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  • 1
    Electronic Resource
    Electronic Resource
    Intense and stable blue-light emission of Pb(ZrxTi1−x)O3 (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 1082-1084 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A single band of photoluminescence (PL) has been detected at room temperature from the Pb(ZrxTi1−x)O3 (x=0–1.0) surface. The intense and stable PL band covers 475±50 nm (or 2.67±0.25 eV) wavelengths and the corresponding photoexcitation (PE) band is in the range of 305±45 nm. It is found that changing the x value causes a negligible shift of the PL and PE peaks, and the light emission is subject to the Pb presence. The minimal lifetime of the excited photons was found to be 0.03 ms at x=0.5 and the maximum lifetime of 0.60 ms can be achieved by either decreasing or increasing the x values. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1394946
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  • 2
    Electronic Resource
    Electronic Resource
    The antecedents of service quality and product quality and their influences on bank reputation: evidence from the banking industry in China (2003)
    Bingley : Emerald
    Managing service quality 13 (2003), S. 72-83 
    Details
    ISSN: 0960-4529
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Although an increasing number of studies is being performed in the field of service management, less work is being done on an integrated framework of service quality and product quality, especially that supported with evidence from developing countries. As a result, little is known about the distinction between service quality and product quality, their respective antecedents, and their distinctive contributions to performance in service industries in the developing world. Generalization of related findings from developed countries is not necessarily appropriate. Unlike most related studies that are based on evidence from developed countries, focuses attention on the distinction between, and respective antecedents of, service quality and product quality in the Chinese context. Gives much emphasis to the importance of a positive bank reputation. The findings are based on structural equation models developed by AMOS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09604520310456726
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  • 3
    Electronic Resource
    Electronic Resource
    Consumer satisfaction index: new practice and findings (2003)
    Bradford : Emerald
    European journal of marketing 37 (2003), S. 872-909 
    Details
    ISSN: 0309-0566
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: This paper reports the development of the Hong Kong consumer satisfaction index (HKCSI) - a new type of consumer-oriented economic performance indicator representing the quality of products (commodities and services) sold in Hong Kong as evaluated by Hong Kong consumers - as well as the findings of HKCSI from 1998 to 2000, each year with more than 10,000 successful telephone interviews on about 60 products. According to Hong Kong's special economic structure, the HKCSI is constructed from a consumption point of view concentrating on products and the products' consumers, rather than from the popular production point of view focusing on firms and the firms' customers. Key features of HKCSI include: the direct introduction of consumer characteristics (such as age, education, and income) in model construction; the wide coverage of services, especially free services; and the adoption of a product weighting system based on consumer price index (CPI), not on gross domestic product (GDP). In this paper, a theoretical framework of consumer satisfaction is first presented after investigating the relevant literature, and then the large-scale consumer survey scheme adopted to collect the data and the structural equation modeling technique employed to estimate the indexes are discussed. New considerations in the HKCSI in such areas as model structure, indicator and questionnaire design, and product classification are elaborated upon. Next, the estimated results are analyzed focusing on the reliability and validity of the model, on the relationships among consumer satisfaction and its antecedents and consequences, and especially on the effects of consumer characteristics on consumer satisfaction and the implications of such effects for marketing practice. The results are generally consistent across different products, broadly acceptable and in agreement with previous findings, and are also relevant to Hong Kong's special situation. The paper concludes with a summary and some remarks on problems in the present study and future research directions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03090560310465189
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  • 4
    Electronic Resource
    Electronic Resource
    Reaction Sintering of an Aluminium-Based Ternary Intermetallic and its Properties (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 426-432 (Aug. 2003), p. 1855-1860 
    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/2011/0528/02/07/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.426-432.1855.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Ultrasonic through-transmission method of evaluating the modulus of elasticity of Al2O3–ZrO2 composite (1997)
    Springer
    Journal of materials science 32 (1997), S. 6633-6638 
    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 The elastic properties of Al2O3–ZrO2 composite were determined from ultrasonic velocity measurements, and were found to be dependent upon the amount of ZrO2 phase, the compacting pressure of the green ceramic and sintering time. The velocity in the Al2O3–ZrO2 composite increased to a maximum for about 3 wt% unstabilized ZrO2 dispersed in Al2O3. The velocity decreased monotonically thereafter. The increase in moduli, as shown by an increase in velocity, has been attributed to phase transformation of the unstabilized ZrO2 from tetragonal to a monoclinic phase, which presumably leads to a toughening and strengthening effect, and also due to the action of ZrO2 in stopping grain growth of Al2O3 during densification. The excessive shear strain, induced by the tetragonal→monoclinic transformation phase, with greater than 50 wt% ZrO2 content, caused microcracks to appear in the composite. This reduced the elastic moduli of the composite. It was found that the composition dependence of the elastic moduli lie outside the theoretical bound of Voigt and Reuss for the elastic moduli of two-phase materials, and that by increasing the compacting pressure, an improvement in the elastic moduli of the sintered composite occurred irrespective of ZrO2 content. The thermal expansion of the composites showed no appreciable change with addition of zirconia up to 5 wt% ZrO2. However, dimensional changes due to phase transformation particularly with high zirconia content have been established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018648319192
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  • 6
    Electronic Resource
    Electronic Resource
