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  • Polymer and Materials Science  (8)
  • Myoelectric control  (6)
  • Cadmium  (3)
  • Chemical Engineering  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Renal cadmium content in the West of Scotland (1983)
    Springer
    Urological research 11 (1983), S. 285-290 
    Details
    ISSN: 1434-0879
    Keywords: Trace metals ; Cadmium ; Kidney cortex ; Ischaemic heart disease ; Medulla
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The trace element content of kidneys has been documented in very few international centres. Significant differences can be demonstrated between the cortical and medullary levels of calcium, zinc and cadmium. For the West of Scotland the values for the latter are similar to those found in Scandinavia. There are significantly higher cadmium contents in subjects who smoke and who have evidence of ischaemic heart disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256348
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  • 2
    Electronic Resource
    Electronic Resource
    The effects of treatment on the hypercalciuria of chronic cadmium poisoning (1979)
    Springer
    Urological research 7 (1979), S. 285-289 
    Details
    ISSN: 1434-0879
    Keywords: Cadmium ; Iron ; Bendrofluazide ; Hypercalciuria Hyperzincuria ; Treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cadmium induces a variety of effects on kidney tubules including hypercalciuria. This is accompanied by hyperzincuria. The present work shows that both of these biochemical abnormalities can be corrected but where a state of cadmium-induced-anaemia exists urine zinc and calcium excretion do not follow the expected parallel course in response to iron therapy as they do with bendrofluazide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256610
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  • 3
    Electronic Resource
    Electronic Resource
    Histological and ultrastructural changes in rat kidney following cadmium injection (1977)
    Springer
    Urological research 5 (1977), S. 15-20 
    Details
    ISSN: 1434-0879
    Keywords: Cadmium ; Kidney ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cadmium injection in rats affects the genito-urinary system. The renal effects are generally considered to be mainly tubular. Light microscopy of 29 specimens confirms cellular damage in the glomeruli with changes in glomerular capillaries. Electron microscopic changes in the glomeruli confirm changes in the podocytes, thickening of the basement lamina, the occurrence of electron dense deposits in association with the capillary endothelium with platelet and polymorphonuclear cell accumulations which suggests opening of the endothelial junction of the glomerular vessels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00257111
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Temperature dependence of secondary crystallization in linear polyethylene (1969)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 7 (1969), S. 659-666 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A specimen of linear polyethylene was subjected to isothermal secondary crystallization at a series of temperatures below the primary isothermal crystallization temperature, the melting and primary crystallization stages being held constant throughout the investigation. Dilatometric measurements exhibit an S-character at low values of undercooling Tp - Ts, where Tp and Ts are, respectively, the primary and secondary crystallization temperatures; at larger undercoolings, however, an initial very rapid crystallization is followed by a very slow stage. When corrected for thermal contraction of the polymer, the net degree of secondary transformation is seen to peak at a temperature in the range 109-113°C. The S-character of the isotherms and the peaked temperature variation of degree of transformation lead to the conclusion that a large portion of the secondary crystallization consists of the nucleation and growth of the new crystallites. Johnson-Mehl-Avrami analysis leads to a model of heterogeneous nucleation within the remaining amorphous zones, followed by one-dimensional, diffusion-controlled growth.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1969.160070405
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  • 5
    Electronic Resource
    Electronic Resource
    Operator error in multistate myoelectric control systems (1978)
    Springer
    Medical & biological engineering & computing 16 (1978), S. 296-301 
    Details
    ISSN: 1741-0444
    Keywords: Error analysis ; Myoelectric control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Un système de commandes myoélectriques est celui, où le fonctionnement d'un dispositif est contrôlé par le potentiel électrique produit par la contraction volontaire d'un muscle. Ces systèmes sont surtout employés pour la commande de membres artificiels. Les premiers types de systèmes de commande était empiriques, mais de récents travaux ont produit des bases théoriques, pouvant prédire leur performance. Ceci devrait pouvoir améliorer les systèmes déjà existants, et rendre possible le développement de prothèses plus complexes.
    Abstract: Zusammenfassung Bei einem myoelektrischen Steuersystem wird der Betrieb eines Geräts durch ein elektrisches Potential gesteuert, das durch freiillige Kontraktion eines Muskels erzeugt wird. Diese Systeme wurden hauptsächlich zur Kontrolle künstlicher Glieder verwendet. Frühere Entwürfe des Steuersystems waren empirisch, jedoch wurden kürzlich einige theoretische Grundlagen erarbeitet, die ihre Leistung vorbestimmen können. Dieses wird zur Verbesserung der bestehenden Systeme führen und die Entwicklung mehr komplexer Prothesen wahrscheinlicher machen.
    Notes: Abstract A myoelectric control system is one in which the operation of a device is controlled by the electric potential produced by voluntary contraction of a muscle. These systems have been used mainly for the control of artificial limbs. Early design of the control systems was empirical, but recent work has provided some theoretical basis for predicting their performance. This should lead to improvements in existing systems and make feasible the development of more complex prostheses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442431
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Sensory-feedback system compatible with myoelectric control (1980)
    Springer
    Medical & biological engineering & computing 18 (1980), S. 65-69 
    Details
    ISSN: 1741-0444
    Keywords: Electrocutaneous stimulation ; Myoelectric control ; Prosthetics ; Sensory feedback
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Progress in the development of a system to provide sensory feedback of the pinch force of an artificial hand is described. Design criteria relating to electrocutaneous stimulation and compatibility with myoelectric control are discussed. Details of a practical system, presently in use by two amputees prior to full-scale clinical evaluation, are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442481
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  • 7
    Electronic Resource
    Electronic Resource
    A biphasic pulse burst generator for afferent nerve stimulation (1987)
    Springer
    Medical & biological engineering & computing 25 (1987), S. 77-80 
    Details
    ISSN: 1741-0444
    Keywords: Myoelectric control ; Nerve stimulator ; Pulse burst ; Sensory feedback
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442825
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  • 8
    Electronic Resource
    Electronic Resource
    Improved battery saving device for use with myoelectric control systems (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 203-205 
    Details
    ISSN: 1741-0444
    Keywords: Myoelectric control ; Battery saving device
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443938
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  • 9
    Electronic Resource
    Electronic Resource
    Amplifier input impedances for myoelectric control (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 527-530 
    Details
    ISSN: 1741-0444
    Keywords: Differential amplifiers ; Input impedance ; Myoelectric control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Normal requirements for differential and common-mode input impedance of amplifiers for biological signals are reviewed. It is shown that these are not sufficient for satisfactory performance of amplifiers in myoelectric control applications, where accidental opening of the input circuit through electrode movement must not make the system susceptible to external noise. The additional constraint imposed by this application is examined, and a circuit is presented illustrating its practical resolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443970
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  • 10
    Electronic Resource
    Electronic Resource
    Error rate in five-state myoelectric control systems (1980)
    Springer
    Medical & biological engineering & computing 18 (1980), S. 287-290 
    Details
    ISSN: 1741-0444
    Keywords: Man-machine systems ; Multistate control ; Myoelectric control ; Prosthetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A myoelectric control system is one in which the operation of a device is controlled by the electric potential produced by voluntary contraction of a muscle. The utilisation of a single muscle site for the 3-state control of a myoelectric prosthesis has proven beneficial for certain amputees. It has been proposed that a single muscle site could be used for 5-state control, perhaps for an elbow and hand. This paper presents a preliminary study of the error probability for 5-state control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443381
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