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  • 1
    Electronic Resource
    Electronic Resource
    Diamine oxidases in the small intestine of rabbits, dogs and pigs: Separation from soluble monoamine oxidases and substrate specificity of the enzymes (1975)
    Springer
    Inflammation research 5 (1975), S. 440-441 
    Details
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Conclusion The high potency of the small intestine to inactivate vasoactive biogenic amines is a combined effect of diamine and monoamine oxidase activity. Histamine, however, is specifically deaminated by diamine oxidase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01972662
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  • 2
    Electronic Resource
    Electronic Resource
    Recurrent inhibition of individual Ia inhibitory interneurones and disinhibition of their target α-motoneurones during muscle stretches (1975)
    Springer
    Experimental brain research 23 (1975), S. 13-28 
    Details
    ISSN: 1432-1106
    Keywords: Ramp-and-hold stretches ; Ia inhibitory interneurones ; Renshaw cells ; Reciprocal inhibition ; Recurrent facilitation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of ramp stretches applied to triceps surae muscle on the discharge patterns of single Ia inhibitory interneurones, monosynaptically invaded from various nerves, were studied in either decerebrate or anesthetized cats. Interneurones which received direct excitatory Ia input from the stretched muscle exhibited augmented activity both during the dynamic and static phase of stretch, which was, however, interrupted by a transient inhibitory influence during the dynamic phase of stretch. The influences on Ia inhibitory interneurones, monosynaptically invaded from hamstring or tibial nerve, were exclusively inhibitory. These stretch-induced inhibitions were better demonstrable in decerebrate than in anesthetized preparations. The timing of the discharge patterns of additionally recorded Renshaw cells during stretch, and the disappearance or reduction of the above described inhibitory effects after administration of DHE, strongly support the idea that these inhibitory actions are caused by Renshaw inhibition. In Ia inhibitory interneurones, monosynaptically activated from the antagonistic peroneal nerve, stretch induced also pronounced inhibitory effects, which were most probably caused by mutual inhibition between Ia inhibitory interneurones. The suppression of agonistic Ia inhibitory interneurone activity below the tonic resting activity corresponded to an enhancement of the monosynaptic reflex amplitude of the antagonistic motoneurone pool. The findings suggest that normal orthodromic activation of Renshaw cells, and consequently the recurrent inhibition of the Ia inhibitory interneurones, is predominantly linked with rapid phasic, rather than slow tonic, motoneuronal firing. The functional role of this mechanism for the performance of rapidly alternating movements and the damping of ballistic agonist contractions is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238726
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  • 3
    Electronic Resource
    Electronic Resource
    Independent biaxial reorganization of the retinotectal projection: A reassessment (1978)
    Springer
    Experimental brain research 31 (1978), S. 155-162 
    Details
    ISSN: 1432-1106
    Keywords: Goldfish ; Retinotectal reorganization ; Competitive innervation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary It has been previously suggested that the retinotectal projection can reorganize independently along two orthogonal tectal axes. This possibility was reexamined by removing roughly a quarter of the retina and slightly less than a quarter of the tectum. In the tectal case, the unseated fibers arborized rostral to the ablation, but not lateral to it, and the projection shifted irrespective of tectal axes to maintain topographic order and a roughly uniform representation of retinal areas. In the retinal case, expansion into the denervated quadrant was only from the rostral, never from the medial or lateral directions. Analysis of the movements of fiber arbors shows that they respond to local competition for tectal space rather than following tectal axes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237596
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  • 4
    Electronic Resource
    Electronic Resource
    Tetanus toxin induced actions on spinal Renshaw cells and Ia-inhibitory interneurones during development of local tetanus in the cat (1977)
    Springer
    Experimental brain research 27 (1977), S. 271-286 
    Details
    ISSN: 1432-1106
    Keywords: Local tetanus ; Spinal interneurones ; Spinal inhibitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In anaesthetized cats the activities of Renshaw cells (RCs) and Ia-inhibitory interneurones (IaINs) were recorded during the accumulation of tetanus toxin in the spinal cord following injection into the gastrocnemius muscle. The early response of the RCs increased during the period of development of local tetanus. With some cells there was a subsequent decrease in the early response in later periods of the observation time (16–44 hrs after intramuscular injection). The effects on the spontaneous activity of the RCs were in good correspondence to those on the early response. The hyperactivity of the RCs is proposed to be mediated mainly via disinhibited cholinergic gamma-motoneurones using muscarinic postsynaptic receptors. The “pause” which follows the early response and the recurrent inhibition of IaINs was not reduced during the development of local tetanus. These results indicate that the central action of tetanus toxin in local tetanus does not consist of a general loss of postsynaptic inhibition. It is suggested that tetanus toxin acts mainly on synaptic elements of the alpha- and gamma-motoneurones or on presynaptic nerve terminals in their vicinity. In later periods a disturbing influence on the cholinergic transmission at Renshaw cells seems to occur.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235503
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  • 5
    Electronic Resource
    Electronic Resource
    DISCUSSION OF the Field Report, “Recharge of Wells from Spoil Banks???” by Joseph R. J. Studlick, May-June 1978 issue, v. 16, no. 3, pp. 204–205 (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 16 (1978), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1978.tb03238.x
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  • 6
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    THE POETRY OF MENG CHIAO AND HAN YÜ, by Stephen Owen (Book Review) (1977)
    Honolulu, etc. : Periodicals Archive Online (PAO)
    Pacific Affairs. 50:2 (1977:Summer) 302 
    Details
    ISSN: 0030-851X
    Topics: Political Science , Sociology , Economics
    Notes: Book Reviews
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5082-1977-050-02-000024
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  • 7
    Electronic Resource
    Electronic Resource
    Konvergenz von quadratischen Interpolations- und Flächenabgleichssplines (1978)
    Springer
    Computing 19 (1978), S. 351-363 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Abstract The purpose of this paper is to show that for continuous functions the related quadratic splines converge without any assumption on the spline grid. The points of the interpolatory grid can be chosen between the corresponding points of the spline grid with a division ratio from $$\frac{{\sqrt 2 }}{2}$$ to $$1 - \frac{{\sqrt 2 }}{2}$$ . In the case of continuously differentiable functions the division ratio can even be taken between 0 and 1; in addition, the order of convergence is increased. For twice differentiable functions the full order of convergence is obtained. Analogous results about the convergence of histo splines are proved.
