E-Dissertationen: E-Dissertationen: Neuzugänge
Anzeige der Dokumente 741-760 von 1182
-
Supplementation of a rumen-protected conjugated linoleic acid mixture (cis-9, trans-11; trans-10, cis-12) to early lactation dairy cows: effects on feed intake and performance
(2013-06-07)Conjugated linoleic acids (CLA) are geometric and positional isomers of linoleic acid with conjugated double bonds. <em>Cis</em>-9, <em>trans</em>-11 and <em>trans</em>-10, <em>cis</em>-12 CLA are the two most intensively ... -
Finding spectral features for the early identification of biotic stress in plants
(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 ... -
Nutrient recovery from human urine: Treatment options and reuse potential
(2013-05-17)A “No Mix” sanitation system was installed in a dormitory at the University of CanTho in South Vietnam, with the objective of recycling nutrients from source separated wastewater. The “Yellow Water” treatment plant was ... -
Biology, Monitoring and Management of Economically Important Wireworm Species (Coleoptera: Elateridae) in Organic Farming
(2013-05-07)Wireworms, the larvae of click beetle species <em>Agriotes lineatus, A. obscurus </em>and<em> A. sputator</em> are serious pests with increasing importance for several field crops. Since synthetic insecticides are prohibited ... -
Association Mapping of QTLs for Fusarium Head Blight Tolerance in a Structured Barley Population
(2013-05-06)Fusarium head blight (FHB) disease is one of the most challenging crop diseases; it reduces kernel weight, cause significant yield losses and quality reductions that may occur if fungal mycotoxins, especially deoxynivalenol ... -
Einfluss langjährig differenzierter organischer Düngung auf S-Bindungsformen und S-Nachlieferung einer Parabraunerde aus Löß
(2013-04-16)Für eine optimale Ernährung der Pflanze ist es wichtig, dass der Boden die notwendigen Nährstoffe zum richtigen Zeitpunkt in einer verfügbaren Form zur Verfügung stellt. Dabei spielt die Fähigkeit des Bodens, die Nährstoffe ... -
Morphological reflectors and molecular predictors of preimplantation developmental competence in bovine oocytes and embryos
(2013-03-27)The efficiency of in vitro production (IVP) of bovine embryos still remains low, reaching blastocyst rates between 25 and 35 %. Accordingly, the necessity to define reliable predictors for developmental competence is ... -
Nurturing Interdisciplinarity in Agricultural Research through Capacity-Building: A case study of ZEF’s Uzbekistan Project
(2013-03-08)Interdisciplinary research is one of the key strategies of Center for Development Research (German: Zentrum für Entwicklungsforschung -ZEF) of Bonn University. ZEF claims to be one of the top centers of excellence in ... -
Risk based approach towards more sustainability in European pig production
(2013-02-20)Major aim of this thesis was to demonstrate how the use of a HACCP concept, a risk based approach, improves the sustainability of added value chains in European pig production. The thesis is featured as a pseudo-cumulative ... -
Vergleich verschiedener Anbausysteme des Organischen Landbaus für Mais und zwei Leguminosenarten
(2013-02-12)In den Jahren 1995 bis 1998 wurden am Institut für Agrarbiologie der EMBRAPA in Seropédica, Rio de Janeiro, Brasilien, Feldversuche zum gemeinsamen Anbau von Mais und Körnerleguminosen unter den Anbaubedingungen des ... -
Effects of 137Cs and 90Sr on structure and functional aspects of the microflora in agricultural used soils
(2013-03-01)At long sight <sup>137</sup>Cs and <sup>90</sup>Sr are the main radionuclides responsible for the contamination of agricultural soils due to core melts in nuclear power plants such as Chernobyl or Fukushima. Once deposited ... -
Compost and residues from biogas plant as potting substrates for salt-tolerant and salt-sensitive plants
(2013-01-10)Compost and residues from biogas plant have been increasingly recognized as potting substrates in horticulture. To investigate the suitability of both materials to grow salt tolerant plants in 2010 a pot experiment was ... -
Coupled hydrogeophysical inversion for soil hydraulic property estimation from time-lapse geophysical data
(2012-12-21)Good knowledge of the hydraulic properties of the vadose zone is important for understanding water flow and solute transport processes therein. This can help to promote sustainable use and mitigate anthropogenic threats ... -
Assessment of Land Degradation Patterns in Western Kenya: Implications for Restoration and Rehabilitation
(2012-12-15)Land degradation remains a major threat to the provision of environmental services and the ability of smallholder farmers to meet the growing demand for food. Understanding patterns of land degradation is therefore a central ... -
Nutritional Status of Trauma Patients with Disorders in Wound Healing: Assessment and Effects of Nutrient Supplementation
(2012-10-31)Disorders in wound healing (DWH) are severe post-surgical complications in trauma patients, unfortunately, the reasons being not completely understood. However, nutrition is hypothesised as an important factor for proper ... -
The YES assay as a tool to analyse endocrine disruptors in different matrices in Vietnam
(2012-11-16)Endocrine disrupting compounds (EDCs) or endocrine disruptors have been a global concern for many years due to their negative impact on wildlife and human health. The main sources of EDCs in the environment are humans and ... -
Effectiveness of soil and water conservation measures for land restoration in the Wello area, northern Ethiopian highlands
(2012-11-12)Soil-erosion-induced land degradation is a great challenge in the Ethiopian highlands. Consequently, the government has invested in soil and water conservation (SWC) measures, mainly farmland terracing and exclosure of ... -
Economic incentives of the WTO dispute settlement system with an empirical focus on the agro-food sector
(2012-11-14)The thesis contributes to the understanding of the drivers in countries’ decision to adjudicate trade issues under the Dispute Settlement Mechanism (DSM) of the World Trade Organization (WTO). The DSM is a rules-based ... -
Use of natural abundance of δ15N as indicator of long-term N management on grassland farms: An estimation of long-term N efficiency
(2012-10-12)Productive agroecosystems usually rely on the addition of Nitrogen (N) generally as chemical synthetic N fertilizers and animal excreta, but inefficient N management nitrogen losses contribute to environmental pollution, ... -
Tractable Learning for a Class of Global Discriminative Models for Context Sensitive Image Interpretation
(2012-10-24)We propose a class of conditional Markov random fields for context sensitive image interpretation. The proposed class includes multi-class models with affine log-potential functions and with pairwise label interactions ...
