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Dispersion and Absorption in Dielectrics I. Alternating Current Characteristics
, 1941The dispersion and absorption of a considerable number of liquid and dielectrics are represented by the empirical formula e*−e∞=(e0−e∞)/[1+(iωτ0)1−α]. In this equation, e* is the complex dielectric constant, e0 and e∞ are the ``static'' and ``infinite ...
K. Cole, R. Cole
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The dispersion theory of dispersion forces
Physics Reports, 1989The long-range forces that act between neutral atoms and molecules have been known as dispersion forces since the work of London, who was the first to make manifest the connection between these forces and the dispersion of light by atoms, already guessed at by Newton.
Joseph Sucher, Gerald Feinberg, C. K. Au
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Study on the dispersion mechanism of the polycarboxylic acid dispersant for disperse dyes
Journal of Molecular Liquids, 2022Abstract Taking C.I. Disperse Blue 79 as the simulation object, the dispersion mechanism of polycarboxylic acid dispersant (poly(SMA-g-IP-MPEG)) for disperse dyes was studied by molecular dynamics simulations. The results show that the hydrophilicity of the dispersant mainly depends on the maleic acid residues; the ionized carboxylate groups of the ...
Yi Zhong +6 more
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Multivariate dispersion as a measure of beta diversity.
Ecology Letters, 2006Beta diversity can be defined as the variability in species composition among sampling units for a given area. We propose that it can be measured as the average dissimilarity from individual observation units to their group centroid in multivariate space,
Marti J. Anderson +2 more
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Dispersion and dispersing agents
Pigment & Resin Technology, 1973The term dispersion is used to refer to the process of incorporating a powder into a liquid medium so that the final product consists of fine particles distributed throughout the medium. The dispersion is termed ‘colloidal’ if at least one dimension of the particles is <1µ>1mµ.
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Dispersion Entropy: A Measure for Time-Series Analysis
IEEE Signal Processing Letters, 2016One of the most powerful tools to assess the dynamical characteristics of time series is entropy. Sample entropy (SE), though powerful, is not fast enough, especially for long signals.
M. Rostaghi, Hamed Azami
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Decentralisation, Dispersal and Dispersion
South African Geographical Journal, 1974Abstract The terms decentralisation, dispersal and dispersion are used extensively in the literature of regional economic development. The first may refer to the decentralisation of core areas, to the process of dispersal, or to the state of a spatial system. The second term is concerned mainly with process and the third with pattern but no consistency
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Biological Reviews, 2011
Dispersal costs can be classified into energetic, time, risk and opportunity costs and may be levied directly or deferred during departure, transfer and settlement. They may equally be incurred during life stages before the actual dispersal event through investments in special morphologies.
Bonte, Dries +23 more
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Dispersal costs can be classified into energetic, time, risk and opportunity costs and may be levied directly or deferred during departure, transfer and settlement. They may equally be incurred during life stages before the actual dispersal event through investments in special morphologies.
Bonte, Dries +23 more
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Extension of the D3 dispersion coefficient model.
Journal of Chemical Physics, 2017A new model, termed D4, for the efficient computation of molecular dipole-dipole dispersion coefficients is presented. As in the related, well established D3 scheme, these are obtained as a sum of atom-in-molecule dispersion coefficients over atom pairs.
Eike Caldeweyher +2 more
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Competition for Dispersal in Ant-Dispersed Plants
Science, 1981Two closely related and coexisting plants (Chenopodiaceae) of the Australian arid zone are adapted for seed dispersal by ants. These facultatively perennial shrubs persist in saltbush communities largely as a result of highly directional dispersal to ant mounds, where conditions are favorable for establishment and growth.
Diane W. Davidson, S. R. Morton
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