E-Dissertationen: Browsing E-Dissertationen by Title
Now showing items 219-238 of 1014
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Digital Filtering Algorithms for Decorrelation within Large Least Squares Problems
Siemes, Christian (2008)The GOCE (Gravity Field and steady-state Ocean Circulation Explorer) mission is dedicated to the determination of the Earth's gravity field. During the mission period of at least one year the GOCE satellite will collect ... -
Digital soil mapping using survey data and soil organic carbon dynamics in semi-arid Burkina Faso
Hounkpatin, Kpadé Ozias Laurentin (2018-04-27)With computer-assisted geostatistics and data mining methods, digital soil mapping (DSM) offers new possibilities for providing soil spatial information for data scarce areas such as West Africa. Such information could ... -
Dimensioning Branched Water Distribution Networks for Agriculture
Costa Pedroso, Rui Miguel (2014-05-26)The implementation of water distribution networks for irrigation represents an important investment for the development of many countries and for food security. These investments are mostly executed based solely on engineering ... -
Direct use of urine as fertilizer: potential risks of loading pharmaceuticals and hormones to field crops
Arias Escobar, Maria Alejandra (2019-04-11)Ecological sanitation or Ecosan is an alternative approach to avoid the disadvantages of conventional water-based sanitation systems. This approach, based on ecosystem functioning and the closure of material flow cycles, ... -
Dissecting Class A Scavenger Receptor Mediated Cell Adhesion and Lipoprotein Internalization
Kosswig, Ninetta (2003)Macrophage Class A scavenger receptors (SR-A) are trimeric transmembrane glycoproteins that can bind a variety of ligands including modified lipoproteins and bacterial products. Through its ability to internalize these ... -
Dissecting rhizobacteria-induced systemic resistance in tomato against Meloidogyne incognita: The first step using molecular tools
Silvestre Garcia, Kerstin (2007)Two rhizobacteria with known ability to induce systemic resistance against different soilborne pathogens were studied in split-root experiments for their ability to induce systemic resistance against the root-knot nematode ... -
Disseminating sustainable intensification practices: Empirical evidence from Ghana
Mellon Bedi, Shaibu (2022-06-02)Adoption of sustainable intensification (SI) of agricultural practices is essential for increasing food production in more sustainable way. Dis-adoption of agricultural technologies is pervasive among smallholder farmers ... -
Distribution and molecular characterization of aflatoxin-producing and nonproducing isolates of Aspergillus section Flavi for biological control of aflatoxin contamination in maize in Nigeria
Donner, Matthias (2009-03-10)Fungal communities in soils of Nigerian maize fields were examined to determine distributions of aflatoxin-producing fungi and to identify endemic atoxigenic strains of potential value as biological control agents for ... -
Distribution, Population Dynamics and Sustainable Management of Plant-Parasitic Nematodes Associated with Cut-Flowers in Ethiopia
Meressa, Beira Hailu (2014-09-12)Plant-parasitic nematodes are a growing concern for the floriculture industry in Ethiopia. Two surveys were conducted during the wet season (August to September 2011) and dry season (April to May 2012) to assess the incidence ... -
Distributions-, Transport- und Lagerungsmodell (DTL-Modell) zur Prognose des Frischeverlustes kühlbedürftiger Lebensmittel
Lettmann, Thomas (2007)Die vorliegende Arbeit hatte zum Ziel, Zusammenhänge zwischen Schwankungen der Umgebungstemperatur eines Produktes in der Kühlkette vom point of sale bis zur Kühlschranklagerung im Haushalt mit Hilfe eines Simulationsmodells ... -
Diversity of Stingless Bees in Bamenda Afromontane Forests – Cameroon: Nest architecture, Behaviour and Labour calendar
Njoya, Moses Tita Mogho (2010-01-20)Until now almost nothing was known of invertebrates such as wild bees in the Bamenda highland forest region in Cameroon. This study focuses on honey producing bee species which do not possess functional stings. The diversity ... -
Dormancy in temperate fruit trees - Perspectives for farming in a changing climate
Fernández Collao, Eduardo (2021-05-26)Deciduous fruit trees, which originated in temperate climates, exhibit an inactive period (i.e. dormancy) between late autumn and early spring. This period allows trees to endure the severe winter temperatures usually ... -
Drinking behaviour of llamas (Lama glama) and horses (Equus caballus) in response to saline drinking water
Enke, Nick (2023-03-24)Saline drinking water can play an important role in the nutrition of domestic animals, either through the salinization of natural drinking water sources or the intentional application as part of rehydration therapy after ... -
Drivers of change, adaptation and resilience of agricultural systems facing increased salinity intrusion in deltaic coastal areas of Vietnam
Nguyen, Minh Tu (2019-02-19)This PhD research aimed to examine historical and present drivers of agricultural changes in the Mekong (MKD) and Red River (RRD) deltas in Vietnam since 1975 as well as explore adaptation pathways and resilience of ... -
Drying front formation in topmost soil layers as evaporative restraint: Non-invasive monitoring by magnetic resonance and numerical simulation
Merz, Steffen (2017-04-04)Prediction of soil moisture changes on large scales is of various interests with regard to water resources management. Within this PhD work, different Magnetic Resonance (MR) concepts/apparatus and sequences were applied ... -
Durchflußzytometrische Detektion von Adrenocorticotropem Hormon in humanen Leukozytenpopulationen unter leistungsphysiologischen Kulturbedingungen
Linscheid, Karl Peter (2003)In Analogie zur systemischen Streßreaktion beschreibt die zelluläre Leistungsphysiologie Anpassungsmechanismen gegenüber belastenden Umweltfaktoren im mikroskopischen Maßstab. Neuropeptide aus Proopiomelanocortin, die in ... -
The dynamics of dietary change of transitional food systems in tropical forest areas of Southeast Asia: The contemporary and traditional food system of the Katu in the Sekong Province, Lao PDR
Krahn, Jutta (2005)From a nutritional point of view, this thesis started with the hypothesis that Laos is lacking a food security concept which sufficiently responds to the country’s unique cultural and biological resources, and as such to ... -
Dynamics of multiple elements in litter decomposition under various disturbances
Zhuang, Liyan (2023-09-29)Both artificial disturbance and climate change regimes can strongly affect soil carbon (C) sequestration and nutrient dynamics through decomposition processes of above- and belowground residues in terrestrial ecosystems. ... -
Dynamics of nitrogen and phosphorus under the impact of climate change and agricultural land use in the West African Sudan Savannah
Amouzou, Kokou Adambounou (2018-01-16)Changing climate and agricultural land-use dynamics seriously challenge the future of cropping in the West African Dry Savannah, and, in turn, the livelihoods and food security of rural populations. Current production ... -
Dynamik des spezifisch gebundenen Ammoniums unter Einfluss der Fruchtfolge und der Wurzelarchitektur landwirtschaftlicher Nutzpflanzen
Beuters, Patrick (2014-06-24)Ziel der vorliegenden Arbeit war es, den Beitrag des im Unterboden spezifisch gebundenen Ammoniums (spez. geb. NH<sub>4</sub><sup>+</sup>) für die Stickstoffernährung von Nutzpflanzen zu erfassen. Dazu wurden Einflussfaktoren ...