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  • 1
    Electronic Resource
    Electronic Resource
    Output characteristics of a discharge-pumped F2 laser (157 nm) with an injection-seeded unstable resonator (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 2241-2246 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: To improve beam quality, an injection-seeded unstable resonator was applied to a discharge-pumped F2 laser, which is normally dominated by amplified spontaneous emission with a large beam divergence when using a normal stable cavity, due to the laser's extremely high gain (a small-signal gain-length product ∼29). The time-dependent injection-seeding efficiency was obtained for various injection timings by measuring a ratio of the output laser intensity with the same polarization as the seed laser. Correlation of the injection-seeding efficiency with the temporal evolution of the laser-beam divergence was also studied. Both the time-dependent beam divergence and the injection-seeding efficiency showed degradation at a later part of the laser pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354706
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  • 2
    Electronic Resource
    Electronic Resource
    Transient absorption and its influence on energy extraction in a discharge-pumped F2 laser (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 1304-1310 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Small-signal transient absorption of a discharge-pumped F2 laser (157.6 nm) medium was measured by using a Raman-shifted F2 laser (168.6 nm). The small-signal total absorption was obtained for 6 atm laser media at an excitation rate of ∼26 MW/cm3, where a small-signal net gain was independently measured to ∼35%/cm, as the sum of a transient absorption of ∼2.5%/cm and a stationary absorption of ∼0.5%/cm. In spite of the relatively large gain-to-loss ratio a significantly low maximum laser intensity of ∼2 MW/cm2, which gives zero extraction efficiency in the F2 laser medium, measured in heavily saturated F2 laser amplification experiments, suggests that the energy extraction is limited by additional absorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356408
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of stripe-direction dependence of threshold current density for AlGaInP laser diodes with CuPt-type natural superlattice in Ga0.5In0.5P active layer (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 737-739 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An anisotropy for threshold current densities for AlGaInP laser diodes with CuPt-type natural superlattice (NSL) in a Ga0.5In0.5P active layer, grown on a (001) GaAs substrate, was observed, for the first time. Threshold current densities (Jth) for laser diodes with stripes in the [1¯10] and [110] direction were 1.35 and 2.10 kA/cm2, respectively. The lasers with a weak NSL formation in the active layer showed a very small anisotropy in Jth. Stripe direction dependence of electroluminescence (EL) polarization properties were also observed for lasers with well-developed NSL. The anisotropies in Jth and EL polarization properties are attributed to the existence of the NSL in the active layer and the appearance asymmetry previously observed in the NSL.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107782
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  • 4
    Electronic Resource
    Electronic Resource
    Deposition of fluoropolymer thin films by vacuum-ultraviolet laser ablation (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 65 (1994), S. 1370-1372 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Crystalline thin films of polytetrafluoroethylene were deposited on Si(100) wafers by F2 laser (157 nm) ablation in 200 mTorr Ar gas atmosphere. X-ray photoemission spectra indicated that the composition of the deposited films was similar to the source material. The surface morphology of films deposited at room temperature contained numerous fibrous structures in size of 100–400 nm, but they were smoothed out at elevated wafer temperature of ∼370 K, while the crystalline feature was still maintained. The refractive index was ∼1.35 at 633 nm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.112055
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  • 5
    Electronic Resource
    Electronic Resource
    Trans-septal left atrial catheterisation (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 48 (1993), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A newly designed 4 FG double-lumen catheter with the second port located either 5 or 7 cm proximal to the tip was tested in five children undergoing open heart surgery. The catheter was inserted percutaneously and initially positioned in the superior vena cava, right atrium or inferior vena cava. During cardiopulmonary bypass, the tip of the catheter was repositioned manually in the left atrium across the interatrial septum. In all patients, left atrial pressure was monitored successfully while central venous pressure was monitored with the second port positioned in the superior vena cava. Removal of the catheter from the left atrium was easily performed and caused no problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1993.tb07015.x
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  • 6
