, ET ZELMON, DE TI A FULLY AUTOMATED STAGE FOR LOSS MEASUREMENTS OF OPTICAL WAVE-GUIDES SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB A novel test setup for making three-prism or out-of-plane scattering loss measurements for thin-film optical waveguides is described. The test structure is automated and provides quick, convenient and repeatable measurements. The setup is relatively easy to fabricate and employs several unique features which improve the accuracy and repeatability of the measurements including real-time coupling force monitoring. RP KENSKY, ET (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 3 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 1993 VL 64 IS 7 BP 1794 EP 1796 DI 10.1063/1.1144012 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA LN411 UT WOS:A1993LN41100018 ER PT J AU LUKE, RA AF LUKE, RA TI SOFTWARE-DESIGN OF 6DOF GUIDANCE APPROXIMATIONS IN 3DOF ASCENT SIMULATIONS SO SIMULATION LA English DT Article DE TRAJECTORY SIMULATION; NONLINEAR PROGRAMMING; FLIGHT MECHANICS; NUMERICAL ANALYSIS AB Methods are being developed for approximating 6DOF (degrees of freedom) motion characteristics in an operational 3DOF trajectory simulation. The optimizable 3DOF and the nonoptimizable 6DOF simulations are sued for launch planning and operations for a current U.S. launch vehicle program. A previous paper[1] discussed the derivation and impact on the 3DOF in terms of vehicle attitude and angle of attack time histories. This paper continues by developing the methodology within the simulation and optimizations software framework. It must take into account both the frequency and the sequencing of calls to various FORTRAN subroutines that model vehicle flight mechanics. These calls and the routines must be planned so as not to violate assumptions upon which the nonlinear programming algorithms used to shape the trajectory are based. Discussion is included on the steps that must be taken to sufficiently simplify the 6DOF booster guidance scheme. In order to do this, a careful review is made of how the trajectory is described and propagated. This description is developed within the context of the various required reference frames and the vehicle attitudes specified with respect to those frames. RP LUKE, RA (reprint author), USAF,PHILLIPS LAB DIRECTORATE,POB 9045,ALBUQUERQUE,NM 87119, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU SIMULATION COUNCILS INC PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92117 SN 0037-5497 J9 SIMULATION JI Simulation PD JUL PY 1993 VL 61 IS 1 BP 22 EP 36 DI 10.1177/003754979306100103 PG 15 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering SC Computer Science GA MX102 UT WOS:A1993MX10200003 ER PT J AU BOWERS, GJ GETZ, JB ROETTGER, RH GAINES, CE BECK, DE AF BOWERS, GJ GETZ, JB ROETTGER, RH GAINES, CE BECK, DE TI NONPALPABLE BREAST-LESIONS - ASSOCIATION OF MAMMOGRAPHIC ABNORMALITIES WITH DIAGNOSIS AFTER NEEDLE-DIRECTED BIOPSY SO SOUTHERN MEDICAL JOURNAL LA English DT Article ID CANCER; LOCALIZATION; CALCIFICATIONS; MORTALITY; DISEASE; RISK AB We reviewed the experience with needle-directed breast biopsies (NDBB) in a military medical center. In 195 patients, 207 NDBBs were done; 49 of these biopsies (24%) rendered a diagnosis of malignancy. The majority of patients (78%) had invasive cancer; 44% of them were found to have associated malignant axillary adenopathy. Mammographic indications were examined; 65% of the biopsies were done for microcalcifications with or without an associated mass/density. Approximately one third of these lesions harbored malignancy or high-risk hyperplasia. Discrete nodular densities had a low rate of malignancy (7%), while spiculated/stellate masses proved almost uniformly to be invasive cancer. NDBB should be considered in all women with mammographic abnormalities. The associated risk of malignancy may vary depending on the specific mammographic appearance of the lesion. Unfortunately, a significant number of women may have relatively advanced malignancy when first seen, despite having nonpalpable disease. RP BOWERS, GJ (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG,SURG ONCOL SECT,PSSG,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. RI Beck, David/A-5503-2011 NR 26 TC 2 Z9 6 U1 0 U2 0 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD JUL PY 1993 VL 86 IS 7 BP 748 EP 752 DI 10.1097/00007611-199307000-00005 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA LM914 UT WOS:A1993LM91400005 PM 8391719 ER PT J AU CENTERS, PW AF CENTERS, PW TI BEHAVIOR OF SILICONE ANTIFOAM ADDITIVES IN SYNTHETIC ESTER LUBRICANTS SO TRIBOLOGY TRANSACTIONS LA English DT Article; Proceedings Paper CT TRIBOLOGY CONF CY OCT 19-21, 1992 CL SAN DIEGO, CA SP AMER SOC MECH ENGINEERS, SOC TRIBOLOGISTS & LUBRICAT ENGINEERS AB The behavior of silicone (polydimethylsiloxane, PDMS) antifoamants as a function of PDMS viscosity in non-foaming and foaming synthetic ester turbine engine lubricants or model esters is described. Ten parts-per-million additions of PDMS with viscosities in the excess of about 5000 mm2s-1 (cSt) are very effective anitfoamants. At intermediate PDMS viscosities of 10-5000 mm2s-1, the additive is profoamant. At very low PDMS viscosities of less than about 10 mm2s-1, the additive appears to be ineffectual either as pro- or antifoamant under the test conditions. The results provide a more complete understanding of additive-ester foaming behavior resulting in the development of a hypothesis for such partially miscible systems based upon the limited solubility of PDMS in esters and that effect on surface tension as influenced by variables such as PDMS molecular weight, concentration, and temperature. The hypothesis aids in explaining much of the previous, often conflicting, data and conclusions about foaming in such systems. RP CENTERS, PW (reprint author), USAF,WRIGHT LAB,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 28 TC 4 Z9 4 U1 1 U2 2 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD JUL PY 1993 VL 36 IS 3 BP 381 EP 386 DI 10.1080/10402009308983173 PG 6 WC Engineering, Mechanical SC Engineering GA LL446 UT WOS:A1993LL44600007 ER PT J AU PITZER, EW AF PITZER, EW TI PREDICTION OF VISCOSITIES USING CHEMICAL GRAPH-THEORY SO TRIBOLOGY TRANSACTIONS LA English DT Article DE LUBRICANT PROPERTIES; MODELING; CHEMICAL GRAPH THEORY ID MOLECULAR CONNECTIVITY AB The viscosities of three groups of lubricant basestock molecules are predicted using chemical graph theory. Alkyl diphenylphosphates, trimethyloethane esters, and oligomers of chlorotrifluoroethylene are modeled. These compounds are similar for graph theoretical modeling purposes in that all are aliphatic in nature or vary only by aliphatic substituents. The graph theoretical approach for the modeling of these compounds uses summations of the shortest topological distances between atoms in the molecule. A new topological index is introduced that weights chlorine molecules in the chlorotrifluoroethylene oligomers. For each group modeled, the coefficient of determination r2 was in excess of 0.99 with a standard error of estimate well below five percent of the average value modeled. RP PITZER, EW (reprint author), USAF,WRIGHT LAB,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 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 JUL PY 1993 VL 36 IS 3 BP 417 EP 420 DI 10.1080/10402009308983179 PG 4 WC Engineering, Mechanical SC Engineering GA LL446 UT WOS:A1993LL44600013 ER PT J AU SPIRNAK, JP LUBKE, WL THOMPSON, IM LOPEZ, M AF SPIRNAK, JP LUBKE, WL THOMPSON, IM LOPEZ, M TI DYSTROPHIC BLADDER WALL CALCIFICATIONS FOLLOWING INTRAVESICAL BCG TREATMENT FOR SUPERFICIAL TRANSITIONAL-CELL CARCINOMA OF BLADDER SO UROLOGY LA English DT Note ID BACILLUS CALMETTE-GUERIN; MITOMYCIN-C TREATMENT; CANCER; INSITU AB Bacillus Calmette-Guerin has been established as one of the most active agents for the treatment of superficial transitional cell carcinoma of the bladder. Although complications do occur with this agent, they are usually transient and mild. Two cases are herein reported in which dystrophic calcification of the urinary bladder occurred following BCG therapy; one had a diffuse and severe complication. This complication can occur with other intravesical agents, and methods for management are reported. C1 BROOKE ARMY MED CTR,DEPT UROL,FT SAM HOUSTON,TX 78234. BROOKE ARMY MED CTR,DEPT PATHOL,FT SAM HOUSTON,TX 78234. WILFORD HALL USAF MED CTR,DEPT UROL,SAN ANTONIO,TX. RP SPIRNAK, JP (reprint author), BROOKE ARMY MED CTR,DEPT RADIOL,FT SAM HOUSTON,TX 78234, USA. NR 15 TC 6 Z9 7 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0090-4295 J9 UROLOGY JI UROLOGY PD JUL PY 1993 VL 42 IS 1 BP 89 EP 92 DI 10.1016/0090-4295(93)90350-J PG 4 WC Urology & Nephrology SC Urology & Nephrology GA LR144 UT WOS:A1993LR14400018 PM 8328131 ER PT J AU TOMCZAK, JA BROXSON, EH MARLAR, RA LONG, GL AF TOMCZAK, JA BROXSON, EH MARLAR, RA LONG, GL TI ASSOCIATION OF 2 NOVEL INTRON MUTATIONS WITH FAMILIAL TYPE-I PROTEIN-C DEFICIENCY SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 UNIV VERMONT,DEPT BIOCHEM,BURLINGTON,VT 05405. USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. UNIV COLORADO,DEPT PEDIAT,DENVER,CO 80202. VET ADM MED CTR,DENVER,CO 80220. NR 1 TC 1 Z9 1 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN 30 PY 1993 VL 69 IS 6 BP 721 EP 721 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA LT577 UT WOS:A1993LT57700651 ER PT J AU BERDEAUX, DH MCGLASSON, DL MARLAR, RA AF BERDEAUX, DH MCGLASSON, DL MARLAR, RA TI FAMILIAL ASSOCIATION OF PLASMINOGEN-ACTIVATOR INHIBITOR (PAI) IN INDEX PATIENTS WITH HEREDITARY THROMBOTIC DISEASE SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. VAMC,DENVER,CO. UNIV COLORADO,BOULDER,CO 80309. KEESLER MED CTR,KEESLER AFB,MS. NR 0 TC 0 Z9 0 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN 30 PY 1993 VL 69 IS 6 BP 771 EP 771 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA LT577 UT WOS:A1993LT57700823 ER PT J AU ABSHIRE, TC BROXSON, EH TUCKER, EL GIROUX, DS WERNER, EJ AF ABSHIRE, TC BROXSON, EH TUCKER, EL GIROUX, DS WERNER, EJ TI PREVALENCE OF VON-WILLEBRAND DISEASE IN CHILDREN - A MULTIETHIC STUDY SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 KESSLER MED CTR,DEPT PEDIAT,KESSLER AFB,MS. USAF,MED CTR,DEPT PEDIAT,WRIGHT PATTERSON AFB,OH 45433. EASTERN VIRGINIA MED SCH,CHILDRENS HOSP KINGS DAUGHTERS,NORFOLK,VA 23501. NR 0 TC 0 Z9 0 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN 30 PY 1993 VL 69 IS 6 BP 1183 EP 1183 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA LT577 UT WOS:A1993LT57702293 ER PT J AU BERDEAUX, DH HASSELL, KL MCGLASSON, DL MARLAR, RA AF BERDEAUX, DH HASSELL, KL MCGLASSON, DL MARLAR, RA TI FAMILIAL ASSOCIATION OF ANTIPHOSPHOLIPID ANTIBODIES IN INDEX PATIENTS WITH PRIMARY ANTIPHOSPHOLIPID SYNDROME SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 KEESLER MED CTR,KEESLER AFB,MS. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. VET ADM MED CTR,DENVER,CO 80220. UNIV COLORADO,BOULDER,CO 80309. NR 0 TC 0 Z9 0 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN 30 PY 1993 VL 69 IS 6 BP 1227 EP 1227 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA LT577 UT WOS:A1993LT57702434 ER PT J AU MCGLASSON, DL PAUL, J SHAFFER, KM AF MCGLASSON, DL PAUL, J SHAFFER, KM TI WHOLE-BLOOD COAGULATION-TESTING IN NEONATES UTILIZING THE BIOTRACK-512 COAGULATION MONITOR SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN 30 PY 1993 VL 69 IS 6 BP 1314 EP 1314 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA LT577 UT WOS:A1993LT57702759 ER PT J AU DOWNS, JR OSTER, G SANTANELLO, NC AF DOWNS, JR OSTER, G SANTANELLO, NC TI HMG COA REDUCTASE INHIBITORS AND QUALITY-OF-LIFE SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter ID VALIDITY C1 POLICY ANAL INC,BROOKLINE,MA. MERCK SHARP & DOHME LTD,W POINT,PA 19486. RP DOWNS, JR (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 5 TC 31 Z9 31 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 JUN 23 PY 1993 VL 269 IS 24 BP 3107 EP 3108 DI 10.1001/jama.269.24.3107 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA LH145 UT WOS:A1993LH14500018 PM 8505809 ER PT J AU MCDEVITT, NT DONLEY, MS ZABINSKI, JS AF MCDEVITT, NT DONLEY, MS ZABINSKI, JS TI UTILIZATION OF RAMAN-SPECTROSCOPY IN TRIBOCHEMISTRY STUDIES SO WEAR LA English DT Article AB Raman spectroscopy is used to investigate the tribochemistry of thin film solid lubricants. The development of an in situ tribotester (pin-on-disk), to be used in conjunction with a Raman spectrometer, is described in detail and its utility is demonstrated in several MoS2-based thin film systems. The films studied include two commercial films and two films generated in-house by pulsed laser deposition (PLD). The commercial films were MoS2-PbO-graphite and MoS2-Sb2O3. The PLD films were MoS2 and MoS2-PbO. Wear test studies on the commercial films generally produced MoO3 as a reaction product. PLD films were deposited at room temperature and 300-degrees-C. The PLD films formed at room temperature are amorphous and do not exhibit Raman scattering. The 300-degrees-C films contain enough crystalline domains to exhibit Raman scattering. Initial rubbing of the room-temperature PLD films imparts enough crystallinity to support Raman scattering. Wear tests on the PLD films produce reaction products containing MoO3 and PbMoO4. These crystalline oxides have a large Raman scattering cross section, making them easily detectable. These data provide a unique insight into the tribochemical interactions Of MoS2-based materials. C1 WRIGHT LAB,MAT DIRECTORATE,MLBT,WRIGHT PATTERSON AFB,OH 45433. RP MCDEVITT, NT (reprint author), RAMSPEC RES,4399 E MOHAVE DR,DAYTON,OH 45431, USA. NR 10 TC 28 Z9 28 U1 2 U2 7 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD JUN 15 PY 1993 VL 166 IS 1 BP 65 EP 72 DI 10.1016/0043-1648(93)90280-Y PG 8 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA LH750 UT WOS:A1993LH75000009 ER PT J AU MACK, MP BAYRAKTAROGLU, B KEHIAS, L BARRETTE, J NEIDHARD, R FITCH, R SCHERER, R DAVITO, D WEST, W AF MACK, MP BAYRAKTAROGLU, B KEHIAS, L BARRETTE, J NEIDHARD, R FITCH, R SCHERER, R DAVITO, D WEST, W TI MICROWAVE OPERATION OF HIGH-POWER INGAP/GAAS HETEROJUNCTION BIPOLAR-TRANSISTORS SO ELECTRONICS LETTERS LA English DT Article DE TRANSISTORS; BIPOLAR DEVICES; SEMICONDUCTOR DEVICES AND MATERIALS ID BASE AB The first high power demonstration of an InGaP/GaAs heterojunction bipolar transistor is presented. Multifinger selfaligned HBTs were tested at 3 GHz. A maximum Output power of 2.82 W CW was obtained for a 600 mum2 emitter area device (4.7 mW/mum2 power density) with an attendant gain of 6.92 dB; simultaneously, the device exhibited 55.2% power added efficiency, 69.1% collector efficiency and 8.0 x 10(4) A/cm2 emitter current density. C1 EPITRON CORP,PHOENIX,AZ 85027. RP MACK, MP (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD JUN 10 PY 1993 VL 29 IS 12 BP 1068 EP 1069 DI 10.1049/el:19930713 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA LN441 UT WOS:A1993LN44100017 ER PT J AU LOOK, DC ROBINSON, GD SIZELOVE, JR STUTZ, CE AF LOOK, DC ROBINSON, GD SIZELOVE, JR STUTZ, CE TI DONOR AND ACCEPTOR CONCENTRATIONS IN MOLECULAR-BEAM EPITAXIAL GAAS GROWN AT 300-DEGREES-C AND 400-DEGREES-C SO APPLIED PHYSICS LETTERS LA English DT Article ID LOW-TEMPERATURE; LAYERS; MESFETS; VOLTAGE; SURFACE; MBE AB The first Hall-effect measurements on molecular beam epitaxial GaAs layers grown at the low temperatures of 300 and 400-degrees-C are reported. Two independent methods were used to determine donor N(D) and acceptor N(A) concentrations and activation energy E(D0), with the following combined results: N(D) congruent-to 3 +/- 1 X 10(18), N(A) congruent-to 1.5 +/- I X 10(17) CM-3 , and E(D0) = 0.645 +/- 0.009 eV for the 300-degrees-C layer; N(D) congruent-to 2 +/- 1 X 10(17), N(A) congruent-to 7 +/- 3 X 10(16) CM-3 , and E(D0) = 0.648 +/- 0.003 eV for the 400-degrees-C layer. Thus, the deep donor is not the expected EL2, which has E(D0) = 0. 75 +/- 0.01 eV. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 15 TC 37 Z9 37 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 7 PY 1993 VL 62 IS 23 BP 3004 EP 3006 DI 10.1063/1.109171 PG 3 WC Physics, Applied SC Physics GA LE985 UT WOS:A1993LE98500036 ER PT J AU HUGHES, ML TEDESCO, JW ROSS, CA AF HUGHES, ML TEDESCO, JW ROSS, CA TI NUMERICAL-ANALYSIS OF HIGH-STRAIN RATE SPLITTING-TENSILE TESTS SO COMPUTERS & STRUCTURES LA English DT Article; Proceedings Paper CT 9TH ADINA ( AUTOMATIC DYNAMIC INCREMENTAL NONLINEAR ANALYSIS ) CONF : NONLINEAR FINITE ELEMENT ANALYSIS AND ADINA CY JUN 23-25, 1993 CL MIT, CAMBRIDGE, MA HO MIT AB Experimental splitting-tension tests were conducted on 2-in. diameter concrete specimens in a Split Hopkinson Pressure Bar at strain rates of 4.4, 10.6, and 14.7/sec. The specimens were instrumented with electrical resistance strain gages and break circuits to detect crack initiation and growth. Experimental results indicate that there is a shift of crack initiation time relative to the peak stress. Also, experimental strength vs strain rate data reveal that the dynamic tensile strength of concrete is significantly higher than the static tensile strength. A comprehensive numerical analysis was conducted on the splitting-tensile experiments to investigate the effects of varying the uniaxial tensile strength of the concrete on the crack initiation time, stress state, crack growth characteristics, and failure mode in the concrete specimens. The results of the numerical analyses are used to enhance the understanding of concrete tensile strength strain rate sensitivity. C1 AUBURN UNIV,DEPT CIVIL ENGN,AUBURN,AL 36849. UNIV FLORIDA,GRAD ENGN CTR,EGLIN AFB,FL 32542. RP HUGHES, ML (reprint author), AIR FORCE CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403, USA. NR 29 TC 31 Z9 37 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7949 J9 COMPUT STRUCT JI Comput. Struct. PD JUN 3 PY 1993 VL 47 IS 4-5 BP 653 EP 671 DI 10.1016/0045-7949(93)90349-I PG 19 WC Computer Science, Interdisciplinary Applications; Engineering, Civil SC Computer Science; Engineering GA LJ459 UT WOS:A1993LJ45900013 ER PT J AU STANTON, CL PAIGE, HL SCHWARTZ, M AF STANTON, CL PAIGE, HL SCHWARTZ, M TI ABINITIO STUDY OF MOLECULAR-GEOMETRY AND THE TORSIONAL POTENTIAL IN PERFLUORO(ETHYL METHYL-ETHER) SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID GAUSSIAN-BASIS SETS; ORBITAL METHODS; ENERGIES AB Molecular geometries, energies, and vibrational frequencies for equilibrium and transition-state conformations of perfluoro(ethyl methyl ether) have been calculated using ab initio molecular orbital theory. Geometries were optimized at the 6-31G(d) level, and single-point energies were also obtained with the 6-311G(d) basis set. MP2 correlation energies were calculated with both bases. Examination of the potential energy surface reveals that a distorted twist-trans structure is the lowest energy conformation. The gauche conformer has an unexpectedly narrow and high-energy minimum, separated from the twist-trans structure by a low torsional barrier. The published explanation for the helical structure of perfluorobutane1,2 is supported by this work and is extended in order to explain the distortion in the gauche-trans transition-state angle. Vibrational frequencies are used to confirm saddle points and are reported for all conformers. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,DAYTON,OH 45433. UNIV N TEXAS,DEPT CHEM,DENTON,TX 76203. NR 16 TC 10 Z9 10 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 3 PY 1993 VL 97 IS 22 BP 5901 EP 5904 DI 10.1021/j100124a021 PG 4 WC Chemistry, Physical SC Chemistry GA LE951 UT WOS:A1993LE95100021 ER PT J AU TAVARES, TS MCCUNE, JE AF TAVARES, TS MCCUNE, JE TI AERODYNAMICS OF MANEUVERING SLENDER WINGS WITH LEADING-EDGE SEPARATION SO AIAA JOURNAL LA English DT Article AB A nonlinear theoretical technique is presented for treating the unsteady aerodynamics of low-aspect-ratio wings with leading-edge separation in incompressible flow. Cases are treated for wings in steady flight and for those undergoing severe unsteady maneuver. The treatment extends classical slender wing theory to allow for large-scale motion along with possibly asymmetric wake development. Calculated results are presented for a variety of cases and are compared with related analyses and experiments. Examples studied include wings of delta and clipped-delta planform. Flight conditions and maneuvers treated included sideslip, sudden plunge, and rapid constant-rate roll at zero angle of attack. New results are interpreted in the light of wake history effects, a framework which provides a simplified means of interpreting the aerodynamic response in the severe maneuver case. The ability of the calculations to reproduce observed phenomena under a wide variety of conditions supports the practical usefulness of the extended slender wing treatment as a tool for gaining increased insight into the unsteady interaction between low-aspect-ratio wings and their wakes. C1 MIT,DEPT AERONAUT & ASTRONAUT,CAMBRIDGE,MA 02139. RP TAVARES, TS (reprint author), USAF,WRIGHT AERONAUT LABS,DIV AEROMECH,COMPUTAT FLUID DYNAM BRANCH,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 35 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 0001-1452 J9 AIAA J JI AIAA J. PD JUN PY 1993 VL 31 IS 6 BP 977 EP 986 DI 10.2514/3.49043 PG 10 WC Engineering, Aerospace SC Engineering GA LH421 UT WOS:A1993LH42100001 ER PT J AU SMITH, RA PALAZOTTO, AN AF SMITH, RA PALAZOTTO, AN TI COMPARISON OF 8 VARIATIONS OF A HIGHER-ORDER THEORY FOR CYLINDRICAL-SHELLS SO AIAA JOURNAL LA English DT Article; Proceedings Paper CT 33RD CONF ON STRUCTURES, STRUCTURAL DYNAMICS, AND MATERIALS CY APR 13-15, 1992 CL DALLAS, TX SP AMER INST AERONAUT & ASTRONAUT, AMER SOC MECH ENGINEERS ASTRONAUT SOC CANADA, AMER SOC CIVIL ENGINEERS, AMER HELICOPTER SOC ID LAMINATED ANISOTROPIC SHELLS; MODERATE ROTATION THEORY; FINITE-ELEMENT; COMPOSITE; SHEAR AB Eight variations of a geometrically nonlinear higher-order transverse shear deformation (HTSD) theory were developed for composite shells. Three attributes were varied to produce the eight variations. These attributes included: 1) the order of the thickness expansions used to approximate the shell shape factors, 2) the order of the assumed linear displacement field, and 3) the nonlinearity of transverse shear strain. Several cylindrical shell problems were investigated using a finite element code with a 36-degree-of-freedom cylindrical shell element. MACSYMA, a symbolic manipulation code, was used to formulate the element independent stiffness arrays for each variation of the theory. When all nonlinear strain displacement terms for transverse shear were included for thin shallow isotropic cylindrical shells, the theory predicted a more flexible response during collapse. Higher-order thickness expansions had negligible effect on results. For deep shells nonlinearity was limited to in-plane strain-displacement relations. This quasinonlinear HTSD theory produced a more flexible response during collapse when the order of approximation of shell shape factor terms was increased. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 16 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 0001-1452 J9 AIAA J JI AIAA J. PD JUN PY 1993 VL 31 IS 6 BP 1125 EP 1132 DI 10.2514/3.11737 PG 8 WC Engineering, Aerospace SC Engineering GA LH421 UT WOS:A1993LH42100021 ER PT J AU CANFIELD, RA AF CANFIELD, RA TI DESIGN OF FRAMES AGAINST BUCKLING USING A RAYLEIGH QUOTIENT APPROXIMATION SO AIAA JOURNAL LA English DT Article; Proceedings Paper CT 33RD CONF ON STRUCTURES, STRUCTURAL DYNAMICS, AND MATERIALS CY APR 13-15, 1992 CL DALLAS, TX SP AMER INST AERONAUT & ASTRONAUT, AMER SOC MECH ENGINEERS ASTRONAUT SOC CANADA, AMER SOC CIVIL ENGINEERS, AMER HELICOPTER SOC ID OPTIMIZATION; CONSTRAINTS; STABILITY AB A Rayleigh quotient approximation is applied to the design of structures while guarding against elastic instability. It approximates buckling eigenvalues by separately estimating the modal strain energy due to the linear and geometric stiffness of the structure. Previously used during structural optimization for the fundamental natural eigenvalue, the Rayleigh quotient approximation is derived for the buckling design problem for the first time. The critical buckling load is found by solving the eigenvalue problem that arises by considering the geometric nonlinearity of the deforming structure. Rayleigh's principle is used to justify the choice of intermediate design variables for approximating terms in the Rayleigh quotient. A truss model illustrates the importance of the design space chosen for approximating the modal strain energy. A beam-column, two plane frames, and a space frame are used to verify the formulation. Special attention is paid to difficult bimodal optima. RP CANFIELD, RA (reprint author), USAF,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. RI Canfield, Robert/C-1798-2012 OI Canfield, Robert/0000-0003-3679-2815 NR 14 TC 11 Z9 11 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUN PY 1993 VL 31 IS 6 BP 1143 EP 1149 DI 10.2514/3.11739 PG 7 WC Engineering, Aerospace SC Engineering GA LH421 UT WOS:A1993LH42100023 ER PT J AU CHAIKEN, SR YOUNG, RK AF CHAIKEN, SR YOUNG, RK TI INSPECTION TIME AND INTELLIGENCE - ATTEMPTS TO ELIMINATE THE APPARENT MOVEMENT STRATEGY SO AMERICAN JOURNAL OF PSYCHOLOGY LA English DT Article ID MOTION; IQ AB Inspection time (IT) indexes the ability to discriminate between test stimuli under conditions of varied and limited exposure time. Two experiments were conducted to replicate and extend previous findings. Experiment 1 replicated the basic finding of an IT/IQ relationship and the finding of a difference between subjects reporting use and nonuse of an apparent-movement strategy, the use of which diminishes the IT/IQ relationship. Experiment 2 varied a number of factors in attempts to remove the use of the apparent-movement strategy. Although none of these manipulations had the predicted effect of reducing strategy use, conditions were found in which subjects reporting strategy use showed more robust correlations to IQ than had been previously reported. In addition, significant task effects, practice effects, and bias effects are reported and discussed. C1 UNIV TEXAS,DEPT PSYCHOL,AUSTIN,TX 78713. USAF,ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX 78235. NR 20 TC 18 Z9 21 U1 0 U2 0 PU UNIV ILLINOIS PRESS PI CHAMPAIGN PA 1325 S OAK ST, CHAMPAIGN, IL 61820 SN 0002-9556 J9 AM J PSYCHOL JI Am. J. Psychol. PD SUM PY 1993 VL 106 IS 2 BP 191 EP 210 DI 10.2307/1423167 PG 20 WC Psychology, Multidisciplinary SC Psychology GA LG672 UT WOS:A1993LG67200002 ER PT J AU MORAN, CA KOSS, MN AF MORAN, CA KOSS, MN TI RHABDOMYOMATOUS THYMOMA SO AMERICAN JOURNAL OF SURGICAL PATHOLOGY LA English DT Article DE THYMUS; RHABDOMYOMATOUS THYMOMA ID MYOID CELLS; THYMUS AB A case of a thymic neoplasm with a prominent rhabdomyomatous component is presented. The patient, a 21-year-old asymptomatic man, had an anterior mediastinal mass found on routine chest radiographs. Surgical resection of an encapsulated anterior mediastinal mass was performed. Histologically, two distinct cell populations were apparent, one epithelial and the other myoid. Immunohistochemical studies using antibodies for keratin decorated the epithelial component of this lesion; antibodies for myoglobin and desmin strongly stained the myoid component. RP MORAN, CA (reprint author), USAF,INST PATHOL,DEPT PULM & MEDIASTINAL PATHOL,ROOM 3017,WASHINGTON,DC 20306, USA. NR 10 TC 26 Z9 26 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0147-5185 J9 AM J SURG PATHOL JI Am. J. Surg. Pathol. PD JUN PY 1993 VL 17 IS 6 BP 633 EP 636 DI 10.1097/00000478-199306000-00012 PG 4 WC Pathology; Surgery SC Pathology; Surgery GA LD355 UT WOS:A1993LD35500012 PM 8333562 ER PT J AU MARTINEZ, DG AF MARTINEZ, DG TI SCREENING FOR RENOVASCULAR HYPERTENSION SO ANNALS OF INTERNAL MEDICINE LA English DT Letter ID 10 YEARS EXPERIENCE RP MARTINEZ, DG (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER COLL PHYSICIANS PI PHILADELPHIA PA INDEPENDENCE MALL WEST 6TH AND RACE ST, PHILADELPHIA, PA 19106-1572 SN 0003-4819 J9 ANN INTERN MED JI Ann. Intern. Med. PD JUN 1 PY 1993 VL 118 IS 11 BP 905 EP 905 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA LD252 UT WOS:A1993LD25200016 PM 8480968 ER PT J AU MORK, MR WATSON, LA AF MORK, MR WATSON, LA TI PREVALENCE OF CORRECTIVE LENS WEAR IN ROYAL-AUSTRALIAN-AIR-FORCE FLIGHT CREWS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID PILOTS AB This study was undertaken to determine what effect the Royal Australian Air Force's (RAAF) restrictive entry visual standards have on the prevalence of corrective lens wear in its aircrew. A 1 00% review of RAAF aircrew medical documents was conducted to determine the prevalence of corrective lens wear (spectacles and contact lenses) among pilots, navigators, flight engineers, loadmasters, and airborne electronics analysts. The prevalence of corrective lens wear by aircrew in the RAAF was then compared to that published for their counterparts in the USAF. Entry visual refraction standards for the RAAF and USAF were compared and related to the prevalence of corrective lens wear in each Service. Age data for RAAF aircrew were also compared to the requirement to wear corrective lenses. The study's findings indicate that the RAAF's restrictive visual refraction standards for entry into aircrew training programs significantly reduced the prevalence of corrective lens wear among all crew positions when compared to the USAF. A discussion is presented which relates the medical wastage associated with a restrictive visual standards policy and the operational implications of such a policy. RP MORK, MR (reprint author), PACAF,SGPA,COMMAND SURGEONS OFF,DIV AEROSP MED,25 E ST,STE F318,HICKAM AFB,HI 96853, USA. NR 17 TC 2 Z9 2 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1993 VL 64 IS 6 BP 541 EP 545 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LE075 UT WOS:A1993LE07500011 PM 8338503 ER PT J AU WIANS, FH NORTON, JT WIREBAUGH, SR AF WIANS, FH NORTON, JT WIREBAUGH, SR TI FALSE-POSITIVE SERUM TRICYCLIC ANTIDEPRESSANT SCREEN WITH CYPROHEPTADINE SO CLINICAL CHEMISTRY LA English DT Letter ID OVERDOSE C1 WILFORD HALL USAF MED CTR,DEPT PHARM,SAN ANTONIO,TX 78236. RP WIANS, FH (reprint author), WILFORD HALL USAF MED CTR,DEPT PATHOL,SAN ANTONIO,TX 78236, USA. NR 8 TC 12 Z9 12 U1 1 U2 1 PU AMER ASSOC CLINICAL CHEMISTRY PI WASHINGTON PA 2101 L STREET NW, SUITE 202, WASHINGTON, DC 20037-1526 SN 0009-9147 J9 CLIN CHEM JI Clin. Chem. PD JUN PY 1993 VL 39 IS 6 BP 1355 EP 1356 PG 2 WC Medical Laboratory Technology SC Medical Laboratory Technology GA LF992 UT WOS:A1993LF99200051 PM 8504557 ER PT J AU WEIMAN, DS FERDINAND, FD BOLTON, JWR BROSNAN, KM WHITMAN, GJR AF WEIMAN, DS FERDINAND, FD BOLTON, JWR BROSNAN, KM WHITMAN, GJR TI PERIOPERATIVE RESPIRATORY MANAGEMENT IN CARDIAC-SURGERY SO CLINICS IN CHEST MEDICINE LA English DT Article ID OPEN-HEART-SURGERY; PULMONARY VASCULAR-RESISTANCE; ARTERY BYPASS-SURGERY; PHRENIC-NERVE PALSY; SODIUM-NITROPRUSSIDE; AIRWAY PRESSURE; TRANSPLANTATION; INJURY; ATELECTASIS; PROSTAGLANDIN-E1 C1 MED COLL PENN,DEPT SURG,PHILADELPHIA,PA 19129. MED COLL PENN,DEPT ANESTHESIA,PHILADELPHIA,PA 19129. UNIV TEXAS,HLTH SCI CTR,DEPT CARDIOTHORAC SURG,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RP WEIMAN, DS (reprint author), MED COLL PENN,DIV CARDIOTHORAC SURG,3300 HENRY AVE,PHILADELPHIA,PA 19129, USA. NR 45 TC 7 Z9 7 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0272-5231 J9 CLIN CHEST MED JI Clin. Chest Med. PD JUN PY 1993 VL 14 IS 2 BP 283 EP 292 PG 10 WC Respiratory System SC Respiratory System GA LF877 UT WOS:A1993LF87700008 PM 8519173 ER PT J AU BOLTON, JWR WEIMAN, DS AF BOLTON, JWR WEIMAN, DS TI PHYSIOLOGY OF LUNG RESECTION SO CLINICS IN CHEST MEDICINE LA English DT Article ID MEDIAN STERNOTOMY; MUSCLE PARALYSIS; PULMONARY RESECTION; RIB CAGE; DIAPHRAGM; ANESTHESIA; VENTILATION; GROWTH; TRANSPLANTATION; DIMENSIONS C1 UNIV TEXAS,HLTH SCI CTR,DEPT CARDIOTHORAC SURG,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RP BOLTON, JWR (reprint author), MED COLL PENN,DIV CARDIOTHORAC SURG,3300 HENRY AVE,PHILADELPHIA,PA 19129, USA. NR 83 TC 12 Z9 13 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0272-5231 J9 CLIN CHEST MED JI Clin. Chest Med. PD JUN PY 1993 VL 14 IS 2 BP 293 EP 303 PG 11 WC Respiratory System SC Respiratory System GA LF877 UT WOS:A1993LF87700009 PM 8519174 ER PT J AU PUGH, JA JACOBSON, JM VANHEUVEN, WAJ WATTERS, JA TULEY, MR LAIRSON, DR LORIMOR, RJ KAPADIA, AS VELEZ, R AF PUGH, JA JACOBSON, JM VANHEUVEN, WAJ WATTERS, JA TULEY, MR LAIRSON, DR LORIMOR, RJ KAPADIA, AS VELEZ, R TI SCREENING FOR DIABETIC-RETINOPATHY - THE WIDE-ANGLE RETINAL CAMERA SO DIABETES CARE LA English DT Article ID MYDRIATIC FUNDUS PHOTOGRAPHY AB OBJECTIVE- To define the test characteristics of four methods of screening for diabetic retinopathy. RESEARCH DESIGN AND METHODS - Four screening methods (an exam by an ophthalmologist through dilated pupils using direct and indirect ophthalmoscopy, an exam by a physician's assistant through dilated pupils using direct ophthalmoscopy, a single 45-degrees retinal photograph without pharmacological dilation, and a set of three dilated 45-degrees retinal photographs) were compared with a reference standard of stereoscopic 30-degrees retinal photographs of seven standard fields read by a central reading center. Sensitivity, specificity, and positive and negative likelihood ratios were calculated after dichotomizing the retinopathy levels into none and mild nonproliferative versus moderate to severe nonproliferative and proliferative. Two sites were used. All patients with diabetes in a VA hospital outpatient clinic between June 1988 and May 1989 were asked to participate. Patients with diabetes identified from a laboratory list of elevated serum glucose values were recruited from a DOD medical center. RESULTS- The subjects (352) had complete exams excluding the exam by the physician's assistant that was added later. The sensitivities, specificities, and positive and negative likelihood ratios are as follows: ophthalmologist 0.33, 0.99, 72, 0.67; photographs without pharmacological dilation 0.61, 0.85, 4.1, 0.46; dilated photographs 0.81, 0.97, 24, 0.19; and physician's assistant 0.14, 0.99, 12, 0.87. CONCLUSIONS- Fundus photographs taken by the 45-degrees camera through pharmacologically dilated pupils and read by trained readers perform as well as ophthalmologists for detecting diabetic retinopathy. Physician extenders can effectively perform the photography with minimal training but would require more training to perform adequate eye exams. In this older population, many patients did not obtain adequate nonpharmacological dilation for use of the 45-degrees camera. C1 UNIV TEXAS,HLTH SCI CTR,DEPT MED,DIV GEN MED,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DEPT OPHTHALMOL,SAN ANTONIO,TX 78284. USAF,WILFORD HALL MED CTR,LACKLAND AFB,TX 78236. RP PUGH, JA (reprint author), AUDIE L MURPHY MEM VET ADM MED CTR,7400 MERTON MINTER BLVD,SAN ANTONIO,TX 78284, USA. OI Pugh, Jacqueline/0000-0003-4933-141X NR 28 TC 91 Z9 93 U1 0 U2 4 PU AMER DIABETES ASSOC PI ALEXANDRIA PA 1660 DUKE ST, ALEXANDRIA, VA 22314 SN 0149-5992 J9 DIABETES CARE JI Diabetes Care PD JUN PY 1993 VL 16 IS 6 BP 889 EP 895 DI 10.2337/diacare.16.6.889 PG 7 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA LD942 UT WOS:A1993LD94200004 PM 8100761 ER PT J AU GHONEM, H NICHOLAS, T PINEAU, A AF GHONEM, H NICHOLAS, T PINEAU, A TI ELEVATED-TEMPERATURE FATIGUE-CRACK GROWTH IN ALLOY-718 .2. EFFECTS OF ENVIRONMENTAL AND MATERIAL VARIABLES SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES LA English DT Article ID LOW-CYCLE FATIGUE; PROPAGATION BEHAVIOR; SUPERALLOY; EXPOSURE AB Observations concerning the effects of the environment and material variables on the crack growth process in alloy 718 are reviewed and analyzed on the basis of deformation characteristics in the crack tip region. The review of the role of material variables has focused on the effects of chemical composition and microstructure parameters including precipitate size and morphology as well as grain size and morphology. These analyses have suggested that the governing mechanism at the crack tip is the degree of homogeneity of plastic deformation and associated slip density. For conditions promoting homogeneous plastic deformation, with a high degree of slip density, the environmental damage contribution is shown to be limited, thus permitting the dominance of cyclic damage effects which are characterized by a transgranular crack growth mode and a lower crack growth rate. Under conditions leading to inhomogeneous plastic deformation and lower slip density the crack tip damage is described in terms of grain boundary oxidation and related intergranular fracture mode. Considering that the crack growth damage mechanism in alloy 718 ranges from fully cycle dependent to fully environment dependent, conflicting experimental observations under different operating conditions are examined and a sensitizing approach is suggested to increase the alloy resistance to environmental effects. