Now showing items 1-20 of 22
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Designing and Piloting a household filter for the peri-urban population of Douala (Cameroon)
(2021-11-18)In rural and peri-urban regions of the developing world, many tube wells used as drinking water sources are microbially and chemically polluted. Consequently, hundreds of millions of people lack access to “safe” drinking ... -
Cretaceous to Cenozoic thermo-tectonic evolution and provenance analysis of the basement and some sedimentary successions northeast of the Songliao Basin, NE China
(2021-02-23)The major aim of this PhD thesis is to explore the post-Early Mesozoic thermo-tectonic evolution and provenance analysis of the area of satellite basins to the east of the Songliao basin in NE China, covering a huge area, ... -
Urbanisation, Land Use and Soil Resource: Spatio-Temporal Analyses of Trends and Environmental Effects in Two Metropolitan Regions of Ghana (West Africa)
(2020-12-23)With more than half of the world’s population already urbanised, global sustainability is partly hinged on how the urbanisation process is impacting the natural environment. Therefore, it is important to characterise, ... -
Charakterisierung minimaler und maximaler Hemmkonzentrationen verschiedener Spurenelemente in Biogasprozessen und Entwicklung eines vereinfachten Bestimmungsverfahrens
(2020-08-24)For optimal biogas formation processes in biogas plants numerous operating parameters must be within certain limits. A sufficient supply of essential macro- and micronutrients must be guaranteed for the conversion and ... -
Automated data processing and numerical methods for travel-time based hydraulic tomography
(2020-08-13)Travel time based hydraulic tomography is a useful and promising technique for reconstructing the spatial distribution of aquifer hydraulic properties (e.g., hydraulic diffusivity). Simultaneous Iterative Reconstruction ... -
Transfer of Nutrient and Harmful Elements from Soil to Rice and Health Risk Assessments for the Vietnamese Population
(2019-10-11)“Transfer of nutrient and harmful elements from soil into rice and health risk assessments for the Vietnamese population” Main and trace element concentrations in paddy soils and corresponding rice plants collected along ... -
Geochemical Characterization of Tea Leaves (Camellia sinensis) and Soils for Provenance Studies based on Compositional Data Analysis
(2019-06-17)Provenance studies on tea (Camellia sinensis) are an important tool to reconstruct the origin of tea products. This thesis explores the potential of using solely the ionome (main and trace element concentrations) of tea ... -
Chemical water quality in Selenge River Basin in Mongolia: spatial-temporal patterns and land use influence
(2018-10-18)Water is essential for life and for all human activities but also for preserving the environment and its resources. Rapidly growing population, intensification of agriculture, industrialization, urbanization, development ... -
Transfer of Main and Trace Elements from Soil to Plant with an Emphasis on Trace Element Supply for Biogas Digestion Plants
(2018-10-01)In this study trace element uptake by different plants and plant species on different soils was investigated. A special focus was on the uptake of the elements Co, Ni, Mn and Mo, as those were essential elements for ... -
Bioenergy resources from waste, energy crops and forest in Los Ríos Region (southern Chile) - A systemic approach based on sustainability on designing a bioenergy area
(2016-07-01)As many countries today, Chile is facing the taking off of renewable energies. Los Ríos Region in south-central Chile shows one of the highest biomass productivity. Therefore, in the quest for a scientific analysis of ... -
Integrated approaches of social-ecological resilience assessment and urban resilience management
(2016-02-10)The urban system is a multi-interaction system, due to the rapid urbanization and intertwined vulnerability of the ecological system. It will be a challenge to maintain a sustainable development of the urban and urbanizing ... -
Schadstoffemissionen bei der Verbrennung von Stroh, Holz und Biogas
(2013-07-25)Wood combustion of solid fuels in stoves and furnaces is widely used for residential heating in Germany. Approximately 15 million of 40 million households own small-scale furnaces (Struschka M. 2008). Biomass burning as ... -
GIS-gestützte Modellierung und Analyse von Biomassepotentialen in Niedersachsen - Einführung in das Pflanzenmodell BioSTAR
(2013-03-05)Biomass potentials for energy production are discussed controversially. On the one hand, the further expansion of the bio energy sector is demanded by the policy makers (in Germany and elsewhere), and on the other hand, ... -
Modelling and validation of agricultural and forest biomass potentials for Germany and Austria
(2012-07-04)The Biosphere Energy Transfer Hydrology Model (BETHY/DLR), a process model that estimates the net primary productivity of agricultural and forested areas was used to assess biomass potentials for Germany and Austria. ... -
Experimentelle Untersuchung zur Auflösungskinetik von Kaolinit und Montmorillonit in Anwesenheit von Sulfat, Phosphat, Amino- und Carbonsäuren sowie Harnstoff im offenen und geschlossenen System
(2006-03-08)The aim of the present study is to decipher mechanisms and kinetics for the reactions at the solid/liquid interface by experiments at well defined physical/chemical conditions. For this ... -
Changes in tropical rainforests landscapes as a consequence of selective logging and indigenous shifting cultivation in Forest Reserve Imataca (central zone) Bolívar State, Venezuela.
(2005-07-27)The degradation process of tropical land forests caused by traditional indigenous agriculture and commercial logging was evaluated in the central sector of the Forest Reserve Imataca in the ... -
Erdfallablagerungen des südlichen Harzvorlandes
(2005-03-23)Sediments from karst sínkholes of the Upper Permian (Zechstein) belt of southern Harz mountains are geochemically examinated. The aim of this research is the reconstruction of the ... -
GIS-basierte Analyse der känozoischen Geodynamik und Mineralisationsgeschichte der östlichen Syntaxis des Himalaya (NW-Yunnan/ VR China)
(2004-01-07)Analyses of Cenozoic geological evolution of NW Yunnan (PR China) are presented in this thesis. While other papers focus either exclusively on Tertiary or Quaternary history of this area, ... -
Ein Datenbanksystem (P.A.S.T) zur Verarbeitung und Interpretation von palynologischen Daten aus dem Paläogen Mitteleuropas mit Diversitätsbetrachtungen
(2002-04-18)A data base system (P.A.S.T) for processing and interpreting palynological data from the Palaeogene of Central Europe - application to diversity studiesThe first part of the thesis presents an outline ...