E-Dissertationen: Auflistung E-Dissertationen nach Titel
Anzeige der Dokumente 698-717 von 1013
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Oberflächen als Übertragungswege für Salmonellen in der Fleischgewinnung beim Schwein
Dünnebier, Katja (2006)Gegenstand der vorliegenden Arbeit ist die Darstellung einer möglichen Beteiligung Produkt berührender Oberflächen der Fleischgewinnung beim Schwein an der Verteilung von Salmonellen über die Prozesslinie hinweg. Über einen ... -
Occasional direct-seeding of grain legumes in Organic Agriculture in Germany and Brazil: fertilisation with P and S & weed control with natural herbicides
Giepen, Michael (2018-02-13)The aim of this work was to test strategies, which improve nutrient supply and weed control in occasional direct-seeded (DS) grain legumes in Organic Agriculture. The effect of intra-row fertilisation of rock phosphate ... -
On High Performance Computing in Geodesy: Applications in Global Gravity Field Determination
Brockmann, Jan Martin (2014-12-08)Autonomously working sensor platforms deliver an increasing amount of precise data sets, which are often usable in geodetic applications. Due to the volume and quality, models determined from the data can be parameterized ... -
On Monte Carlo methods with applications to the current satellite gravity missions
Alkhatib, Hamza (2007)Large-scaled least squares problems require tailored numerical techniques to overcome the computational burden. For these types of problems iterative strategies are suitable because of their flexibility and effectiveness. ... -
On the theory and application of model misspecification tests in geodesy
Kargoll, Boris (2007)Many geodetic testing problems concerning parametric hypotheses may be formulated within the framework of testing linear constraints imposed on a linear Gauss-Markov model. Although geodetic standard tests for such problems ... -
Ontogenetic development of the IGF-system and leptin in offspring of sows fed with gestation diets differing in protein content
Steinhoff-Ooster, Anika (2012-04-16)The aim of this dissertation was to characterize leptin and the different components of the IGF-system in offspring of sows fed with different protein contents throughout pregnancy and to ascertain long term consequences ... -
The Opportunity Cost of Financing Oportunidades: A General Equilibrium Assessment for Poverty Reduction in Mexico
Viveros Añorve, José Luis (2015-03-18)Despite the fact that Mexico has achieved macroeconomic stability after the financial crisis in 1995, it has failed to generate sustained high economic growth rates and to substantially reduce poverty and income inequality. ... -
Optimierung der Temperaturüberwachung von nicht aktiv gekühlten Pharma Supply Chains
Mousavi Rizi, Seyed Amir Hossein (2015-12-03)Das Ziel der vorliegenden Arbeit war die Entwicklung einer Methode zur Optimierung der Temperaturüberwachung in nicht aktiv gekühlten Pharma Supply Chains. Dabei galt es zunächst ein Anforderungsprofil zu erstellen, welches ... -
Optimierung von Wachstum und Ertrag (Süßstoffbildung) bei Stevia rebaudiana Bertoni unter mitteleuropäischen Standortbedingungen
Mora Zabala, Uriel (2011-09-16)Um Wachstum und Süßstoffertrag von <em>Stevia rebaudiana</em> in den Klimabedingungen der gemäßigten Breiten Mitteleuropas zu verbessern, wurde diese Studie im Bereich Gartenbauwissenschaften an der Universität Bonn ... -
Optimisation of nitrogen management after harvest of the main crop by growing turnips [Brassica rapa L. ssp. rapifera (Metzg.) Sinsk.] as a catch crop and field vegetable
Kotnik, Tomaž (2006)The objective of the present study was to investigate whether the short growing season after the harvest of potatoes (PO) and faba beans (FB) enables to grow a marketable crop that can at the same time reduce soil nitrate ... -
Optimising nitrogen use in dairy farming: Evaluation of ruminal crude protein degradation and protein value of forages
Edmunds, Bronwyn Lee (2012-01-16)A major goal of modern dairy farming is to decrease nitrogen inputs and increase efficiency of nitrogen utilisation by the dairy cow in order to minimise environmental pollution and save on expensive nitrogen supplements. ... -
Optimization of point grids in regional satellite gravity analysis using a Bayesian approach
Schall, Judith (2020-03-25)The subject of this thesis is the global and regional gravity field determination from GOCE data using the short arc approach. The focus is on the extension of the regional method regarding an adaption of the model resolution ... -
Options for reuse of nutrients from waste water in the Mekong Delta, Vietnam
Arnold, Ute (2010-12-19)Different options for wastewater treatment in the Mekong Delta were studied to recycle nutrients efficiently for later use in agriculture. <br /> Due to an even distribution of nutrients between animal and human excrements ... -
Options for sustainable agricultural intensification in maize mixed farming systems: explorative ex-ante assessment using multi-agent system simulation
Mponela, Powell (2021-02-17)Nutrient depletion is a major limiting factor to agricultural sustainability in cereal dominated smallholder farming systems in Africa where over 80% of arable land is unsuitable to support primary productivity. This ... -
Options to improve irrigation efficiency and productivity under rotational delivery schedule, a bottom-up approach applied at canal irrigation scheme in Pakistan
Sajid, Imran (2022-12-06)In Punjab, Pakistan, the Warabandi principle guides the distribution of surface water over a network of canals providing farmers with limited water in proportion to land size in a fixed 7-days rotation. Current problems ... -
Ökologisches Entwicklungskonzept Hellenbrucher Bach (Kreis Mettmann, NRW)
Huerkamp, Petra (2001)In der vorliegenden Arbeit wird ein ökologisches Entwicklungskonzept für einen Mittelgebirgsbach, den Hellenbrucher Bach im Kreis Mettmann (NRW) vorgestellt. Die Aufstellung des Konzepts ist auf Grundlage allgemeiner ... -
Ökonomische Auswirkungen von Politiken zur Umsetzung der Wasserrahmenrichtlinie auf die Schweinehaltung im Münsterland
Garbert, Johanna (2013-10-31)Die Landwirtschaft ist über die Ausbringung von Dünger Hauptverursacher diffuser Nährstoffeinträge in deutsche Gewässer. Sie ist somit mitverantwortlich dafür, dass das erklärte Ziel eines „guten ökologischen Zustands“ ... -
Ökonomisches Entscheidungstool zur Wohnbaulandentwicklung: Wirtschaftlichkeitsanalysen potenzieller Wohnbauflächen auf der Ebene des Flächennutzungsplanes
Frielinghaus, Benedikt (2011-05-18)Die aktuellen Trends der Siedlungsflächenentwicklung führen in Verbindung mit der demographischen Entwicklung in Deutschland zu hohen Anforderungen an die langfristige Wirtschaftlichkeit von Wohnbauflächen. Da vor allem ... -
Partitioning Water Vapor Fluxes by the Use of Their Water Stable Isotopologues: From the Lab to the Field
Quade, Maria Elisabeth (2019-09-04)Water stable isotopes are powerful tracers for partitioning of the terrestrial ecosystem water vapor fluxes into process-based components, i.e. evapotranspiration (<em>ET</em>) into soil evaporation (<em>E</em>) and plant ... -
Pastoral Practices, Economics, and Institutions of Sustainable Rangeland Management in Kenya
Kihiu, Evelyne Nyathira (2016-04-08)Rangelands contribute greater value than is generally acknowledged. The ecosystems provide a significant portion of the world’s biodiversity and culturally diverse habitats and are also of great ecological and economic ...