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. ECOLE MINES PARIS,CTR MAT,F-91000 EVRY,FRANCE. RP GHONEM, H (reprint author), UNIV RHODE ISL,DEPT MECH ENGN & APPL MECH,MECH SOLIDS LAB,KINGSTON,RI 02881, USA. NR 52 TC 60 Z9 62 U1 1 U2 18 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 JUN PY 1993 VL 16 IS 6 BP 577 EP 590 DI 10.1111/j.1460-2695.1993.tb00103.x PG 14 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA LN114 UT WOS:A1993LN11400001 ER PT J AU LUGINBUHL, DR LOUI, MC AF LUGINBUHL, DR LOUI, MC TI HIERARCHIES AND SPACE MEASURES FOR POINTER MACHINES SO INFORMATION AND COMPUTATION LA English DT Article ID STORAGE MODIFICATION MACHINES; TIME C1 UNIV ILLINOIS,DEPT ELECT & COMP ENGN,URBANA,IL 61801. UNIV ILLINOIS,COORDINATED SCI LAB,URBANA,IL 61801. NATL SCI FDN,WASHINGTON,DC 20550. UNIV MARYLAND,INST ADV COMP STUDIES,COLL PK,MD 20742. RP LUGINBUHL, DR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0890-5401 J9 INFORM COMPUT JI Inf. Comput. PD JUN PY 1993 VL 104 IS 2 BP 253 EP 270 DI 10.1006/inco.1993.1032 PG 18 WC Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA LH117 UT WOS:A1993LH11700005 ER PT J AU RAMAKRISHNAN, N MCCLAIN, DE CATRAVAS, GN AF RAMAKRISHNAN, N MCCLAIN, DE CATRAVAS, GN TI MEMBRANES AS SENSITIVE TARGETS IN THYMOCYTE APOPTOSIS SO INTERNATIONAL JOURNAL OF RADIATION BIOLOGY LA English DT Article ID KILLS IMMATURE THYMOCYTES; KINASE-C INVOLVEMENT; DNA FRAGMENTATION; VITAMIN-E; GAMMA-IRRADIATION; PLASMA-MEMBRANE; RAT THYMOCYTES; CELL-DEATH; RADIATION; INDUCTION AB The role of cellular membranes in thymocyte apoptosis has been examined. Trolox, a water soluble analogue of vitamin E and inhibitor of membrane damage, inhibits DNA fragmentation in thymocytes exposed to gamma-radiation. Trolox is most effective in inhibiting DNA fragmentation when added to cells within 30 min post-irradiation. Exposure to trolox only during irradiation did not prevent DNA fragmentation, suggesting that it does not work by scavenging free radicals generated during radiation exposure. Incubation of the irradiated cell suspension with trolox for 2 h post-irradiation was sufficient to prevent DNA fragmentation measured at 24h in irradiated cells. This suggests that trolox irreversibly inhibits a cellular lesion required for apoptosis. The induction of DNA fragmentation appears to be related to a concurrent, pronounced flow of Ca2+ into the cell. At 3 h post-irradiation the amount of Ca2+ in irradiated thymocytes was more than twice that of unirradiated thymocytes. Membrane damage has been shown to affect the transport of Ca2+. Trolox treatment completely blocked the radiation-induced influx of Ca2+ into the thymocytes. These results suggest that membrane damage is a critical lesion that is involved in DNA fragmentation in thymocyte apoptosis. C1 USAF, RADIOBIOL RES INST, DEPT RADIAT BIOCHEM, BETHESDA, MD 20889 USA. RP RAMAKRISHNAN, N (reprint author), USAF, RADIOBIOL RES INST, CHAIR SCI, 8901 WISCONSIN AVE, BETHESDA, MD 20889 USA. NR 51 TC 103 Z9 105 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0955-3002 J9 INT J RADIAT BIOL JI Int. J. Radiat. Biol. PD JUN PY 1993 VL 63 IS 6 BP 693 EP 701 DI 10.1080/09553009314552091 PG 9 WC Biology; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA LJ482 UT WOS:A1993LJ48200004 PM 8100256 ER PT J AU MELCHER, GP MCGOUGH, DA FOTHERGILL, AW NORRIS, C RINALDI, MG AF MELCHER, GP MCGOUGH, DA FOTHERGILL, AW NORRIS, C RINALDI, MG TI DISSEMINATED HYALOHYPHOMYCOSIS CAUSED BY A NOVEL HUMAN PATHOGEN, FUSARIUM-NAPIFORME SO JOURNAL OF CLINICAL MICROBIOLOGY LA English DT Article ID BONE-MARROW TRANSPLANTATION; FUNGAL INFECTION; LEUKEMIA; PATIENT; SOLANI; HOST AB Fusarium species are saprophytic molds and important plant pathogens, although they are increasingly recognized as agents of human mycosis. Frequently, the infection is superficial. Deep tissue infection may occur as an opportunistic hyalohyphomycosis, and wide dissemination is common in immunocompromised hosts. We describe a novel case of disseminated hyalohyphomycosis caused by F. napiforme in a patient with acute myelogenous leukemia. The clinical manifestations of this infection were similar to those attributed to infection with other species. In vitro susceptibility testing demonstrated resistance to amphotericin B and flucytosine, and progressive infection was documented until recovery of granulocyte function. The distinguishing clinical mycologic characteristics of this opportunistic mold are the unique turnip- or lemon-shaped microconidia. F. napiforme is a new agent of hyalohyphomycosis, further emphasizing the importance of Fusarium species as opportunistic molds. C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,FUNGUS TESTING LAB,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. AUDIE L MURPHY MEM VET ADM MED CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. RP MELCHER, GP (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236, USA. NR 34 TC 24 Z9 24 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0095-1137 J9 J CLIN MICROBIOL JI J. Clin. Microbiol. PD JUN PY 1993 VL 31 IS 6 BP 1461 EP 1467 PG 7 WC Microbiology SC Microbiology GA LC728 UT WOS:A1993LC72800012 PM 8314987 ER PT J AU FRANKE, ME LYNCH, PM HEALEY, AJ AF FRANKE, ME LYNCH, PM HEALEY, AJ TI A 50-YEAR HISTORY OF THE DYNAMIC-SYSTEMS AND CONTROL DIVISION SO JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME LA English DT Article AB The Division began as a technical committee in 1936 and became the Industrial Instruments and Regulators Division in 1943. Significant events and broadening technology that led to Division name changes and evolution are described. The Division received its current name in 1977. The leadership role of the Division in the field of dynamic systems and control is outlined. Objectives, scope, and activities of the Division are discussed, and statistical data and trends are given. C1 TULANE UNIV,NEW ORLEANS,LA 70118. USN,POSTGRAD SCH,MONTEREY,CA 93943. RP FRANKE, ME (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 1 Z9 1 U1 1 U2 1 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0022-0434 J9 J DYN SYST-T ASME JI J. Dyn. Syst. Meas. Control-Trans. ASME PD JUN PY 1993 VL 115 IS 2B BP 223 EP 233 DI 10.1115/1.2899061 PG 11 WC Automation & Control Systems; Instruments & Instrumentation SC Automation & Control Systems; Instruments & Instrumentation GA LH132 UT WOS:A1993LH13200003 ER PT J AU BARKA, NE HADFIELD, T PATNAIK, M SCHWARTZMAN, WA PETER, JB AF BARKA, NE HADFIELD, T PATNAIK, M SCHWARTZMAN, WA PETER, JB TI EIA FOR DETECTION OF ROCHALIMAEA-HENSELAE - REACTIVE IGG, IGM, AND IGA ANTIBODIES IN PATIENTS WITH SUSPECTED CAT-SCRATCH DISEASE SO JOURNAL OF INFECTIOUS DISEASES LA English DT Letter C1 SPECIALTY LABS INC,2211 MICHIGAN AVE,SANTA MONICA,CA 90404. USAF,INST PATHOL,WASHINGTON,DC 20330. VET ADM MED CTR,SEPULVEDA,CA 91343. NR 6 TC 74 Z9 74 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 JUN PY 1993 VL 167 IS 6 BP 1503 EP 1504 PG 2 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA LD694 UT WOS:A1993LD69400046 PM 8501350 ER PT J AU GOETZ, RL KERR, WR SEMIATIN, SL AF GOETZ, RL KERR, WR SEMIATIN, SL TI MODELING OF THE CONSOLIDATION OF CONTINUOUS-FIBER METAL-MATRIX COMPOSITES VIA FOIL-FIBER-FOIL TECHNIQUES SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article DE CONSOLIDATION; FEM PROCESS MODELING; FOIL-FIBER-FOIL; HOT ISOSTATIC PRESSING; METAL MATRIX COMPOSITES AB The consolidation of metal-matrix composites (MMC) via hot isostatic pressing (HIP) of foil-fiber-foil layups has been investigated using finite element method (FEM) metal flow analysis. For this purpose, the deformation pattern for various fiber arrangements was determined using representative unit cells to describe extremes in behavior. For a given fiber architecture, the consolidation time was found to be heavily dependent on the ratio of the HIP pressure to average flow stress and the friction conditions at the matrix-fiber interface. The specific influence of material properties such as the rate sensitivity of the flow stress appears to enter only as a second order effect. The FEM solutions were used to construct HIP diagrams delineating temperature-time-pressure combinations for full composite consolidation. Laboratory trials on subscale foil-fiber coupons were used to validate the FEM predictions. C1 WRIGHT LAB,MLLN,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH. RP GOETZ, RL (reprint author), UES INC,DAYTON,OH, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 12 TC 12 Z9 12 U1 0 U2 1 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD JUN PY 1993 VL 2 IS 3 BP 333 EP 340 DI 10.1007/BF02648819 PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA LK084 UT WOS:A1993LK08400002 ER PT J AU TAYLOR, AF LALLY, KP CHWALS, WJ MCCURNIN, DC GERSTMANN, DR SHADE, RA DELEMOS, RA AF TAYLOR, AF LALLY, KP CHWALS, WJ MCCURNIN, DC GERSTMANN, DR SHADE, RA DELEMOS, RA TI HORMONAL RESPONSE OF THE PREMATURE PRIMATE TO OPERATIVE STRESS SO JOURNAL OF PEDIATRIC SURGERY LA English DT Article; Proceedings Paper CT 25TH ANNUAL MEETING OF THE PACIFIC ASSOC OF PEDIATRIC SURGEONS CY MAY 17-21, 1992 CL ALBUQUERQUE, NM SP PACIFIC ASSOC PEDIAT SURGEONS DE PATENT DUCTUS ARTERIOSUS; HORMONAL RESPONSE TO SURGERY ID PLASMA-CATECHOLAMINES; SURGICAL STRESS; CARDIAC-SURGERY; ANESTHESIA; ENDOCRINE; INFANTS C1 UTAH VALLEY REG MED CTR,DEPT NEONATOL,PROVO,UT. SW FDN BIOMED RES,DEPT PHYSIOL & MED,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DIV PEDIAT SURG,HOUSTON,TX 77225. BAYLOR COLL MED,DIV PEDIAT SURG,HOUSTON,TX 77030. WILFORD HALL USAF MED CTR,DEPT NEONATOL,LACKLAND AFB,TX 78236. UNIV SO CALIF,DEPT NEONATOL,LOS ANGELES,CA 90089. FU NHLBI NIH HHS [SCOR HL 36536] NR 16 TC 7 Z9 7 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0022-3468 J9 J PEDIATR SURG JI J. Pediatr. Surg. PD JUN PY 1993 VL 28 IS 6 BP 844 EP 846 PG 3 WC Pediatrics; Surgery SC Pediatrics; Surgery GA LH243 UT WOS:A1993LH24300023 PM 8331518 ER PT J AU MEALEY, BL RASCH, MS BRAUN, JC FOWLER, CB AF MEALEY, BL RASCH, MS BRAUN, JC FOWLER, CB TI INCISIVE CANAL CYSTS RELATED TO PERIODONTAL OSSEOUS DEFECTS - CASE-REPORTS SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE CYSTS; INCISAL CANAL; CYSTS; NASOPALATINE DUCT ID NASOPALATINE DUCT CYST AB THE INCISIVE CANAL CYST is the most common non-odontogenic cyst of the oral cavity. While the cyst has frequently been described, the relationship between the lesion and adjacent periodontal osseous defects has rarely been reported. This paper describes the occurrence and treatment of incisive canal cysts in two patients with severe adult periodontitis on maxillary incisor teeth. RP MEALEY, BL (reprint author), WILFORD HALL USAF MED CTR,SDT,DEPT PERIODONT,2450 PEPPERRELL ST,LACKLAND AFB,TX 78236, USA. NR 25 TC 7 Z9 7 U1 0 U2 0 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD JUN PY 1993 VL 64 IS 6 BP 571 EP 574 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LG977 UT WOS:A1993LG97700011 PM 8336257 ER PT J AU FOGELMAN, V FISCHMAN, HR HORMAN, JT GRIGOR, JK AF FOGELMAN, V FISCHMAN, HR HORMAN, JT GRIGOR, JK TI EPIDEMIOLOGIC AND CLINICAL CHARACTERISTICS OF RABIES IN CATS SO JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION LA English DT Article DE FELINE SPECIES; RABIES; EPIDEMIOLOGY ID UNITED-STATES; 4 CATS; VACCINE AB The epizootic of rabies in raccoons in Maryland has been accompanied by 129 confirmed cases of rabies in cats from Jan 1, 1983 to Sept 30, 1992 and only 12 cases in dogs. An epidemiologic and clinical study of rabies in cats was conducted for the period Jan 1, 1983 to May 31, 1986. Only 3 of 31 rabid cats had a history of being currently vaccinated against rabies, and 13 were of unknown ownership. A history of prior wound or injury within 6 months of onset of signs of rabies was reported in 11 of the cats and most of these had a wound in a hind limb. The median interval between reporting of a wound and a development of rabies was 4 to 6 weeks. Rabies in cats is difficult to diagnose in the early stages and, of the 14 cats examined by a veterinarian, only 3 were believed to have rabies on initial examination. Major signs of rabies in cats reported by veterinarians included behavior change, gait abnormality, strange or unusual look in the eyes, and a wound within the preceding 6 months. Owners reported increased frequency of vocalization as an early sign. Postexposure treatment was given to 194 human beings including 63 veterinarians or their personnel, The estimated cost of postexposure biologics was $68,000. C1 MARYLAND DEPT HLTH & MENTAL HYG,CTR VET PUBL HLTH,COMMUNITY HLTH SURVEILLANCE & LABS ADM,BALTIMORE,MD 21201. USAF,WASHINGTON,DC 20330. JOHNS HOPKINS UNIV,SCH HYG & PUBL HLTH,DEPT EPIDEMIOL,BALTIMORE,MD 21205. MARYLAND DEPT HLTH & MENTAL HYG,AIDS ADM,EPIDEMIOL & PREVENT PROGRAM,BALTIMORE,MD 21201. NR 37 TC 11 Z9 12 U1 2 U2 5 PU AMER VETERINARY MEDICAL ASSOC PI SCHAUMBURG PA 1931 N MEACHAM RD SUITE 100, SCHAUMBURG, IL 60173-4360 SN 0003-1488 J9 J AM VET MED ASSOC JI J. Am. Vet. Med. Assoc. PD JUN 1 PY 1993 VL 202 IS 11 BP 1829 EP 1833 PG 5 WC Veterinary Sciences SC Veterinary Sciences GA LD946 UT WOS:A1993LD94600021 PM 8320150 ER PT J AU ARRIAGA, MA BRACKMANN, DE HITSELBERGER, WE AF ARRIAGA, MA BRACKMANN, DE HITSELBERGER, WE TI EXTENDED MIDDLE FOSSA RESECTION OF PETROCLIVAL AND CAVERNOUS SINUS NEOPLASMS SO LARYNGOSCOPE LA English DT Article ID CEREBELLOPONTINE ANGLE; CRANIAL FOSSA; SURGERY C1 HOUSE EAR CLIN,2100 W 3RD ST,1ST FLOOR,LOS ANGELES,CA 90057. ST VINCENTS HOSP,DEPT NEUROSURG,LOS ANGELES,CA. WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236. NR 7 TC 12 Z9 15 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD JUN PY 1993 VL 103 IS 6 BP 693 EP 698 PG 6 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA LG818 UT WOS:A1993LG81800020 PM 8502105 ER PT J AU SOCCI, EP FARMER, BL BUNNING, TJ PACHTER, R ADAMS, WW AF SOCCI, EP FARMER, BL BUNNING, TJ PACHTER, R ADAMS, WW TI MOLECULAR-DYNAMICS AND X-RAY-SCATTERING SIMULATIONS OF CYCLIC SILOXANE-BASED LIQUID-CRYSTAL MESOGENS SO LIQUID CRYSTALS LA English DT Article ID GROUND-STATES; POLYMERS; POLYSILOXANES; STORAGE; MINIMIZATION; PARAMETERS; BIPHENYL; ENERGY AB Molecular dynamics simulations of cyclic siloxane-based liquid crystals offer new insights into the conformational flexibility of these materials. Interdigitation between the cholesteryl-4'-allyloxybenzoate and biphenyl-4'-allyloxybenzoate mesogens pendant on the cyclic siloxane ring is observed in the simulated structures. All molecular models considered viz. disc, cone, and cylinder, display a large conformational flexibility, which is important regarding the liquid crystalline phase behavior. The disc molecular model exhibits the largest flexibility as indicated by mean dihedral angles and their range for certain principal torsions, evaluated from the molecular dynamics simulations. Results from the dynamics simulations of cylinder molecular pairs indicate a significant amount of conformational flexibility in the siloxane rings. The degree of interdigitation between mesogens is dependent on the flexibility of the siloxane rings, as shown by calculations for a fixed ring system resulting in less interdigitation, also reflected in calculated X-ray scattering sections along the starting molecular direction. Weaker molecular transforms were observed for the non-fixed system due to a lack of boundary conditions. In general, the qualitative agreement of the starting structure's reflections and those shown by the experimental data is encouraging. C1 WRIGHT LAB,MAT DIRECTORATE,WL MLPJ,WRIGHT PATTERSON AFB,OH 45433. UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903. UNIV CONNECTICUT,DEPT CHEM ENGN,STORRS,CT 06268. RI Adams, Wade/A-7305-2010 NR 56 TC 8 Z9 8 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0267-8292 J9 LIQ CRYST JI Liq. Cryst. PD JUN PY 1993 VL 13 IS 6 BP 811 EP 827 DI 10.1080/02678299308027295 PG 17 WC Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary SC Chemistry; Crystallography; Materials Science GA LL316 UT WOS:A1993LL31600006 ER PT J AU SEMIATIN, SL NEKKANTI, R ALAM, MK MCQUAY, PA AF SEMIATIN, SL NEKKANTI, R ALAM, MK MCQUAY, PA TI HOMOGENIZATION OF NEAR-GAMMA TITANIUM ALUMINIDES - ANALYSIS OF KINETICS AND PROCESS SCALEUP FEASIBILITY SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article AB The homogenization of ingot metallurgy near--gamma titanium aluminides was investigated with respect to the kinetics of dissolution of single-phase gamma grains during heat treatment in the alpha phase field as well the determination of a processing window for use in scaleup of such heat treatments for large production billets. Initially, homogenization treatments were conducted using small samples heated in a highly controllable, low thermal inertia heating device. Post heat-treatment metallography and microprobe analysis quantified the kinetics of dissolution and suggested that a reaction at the interface between the remnant gamma grains and the surrounding alpha matrix controlled homogenization. A reasonable fit to the measured kinetics was obtained by assuming a reaction rate proportional to the square of the difference between (1) the maximum possible aluminum concentration in the alpha phase in equilibrium with the gamma phase and (2) the actual aluminum concentration in the alpha phase during the dissolution process. Scaleup feasibility was established using both an approximate closed-form analytical solution and finite difference method calculations for the heating of round cylinders of various sizes and height-to-diameter ratios. The surface-to-center temperature differences derived from such calculations were used in conjunction with the measured homogenization kinetics to establish heating cycles that would produce homogenization of the entire billet while minimizing grain growth and exposure time at high temperature. C1 OHIO UNIV,DEPT MECH ENGN,ATHENS,OH 45701. RP SEMIATIN, SL (reprint author), WL MLLN,DIV CERAM,MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 25 TC 11 Z9 11 U1 0 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD JUN PY 1993 VL 24 IS 6 BP 1295 EP 1306 DI 10.1007/BF02668198 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA LF116 UT WOS:A1993LF11600009 ER PT J AU FIEDLER, ER AF FIEDLER, ER TI CHILD-ABUSE AND BASIC TRAINING - REPLY SO MILITARY MEDICINE LA English DT Letter RP FIEDLER, ER (reprint author), WILFORD HALL USAF MED CTR,CLIN PSYCHOL RES SERV,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUN PY 1993 VL 158 IS 6 BP A4 EP A4 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA LG142 UT WOS:A1993LG14200003 ER PT J AU EVERSON, ME AF EVERSON, ME TI CHINESE CHARACTER GLOSSARY - CHU,MML SO MODERN LANGUAGE JOURNAL LA English DT Book Review RP EVERSON, ME (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV WISCONSIN PRESS PI MADISON PA JOURNAL DIVISION, 114 N MURRAY ST, MADISON, WI 53715 SN 0026-7902 J9 MOD LANG J JI Mod. Lang. J. PD SUM PY 1993 VL 77 IS 2 BP 240 EP 241 DI 10.2307/328961 PG 2 WC Education & Educational Research; Linguistics SC Education & Educational Research; Linguistics GA LE838 UT WOS:A1993LE83800022 ER PT J AU BAROHN, RJ MCVEY, AL DIMAURO, S AF BAROHN, RJ MCVEY, AL DIMAURO, S TI ADULT ACID MALTASE DEFICIENCY SO MUSCLE & NERVE LA English DT Article DE ACID MALTASE DEFICIENCY; ALPHA-GLUCOSIDASE DEFICIENCY; POMPES DISEASE; SCAPULOPERONEAL SYNDROME AB A 30-year-old man was referred for neurologic evaluation because of elevated creatine kinase. He had noted symptoms of proximal arm and distal leg weakness for several years, and, on examination, he had weakness in a scapuloperoneal distribution. An electromyogram showed myotonic discharges in the paraspinous muscles, and a muscle biopsy revealed severe vacuolar myopathy. Biochemical analysis of muscle showed acid maltase deficiency. The patient's only brother had childhood-onset acid maltase deficiency and died of respiratory failure at age 27. Acid maltase deficiency may have heterogeneous presentations within a family, and adult AMD can present as a scapuloperoneal neuromuscular syndrome. C1 USAF,WILFORD HALL MED CTR,DEPT NEUROL,LACKLAND AFB,TX 78236. COLUMBIA PRESBYTERIAN MED CTR,DEPT NEUROL,NEW YORK,NY 10032. RP BAROHN, RJ (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT MED NEUROL,7703 FLOYD CURL RD,SAN ANTONIO,TX 78210, USA. NR 10 TC 42 Z9 43 U1 0 U2 1 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 JUN PY 1993 VL 16 IS 6 BP 672 EP 676 DI 10.1002/mus.880160614 PG 5 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA LD096 UT WOS:A1993LD09600013 PM 8502265 ER PT J AU BRASURE, LW PRINJA, AK AF BRASURE, LW PRINJA, AK TI TIME AND ENERGY-DEPENDENT RECOIL DISTRIBUTIONS IN MIXTURES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION BEAM MODIFICATION OF MATERIALS CY SEP 07-11, 1992 CL HEIDELBERG, GERMANY SP MAX PLANCK INST KERNPHYS HEIDELBERG, KERNFORSCHUNGSZENTRUM KARLSRUHE, UNIV HEIDELBERG, MAX PLANCK GESELL, MINIST WISSENSCH & KUNST LANDES BANDEN-HEMBERG, DEUT FORSCHUNGSGEMEINSCH, EUROPEAN MAT RES SOC, INT UNION PURE & APPL PHYS, ANATECH, BAYER ID TRANSPORT; EQUATION AB An approach based on linear transport theory is described here to model the transport of incident ions and recoil particles in complex target materials. Using the time and energy dependent Boltzmann Fokker-Planck (BFP) equation, we have numerically computed particle densities for two incident ion (oxygen and barium) species as well as for all recoil particle species, self-consistently, in the superconducting material YBa2Cu3O7. An advantage of our approach is that the scattering, recoil and energy deposition cross sections are computed once for each combination of incident ion and target material and a given (e.g., Universal) potential. These interaction cross sections are then used in the BFP code to study both time dependent (pulsed ion beam) and equilibrium (steady-state ion beam) scenarios. Pulsed mode results provide insight into the decay behavior of each recoil species and equilibrium spectra are obtained in steady state mode. Our numerical model also describes the partitioning of energy deposition amongst the atomic species as well as the fate of the incident ion and recoils in interstitial, substitution or replacement sites. C1 UNIV NEW MEXICO,DEPT CHEM & NUCL ENGN,ALBUQUERQUE,NM 87131. RP BRASURE, LW (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 12 TC 0 Z9 0 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 JUN PY 1993 VL 80-1 BP 146 EP 150 PN 1 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA LK380 UT WOS:A1993LK38000034 ER PT J AU ALVES, E DASILVA, MF EVANS, KR JONES, CR MELO, AA SOARES, JC AF ALVES, E DASILVA, MF EVANS, KR JONES, CR MELO, AA SOARES, JC TI LATTICE LOCATION OF ER IN GAAS AND AL0.5GA0.5AS LAYERS GROWN BY MBE ON (100) GAAS SUBSTRATES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION BEAM MODIFICATION OF MATERIALS CY SEP 07-11, 1992 CL HEIDELBERG, GERMANY SP MAX PLANCK INST KERNPHYS HEIDELBERG, KERNFORSCHUNGSZENTRUM KARLSRUHE, UNIV HEIDELBERG, MAX PLANCK GESELL, MINIST WISSENSCH & KUNST LANDES BANDEN-HEMBERG, DEUT FORSCHUNGSGEMEINSCH, EUROPEAN MAT RES SOC, INT UNION PURE & APPL PHYS, ANATECH, BAYER ID ERBIUM; PHOTOLUMINESCENCE; EPITAXY AB The lattice site location of Er in semiconducting materials received considerable interest because its 4I13/2-4I15/2 intra-4f shell luminescence, occurring at a wavelength of 1.54 mum, falls in the minimum absorption window for silica-based fibers. In the present work, results of a study of the lattice location of Er in GaAs:Er and Al0.5Ga0.5As:Er using the Rutherford backscattering/channeling method are presented. The GaAs:Er and Al0.5Ga0.5As:Er layers were approximately 1.6 mum thick and were grown by conventional elemental source molecular beam epitaxy on (100) GaAs substrates. These samples, with Er concentrations of the order of 10(19) to 10(20) cm-3, presented intense photoluminescence. The RBS/channeling results show that Er atoms are located in the tetrahedral interstitial site in GaAs: Er, and about 70% of the Er atoms are slightly displaced from that site in Al0.5Ga0.5As:Er, the rest being in substitutional sites. For comparison an epitaxial Al0.5Ga0.5As:Er layer with Er concentration of the order of 10(18) cm-3 which does not show photoluminescence has been analysed. In this case there is clear evidence that Er is substitutionally located. