E-Dissertationen: E-Dissertationen: Neuzugänge
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Plant parameters for the marker and trait assisted selection of drought stress tolerance in barley (Hordeum vulgare ssp. vulgare)
(2015-12-03)The scarcity of water resources is becoming one of the most devastating stress factors for plants, which elicits a variety of responses. Therefore, effective screening techniques are necessary to understand the mechanism ... -
Micronutrient status in morbidly obese patients undergoing bariatric surgery - assessment and intervention
(2015-10-30)Although the benefits of bariatric surgery have been frequently proven, less is known about the micronutrient status of morbidly obese patients undergoing bariatric surgery. A deficiency in vitamin D pre- and postoperatively ... -
Farmer Innovation in Rural Ghana: Determinants, Impacts and Identification
(2015-11-23)Innovation is essential for agricultural and economic development, especially in today’s rapidly changing global environment. While farmers have been recognised as one of the key sources of innovation, many studies on ... -
Ecological interactions of Fusarium species and the meal beetle Tenebrio molitor
(2015-10-14)Contamination of stored grains by moulds and their mycotoxins results in quality and nutritional reduction. Ingestion of contaminated products and feed poses a significant hazard to human and animal health. The moulds ... -
Untersuchungen zur Eignung des „Auerochsen" für Ganzjahresbeweidung: Aspekte der Physiologie und Habitatnutzung
(2015-10-14)Der Einsatz großer Pflanzenfresser in extensiver Ganzjahresbeweidung ist ein viel diskutiertes Konzept. Die mit Herbivorie einhergehenden, natürlich ablaufenden Prozesse sollen unterstützt werden, um eine maximale Biodiversität ... -
Untersuchung der Kälteanpassungsmechanismen bakterieller Zellmembranen
(2015-10-14)Die Lebensmittelindustrie versucht stetig, die Haltbarkeit ihrer Produkte zu verlängern, um ihre Produktivität zu optimieren. Dafür verwendet sie auch Kühlungs- und Gefriertechniken. Durch den Einsatz dieser Techniken ... -
Convex Optimization for Inequality Constrained Adjustment Problems
(2015-10-14)Whenever a certain function shall be minimized (e.g., a sum of squared residuals) or maximized (e.g., profit) optimization methods are applied. If in addition prior knowledge about some of the parameters can be expressed ... -
Cellular energy supply and aging in dairy cows: Characterization of different physiological states and impact of diet-induced over-condition
(2015-09-24)Lactation in dairy cows is accompanied by dramatic changes in energy balance and thus requires the continued adaption of the key organs, namely adipose tissue (AT), liver, and mammary gland to the varying conditions. The ... -
International Cooperation for the Conservation and Sustainable and Fair Use of Biodiversity
(2015-09-17)This thesis contributes to the modelling of intergovernmental cooperation for global biodiversity conservation and analyses multilateral cooperation on the genetic resource market. The inter- and transdisciplinary research ... -
Genome-wide association study for reproduction traits in maternal pig breeds
(2015-11-23)The number of piglets born alive (NBA) is one of the most important reproduction traits due to its influence on pig production efficiency. It was shown in several studies that NBA has an antagonistic relationship with later ... -
Food price volatility: the role of stocks and trade
(2015-10-14)After a period of relatively low international food price volatility since the 1970s, prices spiked in 2007/2008 and 2011. These international price changes transmitted to domestic markets where they generate extra volatility. ... -
Preferences for high-value agricultural products in developing countries: Demand analyses for livestock products in Vietnam
(2015-09-01)This thesis comprises three papers that aim to analyze demand for livestock products in Vietnam as a case study for preferences for high value agricultural products in developing countries. <br /> Chapter 2 is based on the ... -
Genetic and physiological factors of ozone tolerance in rice (Oryza sativa L.)
(2015-09-02)Intensive human activities have contributed to the increase of tropospheric ozone. Ozone is toxic to plants and causes serious damage to crop production and global food supply. Therefore it is necessary to adapt crops to ... -
The role of abiotic processes in the formation and degradation of gaseous nitrogen compounds in the soil
(2015-09-24)Soils are a major source of nitrogen (N) trace gases, especially of nitrous oxide (N<sub>2</sub>O) and nitric oxide (NO). The two microbial processes nitrification and denitrification are considered the major contributors ... -
The Prospects of Organic Farming in Bhutan
(2015-08-26)The potential harmful effects of conventional agriculture (CA) and the alleged multiple benefits of organic agriculture (OA) in conjunction with the prevalence of coherent conceptual linkage between the principles of OA ... -
Real-time quantification of oxygen isotope exchange between carbon dioxide and leaf/soil water in terrestrial ecosystems with laser-based spectroscopy
(2015-08-26)The oxygen isotope ratio of atmospheric carbon dioxide (δ<sup>18</sup>O-CO<sub>2</sub>) can be used to partition the gross fluxes of CO<sub>2</sub> in terrestrial ecosystems, such as soil respiration and plant assimilation, ... -
Analyse der Konfiguration bei der Approximation ungleichmäßig abgetasteter Oberflächen auf Basis von Nivellements und terrestrischen Laserscans
(2015-07-30)Seit einigen Jahren unterliegt der Bereich der Ingenieurgeodäsie einem starken Wandel, da sich diese Disziplin generell den stetig weiterentwickelnden, anwendungsbezogenen Problemstellungen widmet. Unter diesen Aspekten ... -
Ascorbate Metabolism in Rice (Oryza sativa L.) and its Implications for Tolerance against Zinc Deficiency
(2015-08-20)Rice is one of the most important staple crops worldwide and a growing world population will lead to an increasing demand for food in the upcoming years. Severe yield losses are threatening food security, caused by abiotic ... -
Gender- Differentiated Asset Dynamics in Bangladesh: Individual Adaptation and the Potential for Group Based Approaches in the Context of Climate Change
(2015-08-06)This dissertation examines the changes in intra household asset ownership induced by external events. The immediate coping mechanisms and long term adaptation strategies in response to climatic and non-climatic shocks and ... -
Impacts of Rural-urban Migration on Demographic Transition, Human Capital Investment and Agricultural Productivity in China’s Rural Areas
(2015-07-21)This dissertation focuses on the impacts of rural-urban migration on the rural areas in China. It consists of five chapters. <br /> The first chapter introduces the research problems and presents the framework for studying ...
