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  • degree of counterion binding  (2)
  • 85.60  (1)
  • Acidic glycosaminoglycans in inner ear and other organs  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Fundamental absorption edge of evaporated amorphous WO3 films (1981)
    Springer
    Applied physics 24 (1981), S. 55-59 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 78.20 ; 42.80 ; 85.60
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract The fundamental absorption edge of evaporated WO3 films is investigated. The optical gap of the virgin film is estimated to be 3.41 eV at room temperature and it decreases with increase of annealing temperature up to 200°C. Annealing at 300°C leads to change in the spectral shape, which is caused by crystallization. For the films annealed at 200°C, temperature coefficient of the optical gap is estimated to be −2×10−4 eV/K and the slope of Urbach's tail is found to be independent of measuring temperature up to 200°C. With electrolytic coloration, shift of the optical gap toward higher energy is observed. Magnitude of this shift is estimated to be 0.05 eV at the color center concentration of 7.5×1021 cm−3 when H+ electrolyte is used. If Li+ electrolyte is used, the magnitude of this shift is about three times larger than in the case of H+ electrolyte. This fact is interpreted by a small change in the host matrix structure owing to the injection of proton or Li+ during coloration.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00900398
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  • 2
    Digitale Medien
    Digitale Medien
    A temperature study on critical micellization concentration (CMC), solubility, and degree of counterion binding of α-sulfonatomyristic acid methyl ester in water by electroconductivity measurements (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 474-479 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Critical micellization concentration (CMC) ; solubility ; degree of counterion binding ; Krafft point ; α-sulfonatomyristic acid methyl ester
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract  For a sodium salt of α-sulfonatomyristic acid methyl ester (14SFNa), one of the α-SFMe series surfactants, critical micellization concentration (CMC), solubility and degree of counterion binding (β) were determined by means of electrocon-ductivity measurements at different temperatures (at every 5 °C) ranging from 15 to 50 °C. The phase diagram of 14SFNa in pure water was constructed from the CMC- and solubility-temperature data, in which the Krafft temperature (critical solution temperature) was found around 0 °C. The changes in the Gibbs energy, ΔG 0 m, enthalpy, ΔH 0 m, and entropy, ΔS 0 m, upon micelle formation as a function of temperature were evaluated taking βvalues into calculation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050106
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  • 3
    Digitale Medien
    Digitale Medien
    An electroconductivity study on degree of counterion binding or dissociation of a-sulfonatomyristic acid methyl ester micelles in water as a function of temperature (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 790-796 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Electroconductivity ; differential conductivity ; degree of counterion binding ; dissociation degree of micelles ; α-sulfonato-myristic acid methyl ester
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract  For a sodium salt of α-sulfonatomyristic acid methyl ester (14SFNa), one of the α-SFMe series surfactants, the differential conductivity (∂κ/∂C) T , P vs. square root of concentration (√C) was employed in order to determine not only CMC but also the limiting molar conductance (Λ0) and the molar conductance of micellar species (ΛM). Based on the data of the degree of counterion binding to micelles (β) determined previously at different temperatures ranging 15–50 °C at every 5 °C, the experimental values of the degree of dissociation (ionization) of a micelle (αEX) were calculated by regarding as αEX=1−β. The ratio ΛM/Λ0 corresponding to the ratio of slopes below and above CMC in the curve of specific conductivity (κ) vs. concentration (C), which has been often assumed to be the degree of ionization of micelles (α), was compared with the present αEX. However, the ratio ΛM/Λ0 (=α) was found to have a correlationship with αEX (=1−β) as αEX≈0.40×(ΛM/Λ0), or strictly, αEX=0.40 (ΛM/Λ0)+0.08, indicating that the simple ratio of the slopes below and above CMC in κ vs. C curve is not true for αEX=1−β. On the other hand, the method proposed by Evans gave a value closer to αEX compared with the simple ratio.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050149
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  • 4
    Digitale Medien
    Digitale Medien
    A comparison of acidic glycosaminoglycans in the inner ear and other organs: Electrophoretic microanalysis (1976)
    Springer
    European archives of oto-rhino-laryngology and head & neck 214 (1976), S. 149-155 
    Details
    ISSN: 1434-4726
    Schlagwort(e): Acidic glycosaminoglycans in inner ear and other organs ; Electrophoretic microanalysis ; Saure Glykosaminoglykane im Innenohr und anderen Organen ; Elektrophoretische Mikroanalyse
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die quantitative und qualitative Analysen der sauren Glykosaminoglykane in den Grundsubstanzen der lateralen Wand des häutigen Labyrinths, der Nieren, des Gehirns und der Leber von Meerschweinchen wurden mittels der elektrophoretischen Mikroanalysenmethode ausgeführt. Die laterale Wand der Schnecke enthielt die höchste Menge (0,46±0,08% pro Trockengewicht) der sauren Glykosaminoglykane, die aus Chondroitinsulfat-B (75%), Chondroitinsulfat-A (12%) und Hyaluronsäure (13%) bestanden. Jedoch schwankt die Zusammensetzung der Glykosaminoglykane im Innenohr, ebenso wie in den anderen Organen, erheblich. Eine mögliche Bedeutung der Glykosaminoglykane für die Funktion des Hörorgans wurde diskutiert.
    Notizen: Summary Acidic glycosaminoglycans in the ground substance of the membranous cochlear lateral wall, kidney, brain and liver of the guinea pigs were quantitatively and qualitatively analyzed, using electrophoretic microanalysis. The lateral wall of the cochlea showed highest content (0.46±0.08%/D.W.) of acidic glycosmainoglycans, which were chondroitin sulfate-B (75%), chondroitin sulfate-A (12%) and hyaluronic acid (13%). However, the pattern of these acidic glycosaminoglycans in the inner ear differed from the other organs. A possible role of acidic glycosaminoglycans in the inner ear was discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00453611
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