E-Dissertationen: Browsing E-Dissertationen by Title
Now showing items 392-411 of 1027
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Expression analysis of regulatory MicroRNA in bovine cumulus oocyte complex and preimplantation embryos
Abd El Naby, Walaa Slouma Hamouda (2012-06-01)MicroRNAs (miRNAs) are small non coding endogenous molecules which participate in gene regulation post transcriptionally. These small RNAs are shown to be involved in a wide range of biological processes including development, ... -
Expression of genes related to energy balance in adipose tissue of dairy cattle: effects of SCFA on mRNA abundance as quantified by qPCR and relevance of appropriate selection of reference genes
Hosseini, Afshin (2010-11-05)The aim of this thesis was to study the effect of propionate (C3) and β-hydroxybutyrate (BHB) on the mRNA abundance of reference genes (RGs) and of the genes of interest (GOI) related to energy balance, by short term ... -
Extreme weather events in Sudan Savanna Region of West Africa: agricultural impacts and adaptation
Boansi, David (2019-11-14)Climate and weather extremes generally lead to crop yield, income and consumption losses. Despite their occurrence at the farm level, very little has so far been done to empirically assess weather risks and their effects ... -
Extrinsic Calibration and Ego-Motion Estimation for Mobile Multi-Sensor Systems
Huang, Kaihong (2018-12-20)Autonomous robots and vehicles are often equipped with multiple sensors to perform vital tasks such as localization or mapping. The joint system of various sensors with different sensing modalities can often provide better ... -
Factorial Approach to Determining Energy and Protein Requirements of Gilthead seabream (Sparus aurata) for Optimal Efficiency of Production
Lupatsch, Ingrid (2004)Requirements for dietary energy and protein in growing fish can be quantified using the factorial approach which assumes that the requirement is the sum of growth and maintenance. Thus dietary intake can be calculated using ... -
Fahrspur- und Routenplanung für teilautonome, GNSS-gestützte Landmaschinen
Sabelhaus, Dennis (2016-02-19)Die Entwicklungen in der Landwirtschaft sind durch Automatisierung und Informationstechnologie geprägt. Parallelfahrsysteme sind zu einem wichtigen Werkzeug geworden, um die Maschine mit einer Spurgenauigkeit von wenigen ... -
Farm Animal Welfare: Measurement and Compliance
Annen, Dominic Norbert (2012-07-18)The present study is divided into two main parts. The <i>first</i> main part aims at evaluating the conception of and compliance with legal and voluntary husbandry standards on Austrian and German pig fattening and cattle ... -
Farm-level impacts of policy instruments targeting plant protection products
Böcker, Thomas (2018-09-25)Plant protection is necessary to achieve high yields with high quality. The application of pesticides, however, leads to negative external effects to the environment. Society calls for stricter agri-environmental instruments ... -
Farmer Innovation in Rural Ghana: Determinants, Impacts and Identification
Tambo, Justice Akpene (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 ... -
Fate of veterinary pharmaceuticals in soil: An experimental and numerical study on the mobility, sorption and transformation of sulfadiazine
Wehrhan, Anne (2006)Among other sulfonamides sulfadiazine (SDZ) is a widely used antimicrobial substance in intensive livestock production to prevent and treat diseases. Up to 40 % of the administered sulfonamides are eliminated as microbial ... -
Feldversuche zur Erfassung des Transportverhaltens von gelösten und partikulären Tracern mittels Multitracing-Technik in einem schluffigen Boden
Burkhardt, Michael (2003)Die bodenphysikalische Heterogenität in strukturierten Böden und die Niederschlagintensität sind wichtige Faktoren für den gelösten und partikulären Transport durch die ungesättigte Bodenzone in das Grund- oder Oberflächenwasser. ... -
Finding spectral features for the early identification of biotic stress in plants
Rumpf, Till (2013-07-08)Early detection of biotic stress in plants is vital for precision crop protection, but hard to achieve. Prediction of plant diseases or weeds at an early stage has significant influence on the extent and effectiveness of ... -
Flavonoidgehalt in der Muttermilch nach Intervention mit einem Sojagetränk oder entkoffeiniertem schwarzen Tee
Meinardus, Pamela (2012-07-13)Viele in vivo Studien zeigen, dass Flavonoide (Isoflavone und Flavanole) ein breites Wirkspektrum mit einem positiven Einfluss auf diverse Stoffwechselvorgänge besitzen. So können sie zum Beispiel aufgrund ihrer antioxidativen ... -
Flächenentwicklung der Kalkmagerrasen im nordrhein-westfälischen Teil der Eifel seit 1900 und ihr aktueller Zustand
Trein, Linda (2015-03-04)In der vorliegenden Arbeit wird die Flächenentwicklung der Kalkmagerrasen der nordrhein-westfälischen Eifel in den letzten 100 Jahren dargestellt. Aktuell kommen im gesamten Untersuchungsraum 549 Kalkmagerrasen mit einer ... -
Fluorescence-based systems for detection of abiotic stresses on horticultural crops
Kautz, Burkard (2016-05-10)The main objective of this thesis was to assess the impact of economically important abiotic stresses on the plant physiology using non-destructive fluorescence indices, and to evaluate the potential use of the sensor ... -
Folate, vitamin B6, and vitamin B12 status in European adolescents: associations with homocysteine as well as communicable and non-communicable factors
Al-Tahan, Jasmin (2010-07-06)Adolescence implies important psychological, social, and physiological changes. Apart from the first year of life, both energy and nutrient requirements are greatest during adolescence. To ensure physiological growth during ... -
Food price volatility: the role of stocks and trade
Kornher, Lukas (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. ... -
Food Security Monitoring for Developing Countries in the Age of Big Data
Weber, Regine (2020-02-10)Approximately 817 million people are currently estimated to be undernourished and 85 million people across 46 countries are estimated to be in need of food emergency assistance over the course of 2019. Conflict, migration ... -
Food waste reduction concepts for stakeholders in the food supply chain and auxiliary organizations
Strotmann, Christina (2019-09-10)The objective of this thesis was to develop concepts to support the reduction of food waste in the food sector. The concepts are targeted to private companies, such as manufacturing businesses, retailers, and large-scale ... -
Foreign Direct Investment in the Agribusiness Sector
Adenäuer, Lucie (2011-06-10)Foreign Direct Investment (FDI) has increased strongly since 2003, especially into the agribusiness sector. This development has rarely been analysed in recent literature. Therefore, this thesis aims at analysing different ...