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE WL ELRA,WRIGHT PATTERSON AFB,OH 45433. UNIV LISBON,CTR FIS NUCL,P-1699 LISBON,PORTUGAL. RP ALVES, E (reprint author), LNETI,INST CIENCIAS & ENGN,DEPT FIS,P-2685 SACAVEM,PORTUGAL. RI Alves, Eduardo/K-2481-2013; OI Alves, Eduardo/0000-0003-0633-8937; Soares, Jose/0000-0001-5277-4575 NR 15 TC 8 Z9 8 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 JUN PY 1993 VL 80-1 BP 180 EP 183 DI 10.1016/0168-583X(93)96102-I PN 1 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA LK380 UT WOS:A1993LK38000041 ER PT J AU MCLEAN, DG SUTHERLAND, RL BRANT, MC BRANDELIK, DM FLEITZ, PA POTTENGER, T AF MCLEAN, DG SUTHERLAND, RL BRANT, MC BRANDELIK, DM FLEITZ, PA POTTENGER, T TI NONLINEAR ABSORPTION STUDY OF A C-60-TOLUENE SOLUTION SO OPTICS LETTERS LA English DT Article ID STATE; C60 AB Nonlinear absorption at 532 nm in a C60-toluene solution by using 8-ns and 30-ps laser pulses is reported. The transmittance for both pulse widths is fluence dependent. A five-level model of C60 is described that yields excellent agreement with both pulse-width data sets for incident fluences as high as approximately 1 J/cm2. Additional phenomena observed at higher fluences indicate that other mechanisms may be active and contribute to optical limiting in this regime. The application of C60 as an optical limiter material is C1 USAF,WRIGHT AERONAUT LABS,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP MCLEAN, DG (reprint author), SCI APPLICAT INT CORP,101 WOODMAN DR,DAYTON,OH 45431, USA. NR 12 TC 278 Z9 279 U1 2 U2 18 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 1 PY 1993 VL 18 IS 11 BP 858 EP 860 DI 10.1364/OL.18.000858 PG 3 WC Optics SC Optics GA LD517 UT WOS:A1993LD51700006 PM 19802295 ER PT J AU MEHTA, R LEE, CYC AF MEHTA, R LEE, CYC TI CHARACTERIZATION AND ANALYSIS OF DEFECTS IN EXTRUDED COAGULATED FILMS OF HETEROCYCLIC AROMATIC POLYMERS FOR NONLINEAR OPTICS STUDIES SO POLYMER ENGINEERING AND SCIENCE LA English DT Article ID FIBERS AB The high degree of electron delocalization in heterocyclic aromatic molecules makes this class of chemistry ideal for hyperpolarizability and NLO (nonlinear optics) polymer developments. This type of polymer is usually insoluble in common solvents and is not amenable to common optical film processing techniques like spin coating. A study of the approach in using an acidic solution extrusion followed by coagulation for optical quality film forming is reported in this paper. The polymers studied are: PBZT (poly (p-phenylene benzobisthiazole)); 6F-PBO (polybenzobisoxazole containing hexaflorinated moities); and Zytel 330 (an amorphous nylon). Some of the resulting films showed an improved optical quality while others showed an extremely poor optical quality over the films used in a previous study. The optically clear films, however, were not of wave-guiding quality. The defects in the films that would cause light scattering were characterized and the probable causes of these defects were discussed. The defects were: (a) optically inferior morphology, (b) micro-voids. (c) macro-voids, (d) solid particles, (e) lines in the transverse direction, and (f) lines in the machine direction. Identification and classification of these defects will help additional efforts in the future for improving the optical quality of heterocyclic aromatic polymer films. C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. ADTECH SYST RES INC,DAYTON,OH 45432. OI Mehta, Rajeev/0000-0001-9953-3031 NR 42 TC 3 Z9 3 U1 2 U2 5 PU SOC PLASTICS ENG INC PI BROOKFIELD CENTER PA 14 FAIRFIELD DR, BROOKFIELD CENTER, CT 06804-0403 SN 0032-3888 J9 POLYM ENG SCI JI Polym. Eng. Sci. PD JUN PY 1993 VL 33 IS 12 BP 764 EP 771 DI 10.1002/pen.760331207 PG 8 WC Engineering, Chemical; Polymer Science SC Engineering; Polymer Science GA LK148 UT WOS:A1993LK14800006 ER PT J AU JORDAN, DL AF JORDAN, DL TI NEWSPAPER EFFECTS ON POLICY PREFERENCES SO PUBLIC OPINION QUARTERLY LA English DT Article ID OPINION AB This research offers clear evidence that what is presented in the media influences the policy preferences of the American public. More important, it reconciles some earlier problems that led to an inability to determine the approximate relationships between television and newspaper information concerning policy. By correcting some methodological problems in earlier attempts to examine the impact of New York Times policy news, I am able to conclude that different actors or news sources do indeed have differential impacts on public opinion and that in both newspaper items and television broadcasts experts and commentators wield heavy influence. RP JORDAN, DL (reprint author), USAF ACAD,DEPT POLIT SCI,COLORADO SPRINGS,CO 80840, USA. NR 9 TC 30 Z9 30 U1 2 U2 7 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0033-362X J9 PUBLIC OPIN QUART JI Public Opin. Q. PD SUM PY 1993 VL 57 IS 2 BP 191 EP 204 DI 10.1086/269365 PG 14 WC Communication; Political Science; Social Sciences, Interdisciplinary SC Communication; Government & Law; Social Sciences - Other Topics GA LN661 UT WOS:A1993LN66100003 ER PT J AU KLUCZNIK, RP CARRIER, DA PYKA, R HAID, RW AF KLUCZNIK, RP CARRIER, DA PYKA, R HAID, RW TI PLACEMENT OF A FERROMAGNETIC INTRACEREBRAL ANEURYSM CLIP IN A MAGNETIC-FIELD WITH A FATAL OUTCOME SO RADIOLOGY LA English DT Article DE ANEURYSM, CEREBRAL; HEAD, MR; MAGNETIC RESONANCE (MR), SAFETY; RADIOLOGY AND RADIOLOGISTS, IATROGENIC INJURY ID IMPLANTS; DEVICES; INVIVO AB Magnetic resonance (MR) imaging may be contraindicated in patients with biomedical devices, among the most dangerous of which are intracranial aneurysm clips, owing to the possibility of torque and dislodgment. A case is presented in which a patient with a reportedly nonferromagnetic clip was placed in a magnetic field. The patient developed an acute intracerebral hemorrhage in the MR unit, with a fatal outcome. Imaging studies strongly suggested a torqued clip as the cause. Autopsy revealed a tom middle cerebral artery from clip movement, and the clip was identified as a ferromagnetic type. This is the first reported case, to the authors' knowledge, of a fatal outcome due to an intracranial aneurysm clip placed in a magnetic field. C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT NEUROSURG,LACKLAND AFB,TX 78236. RP KLUCZNIK, RP (reprint author), WILFORD HALL USAF MED CTR,DEPT NEURORADIOL,2200 BERGQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. NR 8 TC 128 Z9 131 U1 0 U2 2 PU RADIOLOGICAL SOC NORTH AMER PI EASTON PA 20TH AND NORTHAMPTON STS, EASTON, PA 18042 SN 0033-8419 J9 RADIOLOGY JI Radiology PD JUN PY 1993 VL 187 IS 3 BP 855 EP 856 PG 2 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA LD192 UT WOS:A1993LD19200051 PM 8497645 ER PT J AU PREPPERNAU, BL GANGULY, BN AF PREPPERNAU, BL GANGULY, BN TI TIME-RESOLVED ELECTRIC-FIELD MEASUREMENTS IN A 15 KHZ HELIUM GLOW-DISCHARGE SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB Time-resolved electric field profile measurements were made in a driven 15 kHz parallel plate helium glow discharge using optogalvanic spectroscopy. Electric field values in the sheath region were determined from the energy splitting of the helium Rydberg state Stark manifolds due to the local applied electric field as a function of position and phase. The measured field values in the cathode sheath region range from about 800 to 300 V/cm; the measurement accuracy of electric field values are +/-25 V/cm. The line of sight laser probe measurements have a spatial resolution of 200 mum and a temporal accuracy' of better than 1 % of the driving cycle. The low driving frequency allows for a comparison with the dc discharge approximation. The spatial electric field profile is identical to a dc discharge operating at the same peak current and voltage values and the temporal field profile is symmetric about the current wave form extremum. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 9 TC 15 Z9 15 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUN PY 1993 VL 64 IS 6 BP 1414 EP 1417 DI 10.1063/1.1144054 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA LF965 UT WOS:A1993LF96500007 ER PT J AU AHRARI, MG AF AHRARI, MG TI ON ISLAM IN CENTRAL-ASIA SO SECURITY DIALOGUE LA English DT Letter RP AHRARI, MG (reprint author), US AIR WAR COLL,MAXWELL AFB,AL, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAGE PUBLICATIONS LTD PI LONDON PA 6 BONHILL STREET, LONDON, ENGLAND EC2A 4PU SN 0967-0106 J9 SECUR DIALOGUE JI Secur. Dialogue PD JUN PY 1993 VL 24 IS 2 BP 238 EP 239 DI 10.1177/0967010693024002018 PG 2 WC International Relations SC International Relations GA LJ446 UT WOS:A1993LJ44600018 ER PT J AU CLIVER, EW CROOKER, NU AF CLIVER, EW CROOKER, NU TI A SEASONAL DEPENDENCE FOR THE GEOEFFECTIVENESS OF ERUPTIVE SOLAR EVENTS SO SOLAR PHYSICS LA English DT Article ID CORONAL MASS EJECTIONS; INTERPLANETARY SHOCKS; GEOMAGNETIC-ACTIVITY; SEMIANNUAL VARIATION; PROTON EVENTS; CYCLE; WIND AB The pronounced seasonal variation of the occurrence rate of great geomagnetic storms, attributed to in-ecliptic draping of interplanetary magnetic fields and the Russell-McPherron effect, suggests that the geoeffectiveness of the causative eruptive solar events has a seasonal dependence. Thus an eruptive solar event of a given 'size' occurring near the equinoxes might be expected to give rise to a larger geomagnetic storm than would a comparable event occurring near the solstices. We present the following evidence for such a seasonal dependence: (1) the great 'problem' storms of the last four solar cycles, i.e., severe storms lacking commensurate preceding solar activity, occurred relatively near the equinoxes, (2) the few great storms that occurred near the solstices were generally preceded by truly outstanding flares, and (3) on average, central meridian proton flares occurring near the equinoxes were followed by significantly larger geomagnetic storms than were similar flares occurring near the solstices. We conclude that the strong semi-annual variation of great storms results from the virtual absence, near the solstices, of great storms associated with disappearing solar filaments and with moderately-sized eruptive solar flares. C1 UNIV CALIF LOS ANGELES, DEPT ATMOSPHER SCI, LOS ANGELES, CA 90024 USA. RP CLIVER, EW (reprint author), USAF, PHILLIPS LAB, GEOPHYS DIRECTORATE, BEDFORD, MA 01731 USA. NR 42 TC 27 Z9 27 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD JUN PY 1993 VL 145 IS 2 BP 347 EP 357 DI 10.1007/BF00690661 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA LA518 UT WOS:A1993LA51800010 ER PT J AU LAVINE, BK STINE, A MAYFIELD, HT AF LAVINE, BK STINE, A MAYFIELD, HT TI GAS-CHROMATOGRAPHY - PATTERN-RECOGNITION TECHNIQUES IN POLLUTION MONITORING SO ANALYTICA CHIMICA ACTA LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON CHEMOMETRICS IN ANALYTICAL CHEMISTRY ( CAC 92 ) CY JUL 14-17, 1992 CL MONTREAL, CANADA SP CLARKSON UNIV, SCH SCI, US EPA DE GAS CHROMATOGRAPHY; PATTERN RECOGNITION; POLLUTION MONITORING; WATERS ID COMPONENTS AB Gas chromatogaphy and pattern recognition methods (GC-PR) constitute a powerful tool for investigating complex environmental problems, e.g., source identification of pollutants. Multivariate methods are necessary to realistically analyze large chromatographic data sets and to seek meaningful relationships between chemical constitution and environmental variables. Recently, our laboratory has investigated the potential of GC-PR as a method for typing jet fuels so a spill sample could be related to its source. Fuels that had undergone weathering in a subsurface environment were correctly identified as to type using disjoint principal component models developed from gas chromatograms of unweathered jet fuels. The constituents of synthetic binary fuel mixtures were also correctly identified by fuel type using the principal component models. C1 CLARKSON UNIV,DEPT ELECT & COMP ENGN,POTSDAM,NY 13699. HQ AFCESA,RDVC,TYNDALL AFB,FL 32403. RP LAVINE, BK (reprint author), CLARKSON UNIV,DEPT CHEM,POTSDAM,NY 13699, USA. NR 21 TC 16 Z9 16 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD MAY 28 PY 1993 VL 277 IS 2 BP 357 EP 367 DI 10.1016/0003-2670(93)80448-T PG 11 WC Chemistry, Analytical SC Chemistry GA LE810 UT WOS:A1993LE81000020 ER PT J AU MERKEL, KG BRIGHT, VM ROBINSON, GD HUANG, CI TROMBLEY, GJ AF MERKEL, KG BRIGHT, VM ROBINSON, GD HUANG, CI TROMBLEY, GJ TI COMPARISON OF AL AND TIPTAU METALLIZATIONS ON A GAAS-MESFET WITH GEMOW OHMIC CONTACTS SO ELECTRONICS LETTERS LA English DT Article DE SEMICONDUCTOR DEVICES AND MATERIALS; OHMIC CONTACTS; FIELD-EFFECT TRANSISTORS AB Metal-semiconductor field effect transistors (MESFETs) were compared using either TiPtAu or Al as both gate metal and interconnect metal to GeMoW source/drain contacts. The GeMoW/Al MESFET demonstrated superior I-V characteristics following thermal cycling at 500-degrees-C. These results demonstrate a complete device and interconnect metallisation scheme capable of withstanding thermal stressing at 500-degrees-C. C1 UNIV CALIF SANTA BARBARA,DEPT ELECT & COMP ENGN,SANTA BARBARA,CA 93106. WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP MERKEL, KG (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 4 Z9 4 U1 0 U2 2 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD MAY 27 PY 1993 VL 29 IS 11 BP 1012 EP 1013 DI 10.1049/el:19930675 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA LN439 UT WOS:A1993LN43900052 ER PT J AU YU, PW TALWAR, DN STUTZ, CE AF YU, PW TALWAR, DN STUTZ, CE TI EFFECTS OF HEAT-TREATMENT ON SHARP-LINE PHOTOLUMINESCENCE OF GAAS GROWN BY LOW-TEMPERATURE MOLECULAR-BEAM EPITAXY SO APPLIED PHYSICS LETTERS LA English DT Article ID FINE-STRUCTURE; COMPLEXES AB We report the effects of heat treatment on sharp-line photoluminescence spectra from GaAs layers grown by low-temperature molecular beam epitaxy. The photoluminescence consists of no-phonon lines of three different centers and associated phonon sidebands of both lattice and localized vibrational modes. By considering the calculated values of local phonon modes, the photoluminescence features, and layer growth conditions, we attribute the three no-phonon lines to the nearest neighbor C3v-type arsenic interstitial complexes: As(in)-V(Ga), As(in)-C(As) and As(in)-AS(Ga). Heat treatments at 300-500-degrees-C considerably increase the concentration of As(in), and thereby, of As(in)-C(As) and As(in)-As(Ga). C1 INDIANA UNIV PENN,DEPT PHYS,INDIANA,PA 15705. WRIGHT LAB,WL ELR,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP YU, PW (reprint author), WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435, USA. NR 11 TC 12 Z9 12 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 24 PY 1993 VL 62 IS 21 BP 2608 EP 2610 DI 10.1063/1.109260 PG 3 WC Physics, Applied SC Physics GA LD123 UT WOS:A1993LD12300004 ER PT J AU VOLZ, FE AF VOLZ, FE TI SCATTERING FUNCTIONS NEAR THE SUN BY LARGE AEROSOLS SO APPLIED OPTICS LA English DT Article ID MASS-DISTRIBUTION; UNITED-STATES; PARTICLES; SITE AB In the course of a lengthy series of observations since 1975, a large, continuous decrease of the brightness of the solar aureole has been found west of Boston, at Hanscom Air Force Base and at Lexington, Mass. This points to the virtual disappearance from the lower atmosphere of giant particles larger than approximately 10 mum in size while total suspended particulates in Boston and other U.S. cities have barely decreased. Results of calculations to better understand the relation between forward scattering and aerosol mass distribution [coarse fraction (CF)] are presented. In addition, a method to modify steep scattering functions calculated for a plane-wave source (Sun treated as a star) to those of the actual (and limb-darkened) Sun is presented. The calculated wavelength dependence of extinction, which is lower than that observed, is found to be little affected by the CF, but seems, like forward scattering, to be sensitive to mass distribution of sizes of < 0.4 and approximately 0.6 mum because of the anomal scattering behavior of spheres. RP VOLZ, FE (reprint author), USAF, GEOPHYS DIRECTORATE, PHILLIPS LAB, BEDFORD, MA 01731 USA. NR 26 TC 3 Z9 3 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD MAY 20 PY 1993 VL 32 IS 15 BP 2773 EP 2779 PG 7 WC Optics SC Optics GA LC306 UT WOS:A1993LC30600017 PM 20820441 ER PT J AU MONTIERTH, KV BAKER, KD JENSEN, LL MEGILL, LR AF MONTIERTH, KV BAKER, KD JENSEN, LL MEGILL, LR TI DETERMINATION OF MOLECULAR DISSOCIATION RATES FROM MEASUREMENTS OF SCATTERED SOLAR ULTRAVIOLET-LIGHT SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID ABSOLUTE SPECTRAL IRRADIANCE; NM; STRATOSPHERE AB Scattered solar ultraviolet light in the spectral region from 250 to 320 nm was measured from a balloon platform at altitudes ranging from 14.5 to 38.8 km with a wavelength resolution of approximately 0.3 nm and an accuracy in determining the wavelength position of 0.5 nm. We used these scatter data to compare and validate a single scattering model developed for this purpose. Using these semi-empirical results, we constructed the single scattered component of the ultraviolet irradiance as a function of height and wavelength. From these data, it is possible to determine the percentage dissociation rate of a variety of species due to scattered ultraviolet radiation. These results are presented as a ratio of intensities R = I1/(I0+I1), where I1 is the first order scattering and I0 is the direct attenuated radiation from the sun. The attenuated direct radiation from the sun can be multiplied by the factor 1/(1-R), the Rayleigh amplification ratio used by Nicolet et al. (1982), to include the contribution to the irradiance from first order scattered light. The results are multiplied by a cross section of the species under consideration to obtain the dissociation rates. Ozone overburden and an approximate ozone particle density altitude profile are obtained when validating the single scatter model. C1 UTAH STATE UNIV,LOGAN,UT 84322. RP MONTIERTH, KV (reprint author), OGDEN AIR LOGIST CTR,DEPT AIR FORCE,AFMC,HILL AFB,UT 84056, USA. NR 30 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD MAY 20 PY 1993 VL 98 IS D5 BP 9011 EP 9022 DI 10.1029/93JD00254 PG 12 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA LD686 UT WOS:A1993LD68600035 ER PT J AU JIANG, H YUAN, T HOW, H WIDOM, A VITTORIA, C DREHMAN, A AF JIANG, H YUAN, T HOW, H WIDOM, A VITTORIA, C DREHMAN, A TI MEASUREMENTS OF ANISOTROPIC CHARACTERISTIC LENGTHS IN YBCO FILMS AT MICROWAVE-FREQUENCIES SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MAGNETIC PENETRATION DEPTH; FIELD; ABSORPTION; CRYSTALS AB We used microwave self-resonant and magnetically modulated microwave absorption techniques to measure the London penetration depth, lambda, and coherence length, xi, in the direction parallel and perpendicular to the a-b plane of YBCO films. We found that both lambda and xi were anisotropic; it appeared that the value of lambda(parallel-to) (0) was about 1800 angstrom and lambda(perpendicular-to) (86.5) about 26 000 angstrom, where lambda(parallel-to) is the penetration depth for the applied microwave electric field parallel and lambda(perpendicular-to) perpendicular to the film plane (c-axis is perpendicular to the film plane). We deduced xi(parallel-to) to be equal to 129 angstrom and ix(perpendicular-to) 40 angstrom at 86.5 K. The anisotropy factor y we determined to be about 3. C1 USAF, ROME LAB, BEDFORD, MA 01731 USA. RP JIANG, H (reprint author), NORTHEASTERN UNIV, BOSTON, MA 02115 USA. NR 18 TC 6 Z9 6 U1 2 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAY 15 PY 1993 VL 73 IS 10 BP 5865 EP 5867 DI 10.1063/1.353554 PN 2A PG 3 WC Physics, Applied SC Physics GA LD854 UT WOS:A1993LD85400216 ER PT J AU SAXENA, VK MALAKONDAIAH, G RADHAKRISHNAN, VM RAO, PR AF SAXENA, VK MALAKONDAIAH, G RADHAKRISHNAN, VM RAO, PR TI ON THE FATIGUE CRACK-GROWTH RESISTANCE OF UPPER BAINITE-MARTENSITE IN AN AISI 4330 STEEL SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID TEMPERATURE MECHANICAL-PROPERTIES; ULTRAHIGH STRENGTH STEEL; IMPROVEMENT C1 JAWAHARLAL NEHRU CTR ADV RES,BANGALORE,INDIA. USAF,WRIGHT PATTERSON AFB,OH 45433. INDIAN INST TECHNOL,DEPT MET ENGN,MADRAS 600036,TAMIL NADU,INDIA. RP SAXENA, VK (reprint author), DEF MET RES LAB,HYDERABAD 500258,INDIA. NR 9 TC 2 Z9 2 U1 2 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD MAY 15 PY 1993 VL 28 IS 10 BP 1257 EP 1260 DI 10.1016/0956-716X(93)90464-4 PG 4 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA KW621 UT WOS:A1993KW62100016 ER PT J AU MCVAY, MC SMITHSON, LD MANZIONE, C AF MCVAY, MC SMITHSON, LD MANZIONE, C TI CHEMICAL-DAMAGE TO AIRFIELD CONCRETE APRONS FROM HEAT AND OILS SO ACI MATERIALS JOURNAL LA English DT Article DE AIRPORTS; APRONS; CHEMICAL ATTACK; CONCRETE PAVEMENTS; HEAT TRANSFER; SCALING; RUNWAYS ID CEMENT AB The U.S. Department of Defense has seen an increase in airfield concrete apron distress in the form of surface scaling when the aprons are exposed to cyclic heat, spilled lubricants, and/or hydraulic fluids. Chemical analysis of the damaged concrete reveals that the spilled fluids are undergoing hydrolysis (breakdown) accompanied by the consumption of calcium hydroxide, plus hydrated-silicate and aluminate phases. The damage was reproduced in the laboratory on 3 ft x 4 in. (0.91 m x 10.2 cm) thick slabs during five weeks of exposure to lubricants and cyclic heat. Use of penetrating sealants, coatings, and/or neutral pH concretes is suggested for pavements exposed to this type of environment. C1 WRIGHT LAB,MAT DIRECTORATE,DIV SYST SUPPORT,MAT INTEGR BRANCH,WRIGHT PATTERSON AFB,OH. USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL. RP MCVAY, MC (reprint author), UNIV FLORIDA,GAINESVILLE,FL 32611, USA. NR 9 TC 4 Z9 4 U1 1 U2 2 PU AMER CONCRETE INST PI FARMINGTON HILLS PA 38800 INTERNATIONAL WAY, COUNTRY CLUB DRIVE, PO BOX 9094, FARMINGTON HILLS, MI 48333-9094 SN 0889-325X J9 ACI MATER J JI ACI Mater. J. PD MAY-JUN PY 1993 VL 90 IS 3 BP 253 EP 258 PG 6 WC Construction & Building Technology; Materials Science, Multidisciplinary SC Construction & Building Technology; Materials Science GA LU105 UT WOS:A1993LU10500008 ER PT J AU SPENNY, C VANMATRE, D HAISLIP, J LINSCOTT, R RAYNES, W SKINNER, M AF SPENNY, C VANMATRE, D HAISLIP, J LINSCOTT, R RAYNES, W SKINNER, M TI AN ALUMINUM SALVAGE STATION FOR EXTERNAL TANKS OF THE SPACE-SHUTTLE SO ACTA ASTRONAUTICA LA English DT Article AB The purpose of this paper is to show that the External Tanks of the Space Transportation System, when carried into low Earth orbit, can be reduced economically to a form of readily usable construction material. A scenario is assumed in which the first tank is partially dismantled and then becomes the facility for dismantling additional tanks, storing product and constructing space structures. A set of tools is identified to autonomously accomplish the tasks of cutting, transport of crude stock. removal of spray-on foam insulation, and product storage. Based upon reducing four tanks per year, more than 52,000 lb of structural aluminum can be salvaged annually, primarily in the form of I-beams and strip. The concept is cost competitive when compared to equivalent products delivered as orbiter payload and can be accomplished concurrent with other mission objectives. RP SPENNY, C (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0094-5765 J9 ACTA ASTRONAUT JI Acta Astronaut. PD MAY PY 1993 VL 29 IS 5 BP 379 EP 397 DI 10.1016/0094-5765(93)90022-O PG 19 WC Engineering, Aerospace SC Engineering GA LD358 UT WOS:A1993LD35800007 ER PT J AU JOSYULA, E GAITONDE, D SHANG, JS AF JOSYULA, E GAITONDE, D SHANG, JS TI HYPERSONIC NONEQUILIBRIUM-FLOW COMPUTATIONS USING THE ROE FLUX-DIFFERENCE SPLIT SCHEME SO AIAA JOURNAL LA English DT Article AB THE Roe flux difference splitting scheme is investigated for accuracy in simulating hypersonic reacting flows. The extension of the Roe scheme to include the finite rate chemical kinetic equations follows the approach of Grossman and Cinnella. Formal second-order accuracy is obtained by employing the monotonic upstream schemes for conservation laws (MUSCL) approach in conjunction with the minmod limiter to degenerate the solution to first-order accuracy in the vicinity of strong shock waves. The full Navier-Stokes equations are solved with finite rate chemistry for the flow past an axisymmetric blunt body at zero incidence at several Mach numbers. The vibrational energy is assumed to be in thermodynamic equilibrium with the other internal energy modes. The air mixture is assumed to consist of the five species O2, O, N2, N, and NO. The surface heat transfer predicted by this scheme is validated for flows with Mach numbers 15.3 and 16.34 when compared with classical theory and experimental results. Both catalytic and noncatalytic wall boundary conditions are used. The entropy correction parameter, necessary to enforce the entropy condition in Roe's scheme, is found to be a simple and effective means to control numerical error due to the degenerated eigenvalue structure in the stagnation region, thus suppressing the numerical bulge or ''carbuncle'' phenomenon. RP JOSYULA, E (reprint author), USAF,WRIGHT AERONAUT LABS,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 4 Z9 4 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 MAY PY 1993 VL 31 IS 5 BP 812 EP 813 DI 10.2514/3.11687 PG 2 WC Engineering, Aerospace SC Engineering GA LC444 UT WOS:A1993LC44400003 ER PT J AU SCHENK, DA CHAMBERS, SL DERDAK, S KOMADINA, KH PICKARD, JS STROLLO, PJ LEWIS, RE PATEFIELD, AJ HENDERSON, JH TOMSKI, SM MORALES, CF STERLING, JL SOLANKI, PH MOORE, J AF SCHENK, DA CHAMBERS, SL DERDAK, S KOMADINA, KH PICKARD, JS STROLLO, PJ LEWIS, RE PATEFIELD, AJ HENDERSON, JH TOMSKI, SM MORALES, CF STERLING, JL SOLANKI, PH MOORE, J TI COMPARISON OF THE WANG 19-GAUGE AND 22-GAUGE NEEDLES IN THE MEDIASTINAL STAGING OF LUNG-CANCER SO AMERICAN REVIEW OF RESPIRATORY DISEASE LA English DT Article ID BRONCHOGENIC-CARCINOMA; ASPIRATION BIOPSY; CLINICAL-PRACTICE; HISTOLOGY NEEDLE; DIAGNOSIS; SPECIMENS AB Transbronchial needle aspiration (TBNA) offers the unique opportunity to pathologically stage patients with lung cancer at the time of diagnostic bronchoscopy. The purpose of this study was to compare the staging sensitivities of the Wang 22-gauge and 19-gauge needles. We studied 64 patients with bronchogenic carcinoma and mediastinal adenopathy. Before bronchoscopy each patient underwent chest CT. Three to four aspirates were obtained with each needle from endotracheal sites adjacent to paratracheal lymphadenopathy In 47 patients malignant mediastinal adenopathy was confirmed by the 19-gauge needle. A total of 29 patients had malignant 22-gauge needle aspirates. Of the 64 patients, 9 had benign, reactive mediastinal lymph nodes. There were 20 patients in whom only the 19-gauge needle demonstrated malignancy and 2 patients with malignant 22-gauge needle aspirates as the sole identifier of paratracheal malignancy. As a staging tool, the 19-gauge needle was significantly more sensitive than the 22-gauge needle, 85.5 versus 52.7% (p = 0.0001). Overall, in 49 of 55 patients (89.1%) with malignant mediastinal lymphadenopathy paratracheal tumor was confirmed by TBNA. The 19-gauge TBNA staging of the mediastinum is an effective, safe, and cost-saving alternative to surgical mediastinal exploration that can be performed during initial diagnostic bronchoscopy. C1 WILFORD HALL USAF MED CTR,DEPT PULM CRIT CARE MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. NR 41 TC 90 Z9 92 U1 0 U2 0 PU AMER LUNG ASSOC PI NEW YORK PA 1740 BROADWAY, NEW YORK, NY 10019 SN 0003-0805 J9 AM REV RESPIR DIS JI Am. Rev. Respir. Dis. PD MAY PY 1993 VL 147 IS 5 BP 1251 EP 1258 PG 8 WC Respiratory System SC Respiratory System GA LJ666 UT WOS:A1993LJ66600030 PM 8484639 ER PT J AU HENRY, RE WEGMANN, JA HARTLE, JE CHRISTOPHER, GW AF HENRY, RE WEGMANN, JA HARTLE, JE CHRISTOPHER, GW TI SUCCESSFUL ORAL ACYCLOVIR DESENSITIZATION SO ANNALS OF ALLERGY LA English DT Article ID FOSCARNET THERAPY; RESISTANT HERPES; AIDS; PENICILLIN; INFECTIONS AB A 65-year-old woman with the acquired immunodeficiency syndrome (AIDS) complicated by recurrent mucocutaneous herpes simplex virus (HSV) infection developed angioedema on the initiation of her second course of oral acyclovir therapy. Oral rechallenge in hospital three days later confirmed acyclovir hypersensitivity. Vidarabine and foscarnet therapies were abandoned after treatment failure and unacceptable toxicity. Acyclovir desensitization was accomplished using a protocol derived from oral penicillin desensitization regimens. Mucocutaneous HSV infection responded to intravenous acyclovir followed by chronic oral suppression without recurrences of HSV or hypersensitivity. This report is an example of acyclovir hypersensitivity and successful oral desensitization. C1 USAF,MED CTR SCOTT,SGHMI,INFECT DIS SECT,SCOTT AFB,IL 62225. NR 9 TC 19 Z9 21 U1 0 U2 1 PU AMER COLL ALLERGY ASTHMA IMMUNOLOGY PI ARLINGTON HTS PA 85 WEST ALGONQUIN RD SUITE 550, ARLINGTON HTS, IL 60005 SN 0003-4738 J9 ANN ALLERGY JI Ann. Allergy PD MAY PY 1993 VL 70 IS 5 BP 386 EP 388 PG 3 WC Allergy SC Allergy GA LD142 UT WOS:A1993LD14200007 PM 8498729 ER PT J AU COSTANTINO, PD FRIEDMAN, CD SHINDO, ML HOUSTON, G SISSON, GA AF COSTANTINO, PD FRIEDMAN, CD SHINDO, ML HOUSTON, G SISSON, GA TI EXPERIMENTAL MANDIBULAR REGROWTH BY DISTRACTION OSTEOGENESIS - LONG-TERM RESULTS SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article AB The use of gradual distraction to grow bone (distraction osteogenesis) has gained widespread orthopedic acceptance, but has only recently been applied to craniofacial skeletal defects. The use of bifocal distraction osteogenesis to fill experimental segmental mandibular defects with regenerate bone was recently reported. Though all canines in that study demonstrated normal oromandibular function, they were observed for only 4 weeks following defect closure. The study that is now reported describes the long-term (12-month) functional, morphologic, and biomechanical results when bifocal distraction osteogenesis was applied to the same model. In this long-term study, three canines had 2.5-cm unilateral segmental mandibular body defects filled with structurally stable bone using bifocal distraction osteogenesis. These dogs exhibited normal oromandibular function for 1 year following segment regrowth and external fixator removal. Macroscopic and histologic evaluation of the regrown segments revealed a re-formation of the cortical and medullary architecture. Stress testing demonstrated the average ultimate strength of the regrown segment at 53 MPa, which corresponded to 77%+/-5.7% of normal mandibular bone. The data suggest that clinical trials applying this technique to segmental mandibular reconstruction are warranted. C1 LOYOLA UNIV,STRITCH SCH MED,DEPT OTOLARYNGOL HEAD & NECK SURG,MAYWOOD,IL 60153. NORTHWESTERN UNIV,SCH MED,DEPT OTOLARYNGOL HEAD & NECK SURG,CHICAGO,IL 60611. WILFORD HALL USAF MED CTR,DEPT ORAL PATHOL,LACKLAND AFB,TX 78236. YALE UNIV,SCH MED,DEPT SURG,OTOLARYNGOL SECT,NEW HAVEN,CT 06510. UNIV SO CALIF,SCH MED,DEPT OTOLARYNGOL HEAD & NECK SURG,LOS ANGELES,CA 90033. RP COSTANTINO, PD (reprint author), WILFORD HALL USAF MED CTR,SGHSO,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236, USA. NR 16 TC 68 Z9 72 U1 2 U2 2 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0886-4470 J9 ARCH OTOLARYNGOL JI Arch. Otolaryngol. Head Neck Surg. PD MAY PY 1993 VL 119 IS 5 BP 511 EP 516 PG 6 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA LB515 UT WOS:A1993LB51500006 PM 8484939 ER PT J AU MEEHAN, R SMITH, M REED, R SAMS, C AF MEEHAN, R SMITH, M REED, R SAMS, C TI POTENTIAL NEUROENDOCRINE MECHANISMS OF T-CELL DYSFUNCTION IN SLE PATIENTS SO ARTHRITIS AND RHEUMATISM LA English DT Meeting Abstract C1 UNIV COLORADO,HLTH SCI CTR,DENVER,CO 80262. USAF ACAD,COLORADO SPRINGS,CO 80840. NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD MAY PY 1993 VL 36 IS 5 SU S BP R6 EP R6 PG 1 WC Rheumatology SC Rheumatology GA LD569 UT WOS:A1993LD56900006 ER PT J AU MCKINNEY, EH AF MCKINNEY, EH TI FLIGHT LEADS AND CRISIS DECISION-MAKING SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID PILOTS AB Flight leads of fighter aircraft are typically considered to be superior airmen. However, little research has explicitly studied the decision-making ability of flight leads. In this study, the crisis decision-making of pilots in the role of flight lead is examined. Data from 156 fighter aircraft mechanical breakdown mishaps are used to compare the decision-making of flight leads to that of wingmen. The results suggest decision-making performance of flight leads is significantly inferior to wingmen. Further, we demonstrate this effect of flight leadership only affects experienced pilots, not inexperienced pilots. Explanations for this counter-intuitive finding include stress, training practices, and communication limitations. RP MCKINNEY, EH (reprint author), USAF ACAD,DFM,HQ USAFA,DEPT MANAGEMENT,COLORADO SPRINGS,CO 80840, USA. NR 7 TC 9 Z9 9 U1 1 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1993 VL 64 IS 5 BP 359 EP 362 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LA459 UT WOS:A1993LA45900001 PM 8503806 ER PT J AU REYES, RM AF REYES, RM TI UNSATISFACTORY ARMA SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Letter RP REYES, RM (reprint author), USAF,MC,ELMENDORF AFB,AK 99506, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1993 VL 64 IS 5 BP 417 EP 418 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA LA459 UT WOS:A1993LA45900017 ER PT J AU AUFDEMORTE, TB FOX, WC MILLER, D BUFFUM, K HOLT, GR CAREY, KD AF AUFDEMORTE, TB FOX, WC MILLER, D BUFFUM, K HOLT, GR CAREY, KD TI A NONHUMAN PRIMATE MODEL FOR THE STUDY OF OSTEOPOROSIS AND ORAL BONE LOSS SO BONE LA English DT Article; Proceedings Paper CT 6TH INTERNATIONAL MEETING ON BONE MORPHOMETRY CY OCT 04-09, 1992 CL LEXINGTON, KY SP ABBOTT LABS, BOEHRINGER MANNHEIM, CHUGAI PHARM, CIBA GEIGY, DIALYSIS CLIN, INTERMED ORTHOPED, RHONE POULENC RORER, SANDOZ PHARM, STRAUMANN, DEPUY ID SKELETAL C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. SW FDN BIOMED RES,SAN ANTONIO,TX 78284. RP AUFDEMORTE, TB (reprint author), UNIV TEXAS,HLTH SCI CTR,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. NR 14 TC 34 Z9 35 U1 0 U2 3 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 8756-3282 J9 BONE JI Bone PD MAY-JUN PY 1993 VL 14 IS 3 BP 581 EP 586 DI 10.1016/8756-3282(93)90197-I PG 6 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA LD833 UT WOS:A1993LD83300060 PM 8363909 ER PT J AU KEARSE, WS RITCHEY, ML AF KEARSE, WS RITCHEY, ML TI CLITORAL ENLARGEMENT SECONDARY TO NEUROFIBROMATOSIS SO CLINICAL PEDIATRICS LA English DT Article C1 WILFORD HALL USAF MED CTR,JOINT MIL MED COMMAND,DEPT UROL,LACKLAND AFB,TX 78236. NR 10 TC 6 Z9 6 U1 0 U2 0 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 MAY PY 1993 VL 32 IS 5 BP 303 EP 304 DI 10.1177/000992289303200511 PG 2 WC Pediatrics SC Pediatrics GA LD752 UT WOS:A1993LD75200011 PM 8324976 ER PT J AU WARD, JB SIOJO, LG WALLER, SG AF WARD, JB SIOJO, LG WALLER, SG TI A PROSPECTIVE, MASKED CLINICAL-TRIAL OF TRIFLUORIDINE, DEXAMETHASONE, AND ARTIFICIAL TEARS IN THE TREATMENT OF EPIDEMIC KERATOCONJUNCTIVITIS SO CORNEA LA English DT Article DE VIRAL CONJUNCTIVITIS; INFECTIOUS KERATOCONJUNCTIVITIS; ADENOVIRUS INFECTION; DEXAMETHASONE; TRIFLUOROTHYMIDINE AB Epidemics of viral conjunctivitis are a major public health problem in the Far East. No treatment has been shown to shorten the duration of illness. We studied the clinical course of epidemic keratoconjunctivitis in 74 patients during an outbreak of nearly 3,000 cases in late 1988 at a U.S. military base in the Philippines. Patients were randomly assigned to treatment with trifluridine, dexamethasone, or artificial tears, and examined in a double-masked fashion. There was no significant difference between the results of the three treatments. No bacterial cultures were positive. The prompt use of patient isolation, identification of nonadenoviral red eyes, and symptomatic treatment without steroids, antiviral, or antibiotic medication is recommended in cases of epidemic keratoconjunctivitis. This is the largest series of cases of epidemic keratoconjunctivitis with laboratory confirmation reported from the Philippines. RP WARD, JB (reprint author), USAF,MED CTR,DEPT OPHTHALMOL,SGHSE,WILFORD HALL,LACKLAND AFB,TX 78236, USA. NR 0 TC 27 Z9 28 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0277-3740 J9 CORNEA JI Cornea PD MAY PY 1993 VL 12 IS 3 BP 216 EP 221 DI 10.1097/00003226-199305000-00006 PG 6 WC Ophthalmology SC Ophthalmology GA KY672 UT WOS:A1993KY67200006 PM 8500334 ER PT J AU GHONEM, H NICHOLAS, T PINEAU, A AF GHONEM, H NICHOLAS, T PINEAU, A TI ELEVATED-TEMPERATURE FATIGUE-CRACK GROWTH IN ALLOY-718 .1. EFFECTS OF MECHANICAL VARIABLES SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES LA English DT Article ID LOW-CYCLE FATIGUE; PROPAGATION BEHAVIOR; HOLD-TIME AB In this paper observations concerning the effects of mechanical variables on the crack growth process in alloy 718 are reviewed and analyzed on the basis of the related deformation characteristics in the crack tip region. The variables included temperature, frequency, wave shape, hold time, load ratio and load interaction. These analyses have suggested that the role of each parameter in the acceleration of crack tip damage is governed mainly by their relative influence on the nature of the corresponding plastic deformation and associated slip line density. On the basis of this view (which assumes crack growth damage covers the range from cyclic- to fully time-dependent processes), the interactive effects of loading parameters are discussed when considering the corresponding fracture mode. Conflicting experimental observations under different operating conditions are examined. