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Digitale Medien

The viscosity of fiber suspensions at low fiber volume fractions (1981)

Miles, J. N. ; Murty, N. K. ; Modlen, G. F.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 21 (1981), S. 1171-1172

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ISSN: 0032-3888

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: The viscosities of suspensions of glass fibers in an aqueous solution of sucrose have been studied by use of a capillary viscometer. In the aligned condition in the capillary, the viscosity depends little on shear rate within the range studied or on fiber length, but increases with increasing volume fraction of the fibers. The entrance effect was found to depend strongly on fiber volume fraction and fiber length: this indicates that the suspensions are relatively resistant to flow during the initial stages while alignment takes place.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pen.760211710

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Digitale Medien

Problems in heathland and grassland dynamics (1981)

Miles, J.

Springer

Plant ecology 46-47 (1981), S. 61-74

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ISSN: 1573-5052

Schlagwort(e): Allelopathy ; Competition ; Disease ; Dispersal ; Fire ; Grassland ; Grazing ; Heathland ; Soil ; Stability

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract A review of factors governing vegetation change in heathlands and grasslands is presented, with emphasis on soil factors. Climate, microclimate, fire, fauna, grazing by vertebrates, grazing by invertebrates, disease, dispersal, establishment, competition, allelopathy, stabilization, soil formation and podzolization are discussed with emphasis on inconsistencies and lacks in our present knowledge. Examples are mainly from NW European Calluna heath and related woodlands.