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  • 1
    Electronic Resource
    Electronic Resource
    Reproductive biology of the edible jellyfish Catostylus mosaicus (Rhizostomeae) (2000)
    Springer
    Marine biology 137 (2000), S. 791-799 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The reproductive biology of the jellyfish Catostylus mosaicus (Quoy and Gaimard 1824) (Scyphozoa: Rhizostomeae) was investigated in New South Wales, Australia. Medusae were gonochoristic. There was a 1:1 ratio of male and female medusae and there was no evidence of sexual dimorphism. Oocytes arose from the gastrodermis and maintained contact with the gastrodermis, via trophocytes, throughout gametogenesis. Spermatogenesis occurred within follicles that arose from invagination of the gastrodermis. Detailed sampling of gonads over a period of 3.25 yr in Botany Bay, and over 2.5 yr in Lake Illawarra, indicated that gametogenesis occurred almost continuously during the year. Oocytes were smaller, or were absent from the ovaries during 3 of the 4 winters sampled at Botany Bay and during all 3 winter periods sampled at Lake Illawarra. Comparisons were made with other locations, although these were sampled less frequently. When medusae were present at a location, similar trends were observed. The size at which medusae matured varied, but during non-winter periods and at two locations, all medusae exceeding 130 mm diam were considered mature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270000399
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  • 2
    Electronic Resource
    Electronic Resource
    Life history and settlement preferences of the edible jellyfish Catostylus mosaicus (Scyphozoa: Rhizostomeae) (2000)
    Springer
    Marine biology 136 (2000), S. 269-279 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The life history and settlement preferences of larvae of Catostylus mosaicus (Scyphozoa: Rhizostomeae) (Quoy and Gaimard, 1824) were investigated in New South Wales, Australia, over a 2 mo period beginning in November 1998. The life history consisted of an alternation between a sexual, medusoid stage and an asexual, polypoid stage, and was similar to that described for other rhizostomes. Planula larvae were brooded by the adults. Approximately 4 d after collection, larvae settled on a variety of substrata including wood, sandstone, shell, seagrass and glass, and metamorphosed into four-tentacled polyps. The number of tentacles increased and polyps strobilated when they had between 12 and 20 tentacles. Strobilation occurred within 15 d of settlement, but only polyps that settled on the concave surfaces of the shells strobilated. Both monodisk and polydisk strobilation was observed. Ephyrae were raised for one month and were observed developing oral arms. Polyps reproduced asexually via the formation of podocysts, by production of buds, and by partial fission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050685
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of deposition rate on the electrical properties of vacuum deposited silicon oxide capacitors
    Amsterdam : Elsevier
    Vacuum 17 (1967), S. 560 
    Details
    ISSN: 0042-207X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0042-207X(67)90006-1
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  • 4
    Electronic Resource
    Electronic Resource
    A robust low cost thick film system for the consumer market (1999)
    Springer
    Journal of materials science 10 (1999), S. 487-490 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper describes the fabrication and test of a new low cost thick film system using base metals. The resistor pastes were developed using non-precious metal oxides and contain molybdenum trioxide and other additives. The conductors are either silver or nickel. The dielectrics contain barium oxide, but, unlike ruthenium based resistors, on related dielectrics, there is very little difference in resistor behavior on alumina from that on the dielectrics investigated. Long term stability tests show that the new resistor family, while less stable than those based on ruthenium, is suitable for many low cost applications. Results suggest that high temperature ageing tends to minimize contact effects and that they are compatible with both silver and nickel terminations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008971900581
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  • 5
    Electronic Resource
    Electronic Resource
    The influence of materials properties on the design of MCM and microstrip structures (1999)
    Springer
    Journal of materials science 10 (1999), S. 519-524 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper examines the influence of the materials on the electrical properties of conductors for both high speed MCM structures and microstrip applications. Calculated figures for attenuation in microstrip lines are compared with published results. It is seen that the nature and physical structure as well as the geometrical shape of a conductor track all strongly influence the microwave performance. However, it is also clear that real materials have been developed for these applications which closely approach the behavior predicted for ideal conductors. It is proposed that microwave performance can be predicted by modelling the d.c. conductor materials and extrapolating to high frequencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008936320145