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. ECOLE MINES PARIS,CTR MAT,F-91000 EVRY,FRANCE. RP GHONEM, H (reprint author), UNIV RHODE ISL,DEPT MECH ENGN & APPL MECH,MECH SOLIDS LAB,KINGSTON,RI 02881, USA. NR 37 TC 64 Z9 67 U1 0 U2 8 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 MAY PY 1993 VL 16 IS 5 BP 565 EP 576 DI 10.1111/j.1460-2695.1993.tb00767.x PG 12 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA LL375 UT WOS:A1993LL37500008 ER PT J AU SCOTT, RT CAREY, KD LELAND, M NAVOT, D AF SCOTT, RT CAREY, KD LELAND, M NAVOT, D TI GONADOTROPIN RESPONSIVENESS TO ULTRALOW-DOSE LEUPROLIDE ACETATE ADMINISTRATION IN BABOONS SO FERTILITY AND STERILITY LA English DT Article DE GNRH-AGONIST; LUTEINIZING HORMONE; FOLLICLE-STIMULATING HORMONE; BABOONS ID ANOVULATORY INFERTILE WOMEN; INVITRO FERTILIZATION; LUTEINIZING-HORMONE; COMBINATION; INDUCTION; OVULATION; FOLLICLE; AGONIST AB Objective: To evaluate the gonadotropin response to ultralow doses of a GnRH agonist, leuprolide acetate (LA). Design: Prospective and cross-controlled. Setting: Primate research center. Subjects: Four reproductive age cycling baboons (Papio cyanocephalus). Interventions: Three different doses of LA were given intravenously to each animal followed by serial sampling. Main Outcome Measures: Response patterns of circulating serum gonadotropin levels. Results: All four animals responded to each of the three doses of LA in a dose-dependent fashion. Levels of LH and FSH peaked at 49.5 +/- 2.6 mIU/mL and 72.5 +/- 3.4 mIU/mL, respectively, for the highest dose studied (0.17 mug/kg). Levels of LH peaked earlier but were lower than the FSH peak levels. Conclusions: Supraphysiological levels of gonadotropins are attained after the administration of ultralow doses of LA. The level of the response is dose-dependent and is in the range that is required to attain controlled ovarian hyperstimulation. C1 CUNY MT SINAI SCH MED,DEPT OBSTET & GYNECOL & REPROD SCI,NEW YORK,NY 10029. SW FDN BIOMED RES,SAN ANTONIO,TX 78284. RP SCOTT, RT (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,LACKLAND AFB,TX 78236, USA. NR 12 TC 17 Z9 17 U1 0 U2 0 PU AMER SOC REPRODUCTIVE MEDICINE PI BIRMINGHAM PA 1209 MONTGOMERY HIGHWAY, BIRMINGHAM, AL 35216-2809 SN 0015-0282 J9 FERTIL STERIL JI Fertil. Steril. PD MAY PY 1993 VL 59 IS 5 BP 1124 EP 1128 PG 5 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA LB269 UT WOS:A1993LB26900032 PM 8486185 ER PT J AU BATTIATO, JM KOSTUK, RK YEH, J AF BATTIATO, JM KOSTUK, RK YEH, J TI FABRICATION OF HYBRID DIFFRACTIVE OPTICS FOR FIBER INTERCONNECTS SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article ID COMPONENTS AB The fabrication and performance of a hybrid diffractive optical system for use in planar optic interconnects is presented. Specifically, a novel fiber-optic tap utilizing both lithographic surface relief microlenses and interferometrically generated holographic volume elements is discussed. This system serves as an interface between fiber and planar optic interconnects for signal distribution. Design tradeoffs and experimental results are given. C1 UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85724. UNIV ARIZONA,DEPT ELECT & COMP ENGN,TUCSON,AZ 85721. RP BATTIATO, JM (reprint author), USAF,CTR PHOTON,ROME LAB,GRIFFISS AFB,NY 13441, USA. NR 6 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 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD MAY PY 1993 VL 5 IS 5 BP 563 EP 565 DI 10.1109/68.215282 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA LE081 UT WOS:A1993LE08100027 ER PT J AU FREDERICKSON, AR RABKIN, P AF FREDERICKSON, AR RABKIN, P TI SIMPLE-MODEL FOR CARRIER DENSITIES IN THE DEPLETION REGION OF P-N-JUNCTIONS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB By applying the concepts of carrier velocity saturation, and electron-hole pair generation and recombination, in concert with the standard textbook derivation of the p-n abrupt junction diode equations, an analytic expression is found for the magnitude of the carrier densities near and through the depletion region of abrupt p-n junctions. The analytic expression is useful for determining carrier-density or recombination-dependent processes within the depletion region. The derivation is based on the assumption that electrons and boles pass through the depletion region at the saturation velocity. The analytic expression is compared to S-PISCES 2B simulation in a specific silicon p-n junction. The model is called VESAT to indicate its dependence on carrier velocity saturation. C1 SILVACO INT,SANTA CLARA,CA 95054. RP FREDERICKSON, AR (reprint author), USAF,PHILLIPS LAB,DIV SPACE PHYS,BEDFORD,MA 01731, USA. NR 14 TC 4 Z9 4 U1 25 U2 25 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 1993 VL 40 IS 5 BP 994 EP 1000 DI 10.1109/16.210210 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA KX519 UT WOS:A1993KX51900023 ER PT J AU COX, RA DOLAN, MJ MAGEE, DM GALGIANI, JN AF COX, RA DOLAN, MJ MAGEE, DM GALGIANI, JN TI PRODUCTION OF A MURINE MONOCLONAL-ANTIBODY THAT RECOGNIZES AN EPITOPE SPECIFIC TO COCCIDIOIDES-IMMITIS ANTIGEN-2 SO INFECTION AND IMMUNITY LA English DT Article ID CELL-WALL ANTIGEN; M PRECIPITIN ANTIBODY; SPHERULIN; RESPONSES AB Antigen 2 (Ag2) has been implicated as a T-cell-reactive component of the pathogenic fungus Coccidioides immitis. We report the production of a murine monoclonal antibody (MAb) of the immunoglobulin G2a isotype that recognizes an epitope specific to C. immitis Ag2. This specificity was evidenced by the finding that the MAb did not recognize other antigens present in coccidioidin or spherulin and did not show reactivity with antigenic extracts from Histoplasma capsulatum or Blastomyces dermatitidis. The epitope was labile to enzymatic digestion with pronase but resistant to treatment with glycolytic enzymes and to periodate oxidation. This peptide epitope appears to require conformational structure on the basis that it was not recognized by the MAb in immunoblots of antigen that had been electrophoresed in polyacrlyamide gels under denaturing, reducing conditions. Immunoaffinity chromatography of spherulin on columns containing the MAb established that the MAb was effective as a ligand for isolating Ag2 from heterogeneous extracts. The production of a MAb which recognizes an Ag2-specific epitope and its utility as a ligand for isolating Ag2 will provide a valuable reagent for studies of this immunologically important antigen. C1 UNIV ARIZONA,COLL MED,DEPT MED,TUCSON,AZ 85723. VET ADM MED CTR,MED SERV,TUCSON,AZ 85723. USAF,MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236. RP COX, RA (reprint author), SAN ANTONIO STATE CHEST HOSP,DEPT RES IMMUNOL,SAN ANTONIO,TX 78223, USA. FU NIAID NIH HHS [AI 21431] NR 18 TC 5 Z9 5 U1 0 U2 2 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0019-9567 J9 INFECT IMMUN JI Infect. Immun. PD MAY PY 1993 VL 61 IS 5 BP 1895 EP 1899 PG 5 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA KZ177 UT WOS:A1993KZ17700041 PM 7682998 ER PT J AU SETTLE, FA ERBSCHLOE, D ASTORE, W THOMAS, D AF SETTLE, FA ERBSCHLOE, D ASTORE, W THOMAS, D TI THE ORIGINS, PRODUCTION, AND USE OF THE ATOMIC-BOMB - AN INTERDISCIPLINARY UNDERGRADUATE SEMINAR SO JOURNAL OF CHEMICAL EDUCATION LA English DT Article C1 USAF ACAD,COLORADO SPRINGS,CO 80840. RP SETTLE, FA (reprint author), VIRGINIA MIL INST,LEXINGTON,VA 24450, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0021-9584 J9 J CHEM EDUC JI J. Chem. Educ. PD MAY PY 1993 VL 70 IS 5 BP 360 EP 363 PG 4 WC Chemistry, Multidisciplinary; Education, Scientific Disciplines SC Chemistry; Education & Educational Research GA LD682 UT WOS:A1993LD68200011 ER PT J AU HATFIELD, K STAUFFER, TB AF HATFIELD, K STAUFFER, TB TI TRANSPORT IN POROUS-MEDIA CONTAINING RESIDUAL HYDROCARBON .1. MODEL SO JOURNAL OF ENVIRONMENTAL ENGINEERING LA English DT Article ID NONAQUEOUS PHASE LIQUID; ORGANIC-COMPOUNDS; MULTIPROCESS NONEQUILIBRIUM; MASS-TRANSFER; SORPTION; SOILS; CONTAMINATION; MECHANISMS; SYSTEMS; FLOW AB When liquid hydrocarbons or nonaqueous phase liquids (NAPLs) become entrapped below the water table, flowing ground waters carry soluble NAPL components away from the spill zone. Transport of dissolved NAPL components is controlled by several processes including advection, dispersion, sorption onto aquifer materials, and liquid-liquid partitioning. A model is developed to predict solute movement through heterogeneous porous media containing residual NAPL. Governing equations describe both instantaneous and time-dependent processes including: (1) Exchange between mobile and immobile waters; (2) exchange between residual NAPL and water; and (3) exchange between aquifer solids and water. A one-dimensional analytical Laplace-space solution to governing equations is presented. The resulting transport model handles combinations of solute exchange activities that cannot be investigated with other analytical or numerical formulations. The model is tested during an investigation of several hypothetical systems. The investigation shows rate-limited processes causing early solute arrival, a delay in total breakthrough, and asymmetric breakthrough curves. C1 RES CHEM ENGN & SERV LAB, TYNDALL AFB, FL 32403 USA. RP HATFIELD, K (reprint author), UNIV FLORIDA, DEPT CIVIL ENGN, GAINESVILLE, FL 32611 USA. NR 37 TC 23 Z9 23 U1 0 U2 3 PU ASCE-AMER SOC CIVIL ENGINEERS PI RESTON PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA SN 0733-9372 EI 1943-7870 J9 J ENVIRON ENG JI J. Environ. Eng.-ASCE PD MAY-JUN PY 1993 VL 119 IS 3 BP 540 EP 558 DI 10.1061/(ASCE)0733-9372(1993)119:3(540) PG 19 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA LE385 UT WOS:A1993LE38500011 ER PT J AU HATFIELD, K ZIEGLER, J BURRIS, DR AF HATFIELD, K ZIEGLER, J BURRIS, DR TI TRANSPORT IN POROUS-MEDIA CONTAINING RESIDUAL HYDROCARBON .2. EXPERIMENTS SO JOURNAL OF ENVIRONMENTAL ENGINEERING LA English DT Article ID ORGANIC-COMPOUNDS; AQUIFER MATERIALS; SOIL-WATER; SORPTION; FLOW AB When liquid hydrocarbons or nonaqueous-phase liquids (NAPLs) become entrapped below the water table, flowing ground waters carry soluble NAPL components away from the spill zone. Transport of these dissolved NAPL components is controlled by several processes including advection, dispersion, sorption to aquifer materials, and liquid-liquid partitioning. To better understand these processes, miscible displacement experiments were conducted to generate breakthrough curves (BTCs) of pentafluorobenzoic acid (PFBA), benzene, and toluene on sand columns with and without a fixed decane residual. A departure from equilibrium transport is observed in BTCs from the sand-decane system. These BTCs show characteristics of early breakthrough, asymmetry, and tailing. The cause of nonequilibrium is hypothesized to be rate-limited solute exchange between decane and water. A new transport model, capable of handling time-dependent exchange processes, is successfully applied to reproduce experimental BTCs. Results indicate that time-dependent partitioning becomes increasingly important as the solute decane-water partition coefficient and the aqueous-phase fluid velocity increase. C1 RES CHEM ENGN & SERV LAB, TYNDALL AFB, FL 32403 USA. RP HATFIELD, K (reprint author), UNIV FLORIDA, DEPT CIVIL ENGN, GAINESVILLE, FL 32611 USA. NR 21 TC 18 Z9 18 U1 0 U2 2 PU ASCE-AMER SOC CIVIL ENGINEERS PI RESTON PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA SN 0733-9372 EI 1943-7870 J9 J ENVIRON ENG JI J. Environ. Eng.-ASCE PD MAY-JUN PY 1993 VL 119 IS 3 BP 559 EP 575 DI 10.1061/(ASCE)0733-9372(1993)119:3(559) PG 17 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA LE385 UT WOS:A1993LE38500012 ER PT J AU WIESEL, WE AF WIESEL, WE TI STABLE ORBITS ABOUT THE MARTIAN MOONS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID SATELLITES; PHOBOS AB A dynamics model of a satellite of Phobos or Deimos is developed that includes Mars' gravity and oblateness and the moon's orbital eccentricity and its nonspherical shape. Two special cases of the dynamics are studied. If the moon's eccentricity is zero, then we have an autonomous system and families of periodic orbits exist. If the eccentricity is not zero, we have a time-periodic dynamical system which still permits isolated periodic orbits. The zero eccentricity periodic orbits are constructed and found to be stable at any period. In addition, the most important nonzero eccentricity period orbits are given. Sensitivity to poorly known system parameters is explored, and accuracy requirements for spacecraft insertion maneuvers are established. Stable orbits exist about both moons and are well enough known to be used by unmanned spacecraft. RP WIESEL, WE (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 2 Z9 2 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD MAY-JUN PY 1993 VL 16 IS 3 BP 434 EP 440 DI 10.2514/3.21028 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA LC611 UT WOS:A1993LC61100003 ER PT J AU HOLLKAMP, JJ AF HOLLKAMP, JJ TI MULTIPLE-INPUT, MULTIPLE-OUTPUT TIME-SERIES MODELS FROM SHORT DATA RECORDS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID PARAMETER-IDENTIFICATION; REDUCTION AB An algorithm to estimate multiple-input, multiple-output, time-series models for structural system identification using short time histories is presented. The method uses order overspecification to reduce estimation bias and automatically sorts identified system modes from computational modes. The system natural frequencies, damping factors, mode shapes, and modal participation factors are estimated and can be used to reconstruct single-input, single-output models for every input-output pair. Experimental data from a large cantilevered flexible truss are used to demonstrate the technique. Modal estimates are comparable to those obtained using accepted methods such as the eigensystem realization algorithm. RP HOLLKAMP, JJ (reprint author), WRIGHT LAB,FIBGC,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 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 MAY-JUN PY 1993 VL 16 IS 3 BP 549 EP 556 DI 10.2514/3.21044 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA LC611 UT WOS:A1993LC61100019 ER PT J AU BYRD, LW AF BYRD, LW TI VIEW FACTOR ALGEBRA FOR 2 ARBITRARILY SIZED NON-OPPOSING PARALLEL RECTANGLES SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Discussion DE RADIATION RP BYRD, LW (reprint author), WRIGHT LAB,FIBEB,FLIGHT DYNAM DIRECTORATE,AIR FORCE SYST COMMAND,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 5 Z9 5 U1 0 U2 0 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 1993 VL 115 IS 2 BP 517 EP 518 DI 10.1115/1.2910717 PG 2 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA LE445 UT WOS:A1993LE44500040 ER PT J AU LUCEY, DR MCCARTHY, WF BLATT, SP MELCHER, GP HENDRIX, CW AF LUCEY, DR MCCARTHY, WF BLATT, SP MELCHER, GP HENDRIX, CW TI RACIAL-DIFFERENCES IN SERUM BETA-2-MICROGLOBULIN IN PERSONS WITH HUMAN-IMMUNODEFICIENCY-VIRUS INFECTION SO JOURNAL OF INFECTIOUS DISEASES LA English DT Letter ID AIDS; HIV C1 WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236. HENRY M JACKSON FDN,ROCKVILLE,MD. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 9 TC 2 Z9 2 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD MAY PY 1993 VL 167 IS 5 BP 1259 EP 1260 PG 2 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA KZ499 UT WOS:A1993KZ49900051 PM 8486969 ER PT J AU MCHUGH, CP GROGL, M KREUTZER, RD AF MCHUGH, CP GROGL, M KREUTZER, RD TI ISOLATION OF LEISHMANIA-MEXICANA (KINETOPLASTIDA, TRYPANOSOMATIDAE) FROM LUTZOMYIA-ANTHOPHORA (DIPTERA, PSYCHODIDAE) COLLECTED IN TEXAS SO JOURNAL OF MEDICAL ENTOMOLOGY LA English DT Note DE LUTZOMYIA-ANTHOPHORA; LEISHMANIA-MEXICANA; TEXAS ID SAND FLIES AB Three of 27 female Lutzomyia anthophora (Addis) collected in Texas from the nest of a southern plains woodrat, Neotoma micropus Baird, during October 1991 were infected with flagellate protozoans. Isolates were grown in Schneider's Drosophila medium supplemented with 20% fetal bovine serum, and isozyme analysis of two of the isolates determined the parasites to be Leishmania mexicana (Biagi). These are the first isolations of Leishmania from field-collected sand flies in North America north of Mexico. Possible reasons for the lack of human cases near the focus are presented. RP MCHUGH, CP (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,BROOKS AFB,TX 78235, USA. NR 13 TC 21 Z9 22 U1 0 U2 3 PU ENTOMOL SOC AMER PI LANHAM PA 9301 ANNAPOLIS RD, LANHAM, MD 20706 SN 0022-2585 J9 J MED ENTOMOL JI J. Med. Entomol. PD MAY PY 1993 VL 30 IS 3 BP 631 EP 633 PG 3 WC Entomology; Veterinary Sciences SC Entomology; Veterinary Sciences GA LA702 UT WOS:A1993LA70200023 PM 8510126 ER PT J AU EDWARDS, RC FOLEY, WL AF EDWARDS, RC FOLEY, WL TI EXPANDING THE SPECIALTY - A SURVEY OF ORAL AND MAXILLOFACIAL SURGERY RESIDENCIES IN THE UNITED-STATES SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Article C1 USAF,DGMC SGDO,101 BODIN CIRCLE,TRAVIS AFB,CA 94535. NR 2 TC 5 Z9 5 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD MAY PY 1993 VL 51 IS 5 BP 559 EP 562 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LA573 UT WOS:A1993LA57300014 PM 8478763 ER PT J AU DONIGIAN, AM PLAGA, BR CASKEY, PM AF DONIGIAN, AM PLAGA, BR CASKEY, PM TI BIODEGRADABLE FIXATION OF PHYSEAL FRACTURES IN GOAT DISTAL FEMUR SO JOURNAL OF PEDIATRIC ORTHOPAEDICS LA English DT Article DE ANIMAL MODEL; BIODEGRADABLE; FRACTURE; GROWTH PLATE; PIN; SCREW AB We compared the effectiveness of absorbable polylactic acid (PLA) screws and polydioxanone (PDS) pins with that of ASIF cannulated screws in stabilizing Salter-Harris IV fractures in goat distal femur. Eighteen juvenile goats were randomly divided into control (cannulated screw), PLA screw, and PDS pin groups. A Salter-Harris IV medial femoral condyle fracture was created and stabilized, and the goats were sacrificed 8 weeks postoperatively. Articular cartilage displacement <1 mm was considered anatomic. All PLA screws were anatomic as compared with 83% (five of six) of the controls and 17% (one of six) of the pins. Absorbable PLA screws stabilized Salter-Harris IV fractures as well as cannulated screws and better than PDS pins. RP DONIGIAN, AM (reprint author), USAF,MC,FS,3RD MED CTR,SGHSF,24800 HOSP DR,ELMENDORF AFB,AK 99506, USA. NR 0 TC 20 Z9 21 U1 1 U2 2 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0271-6798 J9 J PEDIATR ORTHOPED JI J. Pediatr. Orthop. PD MAY-JUN PY 1993 VL 13 IS 3 BP 349 EP 354 PG 6 WC Orthopedics; Pediatrics SC Orthopedics; Pediatrics GA KX943 UT WOS:A1993KX94300014 PM 8496370 ER PT J AU CHAPPELL, MA MCLAUGHLIN, PW AF CHAPPELL, MA MCLAUGHLIN, PW TI APPROACH TO MODELING CONTINUOUS TURBINE-ENGINE OPERATION FROM STARTUP TO SHUTDOWN SO JOURNAL OF PROPULSION AND POWER LA English DT Article AB A generalized turbine engine start simulation (mathematical model) has been developed and demonstrated. The model, designated as ATEST-V3, is capable of simulating engine operation continuously from near static (zero speed) conditions to maximum engine power including windmill starting, spooldown starting, and starter-assisted starting. The enhanced capability to simulate the engine starting process provides the means to characterize and understand engine system operational behavior during critical startup and shutdown operations. ATEST-V3 is based on an aerothermodynamic matching of the major components. The component-matching technique is widely used for steady-state and transient turbine engine simulations that typically exclude subidle and starting operations. The same approach is shown to be applicable to engine starting operations by modeling component behavior continuously from zero to maximum power. The combination of an existing transient engine simulation and a numerically stable component-matching algorithm provided a foundation for extending the simulation capability to subidle engine operation and engine starting. ATEST-V3 was applied to a modern flight-type turbofan engine which demonstrated the capability to simulate windmill, spooldown, and starter-assisted starts at various flight conditions. Finally, a comparison is made between model results and engine test data. C1 SIMULAT & MODELLING WORKSHOP,GLASTONBURY,CT 06033. RP CHAPPELL, MA (reprint author), SVERDRUP TECHNOL INC,ARNOLD ENGN DEV CTR,ARNOLD AFB,TN 37389, USA. NR 20 TC 8 Z9 10 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD MAY-JUN PY 1993 VL 9 IS 3 BP 466 EP 471 DI 10.2514/3.23645 PG 6 WC Engineering, Aerospace SC Engineering GA LC581 UT WOS:A1993LC58100020 ER PT J AU WRIGHT, EF AF WRIGHT, EF TI ELIMINATION OF A FOOD IMPACTION PROBLEM IN THE POSTERIOR MAXILLARY REGION SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article C1 UNIV MINNESOTA,SCH DENT,CRANIOFACIAL PAIN PROGRAM,MINNEAPOLIS,MN 55455. USAF,WASHINGTON,DC 20330. NR 0 TC 0 Z9 1 U1 0 U2 2 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD MAY PY 1993 VL 69 IS 5 BP 540 EP 541 DI 10.1016/0022-3913(93)90171-J PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA LA032 UT WOS:A1993LA03200021 PM 8483139 ER PT J AU CHEN, MY LI, D LIN, X DRAVID, VP CHUNG, YW WONG, MS SPROUL, WD AF CHEN, MY LI, D LIN, X DRAVID, VP CHUNG, YW WONG, MS SPROUL, WD TI ANALYTICAL ELECTRON-MICROSCOPY AND RAMAN-SPECTROSCOPY STUDIES OF CARBON NITRIDE THIN-FILMS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID SCATTERING AB Deposition of carbon nitride thin films on Si(1000 and polycrystalline Zr substrates was performed by dc magnetron sputtering of a graphite target under a pure nitrogen ambient. The resulting carbon nitride films (CN(x)) are primarily amorphous with a small volume fraction of nanocrystallites. Both energy-dispersive x-ray analysis and electron energy loss spectroscopy measurements showed that the amorphous matrix has uniform nitrogen-to-carbon ratios approximately 0.4-0.8 depending on deposition conditions. Carbon and nitrogen K edge structures obtained from electron energy loss spectroscopy studies suggest that the amorphous carbon nitride matrix is primarily sp2 bonded. Apart from the carbon-nitrogen stretching vibration, Raman spectra of CN(x) films closely resemble those of diamondlike carbon films. Intensity and peak width changes of Raman features in the 1300-1600 cm-1 range due to inorganic carbon (D and G peak) under different deposition conditions are explained in terms of the extent of structural disorder in these films. C1 NORTHWESTERN UNIV, DEPT MAT SCI & ENGN, EVANSTON, IL 60208 USA. WRIGHT LAB, MLBM, WRIGHT PATTERSON AFB, OH 45433 USA. NORTHWESTERN UNIV, CTR ENGN TRIBOL, MCCORMICK SCH ENGN & APPL SCI, EVANSTON, IL 60208 USA. NORTHWESTERN UNIV, BASIC IND RES LAB, EVANSTON, IL 60201 USA. RI Dravid, Vinayak/B-6688-2009; Chung, Yip-Wah/B-7506-2009 NR 15 TC 221 Z9 236 U1 3 U2 21 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 EI 1520-8559 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD MAY-JUN PY 1993 VL 11 IS 3 BP 521 EP 524 DI 10.1116/1.578765 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA LD997 UT WOS:A1993LD99700009 ER PT J AU LI, SH SMITH, SR BHATTACHARYA, PK CHUNG, SW MITCHEL, WC AF LI, SH SMITH, SR BHATTACHARYA, PK CHUNG, SW MITCHEL, WC TI DEEP-LEVEL TRANSIENT SPECTROSCOPY AND ADMITTANCE SPECTROSCOPY OF SI1-XGEX/SI GROWN BY GAS-SOURCE MOLECULAR-BEAM EPITAXY SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 12TH NORTH AMERICAN CONF ON MOLECULAR BEAM EPITAXY CY OCT 12-14, 1992 CL OTTAWA, CANADA SP AMER VACUUM SOC ID ALXGA1-XAS; CENTERS; GAAS AB Deep levels and measured band discontinuities in Si/SiGe heterostructures grown by gas-source molecular-beam epitaxy have been identified. Hole traps in the p-type, undoped, single layers of Si1-xGex (0.05 less-than-or-equal-to x less-than-or-equal-to 0.26) have activation energies ranging from 0.029 to 0.45 eV and capture cross sections (sigma(infinity)) ranging from 10(-9) to 10(-20) CM2. Possible origins of these centers are discussed. It is found from admittance spectroscopy measurements that the band discontinuity is almost entirely in the valence band for 0 < x less-than-or-equal-to 0.1. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LI, SH (reprint author), UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109, USA. NR 11 TC 5 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD MAY-JUN PY 1993 VL 11 IS 3 BP 892 EP 894 DI 10.1116/1.586731 PG 3 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA LH228 UT WOS:A1993LH22800071 ER PT J AU DEMAIORIBUS, CA MILLS, JL FUJITANI, RM TAYLOR, SM JOSEPH, AE AF DEMAIORIBUS, CA MILLS, JL FUJITANI, RM TAYLOR, SM JOSEPH, AE TI A REEVALUATION OF INTRAARTERIAL THROMBOLYTIC THERAPY FOR ACUTE LOWER-EXTREMITY ISCHEMIA SO JOURNAL OF VASCULAR SURGERY LA English DT Article; Proceedings Paper CT 16TH ANNUAL MEETING OF THE MIDWESTERN VASCULAR SURGICAL SOC CY SEP 11-12, 1992 CL CLEVELAND, OH SP MIDWESTERN VASC SURG SOC ID HIGH-DOSE UROKINASE; BYPASS GRAFTS; PERIPHERAL ARTERIAL; VEIN GRAFTS; OCCLUSION; FEMOROPOPLITEAL; ANGIOPLASTY; INFUSION; SALVAGE AB Purpose: This study was performed to clarify the role of intraarterial thrombolytic therapy (IATT) in the management of acute lower extremity ischemia. Methods: A retrospective review of 77 patients undergoing 84 courses of high-dose regional urokinase IATT from July 1981 to June 1991 was performed. The group included patients with acute thrombosis of lower extremity bypass grafts (n = 48) or native arteries (n = 36), presenting with ischemic but viable limbs, minimal or no motor dysfunction, and an absence of muscle rigor or compartment syndrome. The data were then examined individually by site of thrombosis to evaluate patient selection for IATT. Results: Complete lysis, complications (either distal thromboembolism or bleeding), and early limb loss occurred in 59.5%, 11%, and 6% of infusions, respectively. IATT precluded the need for operative intervention in 49% of acutely ischemic limbs. When surgery was required, successful IATT precisely localized responsible lesions and reduced the magnitude of operation. A subset of 13 patients were identified in whom either no intrinsic abnormality or poor runoff were evident after lysis and were treated with anticoagulation alone. Conclusions: These data show IATT to be especially suitable for thrombosis of native iliac or femoropopliteal arteries and infrainguinal vein grafts. IATT serves primarily as an adjunct in management of acute lower extremity ischemia. After successful IATT, subsequent therapy can be tailored to the anatomic cause of thrombosis. C1 USAF,MED CTR,SGHSG,DIAGNOST RADIOL SERV,VASC SURG SECT,WILFORD HALL,LACKLAND AFB,TX 78236. GREENVILLE MEM HOSP,GREENVILLE,IL. UNIV KENTUCKY,LEXINGTON,KY 40506. UNIV S FLORIDA,TAMPA,FL 33620. OI Mills, Joseph/0000-0002-4955-4384 NR 22 TC 47 Z9 48 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0741-5214 J9 J VASC SURG JI J. Vasc. Surg. PD MAY PY 1993 VL 17 IS 5 BP 888 EP 895 PG 8 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA LC093 UT WOS:A1993LC09300009 PM 8487357 ER PT J AU NARKUNBURGESS, DM NOLAN, CR NORMAN, JE PAGE, WF MILLER, PL MEYER, TW AF NARKUNBURGESS, DM NOLAN, CR NORMAN, JE PAGE, WF MILLER, PL MEYER, TW TI 45 YEAR FOLLOW-UP AFTER UNINEPHRECTOMY SO KIDNEY INTERNATIONAL LA English DT Article ID FOCAL SEGMENTAL GLOMERULOSCLEROSIS; STAGE RENAL-DISEASE; WILMS-TUMOR; UNILATERAL NEPHRECTOMY; KIDNEY DONORS; BLOOD-PRESSURE; LIVING DONORS; PROTEINURIA; TRANSPLANTATION; HYPERFILTRATION AB This study examined the consequences of nephrectomy in United States Army personnel who lost a kidney due to trauma during World War II (WWII). Records of 62 servicemen who underwent nephrectomy at an average age of 25 years were obtained. Mortality was compared with that of WWII servicemen of the same age. Medical records of 28 deceased subjects were reviewed for evidence of kidney disease. Medical histories were obtained and blood pressure and kidney function were assessed in 28 living subjects. Two subjects could not be located, and four subjects declined to participate. Mortality at 45 years was not increased in nephrectomized subjects. Kidney disease present in six of 28 deceased subjects was attributable to causes other than prior nephrectomy. Glomerular sclerosis was not increased in 10 subjects who had autopsy examinations. The prevalence of hypertension was not increased in living subjects. Five of 28 living subjects had abnormal renal function manifested by proteinuria greater than 250 mg/day in four cases (range: 377 to 535 mg/day) and serum creatinine levels greater than 1.5 mg/dl in three cases (range: 1.7 to 1.9 mg/dl). Conditions other than nephrectomy could have contributed to impairment of renal function in each of these subjects. These findings suggest that uninephrectomy in young adults has few major adverse consequences over 45 years. C1 NATL RES COUNCIL,MED FOLLOW UP AGCY,WASHINGTON,DC 20418. PALO ALTO VAMC,DEPT MED,DIV RENAL,PALO ALTO,CA. STANFORD UNIV,STANFORD,CA 94305. RP NARKUNBURGESS, DM (reprint author), WILFORD HALL USAF MED CTR,PSMR,DEPT MED,DIV RENAL,2200 BERQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. NR 41 TC 153 Z9 156 U1 0 U2 1 PU BLACKWELL SCIENCE INC PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0085-2538 J9 KIDNEY INT JI Kidney Int. PD MAY PY 1993 VL 43 IS 5 BP 1110 EP 1115 DI 10.1038/ki.1993.156 PG 6 WC Urology & Nephrology SC Urology & Nephrology GA KX289 UT WOS:A1993KX28900017 PM 8510390 ER PT J AU PACHTER, R BUNNING, TJ CRANE, RL ADAMS, WW SOCCI, EP FARMER, BL AF PACHTER, R BUNNING, TJ CRANE, RL ADAMS, WW SOCCI, EP FARMER, BL TI STATIC AND DYNAMIC MOLECULAR MECHANICS MODELING AND X-RAY-SCATTERING CALCULATIONS FOR A CYCLIC SILOXANE MACROMOLECULE SO MAKROMOLEKULARE CHEMIE-THEORY AND SIMULATIONS LA English DT Article ID LIQUID-CRYSTALLINE POLYSILOXANES; POLYMERS; MINIMIZATION; DIFFRACTION; PARAMETERS; ENERGY AB A liquid crystalline system consisting of cyclic penta(methylsiloxane) cores with biphenylyl 4-propoxybenzoate mesogens is studied with respect to its molecular conformation and the intermolecular ordering of pendant groups by employing molecular mechanics calculations, while a molecular dynamics simulation indicates the degree of conformational flexibility. The calculated X-ray scattering patterns for these structures provide insight into the origin of the experimentally observed results. A good agreement is found between the calculated and experimental reflections data, supporting the 'cylinder' global topology as the basis for forming a 'columnar' structure. Further, a comparison of the calculated and experimental meridional sections shows a strong similarity of both the meridional intensities and d-spacings. C1 UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903. RP PACHTER, R (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPJ,WRIGHT PATTERSON AFB,OH 45433, USA. RI Adams, Wade/A-7305-2010 NR 37 TC 9 Z9 9 U1 0 U2 1 PU HUTHIG & WEPF VERLAG PI BASEL PA AUF DEM WOLF 4 FX#001-41-61-317-94-11, CH-4052 BASEL, SWITZERLAND SN 1018-5054 J9 MAKROMOL CHEM-THEOR PD MAY PY 1993 VL 2 IS 3 BP 337 EP 348 PG 12 WC Polymer Science SC Polymer Science GA LA903 UT WOS:A1993LA90300004 ER PT J AU BOYD, C LYMAN, M AF BOYD, C LYMAN, M TI VIDEO BORESCOPE TECHNOLOGY HELPS AIRCRAFT ENGINE MAINTENANCE SO MATERIALS EVALUATION LA English DT Article C1 USAF,AIRCRAFT MAINTENANCE SQUADRON,SCOTT AFB,IL 62225. RP BOYD, C (reprint author), WELCH ALLYN INC,DIV INSPECT SYST,4619 JORDAN RD,POB 100,SKANEATELES FALLS,NY 13153, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD MAY PY 1993 VL 51 IS 5 BP 543 EP 543 PG 1 WC Materials Science, Characterization & Testing SC Materials Science GA LB901 UT WOS:A1993LB90100003 ER PT J AU SCOTT, RT ILLIONS, EH HAYSLIP, CC AF SCOTT, RT ILLIONS, EH HAYSLIP, CC TI ASSISTED REPRODUCTION SO MILITARY MEDICINE LA English DT Letter RP SCOTT, RT (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD MAY PY 1993 VL 158 IS 5 BP A5 EP A5 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA LB249 UT WOS:A1993LB24900004 ER PT J AU SONG, QW ZHANG, CP TALBOT, PJ MAURICE, J AF SONG, QW ZHANG, CP TALBOT, PJ MAURICE, J TI ANISOTROPIC LIGHT-INDUCED SCATTERING AND POSITION DISPERSION IN KNBO3FE CRYSTAL SO OPTICS COMMUNICATIONS LA English DT Article AB The characteristics of polarization-anisotropic scattering and ''position dispersion'' of KNbO3:Fe crystal are investigated. Different from the previously reported scattering mechanism in LiNbO3 and LiTaO3, in which the scattering arises from the amplification of weak beams scattered by bulk and surface inhomogeneities, the scattering from KNbO3:Fe is shown to be mainly due to the light-induced lensing. C1 USAF,CTR PHOTON,RL OCPB,GRIFFISS AFB,NY 13441. RP SONG, QW (reprint author), SYRACUSE UNIV,DEPT ELECT & COMP ENGN,SYRACUSE,NY 13244, USA. NR 11 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD MAY 1 PY 1993 VL 98 IS 4-6 BP 269 EP 273 DI 10.1016/0030-4018(93)90194-A PG 5 WC Optics SC Optics GA KX536 UT WOS:A1993KX53600012 ER PT J AU EVANS, DJ COURT, SA HAZZLEDINE, PM FRASER, HL AF EVANS, DJ COURT, SA HAZZLEDINE, PM FRASER, HL TI DISLOCATION DISSOCIATION IN THE INTERMETALLIC COMPOUND MOSI2 SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID HIGH-TEMPERATURE DEFORMATION; SINGLE-CRYSTALS AB The identity of dislocations which contribute to plastic deformation of polycrystalline MoSi2 when compressed at 1400-degrees-C has been determined using transmission electron microscopy. It has been confirmed that dislocations with Burgers vectors lying parallel to [100] and [111] are activated in response to the applied stress. In addition, the deformation microstructure is characterized by the presence of networks containing dislocations with Burgers vectors parallel to [100], [110] and [111]. It has been shown that dislocations with Burgers vectors lying parallel to [111] are dissociated. A simple explanation has been developed to account for the occurrence of dissociation of particular dislocations, and on the basis of this model the dissociation is represented by 1/2[111]-->1/4[111] + SISF + 1/4[111], where SISF stands for a superlattice intrinsic stacking fault. The SISF energy has been estimated from the separation of the partial dislocations to be about 261 mJ m-2. Other observations of the dissociation of dislocations in MoSi2 have been interpreted in terms of the model developed in the present work. