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  • Inorganic Chemistry  (1)
  • Polymer and Materials Science  (1)
  • preparation
  • Bis(1, 3-diketonato)cobalt-bisimidazoles
  • [Li(TMED)2][Co(COD)2]
  • Wiley-Blackwell  (2)
  • 1980-1984  (2)
  • 1983  (2)
Collection
Keywords
  • Inorganic Chemistry  (1)
  • Polymer and Materials Science  (1)
  • preparation
  • Bis(1, 3-diketonato)cobalt-bisimidazoles
  • [Li(TMED)2][Co(COD)2]
  • +
Publisher
  • Wiley-Blackwell  (2)
Years
  • 1980-1984  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 17 (1983), S. 931-943 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: A study using an electro-osmotic cell suitable for actuating an implantable insulin micropump showed that controlled variable flow rates in the order of 0.2 mL/day are possible. The cell functioned continuously with low energy and power requirements and long service life. The principle of operation is compatible with achieving the very low flow rates necessary if highly concentrated insulin is to be used to avoid frequent insulin reservoir refilling. An electro-osmotic cell, Ag/ AgCl/NaCl(aq)/ cation exchange membrane/NaCl(aq)/ AgCl/ Ag, was connected to a constant current power supply which reversed the direction of the current every 10 mins causing a to-and-fro transport of fluid through the membrane. Flow rates of 0.15-0.60 μL/min were achieved with currents of 2.5-10 mA. At the low flow rate, energy consumption was 6.4 × 10-2 J/μL and peak power requirement was 〈2.0 × 10-4 W. Fluid was transported against a pressure gradient of 52 cm Hg. The cell contained a total electrolyte volume of 〈0.25 mL. The membrane showed no change in properties after 10,000 current reversals (69 days). To function as an actuator for an implantable insulin micropump, the electro-osmotic cell requires a switching and valving assembly; a suitable design for this is briefly considered.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 504 (1983), S. 105-112 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polyamino Alcohols as Bifunctional Extractants for Copper(II)Polyamino alcohols obtained by the addition of mono- or bifunctional epoxides to disecondary diamines are studied with regard to their applicability to copper(II) extraction. The simple diamino diols IV, V, and VI proved to be inefficient. But, depending on the anion, distribution ratios D up to 1000 were measured with the polyamino alcohol III (chloroform as a diluent) in weakly acidic solution. This is a result of the special structure of the copper(II) complex of III which is both a metal chelate and a substituted ammonium salt. The ammonium part, because of its high affinity to the chloroform phase, has the function of a phase-transfer reagent of the chelate part.
    Notes: Polyaminoalkohole, die durch Addition von mono- oder bifunktionellen Epoxiden an disekundäre Diamine entstehen, werden auf ihre Verwendbarkeit als Extraktionsmittel für Kupfer(II) geprüft. Während sich die einfachen Diaminodiole IV bis VI als ungeeignet erweisen, werden mit dem Polyaminoalkohol III (Verdünnungsmittel Chloroform) abhängig vom Anion in schwach saurer Lösung maximale Verteilungsverhältnisse D von 1000 gefunden. Dieser Effekt geht auf den besonderen Charakter der Kupfer(II)-Komplexe von III zurück, die die Funktion eines Metallchelates und eines substituierten Ammoniumsalzes in sich vereinigen. Der Ammoniumteil mit seiner hohen Affinität für die Chloroformphase wirkt als Phasentransfer-Reagenz für den Chelatteil.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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