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The aim of the book is to provide an analysis of the boundary element method for the numerical solution of Laplacian eigenvalue problems. The representation of Laplacian eigenvalue problems in the form of boundary integral equations leads to nonlinear eigenvalue problems for related boundary integral operators. The solution of boundary element… (More)

The numerical solution of elliptic or hyperbolic boundary value problems via the Boundary Element Method has a long tradition and is well developed nowadays. The two most popular discretization schemes of the underlying boundary integral equations are the Collocation method and the Galerkin method. While the first one has been adopted to both types of… (More)

- Katharina von der Hardt, Michael Andreas Kandler, +4 authors Wolfgang Rascher
- Critical care medicine
- 2004

OBJECTIVE
The study investigates the effectiveness of aerosol treatment on gas exchange and pulmonary inflammatory reaction using perfluorocarbons with different molecular structure and vapor pressure.
DESIGN
Experimental, prospective, randomized, controlled study.
SETTING
Experimental laboratory at a university hospital.
SUBJECTS
Twenty anesthetized… (More)

- Helfried Steiner, Renate Teppner, Günter Brenn, Nina Vankova, Slavka S Tcholakova, Nikolai Denkov Denkov
- 2005

- Krassimir D. Danov, Peter A Kralchevsky, Boris Naydenov, Günter Brenn
- Journal of colloid and interface science
- 2005

A colloidal particle adsorbed at a fluid interface could have an undulated, or irregular contact line in the presence of surface roughness and/or chemical inhomogeneity. The contact-line undulations produce distortions in the surrounding liquid interface, whose overlap engenders capillary interaction between the particles. The convex and concave local… (More)

The arterial wall consists of three major microstructural components, collagen, elastin, and smooth muscle cells; all of which play important roles in the cardiovascular function of health and disease. From a biomechanical perspective, collagen with its high tensile strength constitutes the most important component, endowing the arterial wall with strength… (More)

Wave propagation problems play an important role, not only in the scientific community, but also in industry. Think of acoustic scattering, sound radiation and other related problems. A common feature of these problems is the large or even infinite extension of the acoustic domain compared to the rather limited extension of the surface of the embedded… (More)

For a single soilbag filled with a cohesionless granular material analytical and numerical models based on a continuum approach are used to predict the evolution of deformation and stress under monotonic compression and plane strain conditions. Analytical models with different assumptions for the stress ratio distribution in the filling material, a constant… (More)

In this thesis we study optimal boundary control problems in energy spaces, their construction of robust preconditioners and applications to arterial blood flow. More precisely we first consider the unconstrained optimal Dirichlet and Neumann boundary control problems for the Poisson equation as a model problem. In both cases it turns out that the control… (More)

The arterial wall consists of three major microstructural components, collagen, elastin, and smooth muscle cells; all of which play important roles in the cardiovascular function of health and disease. From a biomechanical perspective, collagen with its high tensile strength constitutes the most important component, endowing the arterial wall with strength… (More)