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  • 1
    Electronic Resource
    Electronic Resource
    Superplasticity of Fine TiC and TiN Dispersed Ti-6Al-4V Alloy Composites (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 170-172 (Oct. 1994), p. 549-554 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/00/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.170-172.549.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Inactivation of T5 phage by cis-vaccenic acid, an antivirus substance from Rhodopseudomonas capsulata, and by unsaturated fatty acids and related alcohols (1991)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 77 (1991), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The antiviral extract from Rhodopseudomonas capsulata was purified and the predominant active component was defined as cis-vaccenic acid (C1- 8:1 Δ11) by gas-liquid chromatography and gas chromatography-mass spectrometry analyses. Antiviral activities of unsaturated fatty acids and related alcohols against T5 phage were also tested. Among them, linoelaidic acid, oleic acid, and petroselenyl alcohol inactivated 98%, 53%, 67% of T5 phage at the concentration of 50 μ g/ml, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1991.tb04314.x
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  • 3
    Electronic Resource
    Electronic Resource
    Immunomodulatory effects on rainbow trout, Oncorlynchus mykiss, injected with the extract of abalone, Haliotis discus hannai (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of applied ichthyology 7 (1991), S. 0 
    Details
    ISSN: 1439-0426
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Rainbow trout, Oncorhynchus mykiss, injected with a water fraction extracted from abalone, Haliotis discus hannai, showed enhanced phagocytosis. This enhanced activity reached its maximum level 5 days after injection. The natural killer cell activities and the chemiluminescence responses of kidney leukocytes in fish treated with this fraction were also significantly increased, compared to those in albumin-treated fish. Rainbow trout injected intraperitoneally with this fraction showed an increased resistance to Vibrio anguillarum.〈section xml:id="abs1-2"〉〈title type="main"〉Zusammenfassung Immunomodulationseffekte bei Regenbogenforellen, Oncorhynchus mykiss, nach Injektion von Aba-lone-Entrakt, Haliotis discus hannaiBei Regenbogenforellen, Oncorynchus mykiss, denen ein wäßriger Extrakt der Abalone, Haliotis discus hannai, injiziert wurde, konnte eine gesteigerte Phagocytoseaktivität beobachtet werden. Diese Aktivi-tätssteigerung erreichte 5 Tage nach Verabreichung der Injektion ihr Maximum. Die natürliche Aktivi-tat von Killer-Zellen und die Chemoluminizenz-Reaktion der Nieren-Leukozyten in den mit dem Extrakt behandelten Fischen waren gegenüber Tieren, denen Albumin injiziert wurde, signifikant erhoht. Regenbogenforellen, denen der Abalone-Extrakt intraperitoneal injiziert wurde, zeigten eine erhohte Resistenz gegen Vibrio anguillarum.〈section xml:id="abs1-3"〉〈title type="main"〉Résumé Effects immunomodulatoires chez la truite arc-en-ciel, Onchorhynchus mykiss, traitie par des injections d'extraits d'onneaux, Haliotis discus hannai La truite arc-en-ciel, Onchorhynchus mykiss, traitie par injection d'une fraction aqueuse extraite d'ormeaux, Haliotis discus hannai, a montré une augmentation du taux de phagocytose. Cette augmentation de I'activité a atteint son niveau maximal cinq jours aprés injection. Les activitts naturelles des cellules tueuses et les résonses chimioluminescentes des leucocytes du rein des poissons traitis par cette fraction ont aussi significativement augmentis, par rapport ä celle des poissons traitis par de l'albumine. Les truites arc-en-ciel uaities par des injections intrapiritoniales de cette fraction ont montré une résistance accrue äVibrio anguillarum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0426.1991.tb00594.x
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of GaAs surface stoichiometry on the interface state density of as-grown epitaxial ZnSe/epitaxial GaAs heterostructures (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 1272-1274 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial ZnSe/epitaxial GaAs interfaces have been formed by molecular beam expitaxy and evaluated by several techniques including capacitance-voltage measurements. In the study reported here, the GaAs surface stoichiometry was systematically varied prior to the nucleation of ZnSe. A dramatic reduction of interface state density occurred when the GaAs epilayer was made As deficient. The resulting interface state densities of as-grown structures are comparable to values obtained with (Al,Ga)As/GaAs interfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102534
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  • 5
    Electronic Resource
    Electronic Resource
    Changes in film structure and increase in coercivity for Co/Pd multilayered films with atmospheric annealing (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 334-338 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Co/Pd multilayered films exhibit large perpendicular magnetic anisotropy and have attracted attention as new materials for recording media and for other applications. The coercivity (Hc), however, is small in as-sputtered films. We have found that Hc increased markedly with the atmospheric annealing at 300 °C to 2 kOe, and studied the change in film structure and reason of the increase in Hc with the annealing. The rf magnetron sputtering method was employed in fabricating the films. Film structure changes were observed by x-ray diffraction, Auger electron spectroscopy, transmission electron microscopy, energy dispersive x-ray spectrography, and atomic force microscopy. The increase in Hc was observed only in the atmospheric annealing, and not in the vacuum-annealing. The internal structure of films after the atmospheric annealing at 300 °C consisted of columnar parts that had the multilayered structure that undertook vertical magnetization and column boundaries being surrounded by Co oxides. As a consequence, domain wall binding occurs in the segregated areas of the oxides in the column boundaries, thereby increasing Hc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353853
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  • 6
    Electronic Resource
    Electronic Resource
