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  • 1995-1999  (7)
  • 1985-1989  (9)
  • 1
    Electronic Resource
    Electronic Resource
    Rapid formation of the high-T c phase in (Bi,Pb)-Sr-Ca-Cu-O superconductor via the sol-gel method (1995)
    Springer
    Journal of materials science 30 (1995), S. 1827-1831 
    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 Bi-Pb-Sr-Ca-Cu-O powder was synthesized by the oxalate gel method. A sample with the composition of Bi1.7Pb0.4Sr1.6Ca2.4Cu3.6Oy was used in this study. After pyrolysis of the gel precursor at 500 °C for 5 h, the resulting powder was calcined at 850 °C for another 5 h. The black powder was pressed into pellets and sintered at 852 °C for 5 h. The high-T c phase was formed more easily in the sample with excess calcium and copper than in the theoretical composition. (Bi,Pb)2Sr2Ca2Cu3Oy (above 90%) was prepared as above within a relatively short time. Characterization of (Bi,Pb)2Sr2Ca2Cu3Oy superconductor by X-ray diffraction, scanning electron microscopy, electron probe microanalysis, resistivity measurement and magnetic measurement, is reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00351617
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  • 2
    Electronic Resource
    Electronic Resource
    Partial epitaxial growth of cobalt germanides on (111)Ge (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1588-1590 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Localized epitaxial Co5Ge7 and CoGe2 have been grown in cobalt thin films on (111)Ge in the solid phase epitaxy regime. The orientation relationships between epitaxial germanides and the substrates as well as the configuration of the interfacial dislocations were analyzed by transmission electron microscopy (TEM) in detail. Surface morphology was examined by scanning electron microscopy. The results obtained from Read camera glancing angle x-ray diffraction and Rutherford backscattering channeling analysis were found to corroborate with those from TEM examinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98563
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  • 3
    Electronic Resource
    Electronic Resource
    Limitation to Shockley–Read–Hall model due to direct photoionization of the defect states (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 2409-2415 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Restrictions on the standard Shockley–Read–Hall (SRH) model in the recombination processes due to direct photoionization of the trapping centers have been theoretically studied. We find that, for photon energies even slightly in excess of the energy gap (i.e., (h-dash-bar)ω≥Eg+0.01 eV) photoionization via defect states may normally be neglected in comparison with interband photogeneration, even in indirect semiconductors (e.g., n-type silicon doped with gold). For photon energies below Eg, the recombination expressions for SRH are found to be simply replaced by similar expressions with suitably defined effective values n@B|1 and p*1, which incorporate the photoionization of the trapping centers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342810
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  • 4
    Electronic Resource
    Electronic Resource
    Localized epitaxial growth of CrGe on (111) and (001) germanium (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 2821-2823 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial CrGe was grown locally on both (111) and (001) Ge by a solid-phase epitaxy scheme. Both plan-view and cross-sectional transmission electron microscopy were applied to determine the orientation relationships between epitaxial CrGe and germanium substrates, and to characterize the microstructural features of epitaxial regions and CrGe/Ge interfaces. The best CrGe epitaxy was obtained in (111) samples annealed first at 250 °C for 1 h followed by heat treatment at 600 °C for 1 h. Epitaxial regions as large as 20 μm in size were observed. CrGe was the first refractory germanide grown epitaxially on germanium. The quality of epitaxy is also unsurpassed by any metal germanide epitaxy achieved to date. The growth of a number of epitaxial germanides on germanium with regular atomic arrangements at the interfaces may facilitate the basic understanding of metal-semiconductor interactions as well as enhance the performance of various semiconductor-based devices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341592
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  • 5
    Electronic Resource
    Electronic Resource
    Interfacial reactions of platinum thin films on (111) and (001) germanium (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 1177-1181 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A combined plan-view and cross-sectional transmission electron microscope study has been carried out to investigate the interfacial reactions in platinum thin films on germanium. Pt2Ge, PtGe, Pt2Ge3, and PtGe2 were found to form at 160, 250, 350, and 400 °C, respectively. Definite orientation relationships were observed between those of Pt2Ge, PtGe, and PtGe2 and (111)Ge. No epitaxial growth of platinum germanides on (001)Ge was observed. The results were found to be partially different from those obtained in a previous investigation. The discrepancy is attributed to different substrate cleaning schemes prior to the metal film depositions in the two studies. It appears that the growth of platinum germanide epitaxy on (111)Ge is not directly correlated with the lattice matches at germanide/Ge interfaces at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341137