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. ALCAN BANBURY LABS,BANBURY,ENGLAND. UES INC,DAYTON,OH 45432. RP EVANS, DJ (reprint author), OHIO STATE UNIV,DEPT MAT SCI & ENGN,2041 COLL RD,COLUMBUS,OH 43210, USA. NR 7 TC 24 Z9 24 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD MAY PY 1993 VL 67 IS 5 BP 331 EP 341 DI 10.1080/09500839308241270 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA LF715 UT WOS:A1993LF71500004 ER PT J AU CHUNG, SG LIN, CC LEE, ETP AF CHUNG, SG LIN, CC LEE, ETP TI ELECTRON-IMPACT IONIZATION OF THE OXYGEN ATOM SO PHYSICAL REVIEW A LA English DT Article ID CROSS-SECTIONS; EXCITATION; IONS; HE AB The cross sections for electron-impact ionization of oxygen atoms in the (2p4)3P ground state to form O+ ions in the (2p3)4S, (2p3)2D, and (2p3)2p states have been calculated by the Born-Ochkur approximation for incident-electron energies from the threshold to 500 eV and by the method of exchange distorted waves (with Ochkur's approximation) from the threshold to 200 eV. Comparisons are made with previous theoretical calculations and with experimental measurements. Our calculated cross sections agree well with the experimental values, the difference being about 15% at energies above 50 eV. The contributions from autoionization and from the inner-shell ionization (by removing the 2s electron) are also discussed. The cross-section calculation is extended to ionization of oxygen atoms in the [2p3(4S)n0l0]3L0 excited states by means of the Born-Ochkur approximation for n0l0 up to (6,5) and the method of distorted waves for n0l0=3s, 3p, and 3d. C1 USAF,PHILLIPS LAB,SYST COMMAND,BEDFORD,MA 01731. RP CHUNG, SG (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. NR 40 TC 11 Z9 11 U1 1 U2 1 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 MAY PY 1993 VL 47 IS 5 BP 3867 EP 3877 DI 10.1103/PhysRevA.47.3867 PN A PG 11 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA LB805 UT WOS:A1993LB80500049 ER PT J AU WIESEL, WE AF WIESEL, WE TI CONTINUOUS-TIME ALGORITHM FOR LYAPUNOV EXPONENTS .1. SO PHYSICAL REVIEW E LA English DT Article AB The Lyapunov exponent algorithm of Benettin et al. [C. R. Acad. Sci. Paris 286A, 431 (1978); Meccanica 15, 9 (1980)] and of Shimada and Nagashima [Prog. Theor. Phys. 61, 1605 (1979)] is converted to a continuous time algorithm. The Gram-Schmidt orthonormalization process is incorporated into the differential equations, making orthogonalization continuous. Differential equations for the k-dimensional fiducial volumes are also derived. It is further shown that this algorithm is a factorization of the fundamental matrix PHI in the form PHI(t) = E(t)W(t)E-1(t0), where E(t) is orthonormal and W(t) is upper triangular. Numerical stability of the algorithm is considered, and it is shown that the standard Gram-Schmidt process can be used to stabilize the (possibly) unstable equations of motion for the orthonormal basis vectors. A numerical example is presented. RP WIESEL, WE (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 15 Z9 15 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 MAY PY 1993 VL 47 IS 5 BP 3686 EP 3691 DI 10.1103/PhysRevE.47.3686 PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA LF067 UT WOS:A1993LF06700079 ER PT J AU WIESEL, WE AF WIESEL, WE TI CONTINUOUS-TIME ALGORITHM FOR LYAPUNOV EXPONENTS .2. SO PHYSICAL REVIEW E LA English DT Article AB The continuous time form of the ''standard'' Lyapunov exponent algorithm is extended to include an imaginary part. It is shown that both the familiar constant-coefficient case and the periodic-coefficient case can be solved by this technique. However, while the algorithm is strongly stable in converging on the real parts of the system characteristic exponents, it will produce random imaginary parts. The choice of the original orthonormal matrix is critical: the special initial conditions which lead to the correct imaginary parts for the constant-coefficient and periodic-coefficient cases are found. Without a way to find the special initial orthonormal initial conditions for the general time-dependent case, the imaginary part of a Lyapunov exponent remains difficult to calculate. RP WIESEL, WE (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 4 Z9 4 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 1993 VL 47 IS 5 BP 3692 EP 3697 DI 10.1103/PhysRevE.47.3692 PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA LF067 UT WOS:A1993LF06700080 ER PT J AU KESLAR, PJ BUCK, JL SELBY, DM AF KESLAR, PJ BUCK, JL SELBY, DM TI INFANTILE HEMANGIOENDOTHELIOMA OF THE LIVER REVISITED SO RADIOGRAPHICS LA English DT Article DE HEMANGIOENDOTHELIOMA; LIVER NEOPLASMS; NEOPLASMS, IN INFANTS AND CHILDREN ID HEPATIC HEMANGIOENDOTHELIOMA; CHILDHOOD; HEMANGIOMATOSIS; INFANCY; TUMORS; MANAGEMENT; DIAGNOSIS AB Infantile hemangioendothelioma is a benign tumor of the liver composed of anastomosing vascular channels lined by plump endothelial cells. At initial presentation, most patients are 6 months of age or younger and have hepatomegaly or an abdominal mass. Congestive heart failure, bleeding, anemia, jaundice, and cutaneous or visceral hemangiomas may also be present. Grossly, the lesions are usually well circumscribed and may be focal, multifocal, or diffuse. Large solitary lesions are often associated with central hemorrhage or necrosis. Radiography reveals a mass that is occasionally calcified. Angiography reveals hypervascular lesions, often with arteriovenous shunting. A solid lesion with variable echotexture is noted at ultrasound. Computed tomography typically shows a low-attenuation solid lesion with peripheral enhancement. Central enhancement is often lacking except in smaller lesions. At magnetic resonance imaging performed with T2-weighted pulse sequences, the lesions usually have high signal intensity. Spontaneous regression of the tumor occurs, although patients may die of associated conditions. C1 GEORGE WASHINGTON UNIV,MED CTR,CHILDRENS NATL MED CTR,DEPT ANAT PATHOL,WASHINGTON,DC 20037. UNIFORMED SERV UNIV HLTH SCI,DEPT RADIOL & NUCL MED,BETHESDA,MD 20814. RP KESLAR, PJ (reprint author), USAF,INST PATHOL,DEPT RADIOL PATHOL,BLDG 54,RM M-121,ALASKA & FERN STS,WASHINGTON,DC 20306, USA. NR 23 TC 43 Z9 45 U1 0 U2 0 PU RADIOLOGICAL SOC NORTH AMER PI EASTON PA 20TH AND NORTHAMPTON STS, EASTON, PA 18042 SN 0271-5333 J9 RADIOGRAPHICS JI Radiographics PD MAY PY 1993 VL 13 IS 3 BP 657 EP 670 PG 14 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA LC124 UT WOS:A1993LC12400017 PM 8316672 ER PT J AU SIMONSON, RJ ALTAMIRANO, MM CHAMPETIER, RJ COHEN, MR SNYDER, J STAPP, RS AF SIMONSON, RJ ALTAMIRANO, MM CHAMPETIER, RJ COHEN, MR SNYDER, J STAPP, RS TI A NEW DESIGN FOR AN ULTRAHIGH-VACUUM SURFACE-ANALYSIS CHAMBER WITH OPTICAL SCATTER MEASUREMENT CAPABILITY SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB An ultrahigh vacuum (UHV) surface analysis chamber coupled with a visible light-scattering apparatus is described. This combination of UHV surface analysis capabilities and bidirectional reflectance distribution function measurements permits investigation of effects of various surface treatments such as gas adsorption and ion bombardment on optical scatter. Stray light reflections from the UHV windows and components are temporally rejected by use of a picosecond pulsed laser source and synchronized, time-gated detector. This system allows measurement of optical scatter levels in the range of 10(-7) sr-1. RP SIMONSON, RJ (reprint author), USAF,PHILLIPS LAB,ALBUQUERQUE,NM 87117, USA. NR 9 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAY PY 1993 VL 64 IS 5 BP 1287 EP 1291 DI 10.1063/1.1144081 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA LB849 UT WOS:A1993LB84900032 ER PT J AU WARD, CH WILLIAMS, JC THOMPSON, AW AF WARD, CH WILLIAMS, JC THOMPSON, AW TI DYNAMIC ENVIRONMENTAL EMBRITTLEMENT OF AN ALPHA-2 TITANIUM ALUMINIDE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 GE AIRCRAFT ENGINES,ENGN MAT TECHNOL LABS,CINCINNATI,OH 45215. CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213. RP WARD, CH (reprint author), WRIGHT LAB,MLLM,WRIGHT PATTERSON AFB,OH 45433, USA. OI Ward, Charles/0000-0002-5813-439X NR 6 TC 10 Z9 10 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD MAY 1 PY 1993 VL 28 IS 9 BP 1017 EP 1021 DI 10.1016/0956-716X(93)90002-A PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA KV019 UT WOS:A1993KV01900002 ER PT J AU BLACK, WG AF BLACK, WG TI MILITARY-INDUCED FAMILY SEPARATION - A STRESS REDUCTION INTERVENTION SO SOCIAL WORK LA English DT Article ID FATHER PRESENCE; ABSENCE AB The Persian Gulf War focused public attention on the problems military families face in coping with military-induced family separation. This article highlights some of the unique stressors faced by active-duty, national guard, and reserve military families. Practice guidelines are presented to assist social workers in designing interventions to help these families. RP BLACK, WG (reprint author), USAF,REG HOSP EGLIN,AFSC,FAMILY PRACTICE RESIDENCY PROGRAM,EGLIN AFB,FL 32542, USA. NR 47 TC 43 Z9 43 U1 0 U2 1 PU NATL ASSOC SOCIAL WORKERS PI WASHINGTON PA 750 FIRST ST, NE, STE 700, WASHINGTON, DC 20002-4241 SN 0037-8046 J9 SOC WORK JI Soc. Work PD MAY PY 1993 VL 38 IS 3 BP 273 EP 280 PG 8 WC Social Work SC Social Work GA LA924 UT WOS:A1993LA92400005 PM 8511656 ER PT J AU REYNOLDS, DC EVANS, KR JOGAI, B STUTZ, CE YU, PW AF REYNOLDS, DC EVANS, KR JOGAI, B STUTZ, CE YU, PW TI PHOTOLUMINESCENCE STUDY OF SYMMETRICAL, COUPLED, DOUBLE INXGA1-XAS-GAAS QUANTUM-WELL STRUCTURES SO SOLID STATE COMMUNICATIONS LA English DT Article ID ENERGY AB Detailed photoluminescence (PL) and PL excitation (PLE) measurements are reported for narrow, pseudomorphic, nominally symmetric, coupled In(approximately 0.08)Ga(approximately 0.92)As-GaAs double quantum well (QW) structures Well widths from 4 to 14 monolayers (MLs) and ''coupling'' barrier widths from 20 to 120 angstrom are examined (1 ML = 2.8635 angstrom). Free-exciton and subband edge transitions for both light- and heavy-holes are observed and are associated with symmetric and antisymmetric combinations of isolated QW wave functions. The difference between the subband energy and the exciton energy gives the exciton binding energy. The subband energy was confirmed by magneto-optical studies involving field dependent PLE measurements from which Landau oscillations were observed. From the Landau level fan diagram the subband energy was obtained. Exciton binding energies deduced from these measurements were found to be greater for symmetric than for antisymmetric heavy-hole free-excitons (HHFEs). For example, the exciton binding energy E(B) for two 14ML wide In0.085Ga0.915As QWs separated by a 120 angstrom GaAs ''coupling'' barrier is found to be E(B) (S-HHFE) almost-equal-to 8.3 meV for the symmetric HHFE (S-HHFE) and E(B) (A-HHFE) almost-equal-to 6.8 meV for the antisymmetric HHFE (A-HHFE). That E(B) (S-HHFE) > E(B) (A-HHFE) is expected since S-HHFEs are more confined than A-HHFEs: heavy-holes and electrons associated with symmetric combinations of isolated QW wave functions lie lower in energy than heavy-holes and electrons associated with antisymmetric combinations of isolated QW wave functions. These results are compared with transition energy calculations based on a four band k.p formalism, and reasonably good agreement is found. Additionally, fine structure is observed for the 14ML double QW sample in both the symmetric and antisymmetric HHFE transitions and is explained on the basis of variations in well width and/or indium content. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELRA,WRIGHT PATTERSON AFB,OH 45433. RP REYNOLDS, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD MAY PY 1993 VL 86 IS 5 BP 339 EP 345 DI 10.1016/0038-1098(93)90385-Z PG 7 WC Physics, Condensed Matter SC Physics GA LA658 UT WOS:A1993LA65800015 ER PT J AU PATTERSON, WR DALTON, LM MCGLASSON, DL CISSIK, JH AF PATTERSON, WR DALTON, LM MCGLASSON, DL CISSIK, JH TI AGGREGATION OF KILLER WHALE PLATELETS SO THROMBOSIS RESEARCH LA English DT Article DE PLATELETS; PLATELET AGGREGATION; KILLER WHALES ID ACTIVATION; RECEPTOR AB The aggregation of blood platelets is a crucial step in normal hemostasis for all mammals. Circulating platelets are sensitive to a large variety of physiologic and non-physiologic stimulants, some of which are formed or exposed in conjunction with vascular damage or endothelial cell denudation. In addition, drastic pressure changes activate human platelets. Killer whale platelet function, on the other hand, is very intriguing since these animals do not seem to experience untoward platelet reactions during or after diving to great depths, nor do they experience abnormal bleeding associated with sub optimal platelet function. We examined this concept and determined that killer whale platelets, in response to ADP, PAF, and arachidonic acid, appeared to aggregate normally during the first 2-5 minutes after addition of the agonist, but had completely disaggregated at 10 minutes. Collagen- and A23187-induced aggregation appeared normal and complete within 10 minutes, while there was no response to epinephrine or ristocetin. Thromboxane production by killer whale platelets appears to be quantitatively similar to that produced by human platelets in response to ADP and PAF and exceeded that produced by human platelets when collagen was used as the agonist. In summary, this study reports a reduced platelet aggregation reaction in killer whales in response to several platelet agonists which does not appear to be related to the generation of thromboxane. This phenomenon may serve a protective role in these mammals by preventing thrombosis during diving and resurfacing. C1 WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. SEA WORLD TEXAS,SAN ANTONIO,TX 78251. NR 20 TC 7 Z9 7 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0049-3848 J9 THROMB RES JI Thromb. Res. PD MAY 1 PY 1993 VL 70 IS 3 BP 225 EP 231 DI 10.1016/0049-3848(93)90129-C PG 7 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA LB723 UT WOS:A1993LB72300004 PM 8327987 ER PT J AU MOREHOUSE, ET AF MOREHOUSE, ET TI OVERVIEW - AIR-FORCE POLICY ON HALONS SO TOXICOLOGY LETTERS LA English DT Article; Proceedings Paper CT CONF ON APPLICATIONS OF ADVANCES IN TOXICOLOGY TO RISK ASSESSMENT CY MAY 19-21, 1992 CL WRIGHT PATTERSON AFB, OH SP ARMSTRONG LAB, OCCUPAT & ENVIRONM HLTH DIRECTORATE, TOXICOL DIV, USN, NAVAL MED RES INST DETACHMENT, USA, BIOMED RES & DEV LAB DE HALON REPLACEMENTS; AIR-FORCE HALON USES; AIR-FORCE REGULATION-19-15 AB Halons have been used for decades by the Air Force for a variety of fire protection applications. Their unique combination of effectiveness, low toxicity, ease of use, cleanliness, and low manufacturing cost appear to make them ideal for many situations. Unfortunately, they also deplete the earth's protective ozone layer and, consequently, their production is being phased out globally under the Montreal Protocol. United States legislation implementing the terms of the Protocol required an end to production of ozone depleting chemicals (ODCs) by the year 2000. In November 1991, the Air Force issued a policy requiring an end to ODC purchases by the end of 1997. In February 1992, President Bush announced an even more accelerated phaseout to 1995. The Montreal Protocol is expected to be amended to reflect the more aggressive US phaseout date. This accelerated date increases the urgency of the Air Force's search for ODC alternatives, especially for mission critical uses for which no alternatives have yet been identified. The search is complicated by the fact that the requirements an alternative must meet are unique to their specific application. This paper will provide an overview of the most important Air Force halon uses and review Air Force strategies for ensuring mission continuity until alternatives can be developed. RP MOREHOUSE, ET (reprint author), USAF,AF CEVV,DIV POLUT PREVENT,ENVIRONM QUAL DIRECTORATE,OFF CIVIL ENGINEER,BOLLING AFB,DC 20332, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD MAY PY 1993 VL 68 IS 1-2 BP 11 EP 19 DI 10.1016/0378-4274(93)90113-C PG 9 WC Toxicology SC Toxicology GA LH577 UT WOS:A1993LH57700004 PM 8516757 ER PT J AU MCDOUGAL, JN DODD, DE AF MCDOUGAL, JN DODD, DE TI AIR-FORCE APPROACH TO RISK ASSESSMENT FOR HALON REPLACEMENTS SO TOXICOLOGY LETTERS LA English DT Article; Proceedings Paper CT CONF ON APPLICATIONS OF ADVANCES IN TOXICOLOGY TO RISK ASSESSMENT CY MAY 19-21, 1992 CL WRIGHT PATTERSON AFB, OH SP ARMSTRONG LAB, OCCUPAT & ENVIRONM HLTH DIRECTORATE, TOXICOL DIV, USN, NAVAL MED RES INST DETACHMENT, USA, BIOMED RES & DEV LAB DE RISK ASSESSMENT; HALON REPLACEMENT; PHARMACOKINETIC MODELS AB Finding safe, environmentally acceptable, and effective replacements for Halon fire-extinguishing agents and other chemicals banned by the Montreal Protocol is a formidable task for Air Force research and development organizations. One factor that makes this task a challenge is the uncertainty in relating toxicology studies in laboratory animals to the human situation. This uncertainty from toxicology studies affects the risk assessment process by calling for very conservative decisions. Because of this uncertainty, public pressure and politics also impact the regulatory process. The Air Force approach to assessing health hazards for Halon replacements is to provide scientific information that directly applies to the parts of the extrapolation process that are responsible for the most uncertainty. Most regulatory agencies readily incorporate scientific information, when it is available, which can reduce uncertainty. These Air Force studies will be used to provide realistic exposure levels for replacement chemicals which will allow mission accomplishment and provide safety for the worker and the populace. C1 MANTECH ENVIRONM TECHNOL INC,TOX HAZARDS RES UNIT,DAYTON,OH. RP MCDOUGAL, JN (reprint author), USAF,WRIGHT AERONAUT LABS,DIV TOXICOL,ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,BSC,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD MAY PY 1993 VL 68 IS 1-2 BP 31 EP 35 DI 10.1016/0378-4274(93)90116-F PG 5 WC Toxicology SC Toxicology GA LH577 UT WOS:A1993LH57700007 PM 8516772 ER PT J AU GRABAU, JH AF GRABAU, JH TI ANIMAL ISSUES AND SOCIETY SO TOXICOLOGY LETTERS LA English DT Article; Proceedings Paper CT CONF ON APPLICATIONS OF ADVANCES IN TOXICOLOGY TO RISK ASSESSMENT CY MAY 19-21, 1992 CL WRIGHT PATTERSON AFB, OH SP ARMSTRONG LAB, OCCUPAT & ENVIRONM HLTH DIRECTORATE, TOXICOL DIV, USN, NAVAL MED RES INST DETACHMENT, USA, BIOMED RES & DEV LAB DE ANIMAL RIGHTS; ANIMAL WELFARE; ANIMAL USE; ANIMAL ISSUES; ANIMAL PATENTS; ANIMAL ACTIVISTS; ANIMAL RESEARCH AB Animal use topics are sensitive issues today. Animal uses issues are often presented as black and white or 'we' are right and 'they' are wrong. This is clearly demonstrated in the available literature from most organizations. Topics presented will include: delineation of issues and concerned groups; examples of animal issues in education and agriculture; the terrorist issue; examples of animal issues/sportsman issues; examples of political and legislative impact; and examples of biomedical and toxicology animal use issues. RP GRABAU, JH (reprint author), USA,ARMSTRONG LAB,ARMY MED RES UNIT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD MAY PY 1993 VL 68 IS 1-2 BP 51 EP 57 DI 10.1016/0378-4274(93)90118-H PG 7 WC Toxicology SC Toxicology GA LH577 UT WOS:A1993LH57700009 PM 8516774 ER PT J AU CALDWELL, DJ AF CALDWELL, DJ TI USE OF ALTERNATIVE END-POINTS WITH THE UPITT-II METHOD FOR ASSESSING THE TOXICITY OF SMOKE SO TOXICOLOGY LETTERS LA English DT Article; Proceedings Paper CT CONF ON APPLICATIONS OF ADVANCES IN TOXICOLOGY TO RISK ASSESSMENT CY MAY 19-21, 1992 CL WRIGHT PATTERSON AFB, OH SP ARMSTRONG LAB, OCCUPAT & ENVIRONM HLTH DIRECTORATE, TOXICOL DIV, USN, NAVAL MED RES INST DETACHMENT, USA, BIOMED RES & DEV LAB DE UPITT-II METHOD; COMBUSTION TOXICOLOGY; SMOKE TOXICITY; ALTERNATIVE END POINTS ID HYDROGEN-CYANIDE; CARBON-MONOXIDE; THERMAL-DECOMPOSITION; POTENTIAL TOXICITY; BURNING POLYMERS; DOUGLAS-FIR; LOW OXYGEN; ATMOSPHERES; GASES; PERFORMANCE AB A small-scale combustion module and animal exposure system for evaluating flaming combustion and toxicity of smoke from burning polymers has been developed at the University of Pittsburgh and designated the UPitt II method [1]. It is a radical departure from previous attempts to evaluate toxicity of smoke from burning polymers and represents a significant improvement over previous systems because well-defined burning conditions can be established over a wide range of imposed heat flux and ventilation levels, not possible to examine with previous methods. Thus, smoke toxicity can be evaluated under a range of burning conditions and differences in toxic potency and time to effect can be evaluated [2]. A potential smoke hazard (PSH) index was developed which integrates the material performance characteristics which determine ease of ignition of a polymer with toxic potency, time to death, and rate of generation of toxicants [3]. This paper describes sublethal endpoints that can be used with the UPitt II method and modifications to the PSH index for evaluating the toxicity of smoke generated by burning polymers. RP CALDWELL, DJ (reprint author), USA,BIOMED RES & DEV LAB,OCCUPAT HLTH RES DETACHMENT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 27 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD MAY PY 1993 VL 68 IS 1-2 BP 241 EP 249 DI 10.1016/0378-4274(93)90135-K PG 9 WC Toxicology SC Toxicology GA LH577 UT WOS:A1993LH57700026 PM 8516769 ER PT J AU OGATA, N MILLER, RH ISHAK, KG PURCELL, RH AF OGATA, N MILLER, RH ISHAK, KG PURCELL, RH TI THE COMPLETE NUCLEOTIDE-SEQUENCE OF A PRECORE MUTANT OF HEPATITIS-B VIRUS IMPLICATED IN FULMINANT-HEPATITIS AND ITS BIOLOGICAL CHARACTERIZATION IN CHIMPANZEES SO VIROLOGY LA English DT Article ID POSITIVE CARRIER MOTHERS; PRECORE-REGION DEFECTS; E-ANTIGEN; SUBTYPE-ADR; INFANTS BORN; PROMOTER REGION; T-CELLS; MUTATIONAL ANALYSIS; FETAL TRANSMISSION; ESCHERICHIA-COLI C1 NIAID,INFECT DIS LAB,HEPATITIS VIRUSES SECT,BETHESDA,MD 20892. USAF,INST PATHOL,DEPT HEPAT & GASTROINTESTINAL PATHOL,WASHINGTON,DC 20306. FU NIAID NIH HHS [N01-AI-72623, N01-AI-05069] NR 96 TC 103 Z9 106 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0042-6822 J9 VIROLOGY JI Virology PD MAY PY 1993 VL 194 IS 1 BP 263 EP 276 DI 10.1006/viro.1993.1257 PG 14 WC Virology SC Virology GA KY344 UT WOS:A1993KY34400030 PM 8480422 ER PT J AU ZABINSKI, JS DONLEY, MS MCDEVITT, NT AF ZABINSKI, JS DONLEY, MS MCDEVITT, NT TI MECHANISTIC STUDY OF THE SYNERGISM BETWEEN SB2O3 AND MOS2 LUBRICANT SYSTEMS USING RAMAN-SPECTROSCOPY SO WEAR LA English DT Article AB A number of materials have been added to MoS2 to improve its lubricating properties. However, the mechanism underlying this improvement is not fully understood. Perhaps the most widely used and studied additive is Sb2O3. While not a lubricant itself, it acts synergistically with MoS2 to improve friction and wear properties. This paper is directed towards developing a better fundamental understanding of the synergism between Sb2O3 and MoS2 in adhesively bonded films. A commercial preparation was used to form the films and laser Raman spectroscopy was used to analyze them before and after rubbing. It is shown that films layer as a result of tribostress -MoS2 preferentially coats film surfaces and Sb2O3 becomes enriched in the next deeper layer. The mechanism proposed to explain the synergistic behavior is that only the thin layer of MoS2 residing on top is exposed to degradation from the environment. The Sb2O3 layer acts as a thermal and oxygen diffusion barrier to retard oxidation deeper into the film. Sb2O3 also acts as a beneficial support for MoS2 as was demonstrated earlier by Centers (Tribol. Trans., 31/32 (1987) 149). The proposed mechanism suggests that protection is provided against tribo-oxidation but not necessarily thermal oxidation. To validate this concept, wear oxidation is evaluated in situ using a Raman tribotester and the results are compared with thermal oxidation data. Films containing Sb2O3 are indeed more resistant to tribo-oxidation than MoS2 films. It is also shown that the transfer film surface is enriched with MoS2. This indicates that friction is primarily governed by MoS2 rubbing against MoS2 and that Sb2O3 plays a secondary role. C1 RAMSPEC RES,DAYTON,OH 45431. RP ZABINSKI, JS (reprint author), WRIGHT LAB,MLBT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 37 Z9 39 U1 0 U2 12 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD MAY 1 PY 1993 VL 165 IS 1 BP 103 EP 108 DI 10.1016/0043-1648(93)90378-Y PG 6 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA LC185 UT WOS:A1993LC18500014 ER PT J AU WEINSTOCK, H AF WEINSTOCK, H TI PROSPECTS ON THE APPLICATION OF HTS SQUID MAGNETOMETRY TO NONDESTRUCTIVE EVALUATION (NDE) SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 2ND ISRAELI INTERNATIONAL CONF ON HIGH-TEMPERATURE SUPERCONDUCTIVITY CY JAN 04-08, 1992 CL EILAT, ISRAEL SP CNRS, ITALIAN NATL RES COUNCIL, BRIT COUNCIL, USA, EUROPEAN OFF AEROSP RES & DEV, ISRAELI MINIST FOREIGN AFFAIRS, TEL AVIV UNIV, OREN FAMILY CHAIR EXPTL SOLID STATE PHYS AB In light of recent advances in the fabrication of low-noise HTS SQUIDs, a review is presented on the use of LTS SQUID magnetometry for nondestructive evaluation (NDE). Examples are given on applications relating to defects in steel, subsurface cracks in aircraft frames, and voids in non-metallic structures. HTS SQUIDs may make a significant difference in the acceptance of these applications because sensing coils will be closer to a sample under test, there will be greater instrument portability and the problem of bringing liquid helium to remote locations will be eliminated. RP WEINSTOCK, H (reprint author), USAF,OFF SCI RES,DIRECTORATE PHYS & ELECTR,BOLLING AFB,DC 20332, USA. NR 11 TC 19 Z9 19 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD APR 20 PY 1993 VL 209 IS 1-3 BP 269 EP 272 DI 10.1016/0921-4534(93)90921-C PG 4 WC Physics, Applied SC Physics GA KZ521 UT WOS:A1993KZ52100068 ER PT J AU QUAN, R AF QUAN, R TI THE USE OF LINKED LISTS IN THE SIMULATION OF CONTROLLER STRUCTURE INTERACTION SO COMPUTERS & STRUCTURES LA English DT Article AB An algorithm for the computer simulation of large space structures under active control is considered. Linked lists are used in a matrix data structure to implement the trapezoidal rule on system differential equations. The use of the trapezoidal rule ensures that the numerical stability is equivalent to the system stability, which is essential for this type of simulation. The sparsity of the system matrices is exploited by the linked lists, and the algorithm efficiently steps through the lists in an orderly fashion. Results of simulations on a NASA large space structure experiment are reported. RP QUAN, R (reprint author), USAF ACAD,FRANK J SEILER LAB,COLORADO SPRINGS,CO 80840, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7949 J9 COMPUT STRUCT JI Comput. Struct. PD APR 17 PY 1993 VL 47 IS 2 BP 225 EP 231 DI 10.1016/0045-7949(93)90370-S PG 7 WC Computer Science, Interdisciplinary Applications; Engineering, Civil SC Computer Science; Engineering GA LF239 UT WOS:A1993LF23900006 ER PT J AU WOODYARD, TC MELLINGER, JD VANN, KG NISENBAUM, J AF WOODYARD, TC MELLINGER, JD VANN, KG NISENBAUM, J TI ACUTE SUPERIOR VENA-CAVA SYNDROME AFTER CENTRAL VENOUS CATHETER PLACEMENT SO CANCER LA English DT Article DE SUPERIOR VENA CAVA SYNDROME; CENTRAL VENOUS CATHETERIZATION; CENTRAL VENOUS THROMBOSIS ID THROMBOSIS AB Most cases of superior vena cava (SVC) syndrome are secondary to malignant disease and subacute in their presentation. Acute cases of SVC syndrome have been described, with the majority of these being precipitated by thrombosis after central venous catheterization. The authors report a case of acute SVC syndrome after central venous catheter placement, which was not due to thrombosis, but rather caused by a catheter occluding a previously subclinical stenosis of the SVC. Resolution of the clinical SVC syndrome occurred after catheter withdrawal. C1 USAF,MED CTR,DEPT SURG,WRIGHT PATTERSON AFB,OH 45433. USAF,MED CTR,DEPT HEMATOL ONCOL,WRIGHT PATTERSON AFB,OH 45433. USAF,MED CTR,DEPT RADIOL,WRIGHT PATTERSON AFB,OH 45433. NR 8 TC 14 Z9 15 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 0008-543X J9 CANCER JI Cancer PD APR 15 PY 1993 VL 71 IS 8 BP 2621 EP 2623 DI 10.1002/1097-0142(19930415)71:8<2621::AID-CNCR2820710829>3.0.CO;2-V PG 3 WC Oncology SC Oncology GA KW562 UT WOS:A1993KW56200028 PM 8453586 ER PT J AU IYER, S HEGDE, S BAJAJ, KK ABULFADL, A MITCHEL, W AF IYER, S HEGDE, S BAJAJ, KK ABULFADL, A MITCHEL, W TI PHOTOLUMINESCENCE STUDY OF LIQUID-PHASE ELECTROEPITAXIALLY GROWN GAINASSB ON (100)GASB SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MOLECULAR-BEAM EPITAXY; GASB AB Low-temperature (4.5 K) photoluminescence (PL) spectra of liquid phase electroepitaxially grown GaSb and GaInAsSb have been examined. The excitonic transitions observed in GaSb and GaInAsSb layers of compositions close to the GaSb comer of the phase diagram indicate an excellent quality of the grown layers. A systematic trend in the low-temperature PL spectra is observed with the change in the alloy composition. The overall PL emission efficiency decreases and the number of excitonic transitions are fewer with the shift in the composition towards the lower band gap. Shift in the PL peak energy corresponding to the band to band transition with temperature was determined. The linear part of the shift above 100 K exhibits a slope of -0.3 meV/K. