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  • Light-scattering  (2)
  • Colonization dynamics  (1)
  • Springer  (3)
  • American Institute of Physics
  • American Meteorological Society (AMS)
  • 2010-2014
  • 1990-1994  (3)
  • 1955-1959
  • 1950-1954
  • 1935-1939
Collection
Keywords
Publisher
  • Springer  (3)
  • American Institute of Physics
  • American Meteorological Society (AMS)
Years
  • 2010-2014
  • 1990-1994  (3)
  • 1955-1959
  • 1950-1954
  • 1935-1939
Year
  • 1
    Electronic Resource
    Electronic Resource
    Rheological measurements and light-scattering experiments of dilute solutions of high molecular polystyrene. Light-scattering of flowing polymer solutions (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 1250-1256 
    Details
    ISSN: 1435-1536
    Keywords: Light-scattering ; flowing polymer solution ; dilute polymer solution ; orientation and deformation of macromolecules ; polystyrene
    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 We describe the behavior of dilute polymer solutions by means of light-scattering under shear flow. Solution properties of polystyrene in benzene over a wide range of molecular weight has been studied to determine the coefficientsa andK of the Mark-Houwink relationship and to estimate the rheological conditions with regard to light-scattering experiments of flowing polymer solutions. The investigations were carried out to measure the shear-rate dependence of macromolecules in solution, e.g., to observe an orientation and changing of the mean-square radius of gyration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652533
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of Taylor vortex flow by means of laser light scattering (1992)
    Springer
    Rheologica acta 31 (1992), S. 274-282 
    Details
    ISSN: 1435-1528
    Keywords: Light-scattering ; flowing polymer solution ; dilute polystyrene solution ; Taylor-vortex ; solvent power
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract Rheological measurements and light-scattering experiments were performed on dilute solutions of high molecular polystyrene. We are able to describe the orientation behavior of chain molecules under shear flow by means of light-scattering. Beyond that these investigations of light-scattering of flowing polymer solutions are an useful and suitable tool for detection and characterization of Taylor vortex formation. We can estimate the appearance of these hydrodynamic instabilities, which overlay the laminar main flow and we can observe a typical influence of the solvent power on it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00366506
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  • 3
    Electronic Resource
    Electronic Resource
    Short-term effects of a catastrophic beaver dam collapse on a stream fish community (1991)
    Springer
    Environmental biology of fishes 31 (1991), S. 123-129 
    Details
    ISSN: 1573-5133
    Keywords: Benthic insects ; Colonization dynamics ; Disturbance ; Floods ; Landscape ecology ; Minnesota
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis We examined the short-term effects of the natural catastrophic collapse of a beaver dam on downstream benthic insect density and fish community structure in a headwater tributary of the Mississippi River. The catastrophic collapse of the dam and ensuing flash flood resulted in a dramatic (〈 90%) decrease in benthic insect density in riffle and pool habitats. Sixty days after collapse of the dam, insect densities in riffles were 62% of pre-collapse densities. Insect recolonization of pools was slower than for riffles; 60 days after collapse of the dam insect densities in pools were 8% of pre-collapse levels. Collapse of the beaver dam altered the structure of the downstream fish community by causing a short-term (2–4 days) influx of pond species, resulting in a brief increase in species richness and abundance. Fish species richness and abundance then decreased for 4–60 days to levels below those prior to the collapse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00001012
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