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  • 1
    Electronic Resource
    Electronic Resource
    Modular manufacturing (1993)
    Springer
    Journal of intelligent manufacturing 4 (1993), S. 163-181 
    Details
    ISSN: 1572-8145
    Keywords: Module ; intelligent manufacturing system ; virtual factory ; task-oriented ; intelligent robot
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper discusses requirements to be satisfied by future manufacturing systems and proposes a new concept of modular manufacturing to integrate intelligent and complex machines. In large-scale systems such as manufacturing systems, modularization is indispensable for clarifying logical structure and assuring a high degree of ease of construction. The parts, products and manufacturing equipments as well as the design and operating activities themselves are all described in units called modules. A manufacturing system is constructed and operated by combining these in building-block style. The creation of this manufacturing system relies on construction and operating systems that enable design and simulation in the virtual world, and production and control in the real world, in a unified approach. Hardware modules and software modules are compiled flexibly and hierarchically to fulfil specified tasks. A system in which modular manufacturing as a concept of system integration is applied to manufacturing robots is called a modular robot system. The robots are embedded in manufacturing systems as the highest application of model-based robotics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00123909
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of additive amount on oxidation of Y2O3-Nd2O3-doped silicon nitride (1991)
    Springer
    Journal of materials science 10 (1991), S. 753-755 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00723269
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Threshold stress intensity for oxidative crack healing in sintered silicon nitride (1994)
    Springer
    Journal of materials science 13 (1994), S. 404-406 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00278010
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  • 4
    Electronic Resource
    Electronic Resource
    Thyroid hormone concentrations in the gonads of wild chum salmon during maturation (1994)
    Springer
    Fish physiology and biochemistry 13 (1994), S. 233-240 
    Details
    ISSN: 1573-5168
    Keywords: thyroid hormones in maturing gonads ; ovary ; testis ; thyroxin ; triiodothyronine ; teleost
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Changes in gonadal and plasma concentrations of thyroid hormones were examined at various stages of maturation in chum salmon (Oncorhynchus keta) caught in the Bering Sea and the Bay of Alaska. Plasma concentrations of thyroxine (T4) were less than 5 ng ml−1, and those of 3,5,3′-triiodo-L-thyroxine (T3) were less than 2 ng ml−1 I in both males and females, regardless of the degree of sexual maturity or the gonadosomatic index (GSI). There was no clear relationships between circulating thyroid hormone levels and tissue levels. The ovarian T4 concentrations were undetectable (less than 0.2 ng g−1) or less than 2 ng g−1 when GSI was lower than 1%, but increased thereafter and reached a plateau of 8–10 ng g−1 when GSI became 2%. The ovarian T3 concentrations were about 5 ng g−1 when GSI was 1%, increased to a maximum level (20 ng g−1) when GSI was about 2%, and decreased to a constant level of 10 ng g−1 thereafter. The T4 and T3 content in single oocyte increased proportionally to the oocyte volume, indicating a constant incorporation of the hormones into the oocyte. The T4 concentrations in the testis were 1 ng g−1 or less regardless of the GS1. On the other hand, the T3 concentrations were highest (15 ng g−1) when the GSI was less than 1%, decreased thereafter when spermatocytes appeared in the testis, and became about 5 ng g−1 I in testes containing spermatozoa, raising the possibility of a role for T3 during early gamete and/or gonad maturation of testes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00004361
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  • 5
    Electronic Resource
    Electronic Resource
    Spherical particle impact damage behaviour of a SiC fibre-reinforced chemical vapour infiltrated SiC composite (1991)
    Springer
    Journal of materials science 10 (1991), S. 689-692 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00722769
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  • 6
    Electronic Resource
    Electronic Resource
    Mechanical properties of air-annealed SiC-particle/Al2O3 composite (1992)
    Springer
    Journal of materials science 11 (1992), S. 695-697 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00728910
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  • 7
    Electronic Resource
    Electronic Resource
    Mechanical properties and microstructure in sintered and HIPed SiC particle/Si3N4 composites (1992)
    Springer
    Journal of materials science 27 (1992), S. 6017-6021 
    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 Pressureless sintered (PLS) and gas-pressure sintered (GPS) Si3N4, PLS and GPS SiC particle/Si3N4 composites, and PLS + HIP and GPS + HIP SiC particle/Si3N4 composites were produced. Investigation of their mechanical properties showed that PLS + HIP and GPS + HIP composites, containing SiC particles in the beta-silicon nitride grains, yield higher bending strength, although its fracture toughness remains at the same level. This is attributed to the fact that the added SiC particles inhibit excessive growth of beta-Si3N4 grains without changing the fracture behaviour. However, this investigation also found precipitation during the reaction between SiC and nitrogen in gas pressure sintering, resulting in a low Young's modulus and low density in the GPS composite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01133743
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  • 8
    Electronic Resource
    Electronic Resource
    Sol-gel electrolytes in lithium batteries (1994)
    Springer
    Journal of sol gel science and technology 2 (1994), S. 611-613 
    Details
    ISSN: 1573-4846
    Keywords: solid electrolytes ; lithium batteries ; Al2O3-SiO2-Li2O gels ; conductivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract This paper presents the results of the thermodynamic calculations of material compatibility along with the results of the experimental studies using lithium aluminosilicate gel electrolyte in lithium batteries. Initially, there were problems with gel monoliths and porous cathodes in the Li solid electrolyte batteries. Better results were obtained through the direct application of thin films of the lithium aluminosilicate gels to the surfaces of dense, sintered oxide cathodes. It was important to maintain extremely low moisture and oxygen levels in the dry glove box during the assembly and testing of the battery, especially when it came to achieving good contact between the sol-gel electrolyte and the lithium metal. Suggestions are given about procedures for further development of the sol-gel electrolyte batteries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00486319
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