Search Results - "Schuhmann, R."

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  1. 1

    SOLUBILITY OF PRECURSORS AND CARBONATION OF WATERGLASS-FREE GEOPOLYMERS by Werling, N., Dehn, F., Krause, F., Steudel, A., Schuhmann, R., Emmerich, K.

    Published in Clays and clay minerals (01-10-2020)
    “…Geopolymers have the potential to function as an environmentally friendly substitute for ordinary Portland cement, with up to 80% less CO 2 emission during…”
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    Journal Article
  2. 2

    Coupled Hydromechanical Modelling of a Vertical Hydraulic Sealing System Based on the Sandwich Principle by Shao, H., Roelke, Ch, Emmerich, K., Popp, T., Koeniger, F., Schuhmann, R., Wieczorek, K., Hesser, J.

    Published in Rock mechanics and rock engineering (01-06-2024)
    “…For the shaft sealing of a repository for radioactive waste, a Sandwich sealing system was developed by KIT-CMM consisting of bentonite-based sealing segments…”
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    Extraction of effective metamaterial parameters by parameter fitting of dispersive models by Lubkowski, G., Schuhmann, R., Weiland, T.

    Published in Microwave and optical technology letters (01-02-2007)
    “…Effective electric permittivity and magnetic permeability for metamaterial structures are extracted from 3D field simulation data. The equivalent…”
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  5. 5

    Formation of arrested states in natural di- and trioctahedral smectite dispersions compared to those in synthetic hectorite; a macro- and microrheological study by Pilavtepe, M, Delavernhe, L, Steudel, A, Schuhmann, R, Willenbacher, N, Emmerich, K

    Published in Clays and clay minerals (01-08-2018)
    “…The effect of natural clay-mineral properties on the rheological behavior of dispersion is very important in new geotechnical and industrial applications. The…”
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  6. 6

    Effective Modeling of Double Negative Metamaterial Macrostructures by Lubkowski, G., Bandlow, B., Schuhmann, R., Weiland, T.

    “…This paper presents a numerical procedure applied to the modeling of double negative metamaterial (MTM) structures. At the unit-cell level, the properties of…”
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  7. 7

    Soil column experiments to quantify vadose zone water fluxes in arid settings by Pfletschinger, H., Engelhardt, I., Piepenbrink, M., Königer, F., Schuhmann, R., Kallioras, A., Schüth, C.

    Published in Environmental earth sciences (01-03-2012)
    “…For the determination of groundwater recharge processes in arid environments, vadose zone water fluxes and water storage should be considered. To better…”
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  8. 8

    P-Recovery from sewage by seeded crystallisation in a pilot plant in batch mode technology by Ehbrecht, A, Schönauer, S, Fuderer, T, Schuhmann, R

    Published in Water science and technology (01-01-2011)
    “…P-Recovery from actual sewage by P-RoC-technology (Phosphorus Recovery by Crystallisation of phosphate mineral phases from waste- and processwater) was studied…”
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  9. 9

    Computation of resonances in photonic crystal nanocavities by Bandlow, B., Classen, C., Schuhmann, R.

    Published in Radio science (01-10-2011)
    “…The spatial confinement of light is an important prerequisite for the excitation of light‐matter interactions and nonlinear optics. Photonic crystal…”
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  10. 10

    Analysis of Single-Cell Modeling of Periodic Metamaterial Structures by Bandlow, B., Schuhmann, R., Lubkowski, G., Weiland, T.

    Published in IEEE transactions on magnetics (01-06-2008)
    “…We propose a comparison of two approaches to analyze the periodic arrays of left-handed metamaterials by field simulations in a single unit cell. First, a…”
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    Journal Article Conference Proceeding
  11. 11

    Dispersion and asymmetry effects of ADI-FDTD by Darms, M., Schuhmann, R., Spachmann, H., Weiland, T.

    “…In this paper, a generalized derivation of the alternating direction implicit finite-difference time-domain algorithm based on operator splitting is proposed…”
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  12. 12

    Solution of radiation and scattering problems in complex environments using a hybrid finite integration technique - uniform theory of diffraction approach by Skarlatos, A., Schuhmann, R., Weiland, T.

    “…The finite integration technique (FIT) is combined with the uniform geometrical theory of diffraction (UTD) for the solution of radiation and scattering…”
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  13. 13

    Sensitivity analysis of waveguide eigenvalue problems by BurschÈñpers, N, Fiege, S, Schuhmann, R, Walther, A

    Published in Advances in radio science (29-07-2011)
    “…We analyze the sensitivity of dielectric waveguides with respect to design parameters such as permittivity values or simple geometric dependencies. Based on a…”
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  14. 14

    Modeling of field singularities at dielectric edges using grid based methods by Classen, C, Gjonaj, E, Römer, U, Schuhmann, R, Weiland, T

    Published in Advances in radio science (29-07-2011)
    “…Electric field singularities at sharp metallic edges or at a dielectric contact line can be described analytically by asymptotic expressions. The a priori…”
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  15. 15

    A uniformly stable conformal FDTD-method in Cartesian grids by Zagorodnov, I.A., Schuhmann, R., Weiland, T.

    “…A conformal finite‐difference time‐domain algorithm for the solution of electrodynamic problems in general perfectly conducting 3D geometries is presented…”
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  16. 16

    Using quasi-guided modes for modeling the transfer behavior of bent dielectric slab waveguides by Stallein, M, Bandlow, B, Schuhmann, R

    Published in Advances in radio science (30-09-2010)
    “…The connection of two straight dielectric multimode slab waveguides by a circular bent waveguide is analyzed by means of quasi-guided modes. These modes…”
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  17. 17

    Polygonal finite elements by Euler, T., Schuhmann, R., Weiland, T.

    Published in IEEE transactions on magnetics (01-04-2006)
    “…A new class of finite element basis functions for arbitrary polygons is presented. The approximation spaces fulfill the same commuting properties as the…”
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    Journal Article Conference Proceeding
  18. 18

    3-D eigenmode calculation of metallic nano-structures by Bandlow, B, Schuhmann, R

    Published in Advances in radio science (18-05-2009)
    “…In the calculation of eigenfrequencies of 3-D metallic nanostructures occurs the challenge that the material parameters depend on the desired eigenfrequency…”
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  19. 19

    Subspace projection extrapolation scheme for transient field simulations by Clemens, M., Wilke, M., Schuhmann, R., Weiland, T.

    Published in IEEE transactions on magnetics (01-03-2004)
    “…A subspace projection extrapolation (SPE) scheme is introduced for the start vector generation for the iterative solution of the algebraic systems of equations…”
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  20. 20

    Hierarchical FIT/FE Discretization for Dielectric Subcell Interfaces by De Gersem, H., Schuhmann, R., Feigh, S., Weiland, T.

    Published in IEEE transactions on magnetics (01-06-2008)
    “…The discretization of an electrostatic problem by the finite integration technique (FIT) is augmented with specialized finite-element shape functions for…”
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    Journal Article Conference Proceeding