    Notes: Zusammenfassung In der Hauptsache wird gezeigt, daß quadratische Interpolationssplines ohne zusätzliche Voraussetzungen an das Splinegitter gegen die erzeugende Funktion konvergieren, sofern diese stetig ist. Dabei kann das Interpolationsgitter mit einem zwischen $$1 - \frac{{\sqrt 2 }}{2}$$ und $$\frac{{\sqrt 2 }}{2}$$ gelegenen Teilungsverhältnis aus dem Splinegitter erzeugt werden. Im Falle von stetig differenzierbaren Funktionen, bei denen das Teilungsverhältnis sogar zwischen 0 und 1 gewählt werden kann, erhöht sich die Konvergenzordnung der zugehörigen Splines und wird bei zweimaliger Differenzierbarkeit voll ausgeschöpft. Analoge Resultate werden über die Konvergenz von Flächenabgleichssplines gewonnen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02252032
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  • 8
    Electronic Resource
    Electronic Resource
    Ein kubisch konvergentes Einschließungsverfahren zur Inversion positiver Elemente (1977)
    Springer
    Computing 19 (1977), S. 175-178 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Abstract The iteration $$y_{n + 1} = \sup (y_n ,x_n + x_n (e - ax_n )),x_{n + 1} = \inf (x_n ,x_n + y_{n + 1} (e - ax_n ))$$ generating sequences (x n ) and (y n ) is considered in normed, partially ordered rings. Under certain conditions it is shown, that the inversea −1 of an elementa≧0 is monotonously enclosed and that both sequences converge toa −1 with the order three.
    Notes: Zusammenfassung In normierten halbgeordneten Ringen wird das Verfahren $$y_{n + 1} = \sup (y_n ,x_n + x_n (e - ax_n )),x_{n + 1} = \inf (x_n ,x_n + y_{n + 1} (e - ax_n ))$$ betrachtet und nachgewiesen, daß es unter bestimmten Voraussetzungen die Inversea −1 eines positiven Elementesa monoton einschließt und zusätzlich kubisch gegena −1 konvergiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02252355
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  • 9
    Electronic Resource
    Electronic Resource
    Über Verfahren zur zweiseitigen Approximation inverser Elemente (1976)
    Springer
    Computing 17 (1976), S. 59-67 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Abstract In a partially ordered ring, a set of iterative methods is constructed in order to approximate the inverse of a given element, not necessarily positive or inverse-positive. Two sequences are generated both converging to the inverse. In addition the inverse is monotonously enclosed. The method of order four has the maximal efficiency index.
    Notes: Zusammenfassung Anknüpfend an Arbeiten von G. Alefeld und J. Herzberger und von J. W. Schmidt werden in einem halbgeordneten RingR Iterationsverfahren untersucht, welche geeignet sind, die Inverse eines nicht notwendig positiven oder inverspositiven Elementesa∈R zu approximieren. Es werden jeweils zwei Folgen (X n ) und (y n ) konstruiert, welche beide gegen die Inversea −1 konvergieren und diese zusätzlich im Sinne vonX n−1 ≦X n ≦a −1 ≦y n ≦y n−1 monoton einschließen. Von den betrachteten Verfahren hat das vierter Ordnung den größten Effektivitätsindex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02252260
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  • 10
    Electronic Resource
    Electronic Resource
    Monotone Einschließung von Inversen positiver Elemente durch Verfahren vom Schulz-Typ (1976)
    Springer
    Computing 16 (1976), S. 211-219 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Abstract The conditional iterationx n+1 =sup (x n ,x n +x n (e−ax n )),y n−1 =inf (y n ,x n +y n (e−ax n )) generating sequences (x n ) and (y n ) is considered in partially ordered spaces. Under certain conditions it is shown, that the inversea −1 of a positive elementa≧0 is monotonously enclosed in the sensex n ≦x n+1 ≦a −1 ≦y n+1 ≦y n and that (x n ) and (y n ) converge toa −1 quadratically.
    Notes: Zusammenfassung Es wird gezeigt, daß die bedingte Iterationx n+1 =sup (x n ,x n +x n (e−ax n )),y n+1 =inf (y n ,x n +y n (e−ax n )) unter bestimmten Voraussetzungen die Inversea −1 eines positiven Elementsa≧0 gemäßx n ≦x n+1 ≦a −1 ≦y n+1 ≦y n monoton einschließt und daß die Folgen (x n ) und (y n ) quadratisch gegena −1 konvergieren.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02280880
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