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  • 1
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    Role of the acylated amino terminus of recoverin in Ca(2+)-dependent membrane interaction (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-05
    Description: Recoverin, a calcium ion (Ca2+)-binding protein of vertebrate photoreceptors, binds to photoreceptor membranes when the Ca2+ concentration is greater than 1 micromolar. This interaction requires a fatty acyl residue covalently linked to the recoverin amino (NH2)-terminus. Removal of the acyl residue, either by proteolytic cleavage of the NH2-terminus or by production of nonacylated recoverin, prevented recoverin from binding to membranes. The acylated recoverin NH2-terminus could be cleaved by trypsin only when Ca2+ was bound to recoverin. These results suggest that the hydrophobic NH2-terminus is constrained in Ca(2+)-free recoverin and liberated by Ca2+ binding. The hydrophobic acyl moiety of recoverin may interact with the membrane only when recoverin binds Ca2+.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dizhoor, A M -- Chen, C K -- Olshevskaya, E -- Sinelnikova, V V -- Phillipov, P -- Hurley, J B -- EYO6641/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):829-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8430337" target="_blank"〉PubMed〈/a〉
    Keywords: 1,2-Dipalmitoylphosphatidylcholine ; Acylation ; Animals ; Antigens, Neoplasm/isolation & purification/*metabolism ; Calcium/*metabolism/pharmacology ; Calcium-Binding Proteins/isolation & purification/*metabolism ; Cattle ; Cell Membrane/metabolism ; Egtazic Acid/pharmacology ; Electrophoresis, Polyacrylamide Gel ; *Eye Proteins ; Hippocalcin ; Kinetics ; *Lipoproteins ; Liposomes ; Membrane Proteins/isolation & purification/*metabolism ; Molecular Weight ; Myristic Acid ; Myristic Acids/*metabolism ; *Nerve Tissue Proteins ; Peptide Fragments/isolation & purification ; Phosphatidylserines ; Protein Binding ; Recoverin ; Rod Cell Outer Segment/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Ion pairing of [Fe3(.mu.-H,.mu.-CO)(CO)10]- with H2NR2+ cations (1987)
    s.l. : American Chemical Society
    Organometallics 6 (1987), S. 868-872 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00147a029
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  • 3
    Electronic Resource
    Electronic Resource
    Molecular action of tricholin, a ribosome-inactivating protein isolated from Trichoderma viride (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Molecular microbiology 5 (1991), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: An extracellular protein was isolated from a species of soil-borne fungi (Trichoderma viride) and its amino acid composition has been determined. The protein is acidic with a molecular mass of 14 200 daltons and is given the trivial name tricholin. Tricholin is a potent inhibitor of cell-free protein synthesis. When rabbit reticulocyte lysate was incubated with tricholin at a concentration of 6.3 × 10−7 M, it completely abolished the capacity of the lysate to support protein synthesis. The inhibition appears to be due to its reaction to ribosomes, since it generates a specific cleavage product, an α-sarcin RNA fragment, from reticulocyte ribosomal RNA. This reaction to ribosomes mimics that of α-sarcin. The antibody of α-sarcin strongly cross-reacts with tricholin, while the antibody of tricholin shows a weak reaction with α-sarcin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.1991.tb01860.x
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  • 4
    Electronic Resource
    Electronic Resource
    Infrared absorption of Ir and IrSi thin films on Si substrates (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 310-312 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The infrared absorption of Ir and IrSi thin films on Si substrates has been determined by transmission and reflection measurements over the wavelength range 2.5–25 μm. Detailed analysis of the dependence of absorption at 4 μm on film thickness indicates that a thin boundary layer with lower absorption than Ir is present at the Ir/Si interface and that such a layer with lower absorption than IrSi is present at the IrSi/Si interface. The existence of the boundary layers has been confirmed by the detection of oxygen at the interfaces by Auger analysis. Absorption and Auger measurements give no evidence of boundary layer formation at Pt/Si or PtSi/Si interfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100995
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  • 5
    Electronic Resource
    Electronic Resource
    Zone-melting recrystallization with enhanced radiative heating for preparation of subboundary-free silicon-on-insulator thin films (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1238-1240 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new zone-melting-recrystallization (ZMR) configuration with enhanced radiative heating has been developed for preparing silicon-on-insulator (SOI) films. With this configuration, in which the sample is positioned above the movable heater with the SOI film facing downward, subboundary-free 0.5-μm-thick SOI films are obtained over a much wider range of experimental parameters than with the conventional ZMR configuration. The characterization of these films by defect etching, optical microscopy, and transmission electron microscopy shows that the principal defects are isolated threading dislocations with a density of ∼106 cm−2. It should be possible to improve the material quality still further by optimizing experimental conditions for the new configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102465
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  • 6
    Electronic Resource
    Electronic Resource
