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  • 1
    Electronic Resource
    Electronic Resource
    Effects of Axial and Orthogonal Applied Electric Fields on Solute Transport in Poiseuille Flows. An Area Averaging Approach (1995)
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 34 (1995), S. 886-894 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie00042a022
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Capillary gel electrophoresis of nucleic acids in pluronic F127 copolymer liquid crystals (1999)
    Springer
    Chromatographia 49 (1999), S. S65 
    Details
    ISSN: 1612-1112
    Keywords: Review ; Capillary electrophoresis ; DNA ; Oligonucleotides ; Pluronic polymers ; Liquid crystals ; Micelles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The liquid crystalline gel phases of solutions of Pluronic F127, a triblock copolymer, were recently introduced as an alternative to disordered solutions of random coil polymers as replaceable media for capillary gel electrophoresis (CGE). Pluronic F127, from BASF, is a copolymer of poly(ethylene oxide) and poly(propylene oxide) with the approximate formula (EO)106 (PO)70 (EO)106. Polymer chains aggregate into spherical micelles in aqueous solutions, with poly(propylene oxide) chains creating a hydrophobic core surrounded by brushes of hydrated poly(ethylene oxide) tails. Crowding at high concentrations promotes ordering of micelles. Solutions in the range of about 14–24 % polymer are self-supporting, gel-like cubic liquid crystals at 25–30°C, but when cooled they become low viscosity liquids that are easily loaded into capillaries. This article reviews applications of Pluronic F127 media for capillary gel electrophoresis separations of nucleic acids of several types including oligonucleotides, double stranded DNA fragments, and supercoiled plasmid DNAs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02468978
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  • 3
    Electronic Resource
    Electronic Resource
    An integral-spectral approach for reacting Poiseuille flows (1996)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 42 (1996), S. 23-41 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An integral-spectral formulation for laminar reacting flows in tubular geometry (tubular Poiseuille flows) is introduced and performed within an operator-theoretic frame-work where the original convective-diffusive differential transport problem coupled with reaction is inverted to give an integral equation. This equation is of second kind and of the Volterra type with respect to the axial coordinate of the tube with a kernel given by Green's function. Green's function is identified by a methodology that gives the Mercier spectral expansion in terms of eigenvalues and eigenfunctions of the Stürm-Liouville problem in the radial variable of the tube. Eigenvalue problems for both Dirichlet and von Neumann boundary conditions are solved in terms of analytical functions (Poiseuille functions) and compared with the values found in the literature. The groundwork is set for future applications of the methodology to solving a wide variety of problems in convective-diffusive transport and reaction. Examples with wall and bulk chemical reaction are given to illustrate the technique.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690420105
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    Paper (German National Licenses)
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