Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 1811-1830 of 5608
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Farmers, Peers, and Traders. Application of social networks in modern agricultural systems
(2020-04-30)Social networks can serve as an instrument to link agents with each other over space and time. The emerging pattern can display the flow of information, the diffusion of technology or the trade flow of products between all ... -
Farming systems and landscape context: effects on biodiversity and biocontrol
(2005-05-27)The intensification of agricultural practices and the increase of area under agricultural production, which was accompanied by a destruction of perennial habitats, made agriculture to one ... -
Farmland biodiversity and associated ecosystem services across tropical rural- urban landscapes
(2022-07-20)Driven by the unprecedented growth of human populations, cities all over the globe are expanding. Especially Asia and Africa are hotspots of current and future urbanization. As cities grow, they extend in area, sprawling ... -
Farmland heterogeneity effects on biodiversity, community traits and insect pollination
(2019-04-05)Agricultural intensification has led to severe biodiversity losses. One reason is the drastic reduction of (semi-)natural habitat, but there is also a global trend to reduced farmland heterogeneity due to larger field sizes ... -
Faseroptische Gemischbildungsanalyse in Otto-Motoren bei direkteinspritzenden Brennverfahren
(2005-01-12)The mixture formation process in gasoline direct injection engines is very complex and depends strongly on thermodynamic processes mainly induced by the engine geometrie. Most of the optical ... -
Fast inference in flexible high dimensional models of gene co-expression and genotype-gene expression interaction
(2025-03-20)As more high-throughput sequencing data is produced from ever-growing human cohorts, understanding human biology becomes a more and more quantitative and statistical task. Starting notably with the data made available in ... -
Fast methods for metagenomic sequence search and annotation
(2022-06-16)The past two decades have seen the development of metagenomics, the study of genes and genomes of multiple organisms simultaneously. In contrast to traditional genomic techniques, which require isolating and growing ... -
Fast STED Microscopy
(2010-02-12)The spatial resolution of optical far-field microscopes was hampered by diffraction until STED microscopy broke the diffraction limit. This thesis for the first time combines the high spatial ... -
Fast X-ray diffraction crystal size distribution analysis
(2018-09-11)Fast X-ray Diffraction Crystal Size Distribution analysis (FXD-CSD) constitutes a novel method to determine volume-based crystal size distributions (CSD) of crystalline powders or polycrystalline materials in the lower µm ... -
Fast, Three-Dimensional Fluorescence Imaging of Living Cells
(2022-01-21)This thesis focuses on multi-plane fluorescence microscopy for fast live-cell imaging. To improve the performance of multi-plane microscopy, I developed new image analysis methods. I used these methods to measure and analyze ... -
Fate of organic micropollutants in a karst aquifer system - Implications for sustainable raw water management
(2014-08-20)The fundamental understanding of karst aquifers is vital for the sustainable management of raw water quality and eventually the access to clean drinking water for up to one quarter of the world’s population. In order to ... -
Fatty acid oxidizing enzymes in Lobosphaera incisa
(2018-04-23)Green microalgae are a model in biotechnology because of their capacity to accumulate neutral lipids, as part of a general lipid remodeling mechanism under stress. The species L. incisa is of special interest for its unique ... -
Fatty acid patterns of soil decomposers and predators as affected by plant species richness
(2018-05-24)Relationships between organisms in the soil are very important to control the equilibrium of an ecosystem. Many factors and conditions play a crucial role for the development and functioning of decomposers and predators, ... -
Fault zones in potential geothermal reservoir rocks in the Upper Rhine Graben: Characteristics, permeability implications, and numerical stress field models
(2016-07-26)Fault zones in carbonate successions of the Middle Triassic Muschelkalk are potential target structures of hydrothermal projects in the Upper Rhine Graben (URG). A mixed-method approach was applied to make assumptions on ... -
Feeding competition in wild female Assamese macaques (Macaca assamensis)
(2014-09-30)Food is one of the most important resources animals compete over and assessing the way individuals compete over such limiting resources is fundamental to our understanding of the adaptations of living organisms. In mammals, ... -
Feeding Interactions and Their Relevance to Biodiversity under Global Change
(2017-03-21)This dissertation focuses on the effect of multiple global change drivers on feeding interaction strength and biodiversity loss. The mechanisms of their influences on food webs are demonstrated by simple food chain motifs ... -
Feinkartierung humoraler Immunantworten von Makaken nach Immunisierung und/oder viraler Infektion mittels Peptid - Microarray
(2014-10-02)The aim of this study was to map humoral immune responses in rhesus macaques (RM) which had either been immunized and/or infected with different viruses. This was achieved by screening serum samples using peptide microarrays. ... -
Feldfrüchte für die Biogaserzeugung – Index der relativen Anbauwürdigkeit (IrA)
(2020-12-18)Biogas plants that are mainly fed with maize, often show a lack of trace elements, especially of cobalt and nickel. The reason for this is the low absorption capacity of maize of these process-relevant trace elements. To ... -
Feldinduzierte Tieftemperaturoxidation nanoskaliger Metall- und Halbleiterstrukturen
(2008-12-04)At the surface of almost all metals and semiconductors oxide formation occurs when exposed to atmosphere. The oxidation reaction proceeds along a number of partial reaction steps with the ... -
Female social relationships among wild Assemese macaques (Macaca assamensis)
(2014-07-14)It has been repeatedly shown that strong, affiliative social relationships (hereafter “social relationships”) are extremely important for human health and well-being. Increasingly there is evidence that non-human species ...