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  • 6
    Electronic Resource
    Electronic Resource
    SPECIES SUBSTITUTION OF RETAIL SNAPPER FILLETS (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food quality 18 (1995), S. 0 
    Details
    ISSN: 1745-4557
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: A total of 121 retail market snapper fillets were collected throughout Florida and tested for compliance with labeling regulations. Samples were identified as to species by isoelectric focusing techniques against 12 authentic snapper species. Of the 81 red snapper samples, 24 (30%) were confirmed as real red snapper (Lutjanus campechanus), while 57 (70%) were mislabeled. Most of the other snapper species were correctly labeled. The major substitute for red snapper was scarlet snapper (Lutjanus sanguineus), an imported red-skin Pacific snapper species. Nomenclature of fish sold in the market is confusing since the same species of fish is frequently sold by several different names.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4557.1995.tb00368.x
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  • 7
    Electronic Resource
    Electronic Resource
    Rapid CO2 Evolution Method for Determining Shelf Life of Refrigerated Catfish (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 63 (1998), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The feasibility of a CO2 evolution method using an IR analyzer to evaluate the shelf life of refrigerated (4deg;C) catfish was investigated. Aerobic plate count (APC), and isoelectric focusing (IEF) of samples were compared with the CO2 evolution rate (CER) determinations. The increase in CER (25.78 to 195.63 Lg−1h−1) for farm raised catfish stored from 0 to 10 days correlated highly with APCs (4.32 to 10.24 log CFU g−1). The IEF data also confirmed the APC and CER results. Catfish spoilage was evident after 6 days at 4°C. Direct measurement of CER is a rapid and effective method to determine the microbial quality of catfish.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1998.tb17896.x
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  • 8
    Electronic Resource
    Electronic Resource
    Oxidation of Ascorbic Acid in Copper-Catalyzed Sucrose Solutions (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 52 (1987), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effect of sucrose on the oxidation of ascorbic acid (A) in Cucatalyzed (1, 2.5, and 5 ppm) and noncatalyzed solutions was studied at 30°C in samples shaken at various speeds. In unbuffered solutions, all sucrose levels tested (10–40%) were protective of A without shaking; however, all sucrose levels tested were destructive of A at the highest speed of shaking. This observation was much more pronounced in Cu-catalyzed reactions. Sucrose enhanced the catalytic action of Cu on the oxidation of A. In 0.1M acetate-buffered sucrose solutions this destructive effect of sucrose was slightly diminished due to the Cu-complexing effect of the buffer salt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1987.tb14088.x
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  • 9
    Electronic Resource
    Electronic Resource
    Copper Activity in Sucrose Solutions (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 52 (1987), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Copper activity was measured by a cupric electrode in 0.1 M sodium acetate-acetic acid buffered (pH 3.2, 4.5, 6.0) and unbuffered sucrose solutions (10% w/v) using the standard addition technique (l–10 ppm of Cu++). In water, the measured copper concentration (activity) was linearly related to the added copper concentration with a slope of unity. The slope decreased in acetate buffer solutions as pH increased indicating that Cu++ was complexed with acetate and to a greater extent at higher pH. In the presence of sucrose, copper activity increased approximately 16% in all solutions. Results suggest that the bulking effect of sucrose and the decreased water activity in solutions produced increased copper activity in sucrose solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1987.tb06653.x
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  • 10
    Electronic Resource
    Electronic Resource
    Monoclonal Antibodies to Porcine Thermal-Stable Muscle Protein for Detection of Pork in Raw and Cooked Meats (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 63 (1998), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Four hybridoma cell lines secreting monoclonal antibodies (MAbs) specific to porcine thermal-stable muscle proteins (TSMPs) were developed. The MAbs reacted with three protein bands (20.5, 22 and 24 kD) from raw pork extract; the protein band (24 kD) which was also present in cooked pork was identified as porcine-specific TSMP. Epitope analysis indicated four MAbs recognized same or closely located antigenic sites on the pork TSMP. The developed MAb-based indirect enzyme-linked immunosorbent assay (ELISA) enabled the detection of pork in raw and cooked heterogeneous meat mixtures as low as 10 g/kg. The curvilinear relations of second-degree polynomial (r2 〉 0.995) between pork concentrations and ELISA responses enabled quantifying degree of adulteration of pork in meat products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1998.tb15709.x
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