    Electronic Resource
    Electronic Resource
    T-Cell-Dependent Production of IgG by Human Cord Blood B Cells in Reconstituted SCID Mice (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 35 (1992), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Reconstitution of severe combined immunodeficient (SCID) mice with human lymphocytes has recently allowed the elucidation of abnormalities of immune responses in various immunological disorders. In the present study, mononuclear cells (MNC) from neonatal cord blood and adult peripheral blood were intraperitoneally injected into SCID mice to examine induction of human Ig in respective mice recipients. Human IgG was consistently detected in the serum of SCID transferred with adult MNC, but only a few SCID recipients of cord blood MNC showed detectable but low levels of IgG in the serum. The combination experiments of isolated B and T cells disclosed that some interactions between B and T cells might be necessary for IgG production in transferred SCID mice. Notably, transfer of cord blood B cells with adult but not cord blood T cells resulted in efficient induction of IgG, associated with a change in subclass distribution. The results suggest that inability of neonatal B cells to produce IgG can be overcome by transfer with adult mature T cells into SCID mice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1992.tb02876.x
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis of Indolo phenothiazin-6-one derivatives (1993)
    Springer
    Monatshefte für Chemie 124 (1993), S. 319-321 
    Details
    ISSN: 1434-4475
    Keywords: 5H-Indolo[3,2,-a]-6H-phenothiazin-6-one, 1H-Indolo[2,3-a]-6H-phenothiazin-6-one
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung 5H-Indolo[3,2-a]-6H-phenothiazin-6-on und sein Regioisomer 1H-Indolo[2,3-a]-6H-phenothiazin-6-on wurden mittels Kondensation von 2-Aminobenzolthiol mit Carbazol-1,4-dion oder mit einer isomeren Mischung von Bromcarbazol-1,4-dionen hergestellt.
    Notes: Summary 5H-Indolo[3,2-a]-6H-phenothiazin-6-one and its regioisomer 1H-Indolo[2,3-a]-6H-phenothiazin-6-one were prepared by the condensation of 2-aminobenzenethiol with carbazole-1, 4-dione or with isomeric mixture of bromo-carbazole-1,4-diones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810589
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  • 8
    Electronic Resource
    Electronic Resource
    Identification of epitopes associated with different biological activities on the glycoprotein of vesicular stomatitis virus by use of monoclonal antibodies (1992)
    Springer
    Archives of virology 127 (1992), S. 153-168 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirteen monoclonal antibodies (MAbs) to the glycoprotein (G) of vesicular stomatitis virus (VSV) serotype Indiana were prepared and examined for their effects on various biological activities of VSV, including in vitro infection, hemagglutination, adsorption to cells, and mediation of cell fusion. Competitive binding assays with these MAbs revealed the presence of at least seven distinct antigenic determinants (epitopes) on the G protein. In some cases, overlappings among epitopes to various degrees were observed as partial inhibition or binding enhancement. The MAbs to all the epitopes but one (epitopes 1–6) reacted with the denatured G protein in a Western immunoblot analysis. Four of the epitopes (epitopes 2, 4, 5, and 7) were involved in neutralization and two (epitopes 1 and 2) in hemagglutination inhibition. None of the MAbs inhibited the adsorption of radiolabeled VSV to BHK-21 cells; the MAbs to epitope 2 slightly enhanced the virus adsorption. All neutralization epitopes except epitope 2 (epitopes 4, 5, and 7) were associated with inhibition of VSV-mediated cell fusion. These results show a direct spatial relationship between the epitopes recognized by the MAbs and functional sites on G protein and further insights into the structure and function of G protein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01309581
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  • 9
    Electronic Resource
    Electronic Resource
    Preparation of polycrystalline CuIn11S17 semiconductor with high crystallinity and its characterization (1990)
    Springer
    Journal of materials science 9 (1990), S. 1448-1452 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00721612
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  • 10
    Electronic Resource
    Electronic Resource
    Mechanism for CdS electrodeposition from fused salt (1990)
    Springer
    Journal of materials science 25 (1990), S. 472-476 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Electrodeposition of CdS on a graphite substrate from LiCl-KCl eutectic melt containing CdCl2 and Na2SO3 has been examined. It has been found that the cathodic deposition of CdS onto a graphite substrate occurs in competition with the formation of CdS particles by homogeneous precipitation in the bath. We have proposed as a deposition mechanism that the underpotential deposition of cadmium occurs under the influence of some sulphur species. We have also found that crystals of solid solution of CdS-CdSe are electrodeposited by adding selenium powder in the bath.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00714058
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