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  • 1970-1974  (3)
Document type
Keywords
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Year
  • 1
    Electronic Resource
    Electronic Resource
    The facial nucleus of cat: Antidromic and synaptic activation and peripheral nerve representation (1972)
    Springer
    Experimental brain research 16 (1972), S. 161-183 
    Details
    ISSN: 1432-1106
    Keywords: Facial nucleus ; Topographical representation ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The facial nucleus (FN) of the cat was studied by electrophysiological method for (1) general characteristics of the FN neurons during antidromic activation, (2) topographical representation of the peripheral branches of the facial nerve and (3) synaptic activities induced in the FN neurons following peripheral facial nerve stimulation. Stimulation of either peripheral branches or the genu of the facial nerve produced negative field potential of 2–3 mV in the FN. The field potential had a latency of less than 1 msec, refractory period of 2–3 msec and a relatively short duration. During double shock testing of the antidromic field potentials, the test potentials were suppressed (after initial recovery from the refractory period) for a duration of up to 80–100 msec. Intracellular analysis revealed that antidromic firing of the FN neuron is composed of M, IS, SD spikes. The rise time of spike potentials ranged from 0.23 msec to 0.53 msec and fall time 0.73 msec to 4.7 msec. The duration of the spike after-hyperpolarization varied from 6 msec to 60 msec with latencies to peak of 1.5 msec to 14 msec. Double shock testing showed that the summation effect of the afterhyperpolarization was greater at shorter time intervals. The latencies of the spike potentials varied from 0.46 msec to 1.1 msec for peripheral nerve stimulation and 0.18 msec to 1 msec for genu stimulation. The conduction velocity of the facial nerve ranged from 25 m/sec to 75 m/sec. These results were compared with the known characteristics of other cranial and spinal motoneurons. Topographical representation of the peripheral branches of the facial nerve was that the PA was represented solely in the medial aspect, TZ mainly in the dorsal aspect of the intermediate portion and BL in the ventral aspect of the intermediate and mainly in the lateral aspect of the nucleus. Stimulation of peripheral facial nerve produced negative field potentials in the FN or induced EPSPs in the FN neurons with latencies of 4–7 msec. The synaptic inputs were found mainly in the medial aspect of the FN by PA stimulation. These synaptic inputs were discussed as being relayed through the trigeminal nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233995
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electron-donor-acceptor properties and the mode of action of some additives to oils (1971)
    Springer
    Chemistry and technology of fuels and oils 7 (1971), S. 435-438 
    Details
    ISSN: 1573-8310
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Conclusions 1. It has been shown that the polarity and electron-donor-acceptor properties of alkylsalicylate, sulfonate, and succinimide additives affect their detergent, stabilizing, and solubilizing actions. 2. The high polarity and weak polarizability of alkylsalicylate additives determine their activity on a Metal. interface, good detergency, and low stabilizing action, 3. The polarity and polarizability of sulfonate additives, which have an effect on the micelle formation process and on the properties of the micelles in the oil Volume, explain the solubilizing and stabilizing properties of these products and their low detergent action. 4. The least polar and most polarizable are the succinimide additives; this determines their high additivity in the oil Vol.ume and on the Metal. interface, as well as their low CMC, and is the cause of their high solubilizing and stabilizing action.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00716527
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Heat and mass transfer in a channel with surface mass addition: Application to phase change processes (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 588-594 
    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 heat and mass transfer processes in a binary mixture flowing in a parallel plate channel with mass addition at the bounding surfaces are investigated analytically. The rate of mass addition, the temperature, and the mass fraction are arbitrarily prescribed at each of the bounding walls. Similarity solutions are evaluated numerically to yield pressure gradient, Nusselt number, and Sherwood number results for a wide range of each of three governing parameters. It is found that increasingly strong surface mass addition markedly increases the magnitude of the axial pressure gradient. Mass addition decreases the Nusselt and Sherwood numbers at the channel wall at which the injection is strongest but may actually increase these moduli at the opposite wall. A generalizing analysis is performed to accommodate phase change processes as well as to accommodate the specification of plenum conditions rather than wall surface conditions. Application is made to the evaporation of liquid water by an air stream. It is shown that the rate of evaporation is augmented as the rate of air injection increases, but the extent of the augmentation is less than the causative increase in the air flow rate.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690160414
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    Paper (German National Licenses)
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