    Characterization and entrainment of subboundaries and defect trails in zone-melting-recrystallized Si films (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 1152-1160 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the morphology and crystallographic angular discontinuities of subboundaries and defect trails in zone-melting-recrystallized Si films. These subboundaries and defect trails, which originate at the interior corners of the faceted solidification front, are classified into seven types. Evidence is presented that in-plane stress due to temperature gradients plays a major role in causing such defects. Various schemes for entraining subboundaries and defect trails are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337360
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  • 7
    Electronic Resource
    Electronic Resource
    Selective tungsten silicide formation by ion-beam mixing and rapid thermal annealing (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 1890-1894 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Smooth layers of tungsten silicide have been formed on silicon substrates by deposition of a tungsten film, As+ ion implantation through the film to produce ion-beam mixing, and rapid thermal annealing. This process has been used to form tungsten silicide selectively in patterned openings etched in the SiO2 film on oxidized Si wafers, without lateral silicide growth. Rapid thermal annealing results in the activation of the As implanted in the Si substrate, without significant redistribution, to form shallow n+-p junctions with good electrical properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334421
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  • 8
    Electronic Resource
    Electronic Resource
    Hydrogen annealing of PtSi-Si Schottky barrier contacts (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 1111-1113 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Schottky barrier PtSi-Si diodes formed by ultrahigh vacuum deposition and annealing of 1-nm-thick Pt films on n- and p-type (100) Si substrates were characterized by current-voltage measurements at liquid-nitrogen temperature. The diodes exhibited nearly ideal characteristics, with barrier heights of 0.914 and 0.197 eV, respectively, for typical n- and p-type devices. Subsequent annealing in hydrogen increased the barrier height by 0.013 eV for the n-type devices and decreased it by the same amount for the p-type devices. Vacuum annealing of H2-annealed devices restored the barrier heights to approximately their initial values. These results can be attributed to the presence of Si interface defects that are passivated by hydrogen incorporation and subsequently reactivated by vacuum annealing to remove the hydrogen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103507
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  • 9
    Electronic Resource
    Electronic Resource
    The finite element solutions of laminar flow and combined convection of air in a staggered or an in-line tube-bank (1988)
    Springer
    Heat and mass transfer 23 (1988), S. 93-101 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Eine Methode der finiten Elemente wird zur Lösung der vollständigen Navier-Stokes- und der Energiegleichung für die Probleme der laminaren kombinierten Konvektion an drei isothermen geheizten horizontalen Zylindern in versetzter Rohranordnung sowie für vier isotherme geheizte horizontale Zylinder in fluchtender Anordnung verwendet. Die Veränderung der Wandschubspannung, des Druckes und der Nusselt-Zahl werden für die gesamte Zylinderoberfläche, einschließlich des Bereiches nach dem Ablösepunkt, bestimmt. Die Werte des gesamten Widerstandsbeiwertes aufgrund von Druck und Reibung, die durchschnittliche Nusselt-Zahl und die Diagramme des Geschwindigkeitsfeldes und der Isothermen werden ebenfalls aufgezeigt.
    Notes: Abstract A finite element method is used to solve the full Navier-Stokes and energy equations for the problems of laminar combined convection from three isothermal heat horizontal cylinders in staggered tube-bank and four isothermal heat horizontal cylinders in in-line tube-bank. The variations of surface shear stress, pressure and Nusselt number are obtained over the entire cylinder surface including the zone beyond the separation point. The predicted values of total, pressure and friction drag coefficients, average Nusselt number and the plots of velocity flow fields and isotherms are also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01637131
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  • 10
    Electronic Resource
    Electronic Resource
    Natural convection in a partitioned enclosure heated from below (1988)
    Springer
    Heat and mass transfer 22 (1988), S. 303-308 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Eine numerische dreidimensionale SplineMethode zur Berechnung der zweidimensionalen Naturkonvektion in einem von unten beheizten, unterteiltem Hohlraum wird vorgestellt. Der Wärmestrom und die Temperatur auf beiden Seiten der undurchlässigen Trennwand werden als konstant betrachtet. Mit Hilfe der SADI-Prozedur werden die beschreibenden Gleichungen gelöst. Über den Einfluß der Unterteilung und der Rayleigh-Zahl auf die Strömung des Fluids und das Temperaturfeld wird eine Parameter-Studie durchgeführt. Die Ergebnisse zeigen, daß die Anordnung der Unterteilung und die Rayleigh-Zahl einen entscheidenden Einfluß auf das Wärmeübertragungsverhalten haben.
    Notes: Abstract Cubic spline collection numerical method has been developed to determine two dimensional natural convection in a partitioned enclosure heated from below. The both sides of impermeable partition are considered to have continuity in heat flux and temperatures. The governing equations are solved with aid of the SADI procedure. Parametric studies of the effects of the partition and Rayleigh number on the fluid flow and temperature fields have been performed. Results show that the location of the partition and Rayleigh number have a significant influence on the flow and heat transfer characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01387885
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