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  • 6
    Electronic Resource
    Electronic Resource
    Planar oxygen sensor Part I: Effect of crazing of a zirconia thick film on an alumina substrate (1999)
    Springer
    Journal of applied electrochemistry 29 (1999), S. 93-100 
    Details
    ISSN: 1572-8838
    Keywords: oxygen sensors ; thick film ; zirconia ; amperometric sensors ; cracks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Thick film amperometric oxygen sensors have been constructed using an ink prepared from a powder of yttria-stabilized cubic zirconia with 150nm particle size printed onto an alumina substrate. At a fixed temperature these sensors display characteristics typical of an amperometric sensor. However, the limiting current varies with operating temperature (T) according to a T−3.1 dependence. This indicates that the diffusion barrier (electrolyte) becomes more restrictive as the temperature is raised. Cracks in the zirconia film (detected by SEM) arise from the differential thermal expansion coefficient of the thick film and the substrate. Diffusion of oxygen to the cathode occurs through the cracks which open and close as the temperature is, respectively, lowered and raised. Measurements at total gas pressures in the range 1–1000mbar indicate that the mode of diffusion is of the Knudsen-type up to 120mbar then tending towards mainly a bulk- type at 1000mbar. Crack dimensions and their relation to the variation of limiting current and temperature dependence for the region of bulk diffusion are treated theoretically. A good correlation with theory is obtained using the results from the two sources, namely, crack dimensions at room temperature and sensor characteristics in the bulk diffusion regime. This provides evidence for the mechanism proposed to explain both the magnitude and sign of the observed temperature coefficient. The value determined by microscopy for the differential coefficient of thermal expansion between the thick film and the substrate (α) was 1.1×10−6K−1. Also, characteristics of the sensor in the bulk diffusion region give a value for α/θ2 of 0.70×10−6K−1, where θ is the tortuosity factor of the slots. Hence, θ=1.2. This value is in agreement with the value determined by microscopy within the bounds of experimental uncertainty.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003447325519
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  • 7
    Electronic Resource
    Electronic Resource
    Tensile fracture of doubly-convex cylindrical discs under diametral loading (1988)
    Springer
    Journal of materials science 23 (1988), S. 2723-2728 
    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 Doubly-convex cylindrical gypsum discs have been fractured under the action of two diametrically opposed in-plane forces. The disc diameter was constant throughout the test series. The ratio of cylinder length to diameter ranged from 0.06 to 0.30; the ratio of cylinder diameter to radius of curvature of the disk faces was varied from 0 to 1.43. The fracture loads obtained have been correlated with stress data obtained from the photoelastic analysis of Pitt et al. An empirical equation, valid for any brittle material, relating the tensile strength of the material to the fracture load and dimensions of a doubly-convex disc has also been developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00547442
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  • 8
    Electronic Resource
    Electronic Resource
    Rate of coalescence of the dispersed phase in a laboratory mixer settler unit: Part II. The analysis of coalescence in a continuous mixer settler system by a differential model (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 827-831 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690160522
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  • 9
    Electronic Resource
    Electronic Resource
    Rate of coalescence of the dispersed phase in a laboratory mixer settler unit: Part I (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 823-827 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The rate of coalescence of large swarms of drops of a dispersed phase in the settler of a stage, laboratory mixer settler has been studied in order to establish the parameters that determine the dimensions of settlers used in extraction processes and effluent treatment. Part I is devoted to a description of the apparatus, experimental technique, and presentation of experimental results. Part II describes the development of a mathematical model which has been employed to analyze the results and is submitted as the basis for the design of settlers.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690160521
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  • 10
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    Tensile fracture of doubly-convex cylindrical discs under diametral loading (1988)
    Springer
    Details
    Publication Date: 1988-08-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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