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. EMORY UNIV,DEPT PHYS,ATLANTA,GA 30322. WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP IYER, S (reprint author), N CAROLINA AGR & TECH STATE UNIV,DEPT ELECT ENGN,GREENSBORO,NC 27411, USA. NR 23 TC 17 Z9 17 U1 3 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 15 PY 1993 VL 73 IS 8 BP 3958 EP 3961 DI 10.1063/1.352859 PG 4 WC Physics, Applied SC Physics GA KY567 UT WOS:A1993KY56700056 ER PT J AU HOBGOOD, HM HENNINGSEN, T THOMAS, RN HOPKINS, RH OHMER, MC MITCHEL, WC FISCHER, DW HEGDE, SM HOPKINS, FK AF HOBGOOD, HM HENNINGSEN, T THOMAS, RN HOPKINS, RH OHMER, MC MITCHEL, WC FISCHER, DW HEGDE, SM HOPKINS, FK TI ZNGEP2 GROWN BY THE LIQUID ENCAPSULATED CZOCHRALSKI METHOD SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CDSE; GAAS AB The growth of ZnGeP2 by the liquid encapsulated Czochralski method is reported for the first time herein. Large boules of ZnGeP2, with diameters up to 40 mm and weights up to 400 gm were grown by Czochralski pulling from B2O3 encapsulated melts under high pressure (20 atm Ar) using axial gradients < 120-degrees-C/cm. Boules pulled at < 4 mm/h exhibited large (50 X 20 X 15 mm3) monocrystalline grains of alpha-phase ZnGeP2 With room temperature electrical properties of p-type conduction, carrier concentrations ranging from 10(12) to 10(16) CM-3, and mobilities of 20 cm2/V S or less. Optical samples exhibited broad IR transmission (0.7 to 12.5 mum), second harmonic generation at 4.7 mum with 7.2% conversion efficiency, a broad subband gap photoluminescence signature, and near band-edge absorption similar to that observed in Bridgman-grown ZnGeP2. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP HOBGOOD, HM (reprint author), WESTINGHOUSE ELECT CORP,CTR SCI & TECHNOL,PITTSBURGH,PA 15235, USA. NR 29 TC 41 Z9 46 U1 2 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 15 PY 1993 VL 73 IS 8 BP 4030 EP 4037 DI 10.1063/1.352870 PG 8 WC Physics, Applied SC Physics GA KY567 UT WOS:A1993KY56700067 ER PT J AU WONG, MT WARREN, RQ ANDERSON, SA DOLAN, MJ MELCHER, GP BOSWELL, RN KENNEDY, RC AF WONG, MT WARREN, RQ ANDERSON, SA DOLAN, MJ MELCHER, GP BOSWELL, RN KENNEDY, RC TI ANTIBODY FINE SPECIFICITY TO HIV-1 GP160 EPITOPES IN GROUPS OF HIV-1 INFECTED INDIVIDUALS AND CORRELATION WITH CLINICAL-DISEASE PROGRESSION SO JOURNAL OF IMMUNOLOGY LA English DT Meeting Abstract C1 SW FDN BIOMED RES,SAN ANTONIO,TX 78228. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD APR 15 PY 1993 VL 150 IS 8 BP A241 EP A241 PN 2 PG 1 WC Immunology SC Immunology GA KX956 UT WOS:A1993KX95601389 ER PT J AU MAH, T SUBRAMANIAN, PR MATSON, LE AF MAH, T SUBRAMANIAN, PR MATSON, LE TI SOLID-STATE REACTIONS BETWEEN SELECTED INTERMETALLICS AND OXIDES IN THE AL-Y-O SYSTEM SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 WRIGHT LAB,MATERIALS DIRECTORATE,WL MLLM,WRIGHT PATTERSON AFB,OH 45433. RP MAH, T (reprint author), UES INC,DIV MAT RES,DAYTON,OH 45432, USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD APR 15 PY 1993 VL 28 IS 8 BP 961 EP 966 DI 10.1016/0956-716X(93)90063-X PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA KR717 UT WOS:A1993KR71700013 ER PT J AU PRASAD, SV MECKLENBURG, KR AF PRASAD, SV MECKLENBURG, KR TI FRICTION BEHAVIOR OF CERAMIC FIBER-REINFORCED ALUMINUM METAL-MATRIX COMPOSITES AGAINST A 440C STEEL COUNTERFACE SO WEAR LA English DT Article; Proceedings Paper CT 9TH INTERNATIONAL CONF ON WEAR OF MATERIALS CY APR 13-16, 1993 CL SAN FRANCISCO, CA ID FIBROUS PREFORMS; PURE METAL; PARTICLE COMPOSITES; INFILTRATION; GRAPHITE; TRIBOLOGY AB This paper describes the friction behavior of kaowool (Al2O3 . SiO2) and saffil (Al2O3) fiber-reinforced aluminum metal-matrix composites (MMCs) prepared by the squeeze infiltration technique. A hypoeutectic Al-Si alloy was used as the matrix. Friction measurements were made using a ball-on-disc configuration, in which a 440C stainless steel ball was held against a rotating MMC disc. Wear tracks on MMC discs and material transfer to the steel counterface were examined using a scanning electron microscope equipped with an energy dispersive X-ray spectroscope. There were no significant differences in the friction behavior of the three MMCs and the unreinforced alloy when metallograpbically polished samples were used as test specimens. In all four cases, the friction trace was rough with large fluctuations in friction force; the coefficients of friction varied between 0.4 and 0.6. When the surface of the MMC was etched, the friction coefficient dropped to a low value of 0.18 and the stick-slip type behavior disappeared. With increase in normal load (and sliding distance), the stick-slip type behavior, characteristic of polished surfaces, reappeared. The transition from smooth to stick-slip type behavior is correlated to the microstructure and surface topography of the MMC. Factors influencing the transfer of aluminum (from the MMC disc) to steel are discussed. RP PRASAD, SV (reprint author), MLBT,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 26 Z9 26 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD APR 13 PY 1993 VL 162 BP 47 EP 56 DI 10.1016/0043-1648(93)90483-3 PN A PG 10 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA KY195 UT WOS:A1993KY19500007 ER PT J AU LICHTENHAN, JD VU, NQ CARTER, JA GILMAN, JW FEHER, FJ AF LICHTENHAN, JD VU, NQ CARTER, JA GILMAN, JW FEHER, FJ TI SILSESQUIOXANE SILOXANE COPOLYMERS FROM POLYHEDRAL SILSESQUIOXANES SO MACROMOLECULES LA English DT Article ID POLYMERS C1 USAF, PHILLIPS LAB, ROCKET PROP DIRECTORATE, EDWARDS AFB, CA 93524 USA. UNIV CALIF IRVINE, DEPT CHEM, IRVINE, CA 92715 USA. RP LICHTENHAN, JD (reprint author), UNIV DAYTON, RES INST, PHILLIPS LAB, ROCKET PROP DIRECTORATE, EDWARDS AFB, CA 93524 USA. NR 21 TC 261 Z9 274 U1 3 U2 25 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 12 PY 1993 VL 26 IS 8 BP 2141 EP 2142 DI 10.1021/ma00060a053 PG 2 WC Polymer Science SC Polymer Science GA KX866 UT WOS:A1993KX86600053 ER PT J AU YOO, MH SASS, SL FU, CL MILLS, MJ DIMIDUK, DM GEORGE, EP AF YOO, MH SASS, SL FU, CL MILLS, MJ DIMIDUK, DM GEORGE, EP TI DEFORMATION AND FRACTURE OF INTERMETALLICS SO ACTA METALLURGICA ET MATERIALIA LA English DT Review ID QUANTUM-MECHANICAL CALCULATION; GRAIN-BOUNDARIES; YIELD STRESS; NI3AL; METALS; BORON; ALLOYS AB Recent advances in our understanding of the fundamental mechanisms of strength and ductility in ordered intermetallic alloys are summarized. State of the art experimental techniques and innovative computational advances have together stimulated the current activity in this field and opened new opportunities for research. The current status and scientific issues in the area of bulk and defect properties, deformation and strengthening mechanisms, and fracture and toughening mechanisms are assessed, Future research areas of major importance for understanding of deformation and fracture behavior in intermetallic compounds are identified. C1 CORNELL UNIV, DEPT MAT SCI & ENGN, ITHACA, NY 14853 USA. SANDIA NATL LABS, DEPT MAT, LIVERMORE, CA 94551 USA. WRIGHT LAB, MAT DIRECTORATE, WL MLLM, WRIGHT PATTERSON AFB, OH 45433 USA. RP YOO, MH (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, OAK RIDGE, TN 37831 USA. RI George, Easo/L-5434-2014 NR 68 TC 75 Z9 77 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD APR PY 1993 VL 41 IS 4 BP 987 EP 1002 DI 10.1016/0956-7151(93)90148-L PG 16 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA KT083 UT WOS:A1993KT08300001 ER PT J AU RIZZETTA, DP VISBAL, MR AF RIZZETTA, DP VISBAL, MR TI COMPARATIVE NUMERICAL STUDY OF 2 TURBULENCE MODELS FOR AIRFOIL STATIC AND DYNAMIC STALL SO AIAA JOURNAL LA English DT Note ID NAVIER-STOKES EQUATIONS RP RIZZETTA, DP (reprint author), USAF,WRIGHT AERONAUT LABS,DIV AEROMECH,COMP FLUID DYNAM RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 19 Z9 19 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD APR PY 1993 VL 31 IS 4 BP 784 EP 786 DI 10.2514/3.49022 PG 3 WC Engineering, Aerospace SC Engineering GA KY250 UT WOS:A1993KY25000025 ER PT J AU LUNDBERG, D AF LUNDBERG, D TI AP BIOLOGY - AN ALTERNATIVE LABORATORY APPROACH SO AMERICAN BIOLOGY TEACHER LA English DT Article RP LUNDBERG, D (reprint author), USAF ACAD,AIR ACAD HIGH SCH,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NATL ASSOC BIOLOGY TEACHERS INC PI RESTON PA 11250 ROGER BACON DR #19, RESTON, VA 22090 SN 0002-7685 J9 AM BIOL TEACH JI Am. Biol. Teach. PD APR PY 1993 VL 55 IS 4 BP 213 EP 215 PG 3 WC Biology; Education, Scientific Disciplines SC Life Sciences & Biomedicine - Other Topics; Education & Educational Research GA KW145 UT WOS:A1993KW14500008 ER PT J AU HANKINS, GDV SNYDER, RR CLARK, SL SCHWARTZ, L PATTERSON, WR BUTZIN, CA AF HANKINS, GDV SNYDER, RR CLARK, SL SCHWARTZ, L PATTERSON, WR BUTZIN, CA TI ACUTE HEMODYNAMIC AND RESPIRATORY EFFECTS OF AMNIOTIC-FLUID EMBOLISM IN THE PREGNANT GOAT MODEL SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article; Proceedings Paper CT 11TH ANNUAL MEETING OF THE AMERICAN GYNECOLOGICAL AND OBSTETRICAL SOC CY SEP 10-12, 1992 CL HOT SPRINGS, VA SP AMER GYNECOL & OBSTETR SOC DE AMNIOTIC FLUID EMBOLISM; CENTRAL HEMODYNAMICS; PULMONARY ARTERY CATHETER; MECONIUM; PO2, PCO2 ID HEART AB OBJECTIVE: Our purpose was to determine the acute-phase central hemodynamic and respiratory effects of raw, filtered, filtered and boiled, and meconium-containing amniotic fluid. STUDY DESIGN: Pregnant goats (Capra hircus) in the last one third of pregnancy were given freshly collected autologous amniotic fluid in a volume of 2.5 ml/kg of body weight. Observations were then made at 10, 30, 60, 120, and 180 minutes after amniotic fluid embolism. Pulmonary artery catheters and femoral artery lung water catheters were placed for specimen and data collection. RESULTS: Marked pressor responses were observed in both the pulmonary and systemic circulations with all amniotic fluid infusions. The pressor response was similar with raw, filtered, and filtered and boiled amniotic fluid. The pressor response seen with amniotic fluid containing meconium was significantly greater than that seen with the other forms. No significant effects were observed on cardiac or respiratory function except in the meconium group, where transient left ventricular dysfunction was accompanied by an acute increase in extravascular lung water and dysoxia. CONCLUSIONS: The Capra hircus model is appropriate for the further study of amniotic fluid embolism. The acute pressor effects are transient and involve both the systemic and pulmonary circulations. Left ventricular dysfunction and dysoxia were observed only with embolism of amniotic fluid containing meconium. C1 UNIV UTAH,MED CTR,DEPT OBSTET & GYNECOL,SALT LAKE CITY,UT 84112. RP HANKINS, GDV (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,SGH0,LACKLAND AFB,TX 78236, USA. NR 38 TC 34 Z9 36 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD APR PY 1993 VL 168 IS 4 BP 1113 EP 1130 PG 18 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA KY813 UT WOS:A1993KY81300008 PM 8475957 ER PT J AU MCDUFFIE, MW BROWN, FH RAINES, WH AF MCDUFFIE, MW BROWN, FH RAINES, WH TI PNEUMOPAROTITIS WITH ORTHODONTIC TREATMENT SO AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS LA English DT Article AB A case report of pneumoparotitis associated with orthodontic treatment is presented with a brief review of the literature. C1 USAF,DEPT ORTHODONT,EGLIN AFB,FL 32542. USAF,DEPT PERIODONT,EGLIN AFB,FL 32542. USAF,ADV CLIN DENT PROGRAM,EGLIN AFB,FL 32542. NR 18 TC 9 Z9 9 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0889-5406 J9 AM J ORTHOD DENTOFAC JI Am. J. Orthod. Dentofac. Orthop. PD APR PY 1993 VL 103 IS 4 BP 377 EP 379 DI 10.1016/0889-5406(93)70021-F PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA KY868 UT WOS:A1993KY86800016 PM 8480705 ER PT J AU DERDAK, S ANDRZEJEWSKI, C TOMSKI, S DIXON, P HENSLEY, R PHIPPS, R AF DERDAK, S ANDRZEJEWSKI, C TOMSKI, S DIXON, P HENSLEY, R PHIPPS, R TI CONSTITUTIVE EXPRESSION OF CD13/AMINOPEPTIDASE-N BY HUMAN LUNG FIBROBLASTS SO AMERICAN REVIEW OF RESPIRATORY DISEASE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER LUNG ASSOC PI NEW YORK PA 1740 BROADWAY, NEW YORK, NY 10019 SN 0003-0805 J9 AM REV RESPIR DIS JI Am. Rev. Respir. Dis. PD APR PY 1993 VL 147 IS 4 SU S BP A156 EP A156 PG 1 WC Respiratory System SC Respiratory System GA LB149 UT WOS:A1993LB14900569 ER PT J AU EPSTEIN, LJ STROLLO, PJ WESTBROOK, PR AF EPSTEIN, LJ STROLLO, PJ WESTBROOK, PR TI SEVERE OBSTRUCTIVE SLEEP-APNEA IN HIV-INFECTED MEN - A CASE SERIES SO AMERICAN REVIEW OF RESPIRATORY DISEASE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. CEDARS SINAI MED CTR,LOS ANGELES,CA 90048. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER LUNG ASSOC PI NEW YORK PA 1740 BROADWAY, NEW YORK, NY 10019 SN 0003-0805 J9 AM REV RESPIR DIS JI Am. Rev. Respir. Dis. PD APR PY 1993 VL 147 IS 4 SU S BP A234 EP A234 PG 1 WC Respiratory System SC Respiratory System GA LB149 UT WOS:A1993LB14900871 ER PT J AU STERLING, JL STROLLO, PJ AF STERLING, JL STROLLO, PJ TI AROUSAL INDEX AS A PREDICTOR OF EXCESSIVE DAYTIME SOMNOLENCE IN NON-APNEIC SNORERS SO AMERICAN REVIEW OF RESPIRATORY DISEASE LA English DT Meeting Abstract ID SLEEP C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER LUNG ASSOC PI NEW YORK PA 1740 BROADWAY, NEW YORK, NY 10019 SN 0003-0805 J9 AM REV RESPIR DIS JI Am. Rev. Respir. Dis. PD APR PY 1993 VL 147 IS 4 SU S BP A685 EP A685 PG 1 WC Respiratory System SC Respiratory System GA LB149 UT WOS:A1993LB14902621 ER PT J AU FINKELSTEIN, JA OKEEFE, KP BUTZIN, CA AF FINKELSTEIN, JA OKEEFE, KP BUTZIN, CA TI MAGNESIUM IN ACUTE MYOCARDIAL-INFARCTION SO ANNALS OF EMERGENCY MEDICINE LA English DT Article RP FINKELSTEIN, JA (reprint author), WILFORD HALL USAF MED CTR,SGHAE,EMERGENCY SERV,LACKLAND AFB,TX 78236, USA. NR 0 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 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD APR PY 1993 VL 22 IS 4 BP 754 EP 756 DI 10.1016/S0196-0644(05)81866-9 PG 3 WC Emergency Medicine SC Emergency Medicine GA KU209 UT WOS:A1993KU20900026 PM 8457112 ER PT J AU CRUM, TD ALBERTY, RL BURGESS, DW AF CRUM, TD ALBERTY, RL BURGESS, DW TI RECORDING, ARCHIVING, AND USING WSR-88D DATA SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY LA English DT Article ID NEXRAD AB In order to support NEXRAD program requirements, WSR-88D systems have the capability to record data and products at four levels. Of these, level II (base data) and level III (products) will be most commonly available for various applications by a wide range of users. This paper overviews the data-recording capabilities of the WSR-88D system, plans for recording and archiving these data, and some uses for these data. C1 WSR-88D OPERAT SUPPORT FACIL,NORMAN,OK. RP CRUM, TD (reprint author), USAF,HEADQUARTERS AIR WEATHER SERV,OPERATING LOCAT K,NORMAN,OK, USA. NR 8 TC 157 Z9 157 U1 1 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0003-0007 J9 B AM METEOROL SOC JI Bull. Amer. Meteorol. Soc. PD APR PY 1993 VL 74 IS 4 BP 645 EP 653 DI 10.1175/1520-0477(1993)074<0645:RAAUWD>2.0.CO;2 PG 9 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KY078 UT WOS:A1993KY07800009 ER PT J AU MANGINO, SG ZANDT, G AMMON, CJ AF MANGINO, SG ZANDT, G AMMON, CJ TI THE RECEIVER STRUCTURE BENEATH MINA, NEVADA SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID TELESEISMIC P-WAVEFORMS; CRUSTAL STRUCTURE; SEISMIC REFRACTION; GREAT-BASIN; BODY-WAVES; LITHOSPHERE; WASHINGTON; INVERSION; RANGE AB Receiver functions obtained from broadband teleseismic P waveforms recorded at seismic station MNV, near Mina, Nevada, are inverted for the vertical shear-wave velocity structure southeast of the station. The time-domain inversion procedure for vertically heterogeneous and laterally homogeneous one-dimensional models includes smoothness constraints to minimize model roughness and a pseudo-Monte-Carlo approach to investigate the nonuniqueness of the solution models. We also report on the potential effects of scattering on a receiver function inversion for a one-dimensional velocity structure. MNV receiver functions sample the Walker Belt crust and upper mantle beneath the Soda Spring Valley and Pilot Mountains to the east and the Garfield Hills and Excelsior Mountains to the west of the station. The preferred southeast solution models show a smooth positive gradient in the mid- and lower crust with the top of the crust-mantle boundary at 34- to 36-km depth, reaching an upper-mantle P velocity of 7.8 to 7.9 km sec-1 between 38 and 40 km. These results suggest that the crust beneath MNV may be representative of a transition zone between typical Basin and Range province crust to the east and a thicker Sierran block to the west of the station. C1 USAF,DIV EARTH SCI,GEOPHYS LAB,BEDFORD,MA 01731. PENN STATE UNIV,DEPT GEOSCI,STATE COLL,PA 16802. LAWRENCE LIVERMORE NATL LAB,INST GEOPHYS & PLANETARY SCI,LIVERMORE,CA 94550. NR 32 TC 20 Z9 20 U1 2 U2 2 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD APR PY 1993 VL 83 IS 2 BP 542 EP 560 PG 19 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA KT736 UT WOS:A1993KT73600014 ER PT J AU GAMEL, JW MCLEAN, IW MCCURDY, JB AF GAMEL, JW MCLEAN, IW MCCURDY, JB TI BIOLOGIC DISTINCTIONS BETWEEN CURE AND TIME TO DEATH IN 2892 PATIENTS WITH INTRAOCULAR MELANOMA SO CANCER LA English DT Article DE INTRAOCULAR MELANOMA; LOG-NORMAL MODEL; CURED FRACTION; SURVIVAL TIME; TUMOR SIZE; NUCLEOLI ID CANCER AB Background. For certain types of cancer, resection alone rarely achieves a cure, but patients nevertheless tend to have a prolonged survival before they die of the tumor. For other types of cancer, the opposite scenario prevails, suggesting that those biologic mechanisms that allow a curative resection are not identical to those that determine survival time among uncured patients. Methods. The multivariate log-normal model can be used to detect the association of cured fraction and median survival time of patients with specific prognostic covariates. This model was applied to survival data from 2892 patients with intraocular melanoma who were treated by enucleation. Results. This analysis showed that large tumor size and pleomorphic nucleoli within the tumor were associated independently with a low probability of cure and short median survival time. Advanced patient age and mixed cell type, however, were highly associated with only a short median survival time. Conclusions. For patients with intraocular melanoma treated only by enucleation, the median survival time is not modulated by the same biologic factors that determine the likelihood of a curative resection. C1 UNIV LOUISVILLE,HLTH SCI CTR,SCH MED,DEPT OPHTHALMOL,LOUISVILLE,KY 40202. USAF,INST PATHOL,DEPT OPHTHALM PATHOL,WASHINGTON,DC 20330. VET ADM MED CTR,LOUISVILLE,KY 40202. NR 15 TC 60 Z9 60 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 0008-543X J9 CANCER JI Cancer PD APR 1 PY 1993 VL 71 IS 7 BP 2299 EP 2305 DI 10.1002/1097-0142(19930401)71:7<2299::AID-CNCR2820710721>3.0.CO;2-G PG 7 WC Oncology SC Oncology GA KU002 UT WOS:A1993KU00200020 PM 8453550 ER PT J AU ZABARNICK, S AF ZABARNICK, S TI KINETICS OF THE REACTION OH+NO+M-]HONO+M AS A FUNCTION OF TEMPERATURE AND PRESSURE IN THE PRESENCE OF ARGON, SF6, AND N-2 BATH GAS SO CHEMICAL PHYSICS LA English DT Article ID RADICAL REACTIONS; PHASE REACTIONS; OH; NO; OH+NO+M; HCN AB The laser photolysis/laser-induced fluorescence technique is used for the direct measurement of the reaction OH+ NO+M-->HONO+M over the temperature range 298-431 K and over the pressure range 50-400 Torr. Rate constants are measured for the following bath gases: argon, sulfur hexafluoride, and nitrogen. The laser photolysis of nitric acid vapor, HNO3, at 248 nm is used for the production of OH radicals. The relative concentration of these OH radicals are probed by laser-induced fluorescence. Experiments are performed under pseudo-first-order conditions, where [OH] much less than [NO]. Good agreement is observed with previous room temperature measurements. These measurements show that the high pressure limit is far from being reached even at 400 Torr of SF6. C1 USAF,PHILLIPS LAB,EDWARDS AFB,CA. RP ZABARNICK, S (reprint author), UNIV DAYTON,RES INST,300 COLL PK,KL-463,DAYTON,OH 45469, USA. NR 20 TC 8 Z9 8 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0104 J9 CHEM PHYS JI Chem. Phys. PD APR 1 PY 1993 VL 171 IS 1-2 BP 265 EP 273 DI 10.1016/0301-0104(93)85149-3 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA KV223 UT WOS:A1993KV22300023 ER PT J AU SCHWERTNER, HA MOSSER, EL AF SCHWERTNER, HA MOSSER, EL TI COMPARISON OF LIPID FATTY-ACIDS ON A CONCENTRATION BASIS VS WEIGHT PERCENTAGE BASIS IN PATIENTS WITH AND WITHOUT CORONARY-ARTERY DISEASE OR DIABETES SO CLINICAL CHEMISTRY LA English DT Note DE CHOLESTERYL ESTERS; PHOSPHOLIPIDS; CHROMATOGRAPHY, THIN-LAYER; CHROMATOGRAPHY, GAS LIQUID ID MIDDLE-AGED MEN; SERUM-LIPIDS AB Lipid fatty acid compositions are almost always expressed on a weight percentage basis rather than as weight or molar concentrations. With the former method of calculation, each fatty acid has an effect on the composition of the other fatty acids, an interdependence that can potentially lead to inaccurate and misleading results. Here we compare the concentrations per liter and the weight percentage compositions of cholesteryl ester and phospholipid fatty acids in individuals with and without coronary artery disease as well as free fatty acid compositions in individuals with and without diabetes. A new method for quantifying lipid fatty acids is also presented. Fatty acid results expressed as concentrations and those calculated on a weight percentage basis may lead to different conclusions, because significant differences between patient groups can be lost with the latter approach. We conclude that serum concentrations of lipid fatty acids are more accurate reflections of changes in lipid fatty acids than are weight percentage calculations, and are more easily interpreted in metabolic and therapeutic terms. RP SCHWERTNER, HA (reprint author), USAF,CTR MED,CLIN INVEST DIRECTORATE,WILFORD HALL,1255 WILFORD HALL LOOP,LACKLAND AFB,TX 78236, USA. NR 20 TC 33 Z9 33 U1 0 U2 0 PU AMER ASSOC CLINICAL CHEMISTRY PI WASHINGTON PA 2101 L STREET NW, SUITE 202, WASHINGTON, DC 20037-1526 SN 0009-9147 J9 CLIN CHEM JI Clin. Chem. PD APR PY 1993 VL 39 IS 4 BP 659 EP 663 PG 5 WC Medical Laboratory Technology SC Medical Laboratory Technology GA KY291 UT WOS:A1993KY29100016 PM 8472362 ER PT J AU FERRANTE, MA DOLAN, MJ AF FERRANTE, MA DOLAN, MJ TI Q-FEVER MENINGOENCEPHALITIS IN A SOLDIER RETURNING FROM THE PERSIAN-GULF-WAR SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID BILATERAL OPTIC NEURITIS; COXIELLA-BURNETII; PHASE-I; ENCEPHALITIS; ENDOCARDITIS; INFECTION; RESPONSES; PNEUMONIA; ANTIBODY AB Acute infection with Coxiella burnetii usually results in a self-limited illness requiring a high index of clinical suspicion for diagnosis. Although headache is a common presentation of acute infection with this agent, focal neurological deficits are considered to be limited to chronic infection, most commonly caused by emboli from endocarditis. We report the case of a soldier returning from Desert Storm who presented with headache and a crescendo pattern of transient ischemic attacks and had serology consistent with an acute Q fever infection. The English-language literature on central nervous system infection caused by Coxiella burnetii is reviewed. C1 WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT NEUROL,LACKLAND AFB,TX 78236. NR 47 TC 42 Z9 42 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD APR PY 1993 VL 16 IS 4 BP 489 EP 496 PG 8 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA KU977 UT WOS:A1993KU97700008 PM 8513053 ER PT J AU GOODWIN, DA LALLY, KP NULL, DM AF GOODWIN, DA LALLY, KP NULL, DM TI EXTRACORPOREAL MEMBRANE-OXYGENATION SUPPORT FOR CARDIAC DYSFUNCTION FROM TRICYCLIC ANTIDEPRESSANT OVERDOSE SO CRITICAL CARE MEDICINE LA English DT Article DE EXTRACORPOREAL MEMBRANE OXYGENATION; TRICYCLIC ANTIDEPRESSANT AGENTS; HYPOTENSION; INTENSIVE CARE UNIT, PEDIATRICS; OVERDOSE; BRADYCARDIA; NEUROTRANSMITTERS; MYOCARDIAL DISEASES; CARDIAC ARREST; VASOPRESSORS C1 UNIV TEXAS,HLTH SCI CTR,6431 FANNIN,SUITE 6264,HOUSTON,TX 77030. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 9 TC 20 Z9 20 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 APR PY 1993 VL 21 IS 4 BP 625 EP 627 DI 10.1097/00003246-199304000-00025 PG 3 WC Critical Care Medicine SC General & Internal Medicine GA KY919 UT WOS:A1993KY91900025 PM 8472584 ER PT J AU SHELDON, SN MAYBECK, PS AF SHELDON, SN MAYBECK, PS TI AN OPTIMIZING DESIGN STRATEGY FOR MULTIPLE MODEL ADAPTIVE ESTIMATION AND CONTROL SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL LA English DT Note AB A method is proposed for designing Multiple Model Adaptive Estimators to provide combined state and parameter estimation in the presence of an uncertain parameter vector. It is assumed that the parameter varies over a continuous region and a finite number of constant-gain filters are available for the estimation. The estimator elemental filters are chosen by minimizing a cost functional representing the average state prediction error autocorrelation, with the average taken as the true parameter ranges over the admissible parameter set. An analogous method is proposed for designing Multiple Model Adaptive Regulators to provide stabilizing control in the presence of an uncertain parameter vector by minimizing a cost functional representing the average regulation error autocorrelation, with the average taken as the true parameter ranges over the admissible parameter set. An example is used to demonstrate the improvement in performance over previously accepted design methods. C1 USAF,INST TECHNOL,ENG,WRIGHT PATTERSON AFB,OH 45433. NR 6 TC 23 Z9 26 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 0018-9286 J9 IEEE T AUTOMAT CONTR JI IEEE Trans. Autom. Control PD APR PY 1993 VL 38 IS 4 BP 651 EP 654 DI 10.1109/9.250541 PG 4 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA LE053 UT WOS:A1993LE05300022 ER PT J AU FREDERICKSON, AR MULLEN, EG KERNS, KJ ROBINSON, PA HOLEMAN, EG AF FREDERICKSON, AR MULLEN, EG KERNS, KJ ROBINSON, PA HOLEMAN, EG TI THE CRRES-IDM SPACECRAFT EXPERIMENT FOR INSULATOR DISCHARGE PULSES SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SURFACES; SCATHA AB The Internal Discharge Monitor (IDM) is designed to observe electrical pulses from common electrical insulators in space service. The characteristics of the instrument are described. The IDM was flown on the Combined Release and Radiation Effects Satellite (CRRES). The sixteen insulator samples included G10 circuit boards, FR4 and PTFE fiberglass circuit boards, FEP Teflon, alumina, and wires with common insulations. The samples are fully enclosed, mutually isolated, and space radiation penetrates 0.02 cm of aluminum before striking the samples. Published data in the literature provides a simple method for determining the flux of penetrating electrons. The pulse rate is compared to the penetrating flux of electrons. C1 BOSTON COLL,CHESTNUT HILL,MA 02167. CALTECH,JET PROPULS LAB,PASADENA,CA 91103. RP FREDERICKSON, AR (reprint author), USAF,PHILLIPS LAB GEOPHYS DIRECTORATE,BEDFORD,MA 01731, USA. NR 24 TC 15 Z9 16 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1993 VL 40 IS 2 BP 233 EP 241 DI 10.1109/23.212347 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA LA062 UT WOS:A1993LA06200029 ER PT J AU VIOLET, MD LYNCH, K REDUS, R RIEHL, K BOUGHAN, E HEIN, C AF VIOLET, MD LYNCH, K REDUS, R RIEHL, K BOUGHAN, E HEIN, C TI PROTON TELESCOPE (PROTEL) ON THE CRRES SPACECRAFT SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB This report describes the design and operation of the Proton Telescope (PROTEL) on the Combined Release and Radiation Effects Satellite (CRRES) which operated in a low inclination, geosynchronous transfer orbit from 25 July 1990 to 12 October 1991. PROTEL makes well-calibrated, high angular resolution measurements of the proton differential energy spectrum once per second from 1 to 100 MeV in 24 channels. The instrument contains silicon solid-state detector arrays with both anticoincidence and multiple coincidence requirements to reduce contamination. The detector and channel characteristics derived from an extensive calibration program are provided, and initial performance and data analysis are discussed. C1 RADIAT MONITORING DEVICES INC,WATERTOWN,MA 02172. MIT,CTR SPACE RES,CAMBRIDGE,MA 02139. UNIV NEW HAMPSHIRE,SSC SERB,CTR SPACE SCI,DEPT PHYS,DURHAM,NH 03824. USAF,INST TECHNOL,DEPT PHYS,WRIGHT PATTERSON AFB,OH 45433. RP VIOLET, MD (reprint author), PL PHP PHILLIPS LAB,BEDFORD,MA 01731, USA. NR 6 TC 19 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1993 VL 40 IS 2 BP 242 EP 245 DI 10.1109/23.212348 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA LA062 UT WOS:A1993LA06200030 ER PT J AU CHAIKEN, SR AF CHAIKEN, SR TI TEST-PROXIMITY EFFECTS IN A SINGLE-SESSION INDIVIDUAL-DIFFERENCES STUDY OF LEARNING-ABILITY - THE CASE OF ACTIVATION SAVINGS SO INTELLIGENCE LA English DT Article ID SKILL ACQUISITION AB In Woltz (1988a), an ability measure, activation savings, was shown to be related to a cognitive skill only after the skill had been practiced. However, the experimental design administered the skill learning first and the ability measure second in the same session. Therefore, the savings measure could be consequential to practiced skill, not because of cognitive overlap, but because of the proximity of savings' measurement to the measurement of practiced skill. This possibility was assessed using a single-session design in which an activation-savings measure was given in alternate forms before and after the learning task. Proximity effects were large in the full sample, as only the after-form of the predictor correlated to practiced skill. However, Woltz's basic result replicated for both before and after predictors when extreme scorers were excluded, although test-proximity effects were also observed in the remaining subjects. Implications are discussed for single-session individual differences research involving stages of skill acquisition and specific cognitive abilities. RP CHAIKEN, SR (reprint author), ARMSTRONG LAB,AL HRMIL,BROOKS AFB,TX 78235, USA. NR 12 TC 2 Z9 2 U1 0 U2 0 PU ABLEX PUBL CORP PI NORWOOD PA 355 CHESTNUT ST, NORWOOD, NJ 07648 SN 0160-2896 J9 INTELLIGENCE JI Intelligence PD APR-JUN PY 1993 VL 17 IS 2 BP 173 EP 190 DI 10.1016/0160-2896(93)90026-2 PG 18 WC Psychology, Multidisciplinary SC Psychology GA LL495 UT WOS:A1993LL49500004 ER PT J AU MOREHEAD, JM PARSONS, DS AF MOREHEAD, JM PARSONS, DS TI TRACHEOBRONCHOMALACIA IN HUNTERS SYNDROME SO INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY LA English DT Article DE MUCOPOLYSACCHARIDOSES; MAJOR AIRWAY COLLAPSE (MAC); TRACHEOBRONCHOMALACIA ID MUCOPOLYSACCHARIDOSES AB Hunter's syndrome is one of a group of heritable metabolic disorders caused by decreased activity of one or more of the lysosomal enzymes responsible for mucopolysaccharide catabolism, resulting in excessive deposition of mucopolysaccharides in skeletal and soft tissues. Pulmonary conditions, such as airway obstruction, sleep apnea syndrome, atalectasis, recurrent pneumonia and difficult endotracheal intubation are known to be associated with these rare disorders and have been reported. We report the findings at laryngotracheobronchoscopy of a patient with Hunter's syndrome with airway symptoms and, supported by analysis of previously reported cases of airway problems associated with the syndrome, suggest that tracheobronchomalacia with classifiable major airway collapse (MAC) may be the pathological correlate for this clinical picture. The endoscopic technique and characteristic findings of tracheobronchomalacia/MAC are discussed, as well as the natural history and pathophysiology of this condition, which is characterized by weakness of the tracheal wall due to softening of the supporting cartilage and hypotonia of the myoelastic elements with reduction in the tracheal lumen. C1 WILFORD HALL USAF MED CTR,SGHSO,DEPT OTOLARYNGOL HEAD & NECK SURG,USAF MED CORPS,LACKLAND AFB,TX 78236. NR 14 TC 24 Z9 26 U1 0 U2 1 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0165-5876 J9 INT J PEDIATR OTORHI JI Int. J. Pediatr. Otorhinolaryngol. PD APR PY 1993 VL 26 IS 3 BP 255 EP 261 DI 10.1016/0165-5876(93)90096-L PG 7 WC Otorhinolaryngology; Pediatrics SC Otorhinolaryngology; Pediatrics GA LB609 UT WOS:A1993LB60900006 PM 8509249 ER PT J AU MIMANI, T MAYANNA, SM MUNICHANDRAIAH, N AF MIMANI, T MAYANNA, SM MUNICHANDRAIAH, N TI INFLUENCE OF ADDITIVES ON THE ELECTRODEPOSITION OF NICKEL FROM A WATTS BATH - A CYCLIC VOLTAMMETRIC STUDY SO JOURNAL OF APPLIED ELECTROCHEMISTRY LA English DT Article AB The electrochemical reactions occurring during the deposition of nickel from a Watts bath have been examined using a voltammetric technique. The important reactions taking place at the anode and cathode have been systematically identified. The influence of the additives on the cathodic and anodic reactions show the importance of careful bath preparation for a quality controlled product. From the surface coverage data, the free energy change (DELTAG(a)0) for the adsorption of the brighteners has been calculated and compared with results from methods used earlier. C1 BANGALORE UNIV,COLL CENT,BANGALORE 560001,KARNATAKA,INDIA. AFSC,WRIGHT LAB,DIV AEROSP & POWER,WRIGHT PATTERSON AFB,OH. NR 18 TC 63 Z9 64 U1 4 U2 18 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0021-891X J9 J APPL ELECTROCHEM JI J. Appl. Electrochem. PD APR PY 1993 VL 23 IS 4 BP 339 EP 345 DI 10.1007/BF00296689 PG 7 WC Electrochemistry SC Electrochemistry GA KX709 UT WOS:A1993KX70900009 ER PT J AU MUENGER, EA AF MUENGER, EA TI POPULAR IMPERIALISM AND THE MILITARY, 1850-1950 - MACKENZIE,JM SO JOURNAL OF MILITARY HISTORY LA English DT Book Review RP MUENGER, EA (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU VIRGINIA MILITARY INST PI LEXINGTON PA LEXINGTON, VA 24450 SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD APR PY 1993 VL 57 IS 2 BP 332 EP 333 DI 10.2307/2944068 PG 2 WC History SC History GA KY270 UT WOS:A1993KY27000012 ER PT J AU MILLER, RI AF MILLER, RI TI NON-HODGKINS-LYMPHOMA OF THE LIP - A CASE-REPORT SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Article ID EXTRANODAL LYMPHOMA; HEAD; NECK; AIDS C1 USAF MED CTR 11,DENT SERV,DEPT ORAL & MAXILLOFACIAL SURG,ELMENDORF AFB,AK. RP MILLER, RI (reprint author), DAVID GRANT USAF MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,SGDO,TRAVIS AFB,CA 94535, USA. NR 24 TC 7 Z9 7 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD APR PY 1993 VL 51 IS 4 BP 420 EP 422 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA KV261 UT WOS:A1993KV26100019 PM 8450362 ER PT J AU ESHELMAN, EG AF ESHELMAN, EG TI SHIM STOCK PLACEMENT FOR CONTACT EVALUATION SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Note RP ESHELMAN, EG (reprint author), USAF,MED GRP 36,SGD,PSC 11,APO AE 09132,BITBURG AIR BASE,GERMANY. