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  • 1
    Electronic Resource
    Electronic Resource
    Spatial Transformation in the Vertical Vestibulocollic Reflex (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 656 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb25231.x
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  • 2
    Electronic Resource
    Electronic Resource
    Participation of Ia reciprocal inhibitory neurons in the spinal circuitry of the tonic neck reflex (1991)
    Springer
    Experimental brain research 84 (1991), S. 461-464 
    Details
    ISSN: 1432-1106
    Keywords: Tonic neck reflex ; Ia inhibitory neurons ; Neck receptors ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary As part of our studies of the spinal circuitry of the tonic neck reflex, we have recorded extracellularly from Ia reciprocal inhibitory neurons of the decerebrate, labyrinthectomized cat. The activity of a majority of neurons driven by stimulation of the quadriceps nerve was modulated by sinusoidal rotation of the neck; such modulation was much less frequent in the case of neurons driven by stimulation of nerves to more distal muscles. The results suggest that some of the inhibition which is part of the tonic neck reflex is mediated by Ia reciprocal inhibitory neurons, but that other pathways must also play an important role.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00231470
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  • 3
    Electronic Resource
    Electronic Resource
    Responses of neurons in the caudal medullary raphe nuclei of the cat to stimulation of the vestibular nerve (1992)
    Springer
    Experimental brain research 89 (1992), S. 323-332 
    Details
    ISSN: 1432-1106
    Keywords: Vestibular system ; Raphe nuclei ; Spinal cord ; Sympathetic nervous system ; Vestibulosympa ; thetic reflex ; Orthostatic hypotension ; Cardiovascular regulation ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the decerebrate cat, recordings were made from neurons in the caudal medullary raphe nuclei to determine if they responded to electrical stimulation of the vestibular nerve and thus might participate in vestibulo-sympathetic reflexes. Many of these cells projected to the upper thoracic spinal cord. The majority (20/28) of raphespinal neurons with conduction velocities between 1 and 4 m/s received vestibular inputs; 13 of the 20 were inhibited, and 7 were excited. Since many raphespinal neurons with similar slow conduction velocities are involved in the control of sympathetic outflow, as well as in other functions, these cells could potentially relay vestibular signals to sympathetic preganglionic neurons. The onset latency of the vestibular effects was long (median of 15 ms), indicating the inputs were polysynaptic. In addition, 34 of 42 raphespinal neurons with more rapid conduction velocities (6–78 m/s) also received long-latency (median of 10 ms) labyrinthine inputs; 26 were excited and 8 were inhibited. Although little is known about these rapidlyconducting cells, they do not appear to be involved in autonomic control, suggesting that the function of vestibular inputs to raphe neurons is not limited to production of vestibulosympathetic reflexes. One hypothesis is that raphe neurons are also involved in modulating the gain of vestibulocollic and vestibulospinal reflexes; this possibility remains to be tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228248
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal expansion of PEEK between 80 and 470K (1990)
    Springer
    Journal of materials science 9 (1990), S. 743-744 
    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/BF00721820
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  • 5
    Electronic Resource
    Electronic Resource
    Thermal conductivity measurements of some glass fibre- and carbon fibre-reinforced plastics (1990)
    Springer
    Journal of materials science 25 (1990), S. 3127-3132 
    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 Thermal conductivity experiments are reported on unidirectional composites over the temperature range −150 to 130 ° C. Results for R-glass/Fibredux 914 specimens, and for carbon fibre GY-80/Code 69 resin specimens, in directions parallel and perpendicular to the fibre directions have been interpreted using standard theories. Experiments were also made on specimens in which the carbon fibres made angles of 30 °, 45 ° and 60 ° to the temperature gradient. An attempt was made to understand these data using a finite difference model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587661
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  • 6
    Electronic Resource
    Electronic Resource
    Thermophysical properties of elastomers (1993)
    Springer
    Journal of materials science 28 (1993), S. 2815-2819 
    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 following account describes investigations of dimensional and stiffness characteristics of representative polyacrylic and silicone rubbers over the approximate temperature range 20 °C–175 °C. The results have led to a quantitative understanding of distinctive features in the behaviour of these elastomers, encountered during the course of their repeated use as tool materials in composite component manufacture, conforming with an explanation in terms of thermally induced cross-linking. It is concluded that silicone rubber offers more promise than polyacrylic rubber in applications where behavioural stability and a reasonable degree of control are required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00356224
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  • 7
    Electronic Resource
    Electronic Resource
    Moisture absorption by epoxy resins: The reverse thermal effect (1990)
    Springer
    Journal of materials science 25 (1990), S. 3577-3582 
    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 Experiments are reported on the variations in moisture absorption properties of an epoxy resin produced by sudden changes in temperature. Where the temperature change occurred when only a little water had been absorbed, the change in moisture absorption was determined by the change in diffusivity. Where a temperature change occurred when near saturation, a reverse thermal effect was observed. An attempt has been made to understand the results in terms of thermodynamics. Results obtained for the swelling changes accompanying sudden changes in moisture content suggest that it is the more tightly bound water in the polymer which takes part in the reverse thermal effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00575392
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  • 8
    Electronic Resource
    Electronic Resource
    Thermal properties of carbon-filled silicone rubbers for use in thermal expansion moulding (1990)
    Springer
    Journal of materials science 25 (1990), S. 721-724 
    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 pressure produced by the thermal expansion of silicone rubber on heating when enclosed in a steel mould can be used to fabricate complex shaped reinforced plastic components. To improve the thermal conductivity of the rubber, the effects have been studied of adding between 25% and 30% by volume of carbon, both as chopped carbon fibre and carbon black. Measurements have been made of the thermal conductivity between 30° and 170° C, and of the thermal expansion between 23° and 140° C. It was found that the chopped fibres were more efficient than the carbon black in increasing the thermal conductivity, giving approximately 100% increase in conductivity over that of the pure rubber for a 30% loading. The addition of carbon led to a decrease in the thermal expansion of the rubber by an order of 30%. The bulk modulus of the rubber was found to increase slightly, by less than 10%, when the carbon was added.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00714100
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of temperature and hydrostatic pressure on moisture absorption in polymer resins (1991)
    Springer
    Journal of materials science 26 (1991), S. 49-55 
    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 Polyester resins are widely used as the matrix in glass fibre-reinforced polymer composites. Moisture absorption has an adverse effect on their mechanical properties. Examination of two cured unsaturated polymers, Stypol R1067/32 and R1067/26, at various temperatures and hydrostatic pressures has shown that the saturation level of moisture in R1067/26 is independent of both temperature and pressure, but in R1067/32 at 5 °C the level depended on pressure. The temperature dependences of the diffusivities were found to be well described by Arrhenius expressions. The diffusivities were found to decrease slightly with increasing pressure, the effect being largest at the highest temperature, in qualitative agreement with theories based on changes in the free volumes in the polymers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00576031
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  • 10
    Electronic Resource
    Electronic Resource
    Absorption of silicone fluid in a silicone elastomer (1991)
    Springer
    Journal of materials science 26 (1991), S. 6-10 
    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 Measurements have been made of the absorption properties of a silicone fluid in a silicone elastomer, Aircast 3700, at temperatures between 0 and 150 °C. It was found that the diffusivity could be described by Arrhenius' law. The saturation fluid content was 20% at 0 °C, decreasing to 17% at 120 °C. The swelling was large, up to 26% at saturation, and approximately equalled the volume of fluid absorbed. A “reverse thermal effect” was observed and an attempt has been made to explain it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00576024
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