Zobrazeno 1 - 10
of 398
pro vyhledávání: '"Hilfer, R"'
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Hilfer, R.1 (AUTHOR) R.Hilfer@icp.uni-stuttgart.de, Hauskrecht, J.1 (AUTHOR)
Publikováno v:
European Physical Journal B: Condensed Matter. Jul2022, Vol. 95 Issue 7, p1-26. 26p.
Autor:
Hilfer, R.
Publikováno v:
J.Non-Crystalline Solids, vol. 305 (2002), page 122
Analytical representations in the time and frequency domains are derived for the most frequently used phenomenological fit functions for non-Debye relaxation processes. In the time domain the relaxation functions corresponding to the complex frequenc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212622
Publikováno v:
Phys.Rev.E 2002
Numerical micropermeametry is performed on three dimensional porous samples having a linear size of approximately 3 mm and a resolution of 7.5 $\mu$m. One of the samples is a microtomographic image of Fontainebleau sandstone. Two of the samples are s
Externí odkaz:
http://arxiv.org/abs/cond-mat/0202525
Autor:
Hilfer, R.
The paper discusses local porosity theory and its relation with other geometric characterization methods for porous media such as correlation functions and contact distributions. Special emphasis is placed on the charcterization of geometric observab
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105458
Publikováno v:
Phys. Rev. E. 62(1), 893-899, 2000
A simulated annealing algorithm is employed to generate a stochastic model for a Berea and a Fontainebleau sandstone with prescribed two-point probability function, lineal path function, and ``pore size'' distribution function, respectively. We find
Externí odkaz:
http://arxiv.org/abs/cond-mat/0007459
Autor:
Hilfer, R.
Publikováno v:
J.Phys.Chem B, vol. 104, page 3914, (2000)
A fractional diffusion equation based on Riemann-Liouville fractional derivatives is solved exactly. The initial values are given as fractional integrals. The solution is obtained in terms of $H$-functions. It differs from the known solution of fract
Externí odkaz:
http://arxiv.org/abs/cond-mat/0006427
Autor:
Hilfer, R.
Publikováno v:
Lecture Notes in Physics, vol. 519, pages 77-82, Springer, Berlin 1999
Time evolutions whose infinitesimal generator is a fractional time derivative arise generally in the long time limit. Such fractional time evolutions are considered here for random walks. An exact relationship is given between the fractional master e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005516
Publikováno v:
Granular Matter, vol. 2, page 137, (2000)
An approximate method to calculate dielectric response and relaxation functions for water saturated sedimentary rocks is tested for realistic threedimensional pore space images. The test is performed by comparing the prediction from the approximate m
Externí odkaz:
http://arxiv.org/abs/cond-mat/9910488
A quantitative comparison between the experimental microstructure of a sedimentary rock and three theoretical models for the same rock is presented. The microstructure of the rock sample (Fontainebleau sandstone) was obtained by microtomography. Two
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908478