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD APR PY 1993 VL 69 IS 4 BP 443 EP 443 DI 10.1016/0022-3913(93)90197-V PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA KU698 UT WOS:A1993KU69800018 PM 8463979 ER PT J AU HAYES, RJ WILEY, MG AF HAYES, RJ WILEY, MG TI REMOVAL OF RESIN-BONDED FIXED PARTIAL DENTURES SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Note C1 USAF,KLEBER DENT CLIN,LANDSTUHL,GERMANY. USAF,RAMSTEIN US AFB,GERMANY. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD APR PY 1993 VL 69 IS 4 BP 445 EP 445 DI 10.1016/0022-3913(93)90199-X PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA KU698 UT WOS:A1993KU69800020 PM 8463981 ER PT J AU SAU, P GRAHAM, JH HELWIG, EB AF SAU, P GRAHAM, JH HELWIG, EB TI PIGMENTED SPINDLE CELL NEVUS - A CLINICOPATHOLOGICAL ANALYSIS OF 95 CASES SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY LA English DT Article ID LESION; TUMOR; REED AB Background: Pigmented spindle cell nevus (PSCN) is often interpreted as a Spitz nevus or misdiagnosed as malignant melanoma. Objective. The purpose of this study was to analyze the clinical and histologic features and to determine the biologic behavior of 95 cases of PSCN. Methods. We reviewed clinical data, follow-up information, and microscopic features of all 95 cases of PSCN. Results. PSCNs are dark brown to black, 3 to 6 mm in diameter, and occur most commonly on the extremities (7 5%) and back (1 6%) with a predilection for the legs. These lesions are more common in women in the third decade of life. Microscopically, PSCNs are characterized by uniform, spindle-shaped, pigmented melanocytes. Although some histologic features overlap with those in spindle and epithelioid cell nevus, PSCN is a separate entity. In addition, PSCN must be differentiated from malignant melanoma. Fifty-seven patients (60%) observed for an average of 6 years did not develop local recurrence or metastasis. Conclusion: PSCN is a distinctive, acquired, benign melanocytic lesion, that should not be confused with spindle and epithelioid cell nevus or malignant melanoma. Complete excision is recommended for treatment. C1 USAF,INST PATHOL,WASHINGTON,DC 20330. SCRIPPS CLIN & RES FDN,DEPT PATHOL,DIV DERMATOPATHOL,LA JOLLA,CA 92037. RP SAU, P (reprint author), WALTER REED ARMY MED CTR,DEPT DERMATOL & PATHOL,DERMATOL SERV,WASHINGTON,DC 20307, USA. NR 18 TC 38 Z9 38 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 APR PY 1993 VL 28 IS 4 BP 565 EP 571 PG 7 WC Dermatology SC Dermatology GA KU482 UT WOS:A1993KU48200004 PM 8463457 ER PT J AU LAW, CH WADIA, AR AF LAW, CH WADIA, AR TI LOW ASPECT RATIO TRANSONIC ROTORS .1. BASE-LINE DESIGN AND PERFORMANCE SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 37TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 01-04, 1992 CL COLOGNE, GERMANY AB The analytical design and experimental test of a single-stage transonic axial-flow compressor are described. This design is the baseline of a compressor design study in which several blade design parameters have been systematically varied to determine their independent effects on compressor performance. The baseline design consisted of ruggedizing an existing compressor design that demonstrated outstanding aerodynamic performance, to correct some undesirable aeromechanical characteristics. The design study was performed by varying only one design parameter at a time, keeping the other design variables as close as possible to the baseline design. Specific design parameters of interest were those for which very few data were available to determine their sensitivity on compressor performance. This paper describes the baseline compressor design and its experimental performance. A detailed definition and flow analysis of the baseline design test point (used as the basis for all subsequent design variations) are provided. C1 GE AIRCRAFT ENGINES,CINCINNATI,OH 45215. RP LAW, CH (reprint author), USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 13 Z9 14 U1 1 U2 2 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD APR PY 1993 VL 115 IS 2 BP 218 EP 225 DI 10.1115/1.2929226 PG 8 WC Engineering, Mechanical SC Engineering GA KZ266 UT WOS:A1993KZ26600002 ER PT J AU WADIA, AR LAW, CH AF WADIA, AR LAW, CH TI LOW ASPECT RATIO TRANSONIC ROTORS .2. INFLUENCE OF LOCATION OF MAXIMUM THICKNESS ON TRANSONIC COMPRESSOR PERFORMANCE SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 37TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 01-04, 1992 CL COLOGNE, GERMANY AB Transonic compressor rotor performance is sensitive to variations in several known design parameters. One such parameter is the chordwise location of maximum thickness. This article reports on the design and experimental evaluation of two versions of a low aspect ratio transonic rotor that had the location of the tip blade section maximum thickness moved forward in two increments from the nominal 70 percent to 55 and 40 percent chord length, respectively. The original hub characteristics were preserved and the maximum thickness location was adjusted proportionately along the span. Although designed to satisfy identical design speed requirements, the experimental results reveal significant variation in the performance of the rotors. At design speed, the rotor with its maximum thickness located at 55 percent chord length attains the highest peak efficiency among the three rotors but has lowest flow rollback relative to the other two versions. To focus on current ruggedization issues for transonic blading (e.g., bird and ice ingestion), detailed comparison of test data and analysis to characterize the aerodynamic flow details responsible for the measured performance differences were confined to the two rotors with the most forward location of maximum thickness. A three-dimensional viscous flow analysis was used to identify the performance-enhancing features of the higher efficiency rotor and to provide guidance in the interpretation of the experimental measurements. The computational results of the viscous analysis show that the difference in performance between the two rotors can be attributed to the higher shock losses that result from the increased leading edge ''wedge angle '' as the maximum thickness is moved closer to the leading edge. The test data and the three-dimensional viscous analysis also reveal that the higher efficiency rotor achieves the same static pressure rise potential and loading at a higher flow level than its less efficient counterpart and this is responsible for its resulting lower flow rollback and apparent loss in stall margin. Comparison of the peak efficiencies attained by the two rotors described in this article with the baseline ruggedized rotor performance presented in part 1 of this paper suggests the existence of an optimum maximum thickness location at 55 to 60 percent chord length for such low aspect ratio transonic rotors. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. RP WADIA, AR (reprint author), GE AIRCRAFT ENGINES,CINCINNATI,OH 45215, USA. NR 11 TC 9 Z9 10 U1 0 U2 2 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD APR PY 1993 VL 115 IS 2 BP 226 EP 238 DI 10.1115/1.2929227 PG 13 WC Engineering, Mechanical SC Engineering GA KZ266 UT WOS:A1993KZ26600003 ER PT J AU COPENHAVER, WW HAH, C PUTERBAUGH, SL CUMPSTY, NA AF COPENHAVER, WW HAH, C PUTERBAUGH, SL CUMPSTY, NA TI 3-DIMENSIONAL FLOW PHENOMENA IN A TRANSONIC, HIGH-THROUGHFLOW, AXIAL-FLOW COMPRESSOR STAGE SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 37TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 01-04, 1992 CL COLOGNE, GERMANY AB A detailed aerodynamic study of a transonic, high-throughflow, single-stage compressor is presented. The compressor stage was comprised of a low-aspect-ratio rotor combined alternately with two different stator designs. Both experimental and numerical studies are conducted to understand the details of the complex flow field present in this stage. Aerodynamic measurements using high-frequency, Kulite pressure transducers and conventional probes are compared with results from a three-dimensional viscous flow analysis. A steady multiple blade row approach is used in the numerical technique to examine the detailed flow structure inside the rotor and the stator passages. The comparisons indicate that many flow field features are correctly captured by viscous flow analysis, and therefore unmeasured phenomena can be studied with some level of confidence. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. UNIV CAMBRIDGE,WHITTLE LAB,CAMBRIDGE,ENGLAND. RP COPENHAVER, WW (reprint author), USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 29 Z9 30 U1 0 U2 6 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD APR PY 1993 VL 115 IS 2 BP 240 EP 248 DI 10.1115/1.2929228 PG 9 WC Engineering, Mechanical SC Engineering GA KZ266 UT WOS:A1993KZ26600004 ER PT J AU NIEMTZOW, RC YARBROUGH, G HARWOOD, KL JACOBS, JL BURKETT, S GREAVES, WW REUTERSHAN, TP REBUCK, HI POSNER, S CLARK, W CHIU, A PIETRZAK, MP HOLCK, AR HEWINS, SD AF NIEMTZOW, RC YARBROUGH, G HARWOOD, KL JACOBS, JL BURKETT, S GREAVES, WW REUTERSHAN, TP REBUCK, HI POSNER, S CLARK, W CHIU, A PIETRZAK, MP HOLCK, AR HEWINS, SD TI THE AMATEUR-RADIO-EMERGENCY-SERVICE (ARES) AND THE NATIONAL-DISASTER-MEDICAL-SYSTEM (NDMS) SO MILITARY MEDICINE LA English DT Article AB The rescue, treatment, and evacuation of thousands of patients from a natural disaster or armed conflict that is coordinated by the National Disaster Medical System must be performed in accordance to health care standards recognized in this country. Without an effective communication system, morbidity and mortality will needlessly rise. A medical communication protocol that addresses this problem is proposed. RP NIEMTZOW, RC (reprint author), HOSP SERV,27TH MED GRP,CANNON AFB,NM 88103, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1993 VL 158 IS 4 BP 259 EP 263 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA KX614 UT WOS:A1993KX61400020 PM 8479634 ER PT J AU BRADFORD, VP GRAHAM, BP REINERT, KG AF BRADFORD, VP GRAHAM, BP REINERT, KG TI ACCURACY OF SELF-REPORTED HEALTH HISTORIES - A STUDY SO MILITARY MEDICINE LA English DT Article AB Many military health care providers (including most dental providers) depend on self-reported health questionnaires for critical information about their patients' medical history. These questionnaires demand high standards of patient self-awareness and integrity, and their importance justifies checking their accuracy. The authors checked the accuracy of 155 self-reported health histories by comparing them with histories documented in medical records. Although we found some discrepancies, over 95% of our sample showed reasonable agreement between self-reported medical histories and documented medical histories. RP BRADFORD, VP (reprint author), WILFORD HALL USAF MED CTR,SGDG,LACKLAND AFB,TX 78236, USA. NR 0 TC 16 Z9 16 U1 0 U2 1 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1993 VL 158 IS 4 BP 263 EP 265 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA KX614 UT WOS:A1993KX61400021 PM 8479635 ER PT J AU ZIENO, SA AF ZIENO, SA TI CHAMPUS RECAPTURE IN THE TREATMENT OF EAR INFECTIONS SO MILITARY MEDICINE LA English DT Article AB Ear infections, commonly referred to as otitis media, are one of the most commonly occurring problems of childhood. The ''hit and miss'' treatment of this disorder can result in parental frustration and early referral for surgical treatment. The application of managed care principles require that a standard approach to care be employed for the treatment of this condition. It should be high-quality, low-cost, and accessible to the patient population. The use of group appointments for common medical problems was first recommended by the military-commissioned PRISM III report of the early 1980s. It was felt that this technique could increase access and improve quality of care. A modification of this concept was tested that allowed the advantages of group parent teaching and medical history intake while preserving the individualized approach to care for a larger number of patients. This method was found to increase the productivity of the clinic by over 100%, while reducing the referral of patients outside the AF clinic to less than 1%. RP ZIENO, SA (reprint author), USAF,EHRLING BERGQUIST HOSP,MC,DEPT SURG,OFFUTT AFB,NE 68113, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1993 VL 158 IS 4 BP 273 EP 274 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA KX614 UT WOS:A1993KX61400024 PM 8479638 ER PT J AU LACY, TJ MCMANIS, SE AF LACY, TJ MCMANIS, SE TI ON VOCAL CORD DYSFUNCTION SO MILITARY MEDICINE LA English DT Letter RP LACY, TJ (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,SGHCCE,LACKLAND AFB,TX 78236, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1993 VL 158 IS 4 BP A4 EP A4 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA KX614 UT WOS:A1993KX61400001 PM 8479620 ER PT J AU WAGNER, TS AF WAGNER, TS TI EMERGENCY TRANSPORT SO MILITARY MEDICINE LA English DT Letter RP WAGNER, TS (reprint author), CORNELL UNIV,USAF,AIR FORCE INST TECHNOL,ITHACA,NY 14853, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1993 VL 158 IS 4 BP A6 EP A6 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA KX614 UT WOS:A1993KX61400004 PM 8479622 ER PT J AU PRIDDY, KL ROGERS, SK RUCK, DW TARR, GL KABRISKY, M AF PRIDDY, KL ROGERS, SK RUCK, DW TARR, GL KABRISKY, M TI BAYESIAN SELECTION OF IMPORTANT FEATURES FOR FEEDFORWARD NEURAL NETWORKS SO NEUROCOMPUTING LA English DT Article DE FEATURE SALIENCY; NEURAL NETWORKS; BAYESIAN SALIENCY METRICS AB This paper presents a probability of error based method of determining the saliency (usefulness) of input features and hidden nodes. We show that the partial derivative of the output nodes with respect to a given input feature yields a sensitivity measure for the probability of error. This partial derivative provides a saliency metric for determining the sensitivity of the feedforward network trained with a mean squared error learning procedure to a given input feature. C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 20 TC 30 Z9 30 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-2312 J9 NEUROCOMPUTING JI Neurocomputing PD APR PY 1993 VL 5 IS 2-3 BP 91 EP 103 DI 10.1016/0925-2312(93)90030-7 PG 13 WC Computer Science, Artificial Intelligence SC Computer Science GA LA964 UT WOS:A1993LA96400001 ER PT J AU WALLER, SG TABOADA, J OCONNOR, P AF WALLER, SG TABOADA, J OCONNOR, P TI RETROBULBAR ANESTHESIA RISK - DO SHARP NEEDLES REALLY PERFORATE THE EYE MORE EASILY THAN BLUNT NEEDLES SO OPHTHALMOLOGY LA English DT Article ID PERIBULBAR ANESTHESIA; GLOBE AB Purpose: Conventional wisdom in ophthalmology is that the force required to perforate an eye during retrobulbar injection is noticeably greater with a specially designed blunt needle than with a standard hypodermic needle. A search of the literature showed no measurements of scleral perforation pressure with specific needle tips. The authors investigated this concept. Methods: A computerized search for eye perforations of the surgical records over a 5-year period at Wilford Hall United States Air Force Medical Center was conducted. A double-masked trial by experienced ophthalmologists, using preserved eye bank eyes and several commercially available needles, subjectively assessed the force required to perforate the globe. The authors designed and built a portable transducer system to objectively measure the perforation pressure of human globes with the needles. Measurements were done with preserved and unpreserved human cadaver eyes. Results: No globe penetrations or perforations were found in this consecutive series of over 4000 retrobulbar anesthesia procedures. A subjective difference between the hypodermic and blunt needles was detected. Objective measurements showed a significant difference between the hypodermic and blunt needles, and between types of blunt needles. The difference was present with both eye bank eyes and fresh cadaver eyes. Conclusion: Blunt-tipped needles do require greater force to penetrate the eye. The noncutting edge, blunt-tipped needles have higher scleral perforation pressures than those with cutting edges. C1 USAF,MED CTR,DEPT OPHTHALMOL,LACKLAND AFB,TX 78236. USAF,SCH AEROSP MED,OPHTHALMOL BRANCH,BROOKS AFB,TX 78235. NR 13 TC 28 Z9 29 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0161-6420 J9 OPHTHALMOLOGY JI Ophthalmology PD APR PY 1993 VL 100 IS 4 BP 506 EP 510 PG 5 WC Ophthalmology SC Ophthalmology GA KY155 UT WOS:A1993KY15500016 PM 8479708 ER PT J AU WILLIAMS, WJ AF WILLIAMS, WJ TI ACCOMMODATING AMERICAN SHIPYARD WORKERS, 1917-1918 - THE PACIFIC COAST AND THE FEDERAL GOVERNMENTS 1ST PUBLIC-HOUSING AND TRANSIT PROGRAMS SO PACIFIC NORTHWEST QUARTERLY LA English DT Article RP WILLIAMS, WJ (reprint author), USAF ACAD,DEPT HIST,COLORADO SPRINGS,CO 80840, USA. NR 38 TC 0 Z9 0 U1 0 U2 0 PU UNIV WASHINGTON PI SEATTLE PA 4045 BROOKLYN AVENUE NE, SEATTLE, WA 98105 SN 0030-8803 J9 PAC NORTHWEST QUART JI Pac. Northwest Q. PD APR PY 1993 VL 84 IS 2 BP 51 EP 59 PG 9 WC History SC History GA LW500 UT WOS:A1993LW50000003 ER PT J AU TUTTLE, GR AF TUTTLE, GR TI CASCADING QUALITY THROUGH THE TRAINING PROCESS SO QUALITY PROGRESS LA English DT Article RP TUTTLE, GR (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0033-524X J9 QUAL PROG JI Qual. Prog. PD APR PY 1993 VL 26 IS 4 BP 75 EP 78 PG 4 WC Engineering, Multidisciplinary; Engineering, Industrial; Management; Operations Research & Management Science SC Engineering; Business & Economics; Operations Research & Management Science GA KW131 UT WOS:A1993KW13100021 ER PT J AU SMITH, DK AF SMITH, DK TI ANATOMIC FEATURES OF THE CARPAL SCAPHOID - VALIDATION OF BIOMETRIC MEASUREMENTS AND SYMMETRY WITH 3-DIMENSIONAL MR IMAGING SO RADIOLOGY LA English DT Article DE MAGNETIC RESONANCE (MR), 3-DIMENSIONAL; MAGNETIC RESONANCE (MR), TREATMENT PLANNING; WRIST, FRACTURES; WRIST ID MOTION AB The goals of reconstructive surgery for scaphoid fracture nonunions include restoration of normal scaphoid length and shape by use of the contralateral scaphoid bone as a geometric model. A literature search revealed limited documentation of normal biometric measurements and no validation of scaphoid anatomic symmetry. A study was performed to provide normative data and evaluate the right-to-left symmetry of specific geometric measurements of the scaphoid. One hundred normal carpal scaphoid bones in 30 healthy subjects and 40 patients were examined with three-dimensional magnetic resonance (MR) imaging. Standardized oblique projections were reconstructed from each three-dimensional data set, and seven biometric measurements of each scaphoid were obtained. Normative data from the study group were obtained by means of analysis of all 100 scaphoids. Right-to-left symmetry was validated with the biometric measurements of both scaphoids in the healthy subjects. These data validate scaphoid symmetry and provide 95% confidence intervals for specific biometric measurements that are used for preoperative planning of surgical reconstruction of scaphoid nonunions. RP SMITH, DK (reprint author), WILFORD HALL USAF MED CTR,DEPT DIAGNOST RADIOL,LACKLAND AFB,TX 78236, USA. NR 21 TC 11 Z9 11 U1 0 U2 0 PU RADIOLOGICAL SOC NORTH AMER PI EASTON PA 20TH AND NORTHAMPTON STS, EASTON, PA 18042 SN 0033-8419 J9 RADIOLOGY JI Radiology PD APR PY 1993 VL 187 IS 1 BP 187 EP 191 PG 5 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA KT244 UT WOS:A1993KT24400038 PM 8451410 ER PT J AU TIPTON, T JOHNSTON, CT TRABUE, SL ERICKSON, C STONE, DA AF TIPTON, T JOHNSTON, CT TRABUE, SL ERICKSON, C STONE, DA TI GRAVIMETRIC FT-IR APPARATUS FOR THE STUDY OF VAPOR SORPTION ON CLAY FILMS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Note AB An apparatus was built to collect simultaneous gravimetric and Fourier transform infrared sorption/desorption data on self-supporting clay films in a controlled-environment cell. This apparatus enables the masses of several sorbed species to be continuously monitored in situ. Its primary purpose is to characterize physisorption and chemisorption of arenes on clays. C1 UNIV FLORIDA,CIVIL ENGN LAB,GAINESVILLE,FL 32611. RP TIPTON, T (reprint author), USAF,CIVIL ENGN LAB,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403, USA. RI Johnston, Cliff/B-2215-2009 OI Trabue, Steven/0000-0002-4584-5790; Johnston, Cliff/0000-0002-8462-9724 NR 4 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD APR PY 1993 VL 64 IS 4 BP 1091 EP 1092 DI 10.1063/1.1144468 PG 2 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA KX401 UT WOS:A1993KX40100044 ER PT J AU TURNER, JW AF TURNER, JW TI MAINTAINING AIR SUPERIORITY SO TECHNOLOGY REVIEW LA English DT Letter RP TURNER, JW (reprint author), USAF,OFF SECRETARY,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MASS INST TECHNOL PI CAMBRIDGE PA CAMBRIDGE, MA 02139 SN 0040-1692 J9 TECHNOL REV JI Technol. Rev. PD APR PY 1993 VL 96 IS 3 BP 8 EP 9 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA KT081 UT WOS:A1993KT08100006 ER PT J AU SHARMA, SK SNYDER, CE GSCHWENDER, LJ AF SHARMA, SK SNYDER, CE GSCHWENDER, LJ TI TRIBOLOGICAL BEHAVIOR OF SOME CANDIDATE ADVANCED SPACE LUBRICANTS SO TRIBOLOGY TRANSACTIONS LA English DT Article DE LUBRICATION; SPACE LUBRICANTS; ELASTOHYDRODYNAMIC; TRACTION; SILAHYDROCARBON; POLYALPHAOLEFIN AB Performance of a variety of space lubricants was compared under boundary and elastohydrodynamic lubrication (EHL). The types of fluids studied were naphthenic mineral oil, paraffinic mineral oil, polyalphaolefin, and silahydrocarbon. The silahydrocarbon and the polyalphaolefin lubricants exhibited lower traction under similar conditions. A specific additive package increased the traction of the polyalphaolefin. Volatility characteristics of some of these fluids were also studied. RP SHARMA, SK (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 9 Z9 9 U1 0 U2 1 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 1993 VL 36 IS 2 BP 321 EP 325 DI 10.1080/10402009308983166 PG 5 WC Engineering, Mechanical SC Engineering GA KV020 UT WOS:A1993KV02000023 ER PT J AU LO, I MITCHEL, WC HARRIS, KA YANKA, RW MOHNKERN, LM REISINGER, AR MYERS, TH AF LO, I MITCHEL, WC HARRIS, KA YANKA, RW MOHNKERN, LM REISINGER, AR MYERS, TH TI WANNIER-STARK QUANTIZATION BY INTERNAL FIELD IN THE HGTE/CDTE SUPERLATTICE SO APPLIED PHYSICS LETTERS LA English DT Article ID HGTE-CDTE SUPERLATTICES; ELECTRIC-FIELD; LOCALIZATION AB The Stark ladder can be formed in a semiconductor superlattice by an applied electric field. The localization of electrons by an external electric field is known as Wannier-Stark quantization. We have performed the Shubnikov-de Haas measurements with a tilted magnetic field and the photoluminescence measurement on a HgTe/CdTe superlattice in the absence of an external electric field. From the observation of a two-dimensional electron gas and a blueshift of the photoluminescence spectrum, we conclude that the Stark ladder exists in the HgTe/CdTe superlattice and it is formed due to the Wannier-Stark quantization by the internal electrostatic field. C1 GE,ELECTR LAB,SYRACUSE,NY 13221. RP LO, I (reprint author), WRIGHT LAB,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. RI Myers, Thomas/C-3769-2013 NR 12 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 29 PY 1993 VL 62 IS 13 BP 1533 EP 1535 DI 10.1063/1.108631 PG 3 WC Physics, Applied SC Physics GA KU740 UT WOS:A1993KU74000031 ER PT J AU KROL, MF OHTSUKI, T KHITROVA, G BONCEK, RK MCGINNIS, BP GIBBS, HM PEYGHAMBARIAN, N AF KROL, MF OHTSUKI, T KHITROVA, G BONCEK, RK MCGINNIS, BP GIBBS, HM PEYGHAMBARIAN, N TI ALL-OPTICAL, HIGH CONTRAST GAALINAS MULTIPLE QUANTUM-WELL ASYMMETRIC REFLECTION MODULATOR AT 1.3 MU-M SO APPLIED PHYSICS LETTERS LA English DT Article ID FABRY-PEROT MODULATOR; GROWTH AB A high contrast, low intensity GaAlInAs/AlInAs multiple quantum well asymmetric Fabry-Perot reflection modulator for operation at 1.3 mum has been demonstrated. The reflection modulator takes advantage of the large absorptive and refractive nonlinearities associated with saturating the heavy-hole exciton resonance. We achieve an on/off contrast ratio in excess of 1000:1 (30 dB) and an insertion loss of 2.2 dB at a pump intensity of 30 kW/cm2, corresponding to a carrier density of 4.5 X 10(17) cm-3. The modulator was demonstrated to have a large operating bandwidth, achieving an on/off contrast ratio of greater than 100:1 over a 5 nm optical band. The operating speed of the modulator was measured and found to approach 1 GHz. C1 UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721. RP KROL, MF (reprint author), USAF,ROME LAB,CTR PHOTON,GRIFFISS AFB,NY 13441, USA. NR 15 TC 14 Z9 14 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 29 PY 1993 VL 62 IS 13 BP 1550 EP 1552 DI 10.1063/1.108637 PG 3 WC Physics, Applied SC Physics GA KU740 UT WOS:A1993KU74000037 ER PT J AU THIEM, TL GARDNER, JA DRESSLER, RA SALTER, RH MURAD, E AF THIEM, TL GARDNER, JA DRESSLER, RA SALTER, RH MURAD, E TI COMPARISON OF OPTICAL-EMISSION MASS-SPECTROSCOPY UTILIZING LASER VAPORIZATION FOR SOLID SAMPLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,PHILLIPS LAB,BEDFORD,MA 01731. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 20 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98100246 ER PT J AU GRESHAM, KD MCHUGH, CM BUNNING, TJ KLEI, HE SAMULSKI, ET CRANE, RL AF GRESHAM, KD MCHUGH, CM BUNNING, TJ KLEI, HE SAMULSKI, ET CRANE, RL TI PHASE-BEHAVIOR OF CYCLIC SILOXANE-BASED LIQUID-CRYSTALLINE COMPOUNDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,OH 45433. UNIV CONNECTICUT,DEPT CHEM ENGN,STORRS,CT 06269. UNIV N CAROLINA,DEPT CHEM,CHAPEL HILL,NC 27599. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 24 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300874 ER PT J AU SENNETT, B PACHTER, R COOPER, T CRANE, R ADAMS, W AF SENNETT, B PACHTER, R COOPER, T CRANE, R ADAMS, W TI MOLECULAR SIMULATION OF AN AMPHIPATHIC COILED COIL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 25 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300875 ER PT J AU COOLIDGE, MB LAUDERDALE, WJ PANDEY, R AF COOLIDGE, MB LAUDERDALE, WJ PANDEY, R TI DEVELOPING A FUNDAMENTAL UNDERSTANDING OF THE SOURCE OF FREQUENCY DOUBLING IN THIN-FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. MICHIGAN TECHNOL UNIV,DEPT PHYS,HOUGHTON,MI 49931. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 26 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300632 ER PT J AU COOPER, TM OBERMEIER, K CRANE, RL EPLING, R TOKARSKI, Z NATARAJAN, LV AF COOPER, TM OBERMEIER, K CRANE, RL EPLING, R TOKARSKI, Z NATARAJAN, LV TI 2ND HARMONIC-GENERATION IN CORONA-POLED THIN-FILMS OF SPIROPYRAN-MODIFIED SUCCINYLATED POLY(L-LYSINE) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,OH 45433. SCI APPLICAT INT CORP,DAYTON,OH 45432. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 26 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300876 ER PT J AU TOKARSKI, Z EPLING, B NATARAJAN, LV COOPER, TM GRINSTEAD, TM CRANE, RL ADAMS, WW AF TOKARSKI, Z EPLING, B NATARAJAN, LV COOPER, TM GRINSTEAD, TM CRANE, RL ADAMS, WW TI THE NONLINEAR OPTICAL-RESPONSE OF CORONA POLED POLY[(GAMMA-N-PENTYLAMINO-P-NITROBENZENE)-L-GLUTAMATEL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SCI APPLICAT INT CORP,DAYTON,OH 45431. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 27 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300877 ER PT J AU LAVINE, BK STINE, AB MAYFIELD, H AF LAVINE, BK STINE, AB MAYFIELD, H TI APPLICATION OF HIGH-RESOLUTION COMPUTER-GRAPHICS TO PATTERN-RECOGNITION ANALYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 AFESC,RDVC,TYNDALL AFB,TYNDALL,FL 32403. CLARKSON UNIV,DEPT CHEM,POTSDAM,NY 13699. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 33 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98101685 ER PT J AU YEATES, AT DUDIS, DS AF YEATES, AT DUDIS, DS TI A COMPACT BASIS SET FOR THE ABINITIO CALCULATION OF NONLINEAR OPTICAL COEFFICIENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 41 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98101693 ER PT J AU DAS, GP YEATES, AT DUDIS, DS AF DAS, GP YEATES, AT DUDIS, DS TI VIBRONIC CONTRIBUTION TO STATIC MOLECULAR POLARIZABILITIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 43 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98101695 ER PT J AU REARDON, KF SPAIN, JC AF REARDON, KF SPAIN, JC TI IMMOBILIZED CELL BIOREACTOR FOR 2,4-DINITROTOLUENE DEGRADATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 COLORADO STATE UNIV,DEPT AGR & CHEM ENGN,FT COLLINS,CO 80523. USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. RI Reardon, Kenneth/A-1952-2016 OI Reardon, Kenneth/0000-0002-7753-4049 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 86 EP BIOT PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98100415 ER PT J AU CIPOLLONE, MG WOLFE, NL HASSAN, S BURRIS, DR AF CIPOLLONE, MG WOLFE, NL HASSAN, S BURRIS, DR TI REDUCTION OF HALOGENATED HYDROCARBONS WITH IRON .1. KINETIC OBSERVATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US EPA,TAI,ATHENS,GA 30605. US EPA,ENVIRONM RES LAB,ATHENS,GA 30605. AIR FORCE CIVIL ENGN SUPPORT AGCY,RAVC,TYNDALL AFB,FL 32403. