E-Dissertationen: E-Dissertationen: Recent submissions
Now showing items 481-500 of 1118
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Effects of heat and drought stress on cereal crops across spatial scales
(2017-02-10)The production of cereal crops is increasingly influenced by heat and drought stress. Despite the typical small-scale sub-regional variability of these stresses, impacts on yields are also of concern at larger regional to ... -
Global mRNA and miRNA transcriptome profiling of peripheral blood mononuclear cells to investigate the host immunogenetic response to PRRSV vaccination in pigs
(2017-01-20)This dissertation aims to identify the candidate genes of the functional network of host immune response to porcine reproductive and respiratory syndrome virus (PRRSV) vaccine in pigs; to explore the breed differences on ... -
Prototypenentwicklung eines solaren Trockners für holzartige Biomasse
(2017-01-24)Eine energieeffiziente Verbrennung von Holz ist grundsätzlich nur möglich, wenn die Biomasse einen adäquat niedrigen Wassergehalt aufweist. Zur Aufbereitung der standorteigenen Biomasse aus Obstbaumplantagen wurde an der ... -
Genetic variation of traits related to salt stress response in Wheat (Triticum aestivum L.)
(2017-01-24)Salinity is one of the most severe abiotic stresses perceived by plants, and is continuously increasing due to climatic change and poor irrigation management practices. It is currently affecting ~800 million hectares of ... -
Urban green spaces enhance carbon sequestration and conserve biodiversity in cities of the Global South: case of Kumasi, Ghana
(2017-01-24)Urbanization has the propensity to alter ecosystems, enervate ecosystem function and possibly jeopardise human wellbeing. While adequate integration of nature into the city landscape can pragmatically ameliorate urban ... -
Effects of different feeding regimes applied during rearing of dairy calves: circulating adiponectin and insulin sensitivity in early life and around the first lactation
(2016-12-20)Metabolic programming is defined as an early stimulus with long term effect. In dairy cows, feeding in the preweaning period has long term effects on later milk production. However, the influence on metabolic and endocrine ... -
Imperfect competition in an oligopsonistic setting: A study on the German raw milk market
(2016-11-22)Agricultural markets are best characterized as oligopsonistic markets; usually many farmers face only few manufacturers. The raw milk market in Germany exhibits a high concentration of dairy processors opposed to a large ... -
Social interactions, aspirations, and agricultural innovations: Linkages with income and food security in rural Ethiopia
(2016-11-09)The persistence of poverty in some parts of the society across the globe inspired recent studies in development economics to embrace the use of multidisciplinary tools and concepts to better understand the situation of the ... -
Ausgewählte Einflussfaktoren auf den Nützlingseinsatz gegen Thrips und Blattläuse im ökologischen Topfkräuteranbau unter Glas
(2016-11-07)Bislang liegen nicht ausreichend wissenschaftliche Daten vor, um effiziente Nützlingsmanagementsysteme im Topfkräuteranbau zu realisieren. Der Fokus dieser Arbeit lag daher darin, den Einfluss der biotischen und abiotischen ... -
Statistical relational learning of semantic models and grammar rules for 3D building reconstruction from 3D point clouds
(2016-11-04)Formal grammars are well suited for the estimation of models with an a-priori unknown number of parameters such as buildings and have proven their worth for 3D modeling and reconstruction of cities. However, the generation ... -
Functional studies of microRNA 17-92 cluster members in bovine granulosa cells and oocyte maturation
(2016-10-13)Dynamic transcript of genes expression are believed to occur during follicular development and oocyte maturation, which one way or the other is regulated by a post-transcriptional modifier, namely microRNA. In the previous ... -
Integration von hyperspektralen Merkmalen und 3D-Geometrie für die Klassifikation von Pflanzenstressprozessen
(2016-10-24)Hyperspektrale Kameras eröffnen neue Zugänge zur nicht-invasiven Beobachtung physiologischer Prozesse in der Pflanze, die zu einem tieferen Verständnis von Stresstoleranz und Ertragsbildung beitragen können, wenn es gelingt ... -
Large-scale land acquisitions for agricultural investments in Ghana - implications for land markets and smallholder farmers
(2016-10-17)The participation of large-scale agricultural investors in African land transactions raises concerns about the impacts on a rather hitherto local and smallholder dominated land market. However, there is still limited ... -
Methods for assimilating remotely-sensed water storage changes into hydrological models
(2016-10-17)Understanding physical processes within the water cycle is a challenging issue that requires merging information from various disciplines. The Gravity Recovery And Climate Experiment (GRACE) mission provides a unique ... -
Hochwasserrisiko und Immobilienwerte: Zum Einfluss der Lage in überschwemmungs-gefährdeten Gebieten sowie zu den Folgen von Überschwemmungsereignissen auf den Verkehrswert von Wohnimmobilien
(2016-10-13)Aufgrund des fortschreitenden Klimawandels und dem weiteren Anstieg der Flächenversiegelung ist auch in Deutschland mit einer Zunahme extremer Hochwasserereignisse zu rechnen. Ein Anstieg des Hochwasserrisikos stellt ... -
Entwicklung einer direkten Georeferenzierungseinheit zur Positions- und Orientierungsbestimmung leichter UAVs in Echtzeit
(2016-09-27)Seit einigen Jahren werden im Bereich der Geodäsie immer häufiger auch Unmanned Aerial Vehicles (UAVs) als kinematische Trägerplattformen eingesetzt. Dazu werden diese mit objekterfassender Sensorik, wie z.B. Digitalkameras ... -
Policies for food security in India: an assessment of current policies and reform options
(2016-09-27)Ever since India’s independence large-scale government interventions have been drastically shaping the landscape of the food grain sector. From a famine-prone country, India has become a large exporter and stockholder, ... -
The effect of sulfur deficiency in pea (Pisum sativum) on factors related to nitrogen fixation and on sulfate transporters
(2016-11-29)Sulfur has a vital role in the plant life cycle. S deficiency reduces optimal yield and quality in legumes which lead to a reduction in nutritional value of food and feed. S deficiency also alters the symbiotic interaction ... -
Die Relevanz von Prüfmechanismen in der Lebensmittelwirtschaft: Eine empirische Untersuchung über Qualitätsstandards
(2016-08-29)Rohwaren werden in den Ketten der Agrar- und Ernährungswirtschaft international beschafft. Mangelhafte Transparenz innerhalb der Wertschöpfungskette ist kennzeichnend für die Beschaffungssituation, mit der viele Unternehmen ... -
Analysis of biomixtures to determine the fate of pesticides
(2016-08-03)Worldwide, water contamination from agricultural use of pesticides has received increasing attention within the last decades. In general, sources of pesticide water pollution are categorized into diffuse (indirect) and ...