    Pressure tuning of strain in CdTe/InSb epilayer: A photoluminescence and photomodulated reflectivity study (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 4136-4144 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The heavy-hole and light-hole excitons of a CdTe epilayer, pseudomorphically grown on an InSb epilayer by molecular beam epitaxy, are studied with a diamond anvil cell as a function of applied hydrostatic pressure via photoluminescence (PL) and photomodulated reflectivity (PR) spectroscopies. They are compared with the excitonic features in the simultaneously measured PL spectra of a sample of bulk CdTe. Under applied pressure, the lattice mismatch-induced splitting between the light-hole and heavy-hole related transitions increases in a continuous and reversible manner because of the additional pressure-induced compression due to the difference in the compressibilities of CdTe and InSb. The unusually large strain sustained by the CdTe epilayer under pressure is discussed in the light of various models. The PR signal vanishes after the InSb epilayer goes through a structural phase transition at approximately 20 kbar, while the PL signal persists until it is irreversibly quenched by the CdTe epilayer undergoing a structural phase transition at approximately 30 kbar. For pressures between 20 and 30 kbar, the behavior of the CdTe epilayer is similar to that of the bulk sample; the strain appears to have been relaxed due to the structural phase transition which has taken place in InSb. Values of the first- and second-order pressure coefficients for bulk CdTe and for the CdTe epilayer as well as values of the hydrostatic and shear deformation potentials are obtained at 14 and 80 K and compared with previously quoted values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354415
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  • 7
    Electronic Resource
    Electronic Resource
    Enhancement of resistance to bacterial infection in rainbow trout, Oncorhynchus mykiss (Walbaum), by oral administration of bovine lactoferrin (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 16 (1993), S. 0 
    Details
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Abstract Bovine lactoferrin was evaluated for its ability to enhance resistance of rainbow trout, Oncorhynchus mykiss (Walbaum), to infection with Vibrio anguillarum. Oral administration of lactoferrin (100 mg kg−1) to fish daily for 3 days prior to an intraperitoneal challenge with V. anguillarum resulted in increased survival rates, and enhanced resistance against Streptococcus sp., although to a lesser extent. In lactoferrin-treated fish, an increase in phagocytic and chemiluminescent (CL) activities of pronephros cells against V. anguillarum was observed. The phagocytic and CL activities of cells against Streptococcus sp. were also significantly increased. However, no in vitro bactericidal activities of lactoferrin against V. anguillarum or Streptococcus sp. were observed. This suggests that the lactoferrin enhanced the resistance of the rainbow trout against bacterial infection through the activation of phagocytes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2761.1993.tb01253.x
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  • 8
    Electronic Resource
    Electronic Resource
    X-ray determination of the Debye temperature at high pressure using high-energy synchrotron radiation (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 2719-2722 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The volume dependence of the x-ray Debye temperature in aluminum at high pressure up to 6 GPa was measured with high-energy synchrotron radiation at the National Laboratory for High Energy Physics. High-pressure high-temperature diffraction experiments were carried out by use of a multianvil press system with the energy-dispersive diffraction method. The Debye temperature was determined from the integrated intensity ratio at different temperatures. In order to avoid the intrinsic anharmonic effects and the influence of the energy shift for the Bragg diffraction due to the thermal expansion, constant volume was maintained in a sample by controlling the pressure at elevated temperatures. The interpolated values of the Debye temperature and the Grüneisen parameter of the atmospheric volume were θD0 =367 K and γ0 =3.0, respectively. Excellent agreement was found upon comparison with the published results of conventional experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346446
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  • 9
    Electronic Resource
    Electronic Resource
    Extremely low non-alloyed specific contact resistance ρc (10−8 Ω cm2) to metalorganic molecular beam epitaxy grown super heavily C-doped (1021 cm−3) p++GaAs (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 8227-8232 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The specific contact resistance ρc of non-alloyed ohmic metals (Mo/Au and WSix) to p-type GaAs is evaluated by transmission line method (TLM) patterns for various doping concentrations from 8×1018 to 1021 cm−3. The obtained specific contact resistance ρc, less than 10−8 Ω cm2, to metalorganic molecular beam epitaxy grown C-doped ( 1021 cm−3) GaAs is the lowest reported value. From the application point of view for the emitter electrodes of PNp type (two-dimensional electron gas base) heterojunction bipolar transistors, the specific contact resistance of a refractory metal, or the sputter-deposited WSix (x=0.45), is also studied. By reducing the growth temperature of molecular beam epitaxy from 600 to 450 °C and enhancing the As4/Ga flux ratio to 15, a nondiffusive heavily Be doped (1020 cm−3) GaAs is obtained. The specific contact resistance of the WSix to this sample is less than 10−6 Ω cm2. The obtained specific contact resistance can be well explained by a simple modeling based on the tunneling transport of light holes. Secondary ion mass spectroscopy analysis of the depth profile under heat acceleration shows a small diffusion of dopants for Be doped (1020 cm−3) GaAs and C-doped (1021 cm−3) GaAs. In addition, the specific contact resistance ρcISO of the isoheterojunction (p+GaAs/p+AlxGa1−xAs) is also evaluated by TLM patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347427
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  • 10
    Electronic Resource
    Electronic Resource
    Thermally induced optical bistability in ZnSe epilayers grown by molecular-beam epitaxy (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 2532-2534 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: For the first time, ZnSe epitaxial layers grown by molecular-beam epitaxy are shown to exhibit large contrast, low power, and extremely long-term stable thermally induced absorptive optical bistability. It is observed over a wide temperature range between 169 K and RT, with a strongly variable loop width and a switch-back adjustable to be less than 50% of the respective switch-down value. Critical slowing down as well as switch-down times are studied in dependence of the excess over the switch-down intensity values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346475
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