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  • 1990-1994  (4)
  • Apparent molar volumes  (1)
  • Chemistry  (1)
  • Micellization  (1)
  • Stirrups  (1)
  • Nuclear reactions
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Pediatric stirrups for anorectal surgery (1991)
    Springer
    Diseases of the colon & rectum 34 (1991), S. 421-422 
    Details
    ISSN: 1530-0358
    Keywords: Stirrups ; Surgical position ; Anus ; Rectum ; Surgical technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A stirrup system to facilitate anorectal operation in a pediatric patient is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02053697
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Ion solvation in lithium battery electrolyte solutions. 1. Apparent molar volumes (1991)
    Springer
    Journal of solution chemistry 20 (1991), S. 1059-1078 
    Details
    ISSN: 1572-8927
    Keywords: Apparent molar volumes ; electrolytes ; lithium batteries ; propylene carbonate ; acetonitrile ; dimethoxyethane ; tetrahydrofuran ; mixed solvents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Apparent molar volumes, Vϕ(MX), of seven electrolytes (NaClO4, NaCF3SO3, NaBPh4, LiClO4, LiAsF6, Ph4AsCF3SO3 and KCF3SO3) have been determined by vibrating-tube densimetry in nonaqueous solvent mixtures of propylene carbonate (PC) with acetonitrile (AN), dimethoxyethane (DME) and tetrahydrofuran (THF). Vϕ(MX) was measured at an electrolyte concentration of 0.05M over the entire solvent composition range wherever possible. Ionic apparent molar volumes of transfer, ΔtVφ(ion), were obtained via the tetraphenylarsonium tetraphenylborate (TATB) assumption. ΔtVφ(ion) from PC to the mixed solvents are generally strongly negative for both cations and anions consistent with the greater compressibilities and lower dielectric constants of the cosolvents. In PC/AN mixtures cations and anions have similar values of ΔtVφ(ion) but in PC/DME and PC/THF mixtures they differ considerably. Cationic volumes show the expected dependence on ion-size but the differences among the anion volumes are much greater than expected at high cosolvent compositions. These effects are discussed in terms of preferential solvation and other solvent interactions. The implications of these findings for lithium batteries are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649097
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Binding studies of sodium dodecyl benzene sulphonate with poly(N-vinyl-2-pyrrolidone) (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 1201-1207 
    Details
    ISSN: 1435-1536
    Keywords: Micellization ; ultrasound velocity ; hydrophobic ; co-operative ; conformational
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The binding of sodium dodecyl benzene sulphonate (SDBS) with poly(N-vinyl-2-pyrrolidone) (PVP) has been investigated at 303.15 and 313.15 K using equilibrium dialysis, surface tension, viscosity, ultrasound velocity and ultrasound absorption techniques. From each of these studies four distinct regions of SDBS-PVP interactions were observed. Interaction of SDBS with PVP was found to involve the binding of surfactant dimers with the polymer molecule followed by usual micellization. The binding data has been analyzed in terms of various models of polymer-surfactant interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01095061
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    TSDC studies on thermoelectrets of CR-39(DOP) (1990)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 41 (1990), S. 48-51 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Aus dem Polymer CR-39(DOP) wurden Thermoelektrete formiert, und die thermisch stimulierten Entladungsströme wurden gemessen. Die Einflüsse unterschiedlicher Formierungstemperaturen, unterschiedlicher Feldstärken und der Lagerzeit wurden untersucht, um das Elektretverhalten dieses Materials zu beschreiben. Die Polarisation ist dipolaren Ursprungs. Die Aktivierungsenergic und die Relaxationszeit wurden berechnet.
    Notes: Thermoelectrets of CR-39(DOP) were formed and their thermally stimulated discharge current studied. In the present work, effects of different forming temperatures, polarizing fields and storage times have been studies with a view to understand the electret behaviour of this material. The polarization seems to have a dipolar origin. The activation energy and relaxation times have also been calculated.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1990.010410112
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    Paper (German National Licenses)
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