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 92 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98101805 ER PT J AU HASSAN, SM WOLFE, NL CIPOLLONE, MG BURRIS, DR AF HASSAN, SM WOLFE, NL CIPOLLONE, MG BURRIS, DR TI REDUCTION OF HALOGENATED HYDROCARBONS WITH IRON .2. MECHANISM OF THE REACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US EPA,TECHNOL APPLICAT INC,ATHENS,GA 30605. US EPA,ENVIRONM RES LAB,ATHENS,GA 30605. AIR FORCE CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 93 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98101806 ER PT J AU SONG, HH DOTRONG, M EVERS, RC AF SONG, HH DOTRONG, M EVERS, RC TI CHAIN EXTENSION AND INTER-CHAIN PACKING ORDER IN RIGID-ROD POLYMERS AS DETERMINED BY WAXD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45133. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 100 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98301440 ER PT J AU YEATES, AT AF YEATES, AT TI A COMPUTATIONAL INVESTIGATION OF THE NONLINEAR OPTICAL-PROPERTIES OF MATERIALS CONTAINING GROUP-III-V DATIVE BONDING BETWEEN CONJUGATED RINGS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 130 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300736 ER PT J AU DUDIS, DS YEATES, AT AF DUDIS, DS YEATES, AT TI SOLITON EVOLUTION IN LINEAR POLYENES - ABINITIO RESULTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WL MLBP,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 131 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300737 ER PT J AU COOLIDGE, MB LAUDERDALE, WJ AF COOLIDGE, MB LAUDERDALE, WJ TI NLO-SUBSTITUENT EFFECTS OF DISUBSTITUTED POLY-ACETYLENES AS PREDICTED BY MOPAC SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 132 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300738 ER PT J AU LAUDERDALE, WJ COOLIDGE, MB AF LAUDERDALE, WJ COOLIDGE, MB TI STATIC AND DYNAMIC HYPERPOLARIZABILITIES OF SOME SUBSTITUTED LINEAR DIACETYLENES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 133 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300739 ER PT J AU RAKOWSKY, MH KUHN, WK AF RAKOWSKY, MH KUHN, WK TI EPR CHARACTERIZATION OF DEFECT CENTERS IN ZNGEP2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 169 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300775 ER PT J AU CHENG, V WIERSCHKE, SG LAUDERDALE, WJ AF CHENG, V WIERSCHKE, SG LAUDERDALE, WJ TI CALCULATED INFRARED FREQUENCIES AND INTENSITIES FOR THE HO2 RADICAL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 185 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98300791 ER PT J AU HAALAND, PD JIANG, H AF HAALAND, PD JIANG, H TI POLYMERIC HETEROSTRUCTURES USING FLOWING AFTERGLOWS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP 192 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ983 UT WOS:A1993KQ98301042 ER PT J AU KILLPACK, MO RITTER, MM AF KILLPACK, MO RITTER, MM TI METALATION OF AROMATIC KETONES DIRECTED BY ALPHA-AMINO ALKOXIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 28 PY 1993 VL 205 BP A240 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA KQ981 UT WOS:A1993KQ98101096 ER PT J AU FLYNN, WJ CARLSON, DW AF FLYNN, WJ CARLSON, DW TI THE MICROSURGICAL SPONGE DIFFERENCE IN MITOMYCIN APPLICATION SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1993 VL 34 IS 4 BP 726 EP 726 PG 1 WC Ophthalmology SC Ophthalmology GA KT893 UT WOS:A1993KT89300108 ER PT J AU TOTH, CA CAIN, CP ROACH, WP STEIN, CD ALLEN, RG ELLIOTT, WR ZUCLICH, JA AF TOTH, CA CAIN, CP ROACH, WP STEIN, CD ALLEN, RG ELLIOTT, WR ZUCLICH, JA TI RETINAL EFFECTS OF ULTRASHORT LASER-PULSES SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. TASC,SAN ANTONIO,TX. USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235. RI toth, cynthia/F-5614-2011 NR 0 TC 2 Z9 2 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1993 VL 34 IS 4 BP 960 EP 960 PG 1 WC Ophthalmology SC Ophthalmology GA KT893 UT WOS:A1993KT89301267 ER PT J AU SCALES, DK OPREMCAK, EM GEORGE, DS MAY, M AF SCALES, DK OPREMCAK, EM GEORGE, DS MAY, M TI IMMUNOHISTOCHEMICAL LOCALIZATION OF 2 HEPARIN BINDING GROWTH-FACTORS IN SUBMACULAR NEOVASCULAR MEMBRANES SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. OHIO STATE UNIV,COLL MED,COLUMBUS,OH 43210. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1993 VL 34 IS 4 BP 1041 EP 1041 PG 1 WC Ophthalmology SC Ophthalmology GA KT893 UT WOS:A1993KT89301663 ER PT J AU BLUME, JL PREVIC, FH AF BLUME, JL PREVIC, FH TI VISUAL-SEARCH ASYMMETRIES IN 3-DIMENSIONAL SPACE SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 TEXAS TECH UNIV,LUBBOCK,TX 79409. ARMSTRONG LAB,BROOKS AFB,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1993 VL 34 IS 4 BP 1235 EP 1235 PG 1 WC Ophthalmology SC Ophthalmology GA KT893 UT WOS:A1993KT89302608 ER PT J AU KLOESS, PM STULTING, RD WARING, GO WILSON, LA AF KLOESS, PM STULTING, RD WARING, GO WILSON, LA TI BACTERIAL AND FUNGAL ENDOPHTHALMITIS FOLLOWING PENETRATING KERATOPLASTY SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USAF,LACKLAND AFB,TX 78236. EMORY UNIV,SCH MED,ATLANTA,GA 30322. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1993 VL 34 IS 4 BP 1495 EP 1495 PG 1 WC Ophthalmology SC Ophthalmology GA KT893 UT WOS:A1993KT89303928 ER PT J AU GLESSNER, JW DAVIS, SJ AF GLESSNER, JW DAVIS, SJ TI MULTILEVEL AMPLIFIED SPONTANEOUS EMISSION IN I(2) SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID LASER; TRANSITION AB We report the results of a study of amplified spontaneous emission (ASE) in the I2(B-->X) system. For many (v',v'') bands, several J'-->J'' transitions contribute to the ASE in a cooperative manner. We present spectroscopic and kinetic data that contrast this cooperative stimulated emission to the emission in previously reported optically pumped lasers. Transitions that involve several cooperatively emitting levels produce efficient conversion of the pump laser to near-infrared output. C1 PHYS SCI INC,ANDOVER,MA 01810. RP GLESSNER, JW (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 24 TC 13 Z9 13 U1 1 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 MAR 15 PY 1993 VL 73 IS 6 BP 2672 EP 2677 DI 10.1063/1.353063 PG 6 WC Physics, Applied SC Physics GA KT869 UT WOS:A1993KT86900008 ER PT J AU MANASREH, MO JOGAI, B STUTZ, CE REYNOLDS, DC AF MANASREH, MO JOGAI, B STUTZ, CE REYNOLDS, DC TI OPTICAL-ABSORPTION OF THE INTERSUBBAND TRANSITIONS IN GAAS/AL0.4GA0.6AS MULTIPLE QUANTUM-WELLS WITH SUPERLATTICE BARRIERS SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID EXCHANGE AB The optical absorption of intersubband transitions in n-type GaAs/Al0.4Ga0.6As multiple quantum wells with superlattice barriers is studied as a function of temperature. The room-temperature spectrum shows a strong intersubband transition at 118.64 meV (10.45 mum) and a shoulder at 137.00 meV (9.05 mum). A broad transition is also observed at 204.6 meV (6.06 mum). The 118.64 meV intersubband transition exhibits a blue shift (approximately 5.33 meV) as the temperature is decreased from 295 to 4.2 K. The intensity of this transition is increased dramatically while the intensity of the shoulder observed at 137.00 meV is reduced as the temperature is decreased. Theoretical calculations based on a self-consistent k.p model which include many-body effects of Hartree, exchange-correlation, depolarization, and vertex effects indicate that the 118.64 meV intersubband absorption is due to the electronic transition between the ground and excited states in the well. On the other hand, the shoulder seems to correspond to a transition between the ground state and the miniband formed in the superlattice barrier. C1 WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435. RP MANASREH, MO (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE WL ELRA,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 4 Z9 4 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 1993 VL 73 IS 6 BP 3105 EP 3107 DI 10.1063/1.352998 PG 3 WC Physics, Applied SC Physics GA KT869 UT WOS:A1993KT86900078 ER PT J AU DOTRONG, M MEHTA, R BALCHIN, GA TOMLINSON, RC SINSKY, M LEE, CYC EVERS, RC AF DOTRONG, M MEHTA, R BALCHIN, GA TOMLINSON, RC SINSKY, M LEE, CYC EVERS, RC TI SYNTHESIS, PROCESSING, AND 3RD-ORDER NONLINEAR OPTICAL-PROPERTIES OF BENZOBISTHIAZOLE POLYMERS CONTAINING THIOPHENE MOIETIES SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY LA English DT Article DE BENZOBISTHIAZOLE; NONLINEAR OPTICAL; THIOPHENE; DEGENERATE 4-WAVE MIXING; BITHIOPHENE; TERTHIOPHENE ID FIBERS; UNITS; ACID AB Benzobisthiazole polymers containing mono-, bi-, and terthiophene moieties were synthesized through polycondensation in polyphosphoric acid of 2,5-diamino-1,4-benzenedithiol dihydrochloride with thiophene-2,5-dicarboxylic acid, 2,2'-bithiophene-5,5'-dicarboxylic acid, and 2,2':5',2''-terthiophene-5,5''-dicarboxylic acid, or their corresponding diacid chlorides, respectively. Intrinsic viscosities of up to 8.1 dL/g (methanesulfonic acid, 30-degrees-C) were recorded. Polymer structures were verified by elemental analysis and spectroscopic comparison of the polymers with appropriate model compounds. Onset of breakdown under thermogravimetric analysis in air occurred in the 460-590-degrees-C range with the benzobisthiazole polymers containing a monothiophene linkage being the most stable. Films suitable for third-order optical susceptibility measurements could be prepared by extrusion techniques from the benzobisthiazole polymer containing a monothiophene linkage. Degenerate four wave mixing measurements on this film yielded a third order optical susceptibility chi(3) of approximately 4.5 X 10(-10) esu. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. ADTECH SYST RES INC,DAYTON,OH 45424. SYSTRAN CORP,DAYTON,OH 45432. OI Mehta, Rajeev/0000-0001-9953-3031 NR 15 TC 18 Z9 18 U1 0 U2 2 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0887-624X J9 J POLYM SCI POL CHEM JI J. Polym. Sci. Pol. Chem. PD MAR 15 PY 1993 VL 31 IS 3 BP 723 EP 729 DI 10.1002/pola.1993.080310317 PG 7 WC Polymer Science SC Polymer Science GA KL856 UT WOS:A1993KL85600017 ER PT J AU MERKEL, KG BRIGHT, VM SCHAUER, SN HUANG, CI ROBINSON, GD AF MERKEL, KG BRIGHT, VM SCHAUER, SN HUANG, CI ROBINSON, GD TI GEMOW REFRACTORY OHMIC CONTACTS TO N-TYPE GAAS WITH IN0.5GA0.5AS CAP LAYER SO ELECTRONICS LETTERS LA English DT Article DE SEMICONDUCTOR DEVIDES AND MATERIALS; INDIUM COMPOUNDS; OHMIC CONTACTS ID METAL AB GeMoW is presented as a refractory ohmic contact to n-type GaAs with an In0.5Ga0.5As cap layer. The contact exhibits ohmic behaviour over a wide annealing temperature range from 300 to 700-degrees-C. A minimum contact resistance of 0-176 OMEGA mm was obtained following furnace annealing at 500-degrees-C. C1 USA,ELECTR TECHNOL & DEV LAB,FT MONMOUTH,NJ 07703. WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP MERKEL, KG (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 2 Z9 2 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD MAR 4 PY 1993 VL 29 IS 5 BP 480 EP 481 DI 10.1049/el:19930321 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA LB767 UT WOS:A1993LB76700038 ER PT J AU TEDESCO, JW ROSS, CA KUENNEN, ST AF TEDESCO, JW ROSS, CA KUENNEN, ST TI EXPERIMENTAL AND NUMERICAL-ANALYSIS OF HIGH-STRAIN RATE SPLITTING TENSILE TESTS SO ACI MATERIALS JOURNAL LA English DT Article DE CONCRETES; CRACKING (FRACTURING); DYNAMIC LOADS; SPLITTING TENSILE STRENGTH; STRAINS; TENSILE STRENGTH AB Splitting tensile concrete specimens were tested at strain rates of 10(-7)/sec to 10(2)/sec in a low-speed material test machine and in a 50.8-mm (2-in.) diameter Split-Hopkinson Pressure Bar (SHPB). A comprehensive finite element method (FEM) analysis was conducted on the same test specimens. A high-speed framing camera (10,000 frames/sec) was used to record the gross deformation and cracking during the fracture process in the SHPB tests. In addition, an ultra-high-speed image converter camera with equivalent framing rates of 10,000 to 1,000,000 frames per sec was used to record some of the early crack formations during the fracture process in the SHPB tests. Results of tensile strength versus strain rate are presented and compared with compressive strength at similar strain rates. These same tensile data are compared with strength data obtained using a fracture mechanics model. Computer-generated crack patterns are presented and compared to experimentally observed crack patterns in the fracture of concrete al high strain rates. C1 UNIV FLORIDA,GAINESVILLE,FL 32611. AIR FORCE CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL. RP TEDESCO, JW (reprint author), AUBURN UNIV,AUBURN,AL 36849, USA. NR 23 TC 52 Z9 60 U1 0 U2 6 PU AMER CONCRETE INST PI FARMINGTON HILLS PA 38800 INTERNATIONAL WAY, COUNTRY CLUB DRIVE, PO BOX 9094, FARMINGTON HILLS, MI 48333-9094 SN 0889-325X J9 ACI MATER J JI ACI Mater. J. PD MAR-APR PY 1993 VL 90 IS 2 BP 162 EP 169 PG 8 WC Construction & Building Technology; Materials Science, Multidisciplinary SC Construction & Building Technology; Materials Science GA LC849 UT WOS:A1993LC84900008 ER PT J AU MIRACLE, DB AF MIRACLE, DB TI OVERVIEW NO-104 - THE PHYSICAL AND MECHANICAL-PROPERTIES OF NIA1 SO ACTA METALLURGICA ET MATERIALIA LA English DT Review ID TRANSITION-METAL ALUMINIDES; THERMOELASTIC MARTENSITIC-TRANSFORMATION; INTERMETALLIC MATRIX COMPOSITES; TEMPERATURE TENSILE DUCTILITY; GRAIN-BOUNDARY CHEMISTRY; PLASTIC-FLOW PROPERTIES; OXIDE SCALE ADHERENCE; 1050 DEGREES K; CR-AL ALLOYS; SINGLE-CRYSTALS AB A critical review of the physical and mechanical properties of NiAl is presented. The physical properties examined include electronic structure and bonding, crystal structure and phase stability, thermodynamic properties, elastic properties, and electrical, magnetic, and thermal properties. Discussion of crystal defects in NiAl include both constitutional and thermal point defects, the core structure and energy of line defects, and planar defects (shear faults, grain boundaries, and free surfaces). The mechanical properties, substructure, and mechanisms of ductility of NiAl single crystals and polycrystals are reviewed in detail, while alloying effects and the deformation of NiAl martensite are briefly described. The fracture toughness, modes of fracture, and cyclic properties reported in the literature are assessed. A critical analysis of diffusion data for NiAl is followed by a discussion of the activation energy and mechanisms of diffusion. This information is related to the creep properties of NiAl, and additional critical comments concerning the substructure and creep mechanisms of NiAl are provided. A review of the environmental resistance of NiAl is followed by a brief discussion of several current and potential applications of NiAl. Concluding remarks include suggestions for future research on NiAl. RP MIRACLE, DB (reprint author), USAF, WRIGHT LAB, MLLM, WRIGHT PATTERSON AFB, OH 45433 USA. RI Wagner, Martin/A-6880-2008 NR 333 TC 777 Z9 797 U1 9 U2 108 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD MAR PY 1993 VL 41 IS 3 BP 649 EP 684 DI 10.1016/0956-7151(93)90001-9 PG 36 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA KN933 UT WOS:A1993KN93300001 ER PT J AU HAVENER, G KIRBY, D AF HAVENER, G KIRBY, D TI AEROOPTICAL PHASE MEASUREMENTS USING FOURIER-TRANSFORM HOLOGRAPHIC-INTERFEROMETRY SO AIAA JOURNAL LA English DT Article; Proceedings Paper CT 30TH AIAA AEROSPACE SCIENCES MEETING CY JAN 06-09, 1992 CL RENO, NV SP AMER INST AERONAUT & ASTRONAUT ID FRINGE-PATTERN ANALYSIS; TRANSITION; ALGORITHM AB Arnold Engineering Development Center's current capability to determine optical phase from holographic interferograms using the Fourier transform method is described. Video images of interferograms are digitized into 0-255 grey level intensity arrays nominally 1000 pixels square. One-dimensional discrete Fourier transforms and digital filtering are used to compute the optical phase for each pixel which thereby generates high-resolution phase maps for the interferograms. The phase data are reduced according to the application. For serodynamic flowfields, density distributions for two-dimensional and axisymmetric flows are obtained and the current capability is applied to an interferogram of Mach 6 airflow over an axisymmetric sharp tip cone at zero angle of attack. For aero-optics testing, statistics such as one- and two-dimensional spatial correlations, integral scales, means, variances, and peak-to-valley rms values for the phase fluctuations are reducible as are calculations for performance parameters such as optical transfer and point spread functions, Strehl losses, and encircled energy diagrams. Current capability is demonstrated by application to interferograms of Mach 8 high Reynolds number airflow between parallel flat plates. RP HAVENER, G (reprint author), CALSPAN CORP,ARNOLD ENGN DEV CTR,ARNOLD AFB,TN 37389, USA. NR 26 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 0001-1452 J9 AIAA J JI AIAA J. PD MAR PY 1993 VL 31 IS 3 BP 426 EP 433 DI 10.2514/3.11347 PG 8 WC Engineering, Aerospace SC Engineering GA KU606 UT WOS:A1993KU60600003 ER PT J AU GUFFEY, SE CURRAN, JP AF GUFFEY, SE CURRAN, JP TI USE OF POWER BALANCE TO MODEL PRESSURES IN BILATERAL JUNCTIONS FOR CONVERGING FLOW VENTILATION SYSTEMS SO AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL LA English DT Article AB Little information is available on the nature of converging flow in bilateral junctions. Industrial Ventilation (American Conference of Governmental Industrial Hygienists) recommends against bilateral junctions without providing any justification. The American Society of Heating, Refrigerating and Air-Conditioning Engineers provides a table of coefficients for one type of bilateral junction, but it is of limited use in converging flow ventilation systems. The authors experimentally determined losses in one symmetrical bilateral junction designed to connect two 12.7 cm lateral ducts (both 45-degrees entries) and one 17.8 cm collinear duct to a 25.4 cm main duct. Velocity ratios of the converging ducts were varied from 0-3.7 to produce 35 test conditions. The linear kinetic power model provided a good fit to the empirical data. As expected, power losses were lowest when velocity ratios were near unity. Compared for practical conditions to two single lateral junctions in an optimum layout, the power losses in the bilateral junction tested were 0-51% higher-a maximum increase equivalent to about 1.25 relatively smooth elbows. Those costs may be acceptable when weighed against the convenience of bilateral junctions in system layouts. Furthermore, under conditions where bilateral junctions would be convenient to use, actual losses for single-lateral junctions may be higher than those for bilateral junctions. C1 USAF,DIV HEADQUARTERS ELECTR SYST,BEDFORD,MA 01731. RP GUFFEY, SE (reprint author), UNIV WASHINGTON,SCH PUBL HLTH & COMMUNITY MED,DEPT ENVIRONM HLTH,SC-34,SEATTLE,WA 98195, USA. NR 21 TC 3 Z9 3 U1 0 U2 0 PU AMER INDUSTRIAL HYGIENE ASSOC PI FAIRFAX PA 2700 PROSPERITY AVE #250, FAIRFAX, VA 22031-4307 SN 0002-8894 J9 AM IND HYG ASSOC J JI Am. Ind. Hyg. Assoc. J. PD MAR PY 1993 VL 54 IS 3 BP 102 EP 112 PG 11 WC Environmental Sciences; Public, Environmental & Occupational Health SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health GA KQ289 UT WOS:A1993KQ28900005 ER PT J AU LEOPOLD, JC TUNNESSEN, WW AF LEOPOLD, JC TUNNESSEN, WW TI PICTURE OF THE MONTH - PHYTOPHOTODERMATITIS SO AMERICAN JOURNAL OF DISEASES OF CHILDREN LA English DT Note C1 CHILDRENS HOSP PHILADELPHIA,34TH ST & CIV CTR BLVD,PHILADELPHIA,PA 19104. 67TH MED GRP TAC,BERGSTROM AFB,TX. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0002-922X J9 AM J DIS CHILD JI Am. J. Dis. Child. PD MAR PY 1993 VL 147 IS 3 BP 311 EP 312 PG 2 WC Pediatrics SC Pediatrics GA KQ561 UT WOS:A1993KQ56100019 PM 8438816 ER PT J AU CARRIER, DA MAWAD, ME KIRKPATRICK, JB AF CARRIER, DA MAWAD, ME KIRKPATRICK, JB TI MR APPEARANCE OF AN ORBITAL LEIOMYOMA SO AMERICAN JOURNAL OF NEURORADIOLOGY LA English DT Article DE ORBITS, NEOPLASMS; ORBITS, MAGNETIC RESONANCE AB The authors describe the MR appearance of an intraconal orbital vascular leiomyoma that probably arose from smooth muscle in the wall of a vein. Cavernous hemangiomas, schwannomas, neurofibromas, and other well-encapsulated masses can have a similar appearance. C1 WILFORD HALL USAF MED CTR,DEPT RADIOL,LACKLAND AFB,TX 78236. BAYLOR COLL MED,METHODIST HOSP,DEPT PATHOL,HOUSTON,TX 77030. RP CARRIER, DA (reprint author), BAYLOR COLL MED,METHODIST HOSP,DEPT RADIOL,6565 FANNIN,HOUSTON,TX 77030, USA. NR 10 TC 10 Z9 10 U1 0 U2 0 PU AMER SOC NEURORADIOLOGY PI OAK BROOK PA 2210 MIDWEST RD, OAK BROOK, IL 60521 SN 0195-6108 J9 AM J NEURORADIOL JI Am. J. Neuroradiol. PD MAR-APR PY 1993 VL 14 IS 2 BP 473 EP 474 PG 2 WC Clinical Neurology; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging GA KR570 UT WOS:A1993KR57000035 PM 8456731 ER PT J AU DOLAN, MJ WONG, MT REGNERY, RL JORGENSEN, JH GARCIA, M PETERS, J DREHNER, D AF DOLAN, MJ WONG, MT REGNERY, RL JORGENSEN, JH GARCIA, M PETERS, J DREHNER, D TI SYNDROME OF ROCHALIMAEA-HENSELAE ADENITIS SUGGESTING CAT SCRATCH DISEASE SO ANNALS OF INTERNAL MEDICINE LA English DT Article DE CAT-SCRATCH DISEASE; LYMPHADENITIS; ROCHALIMAEA-HENSELAE; AFIPIA-FELIS ID ACQUIRED IMMUNODEFICIENCY SYNDROME; BACILLARY ANGIOMATOSIS; PELIOSIS HEPATIS; TRENCH FEVER; AGENT; IDENTIFICATION; BACTEREMIA; INFECTION; ORGANISM; CULTURE AB Objective: To describe a clinical syndrome of cat scratch disease caused by Rochalimaea henselae, including methods for isolation of the organism from tissue and for identification. Design: Case series. Setting: U.S. Air Force referral hospital infectious diseases clinic. Patients: Two previously healthy patients. Main Measurements and Results: Two immunocompetent patients who had handled cats developed unilateral upper-extremity adenitis associated with a distal papular lesion and fever. The adenitis and distal lesions persisted and progressively worsened. Cultures of the involved lymph nodes from both patients grew R. henselae, a recently described organism associated with bacillary angiomatosis and peliosis hepatis in human immunodeficiency virus-infected patients and with bacteremia in immunocompromised and immunocompetent hosts. The organism was characterized as oxidase negative and X-factor dependent and had a characteristic pattern in analysis of whole-cell fatty acids differing from Afipia felis, a bacterium that has been associated with cat scratch disease. The identity of the isolate was confirmed by analysis of whole-cell fatty acids using gas chromatography and by amplification of the citrate synthetase gene sequence and analysis of the polymerase chain reaction-amplified product. The organisms were broadly susceptible to a variety of antimicrobials by broth microdilution; however in-vitro resistance to first-generation cephalosporins correlated with clinical failure of therapy. Conclusion: Rochalimaea henselae can be a cause of cat scratch disease in immunocompetent patients. C1 CTR DIS CONTROL,ATLANTA,GA 30333. UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. RP DOLAN, MJ (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236, USA. NR 37 TC 262 Z9 265 U1 0 U2 0 PU AMER COLL PHYSICIANS PI PHILADELPHIA PA INDEPENDENCE MALL WEST 6TH AND RACE ST, PHILADELPHIA, PA 19106-1572 SN 0003-4819 J9 ANN INTERN MED JI Ann. Intern. Med. PD MAR 1 PY 1993 VL 118 IS 5 BP 331 EP 336 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA KN688 UT WOS:A1993KN68800002 PM 8430978 ER PT J AU POTERACK, KA AF POTERACK, KA TI GENERAL-ANESTHESIA FOR CATARACT-SURGERY - EXPERIENCE AT KING-FAHD-HOSPITAL OF THE UNIVERSITY SO ANNALS OF SAUDI MEDICINE LA English DT Letter RP POTERACK, KA (reprint author), WILFORD HALL USAF MED CTR,NEUROANESTHESIA SERV,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU K FAISAL SPEC HOSP RES CENTRE PI RIYADH PA PUBLICATIONS OFFICE PO BOX 3354, RIYADH 11211, SAUDI ARABIA SN 0256-4947 J9 ANN SAUDI MED JI Ann. Saudi Med. PD MAR PY 1993 VL 13 IS 2 BP 203 EP 204 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA KZ656 UT WOS:A1993KZ65600020 PM 17588031 ER PT J AU REYNOLDS, DC YU, PW EVANS, KR STUTZ, CE LOEHR, J AF REYNOLDS, DC YU, PW EVANS, KR STUTZ, CE LOEHR, J TI MAGNETIC-FIELD DEPENDENCE OF SELECTIVE PAIR LUMINESCENCE IN GAAS SO APPLIED PHYSICS LETTERS LA English DT Article ID EXCITED-STATES; ACCEPTORS; SPECTROSCOPY; ZN AB The shift in the final state emission energy, resulting from selective pair luminescence in an applied magnetic field in GaAs, is very small. Any shift that is observed is toward lower energy. The relatively constant emission energy in the presence of an applied magnetic field is realized because the increase in band-gap energy, which would shift the emission toward higher energies, is offset by an increase in the donor binding energy which shifts the emission toward lower energies. The acceptor binding energy is essentially constant with applied field while the change in the Coulomb term, due to a change in the pair separation in a magnetic field, is quite small. As a result, the same acceptor excited states are identified in the presence of an applied magnetic field, as in zero field for the same pump energy. The results of this experiment are limited to applied fields less-than-or-equal-to 36 kG. C1 SOLID STATE ELECTR DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP REYNOLDS, DC (reprint author), WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435, USA. NR 15 TC 1 Z9 1 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 1 PY 1993 VL 62 IS 9 BP 964 EP 966 DI 10.1063/1.108534 PG 3 WC Physics, Applied SC Physics GA KN944 UT WOS:A1993KN94400020 ER PT J AU WALSH, JR AF WALSH, JR TI CHINA AND THE NEW GEOPOLITICS OF CENTRAL-ASIA SO ASIAN SURVEY LA English DT Article RP WALSH, JR (reprint author), USAF,COLL AIR WAR,MAXWELL AFB,AL, USA. NR 14 TC 9 Z9 9 U1 1 U2 1 PU UNIV CALIF PRESS PI BERKELEY PA JOURNALS DEPT 2120 BERKELEY WAY, BERKELEY, CA 94720 SN 0004-4687 J9 ASIAN SURV JI Asian Surv. PD MAR PY 1993 VL 33 IS 3 BP 272 EP 284 DI 10.1525/as.1993.33.3.00p0264y PG 13 WC Area Studies SC Area Studies GA LA289 UT WOS:A1993LA28900003 ER PT J AU CHELEN, W AHMED, N KABRISKY, M ROGERS, S AF CHELEN, W AHMED, N KABRISKY, M ROGERS, S TI COMPUTERIZED TASK BATTERY ASSESSMENT OF COGNITIVE AND PERFORMANCE EFFECTS OF ACUTE PHENYTOIN MOTION SICKNESS THERAPY SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID TRANSDERMAL SCOPOLAMINE; PSYCHOLOGICAL PERFORMANCE; PREVENTION AB Phenytoin was previously evaluated as an efficacious antimotion sickness therapy in more than 24 individuals. To be effective, this short-term, novel therapy requires serum levels in the anticonvulsant range; therefore, it became imperative that the effects of phenytoin upon cognition and performance be quantified. Each subject was tested on a performance battery (Criterion Task Set) on two occasions while on either phenytoin treatment or placebo for subsequent statistical comparison. We evaluated 23 subjects with phenytoin serum levels ranging from 8.9 to 23.9 mug/L. While subjects with the higher serum levels consistently reported subjective side effects, there was no statistically significant degradation of sensory, cognitive, or performance capabilities compared to placebo. C1 WRIGHT STATE UNIV,SCH MED,DAYTON,OH 45435. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. USAF,AEROSP MED RES LAB,WRIGHT PATTERSON AFB,OH 45433. NR 29 TC 3 Z9 3 U1 1 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAR PY 1993 VL 64 IS 3 BP 201 EP 205 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA KQ755 UT WOS:A1993KQ75500003 PM 8447800 ER PT J AU PREVIC, FH AF PREVIC, FH TI A NEUROPSYCHOLOGY OF SCHIZOPHRENIA WITHOUT VISION SO BEHAVIORAL AND BRAIN SCIENCES LA English DT Discussion ID HALLUCINATIONS; NOREPINEPHRINE; NORADRENALINE; DYSFUNCTION; MOVEMENT; SYMPTOMS; BRAIN RP PREVIC, FH (reprint author), ARMSTRONG LAB,DIV CREW TECHNOL,BROOKS AFB,TX 78235, USA. NR 47 TC 4 Z9 4 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0140-525X J9 BEHAV BRAIN SCI JI Behav. Brain Sci. PD MAR PY 1993 VL 16 IS 1 BP 207 EP 208 PG 2 WC Psychology, Biological; Behavioral Sciences; Neurosciences SC Psychology; Behavioral Sciences; Neurosciences & Neurology GA KU414 UT WOS:A1993KU41400102 ER PT J AU SNYDER, HW MITTELMAN, A ORAL, A MESSERSCHMIDT, GL HENRY, DH KOREC, S BERTRAM, JH GUTHRIE, TH CIAVARELLA, D WUEST, D PERKINS, W BALINT, JP COCHRAN, SK PEUGEOT, RL JONES, FR AF SNYDER, HW MITTELMAN, A ORAL, A MESSERSCHMIDT, GL HENRY, DH KOREC, S BERTRAM, JH GUTHRIE, TH CIAVARELLA, D WUEST, D PERKINS, W BALINT, JP COCHRAN, SK PEUGEOT, RL JONES, FR TI TREATMENT OF CANCER CHEMOTHERAPY-ASSOCIATED THROMBOTIC THROMBOCYTOPENIC PURPURA HEMOLYTIC UREMIC SYNDROME BY PROTEIN-A IMMUNOADSORPTION OF PLASMA SO CANCER LA English DT Article DE PROTEIN-A; STAPHYLOCOCCAL PROTEIN-A; IMMUNOADSORPTION; PROSORBA COLUMN; CHEMOTHERAPY-ASSOCIATED THROMBOTIC THROMBOCYTOPENIC PURPURA HEMOLYTIC UREMIC SYNDROME; C-TTP HUS; THROMBOTIC THROMBOCYTOPENIC PURPURA (TTP); HEMOLYTIC UREMIC SYNDROME (HUS); CIRCULATING IMMUNE COMPLEXES (CIC); EXTRACORPOREAL THERAPY ID MITOMYCIN-C; RENAL-FAILURE; PULMONARY-EDEMA; EXTRACORPOREAL IMMUNOADSORPTION; GASTRIC-CARCINOMA; ANEMIA; THERAPY; 5-FLUOROURACIL; MICROANGIOPATHY; ADENOCARCINOMA AB Background. Chemotherapy-associated thrombotic thrombocytopenic purpura/hemolytic uremic syndrome (C-TTP/HUS) is a condition involving thrombocytopenia, microangiopathic hemolytic anemia, and progressive renal dysfunction that develops in 2-10% of patients with a history of malignant neoplasms treated with certain chemotherapeutic agents. Pathogenesis of the disease may depend on the following: (1) generation of endothelial lesions in the kidney microvasculature, resulting from drug toxic effects and/or generation of small soluble circulating immune complexes (CIC), and (2) generation of autoantibodies and/or CIC that trigger aggregation and deposition of platelets around the lesions. Methods. Extracorporeal immunoadsorption treatment of plasma (PROSORBA columns, IMRE Corporation, Seattle, WA) to remove immunoglobulin G and CIC was evaluated in 55 patients for the potential to induce significant clinical benefits (increase in platelet count, decrease in hemolysis, stabilization of renal function) and longer survival. Results. Response to therapy was achieved in 25 of 55 patients examined. Response was associated with an estimated 1-year survival rate of 61%, as compared with an estimated survival rate of only 22% in those who did not respond (P = 0.0001). Patients whose malignant neoplasms were in complete or partial remission at the time of development of C-TTP/HUS had a significantly higher estimated 1-year survival rate (74%) as compared with a historic control group of patients receiving other treatments (22%, P = 0.0161). Clinical responses were correlated with normalization of serum levels of CIC and complement components C3c and C4. There were no side effects associated with 75% of treatments. Immunoadsorption therapy was associated with generally mild to moderate manageable side effects, such as fever, chills, nausea/vomiting, respiratory symptoms, pain, hypertension, and hypotension, which were reported in 25% of procedures. Conclusions. This multicenter study establishes protein A immunoadsorption as an effective and safe treatment for cancer chemotherapy-associated TTP/HUS, an otherwise fatal disease. C1 NEW YORK MED COLL,DEPT MED,DIV NEOPLAST DIS,VALHALLA,NY 10595. WESTCHESTER CTY MED CTR,VALHALLA,NY 10595. PITTSBURGH CANC INST,BLOOD SERV FDN,CENT BLOOD BANK,PITTSBURGH,PA. WILFORD HALL US AIR FORCE MED CTR,SAN ANTONIO,TX. GRAD HOSP PHILADELPHIA,PHILADELPHIA,PA 19146. GEORGETOWN UNIV,VINCENT T LOMBARDI CANC RES CTR,DEPT MED,DIV MED ONCOL,WASHINGTON,DC 20057. N IDAHO CANC CTR,COEUR DALENE,ID. MED COLL GEORGIA,HEMATOL ONCOL SECT,AUGUSTA,GA 30912. HUDSON VALLEY BLOOD CTR,VALHALLA,NY. RP SNYDER, HW (reprint author), IMRE CORP,401 QUEEN ANNE AVE N,SEATTLE,WA 98109, USA. NR 48 TC 83 Z9 84 U1 1 U2 1 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0008-543X J9 CANCER JI Cancer PD MAR 1 PY 1993 VL 71 IS 5 BP 1882 EP 1892 DI 10.1002/1097-0142(19930301)71:5<1882::AID-CNCR2820710527>3.0.CO;2-E PG 11 WC Oncology SC Oncology GA KP990 UT WOS:A1993KP99000026 PM 8448753 ER EF