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  • 1
    Electronic Resource
    Electronic Resource
    Hydrophobic and electrostatic parameters in bacterial adhesion (1990)
    Springer
    Aquatic sciences 52 (1990), S. 103-114 
    Details
    ISSN: 1420-9055
    Keywords: Adhesion ; DLVO theory ; adhesion isotherm ; hydrophobic interactions ; electrostatic interactions ; protein coating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Recently it has been shown that the initial stages of bacterial adhesion to a model-surface of sulphated polystyrene can best be described using hydrophobic and electrostatic parameters. In the present study it is tested whether these parameters can generally be applied to predict bacterial adhesion by using (i) glass, as a model for hydrophilic and natural surfaces of silicates and oxides, (ii) polystyrene coated with proteins, as a model for a surface coated with an organic layer, and (iii) river Rhine sediment, as an example of a natural surface. Adhesion to glass was dominated by electrostatic interaction, whereas adhesion to polystyrene coated with various types of proteins depended on the surface characteristics of the bacteria and the type of protein. By relating Van der Waals interactions to hydrophobicity of the interacting species, the adhesion of bacteria to the various surfaces including the river Rhine sediments could be interpreted in terms of the DLVO-theory. It is therefore concluded that the conceptual principles of the DLVO-theory (interplay of Van der Waals and electrostatic interactions) are suitable to describe, at least qualitatively, the initial processes of bacterial adhesion to a wide range of surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878244
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  • 2
    Electronic Resource
    Electronic Resource
    Bacterial adhesion: A physicochemical approach (1989)
    Springer
    Microbial ecology 17 (1989), S. 1-15 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The adhesion of bacteria to solid surfaces was studied using a physicochemical approach. Adhesion to negatively charged polystyrene was found to be reversible and could be described quantitatively using the DLVO theory for colloidal stability, i.e., in terms of Van der Waals and electrostatic interactions. The influence of the latter was assessed by varying the electrolyte strength. Adhesion increased with increasing electrolyte strength. The adhesion Gibbs energy for a bacterium and a negatively charged polystyrene surface was estimated from adhesion isotherms and was found to be 2–3 kT per cell. This low value corresponds to an adhesion in the secondary minimum of interaction as described by the DLVO theory. The consequences of these findings for adhesion in the natural environment are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02025589
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Energy and entropy: a thermodynamic approach to sustainability (1997)
    Springer
    The environmentalist 17 (1997), S. 57-62 
    Details
    ISSN: 1573-2991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Thermodynamics is a basic science that formulates the rules for the conversion of energy and matter from one form into another. It sets the physical limits for the evolution of and the developments in the world around us. In contradiction to the mechanical approach, thermodynamics indicates that economic growth leads to increasing disorder. More specifically, increasing the flows of energy and matter through society, as happens in the process of ongoing industrialization, leads to progressive depletion of available energy and matter or, otherwise stated, to increased entropy. Excessive entropy production is reflected in natural disorders such as the greenhouse effect, ozone holes, environmental pollution, etc. Sustainable development can only be approached by imposing a close to steady-state lifestyle on mankind.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018535529785
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  • 4
    Electronic Resource
    Electronic Resource
    Protein adsorption on polystyrene latex particles (1995)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 6 (1995), S. 518-525 
    Details
    ISSN: 1042-7147
    Keywords: polystyrene latex ; protein adsorption ; adsorption isotherm ; electrophoresis ; hydrogen ion titration ; calorimetry ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Protein adsorption is the net result of various types of interaction between the different components present in the system, i.e. the sorbent surface, the protein(s), the solvent and any other solutes such as low molecular weight electrolyte. In this paper methods and techniques will be discussed to study the mechanism of protein adsorption on, in particular, colloidal particles. The discussion is based on experimental data obtained with relatively simple systems that contain one well-defined protein and well-characterized polystyrene latexes. Thus, the adsorption behavior of lysozyme and α-lactalbumin are compared, emphasizing the role of structural rearrangements in the protein molecule.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1995.220060713
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    Paper (German National Licenses)
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