Faculties of University Bonn: Search
Now showing items 1-10 of 49
Modeling ripple formation
(2004)
The aim of this thesis was to approach the problem of ripple formation by a model which describes the phenomenon on a macroscopic scale and does not incorporate the detailed dynamics of the fluid flow field. We developed ...
Untersuchung zur Kinetik der Coesit - Quarz Umwandlung unter in-situ Bedingungen mittels Synchrotronstrahlung sowie Analyse der Mikrostrukturen im Transformationsbereich mittels TEM
(2003)
Synthetischer Coesit wurde in eine Hexaeder- Hochdruck-, Hochtemperaturapparatur verbracht und die rekonstruktive Transformation Coesit-Quarz durchgeführt, um die retrograde Metamorphosepfade natürlicher Gesteine besser ...
Entwicklung eines fernerkundungsgestützten Modellverbundes zur Simulation des urban-ruralen Landnutzungswandels in Nordrhein-Westfalen
(2011-07-12)
Die Veränderung der Landbedeckung und Landnutzung durch den Menschen nimmt im Zusammenhang mit der Diskussion über die Folgen des globalen Umweltwandels seit vielen Jahren eine zentrale Rolle ein. In weiten Teilen West- ...
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 ...
Einträge, Vorkommen, Verbreitung und gesundheitliche Bedeutung antibiotikaresistenter Bakterien in Abwasser und Gewässern: Ein sozial-ökologischer Beitrag zur Geographischen Gesundheitsforschung
(2011-11-29)
Antibiotika gelangen über natürliche Ausscheidung von Mensch und Tier sowie unsachgemäße Entsorgung in die Umwelt. Wichtige Eintragspfade stellen Abwasser, Klärschlamm und Gülle dar. Mikroorganismen können Resistenzen gegen ...
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 ...
Disaster risk preparedness: the role of risk governance, multi-institutional arrangements and polycentric frameworks for a resilient tsunami early warning system in Indonesia
(2010-07-27)
This study examines, discusses and provides insights into tsunami risk resilience through an analysis of systems of governance, their architecture, and actor-agent perspectives, concentrating on the development of a Tsunami ...
Analysis of Water Use and Crop Allocation for the Khorezm Region in Uzbekistan Using an Integrated Hydrologic-Economic Model
(2011-04-20)
Sustainable and efficient water management is of central importance for the dominant agricultural sector and thus for the population and the environment of the Khorezm region. Khorezm is situated in the lower Amu Darya ...
Soil organic carbon pools and their spatial patterns: rapid assessment using mid-infrared spectroscopy
(2011-02-09)
Soil organic carbon (SOC) plays an important role in global C cycling. Until today, the spatial patterns of individual SOC fractions are, however, largely undiscovered as traditional methods for their determination are too ...
Spatiotemporal dynamics of stress factors in wheat analysed by multisensoral remote sensing and geostatistics
(2007)
Plant stresses, in particular fungal diseases, basically show a high variability in space and time with respect to their impact on the host. Recent ‘Precision Agriculture’ techniques allow for a spatially and temporally ...