    The strength and fracture toughness of polycrystalline magnesium oxide containing metallic particles and fibres (1972)
    Springer
    Journal of materials science 7 (1972), S. 427-434 
    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 The transverse rupture strength of hot-pressed and annealed composites of magnesium oxide and dispersed metallic phases (nickel, iron, cobalt) increases with increasing volume fraction of metal and annealing temperature. The strengthening effect of the metal is attributed to an inhibition of grain growth while flaw healing occurs during the annealing of the composites. The strength of magnesium oxide hot-pressed with nickel fibres is not affected by the volume fraction of fibre or the annealing temperature, and is comparable to the strength of porous magnesia. However, the work of fracture, though insensitive to heat-treatment, increases by at least two orders of magnitude for a moderate volume fraction of randomly oriented fibres. Mechanisms of energy absorption during the fracture of composites containing weakly bonded, non-aligned fibres are discussed. They include the work done in plastically deforming the fibre as it is withdrawn from its socket. It is concluded that this mechanism may be of importance in composites containing very weakly bonded ductile fibres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403406
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  • 7
    Electronic Resource
    Electronic Resource
    The strength and fracture toughness of polycrystalline magnesium oxide containing metallic particles and fibres (1972)
    Springer
    Journal of materials science 7 (1972), S. 427-434 
    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 The transverse rupture strength of hot-pressed and annealed composites of magnesium oxide and dispersed metallic phases (nickel, iron, cobalt) increases with increasing volume fraction of metal and annealing temperature. The strengthening effect of the metal is attributed to an inhibition of grain growth while flaw healing occurs during the annealing of the composites. The strength of magnesium oxide hot-pressed with nickel fibres is not affected by the volume fraction of fibre or the annealing temperature, and is comparable to the strength of porous magnesia. However, the work of fracture, though insensitive to heat-treatment, increases by at least two orders of magnitude for a moderate volume fraction of randomly oriented fibres. Mechanisms of energy absorption during the fracture of composites containing weakly bonded, non-aligned fibres are discussed. They include the work done in plastically deforming the fibre as it is withdrawn from its socket. It is concluded that this mechanism may be of importance in composites containing very weakly bonded ductile fibres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553766
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  • 8
    Electronic Resource
    Electronic Resource
    Warning colouration in pseudocerotid flatworms (Platyhelminthes, Polycladida). A preliminary study (1998)
    Springer
    Hydrobiologia 383 (1998), S. 29-33 
    Details
    ISSN: 1573-5117
    Keywords: Polycladida ; Pseudocerotidae ; flatworm ; aposematic colouration ; predation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Many species of tropical and subtropical pseudocerotid flatworms are noted for their brilliant colour patterns and conspicuous behaviour and are suitable candidates for the investigation of aposematic colouration. This study gives the first experimental evidence of aposematic colouration in pseudocerotid flatworms. Coloured and uncoloured agar models of flatworms were used to determine whether a fish predator, the moon wrasse Thalassoma lunare, could learn to avoid colourful flatworms on the basis of their colour pattern. The results showed that uncoloured models were more significantly attacked than coloured models (1% significance) and that there was no significant difference between attacks made to live flatworms and their respective models. These results clearly indicate the operation of aposematism in brightly coloured flatworms and demonstrate the operation of mimicry as the agar models were essentially non-living mimics of the flatworms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003449226586
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  • 9
    Electronic Resource
    Electronic Resource
    Improvements in α-Fe2O3 ceramic sensors for reducing gases by addition of Sb2O3 (2000)
    Springer
    Journal of materials science 35 (2000), S. 1419-1425 
    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 The microstructure, electrical properties and gas-sensing characteristics of Sb-doped α-Fe2O3 were investigated. Powder precursors with Sb/Fe = 0–0.1 were prepared by chemical coprecipitation method. Sb-doped α-Fe2O3 powders were characterized by means of thermal gravimetric-differential thermal analysis (TG-DTA), X-ray diffraction (XRD), BET surface area and scanning electron microscope (SEM). It was found that the raw powders underwent crystallization into the corundum structure of α-Fe2O3 at a temperature which increased somewhat with increasing Sb content; a proper amount of Sb doping suppressed both crystallite growth and the formation of hard agglomerates. The doping of Sb2O3 decreased the sensor resistance by one order of magnitude and increased the sensitivities to some hydrocarbon gases markedly. The former can be attributed to the substitution of Sb5+ for Fe3+ sites in α-Fe2O3 generating more free electrons; the latter is closely related to Sb-doped samples accommodating a higher density of chemisorbed oxygen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004771216935
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  • 10
    Electronic Resource
    Electronic Resource
    The microstructure and fracture properties of MgO crystals containing a dispersed phase (1972)
    Springer
    Journal of materials science 7 (1972), S. 422-426 
    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 MgO crystals containing up to 40% by volume of magnesioferrite and up to 2% by volume of iron and nickel were produced by a diffusion technique followed by appropriate heat treatments. Magnesioferrite precipitate did not significantly change the effective surface energy of a crack as measured by the double cantilever beam technique. Iron and nickel precipitate was produced in the form of platelets lying on {100}MgO planes whose orientation relationships were [001]MgO ∥[001]Fe, [110]MgO ∥[100]Fe with a spread of +10°, approximately, and [001]MgO ∥[001]Ni, [010]MgO ∥[010]Ni with negligible spread. Despite the crystallographic orientation relationships, the metal-MgO interface appeared to be very weak; the reasons for this are discussed. The effect of the metal precipitate on crack propagation was to markedly increase the density of cleavage steps. For a volume fraction of precipitate of 0.02, this led to a small increase in the effective surface energy, on the order of 1 Jm−2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403405
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