Mathematisch-Naturwissenschaftliche Fakultät: Suche
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Dynamical and Mechanistic Effects of High Pressure Fluids in the Earth's Crust
(2012-03-16)
Overpressurized fluids in the lithosphere play a significant role in a diverse range of globally observed natural hazards. Their occurrence during volcanic eruptions or earth degassing processes is apparent, but their ...
Characterization of metallic nanoparticles by high-resolution X-ray absorption and X-ray emission spectroscopy
(2012-03-16)
In almost all areas of technology, metallic nanoparticles are of interest due to their special thermal, electronic, magnetic and optical properties.
Their special properties are mainly due to their small size which ...
Their special properties are mainly due to their small size which ...
Measurement of the double polarization observables G and E in neutral and positive pion photoproduction off the proton
(2020-08-14)
The nucleons, as one of the most fundamental building blocks of visible matter, are built up of quarks and gluons. However, the interactions and dynamics inside the nucleons, which are mediated by the strong force and ......
Multi-stage Micropattern Gaseous Detectors for the ALICE TPC Upgrade - Studying and Modelling Charge Transfer and Energy Resolution
(2020-06-23)
With the upgrade of the LHC (Large Hadron Collider) at CERN, the interaction rate of ALICE
(A Large Ion Collider Experiment) will be increased up to 50 kHz for Pb-Pb collisions.
Thus the gated and rate-limited readout ...
Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions
(2012-08-31)
Groundwater level rise, root water uptake, or evaporation induces local upward water and solute fluxes in soils, causing soil salinization and rise of contaminants to the soil surface, and influencing the migration of ...
Interaction of light with impurities in lithium niobate crystals
(2011-08-04)
Congruent lithium niobate and 5-mol% MgO-doped lithium niobate (MgO:LN) crystals are widely used as nonlinear-optical crystals in frequency-conversion devices due to their large nonlinear-optic coefficients. These devices ...
Numerische Simulation der Interaktion von inkompressiblen Zweiphasenströmungen mit Starrkörpern in drei Raumdimensionen
(2010-09-30)
In dieser Arbeit stellen wir erstmalig einen parallelen Löser für inkompressible Zweiphasenströmungen mit Oberflächenspannung in drei Raumdimensionen vor, der Masseerhaltung und hohe Konvergenzordnung vereint. Als zweite ...
Symbolische Transferentropie: Charakterisierung gerichteter Interaktionen in nichtlinearen dynamischen Netzwerken
(2011-01-11)
Im Rahmen der vorliegenden Arbeit wird untersucht, inwiefern eine Charakterisierung der Kopplungsrichtung zwischen komplexen dynamischen Systemen mit einer auf Konzepten der nichtlinearen Dynamik, der Informationstheorie ...
Multivariate methods and the search for single top-quark production in association with a W boson in ATLAS
(2013-05-28)
This thesis describes three machine learning algorithms that can be used for physics analyses. The first is a density estimator that was derived from the Green’s function identity of the Laplace operator and is capable of ......
Multiscale Modelling and Simulation of Rapid Granular Flows
(2013-11-19)
Granular flows are often encountered in geophysical contexts like debris flows, snow and rock avalanches, and also in transport processes in engineering applications. The damage caused by geophysical mass flows can be huge. ...