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  • 1
    Book
    Book
    London u.a. :Academic Press,
    Title: Computer image processing and recognition
    Author: Hall, Ernest L.
    Publisher: London u.a. :Academic Press,
    Year of publication: 1979
    Pages: 584 S.
    Type of Medium: Book
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 2121-2123 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The thin strained superlattice (TSSL) concept is introduced as a means for extending the practical range of application for pseudomorphic Inx Ga1−x As on GaAs. Growth and characterization results are presented for pseudomorphic high electron mobility transistor structures with GaAs-In0.3 Ga0.7 As TSSL active layers grown by molecular beam epitaxy. The TSSLs are composed of three periods of GaAs(15 A(ring))- In0.3 Ga0.7 As(h2 ), where h2 ranges from 30 to 52 A(ring). Modulation doping of the TSSLs is provided by atomic planar-doped Al0.3 Ga0.7 As overlayers with 45 A(ring) undoped spacers. 77 K Hall effect and transmission electron microscopy reveal that relatively thick TSSLs can be grown with high electronic and structural quality, comparable to much thinner In0.3 Ga0.7 As single quantum wells. Results are compared with a model for critical layer thickness and discussed in light of in situ reflection high-energy electron diffraction measurements.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 5181-5183 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-resolution transmission electron micrographs, including high-resolution structure images, and x-ray powder diffraction patterns have been observed of oleic acid-coated colloidal particles of cobalt ferrite. Particles were prepared by grinding. Particle defect content, size distribution and aspect ratio, and crystallite size and lattice constant were determined. Particles are irregularly shaped of log normally distributed dimension peaking near 5 nm and with an average aspect ratio of 1.3. They appear to be single crystals with few volume defects. Their lattice constant (0.8393±0.0003 nm) is indistinguishable from that of the bulk material. This supports earlier assertions that the anomalous magnetic behavior of these particles originates at their surface or the ferrite-surfactant interface.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Oxidation of metals 26 (1986), S. 385-396 
    ISSN: 1573-4889
    Keywords: coatings ; oxidation ; rare earth addition ; dispersed oxides ; scale adhesion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Oxidation studies were conducted on plasma sprayed coatings of Ni-20Cr-12.5Al containing one of the following: 1% MgO, 1% La2O3, 1% Y2O3, and 0.8% Y. The alloy powders containing dispersed oxides were prepared by a variety of processes employing attrition and ball milling. The TEM characterization of the plasma sprayed deposits of Ni-20Cr-12.5Al-1Y2O3 indicated that the oxide particles ranged from almost pure aluminum oxide to various compounds of aluminum and yttrium oxide. In cyclic tests conducted at 1150 and 1225°C, the coating containing 1% Y2O3 appeared to provide the best oxidation resistance. The oxidation resistance appeared to be influenced by the size and distribution of the oxide particles.
    Type of Medium: Electronic Resource
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