Now showing items 1-20 of 5163
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Synthesis of Artificial Nucleotides for Biological Applications
(2025-05-20)This thesis explores the synthesis of nucleotides, the building blocks of DNA and RNA, two essential molecules in living cells. One project focused on developing a more effective ligand for orotidine-5’-monophosphate ... -
Investigation of Nuclear Hyperfine Coupling in H2 Heterodimers Using Rotational Spectroscopy
(2025-05-20)Rotational spectroscopy of gas phase compounds is a powerful technique for structure determination through the unique moments of inertia of a molecular system. It is sensitive angular momentum coupling; therefore, complicated ... -
Effects of environmental change on grassland birds in the Central-Asian flyway through the annual cycle
(2025-05-20)Land use change is a significant driver of biodiversity loss, but its impacts have been largely studied with a particular focus on temperate regions and forest ecosystems. In this thesis, I used bird abundance, occurrence, ... -
The significance of chlorophyllous spores in the evolution and biogeography of ferns
(2025-05-15)Ferns, the second most diverse group of vascular plants globally, have evolved over millions of years colonizing diverse habitats across almost all continents. Ferns possess a suit of morphological and physiological traits ... -
Simulation-Based Data Fusion and Tracking
(2025-05-15)Autonomous systems ranging from self-driving cars and driver assistance systems, over autonomous vacuum cleaners to unmanned aerial vehicles rely on accurate perception of their surroundings to navigate and interact with ... -
Organic matter preservation in the presence of variable mineralogical matrices – clues to the interpretation of Precambrian biosignatures
(2025-05-09)Hydrothermal environments, such as terrestrial hot spring settings, harbored life on the early Earth. However, the scarcity of Precambrian rocks, particularly hydrothermal deposits, hinders the reconstruction of the ... -
Land Use Change in Papua, Indonesia – Assessing Deforestation Patterns and Predicting Future Hotspots of Habitat Loss to Inform Spatial Conservation Planning
(2025-05-08)New Guinea, the world’s largest tropical island, harbors some of the most biologically diverse and unique ecosystems. Despite its global ecological significance and endemic biodiversity, the region remains one of the most ... -
Tree functional traits driving nitrogen cycling in pure and mixed stands of Douglas fir and European beech
(2025-05-07)Forests globally are faced with climate change-induced challenges, necessitating adaptive silvicultural strategies to prevent the decline of ecosystem functions and loss of ecosystem services. In temperate Europe, forest ... -
Communication of Colletotrichum graminicola in development and pathogenic maize interactions
(2025-05-05)Colletotrichum graminicola is a filamentous ascomycete that infects Zea mays and reduces the annual yield by 10-20 % worldwide. The fungus produces two asexual spore types, oval and falcate-shaped conidia of which the ... -
Transient Triplet Metallopnictinidenes
(2025-04-30)Nitrenes (N–R) are subvalent key intermediates in organic synthesis and have been extensively studied. The heavier pnictinidene analogues have also attracted great interest, but comprehensive investigations that systematically ... -
Final Steps Towards Production of the ITk Pixel Detector for the ATLAS High Luminosity Upgrade
(2025-04-28)The Large Hadron Collider (LHC) upgrade to the High-Luminosity LHC (HL-LHC) will bring an unprecedentedly challenging environment to the detectors, with an instantaneous luminosity of $5\times10^{34}\,\rm cm^{-2}s^{-1}$, ... -
Untersuchung von Indikatoren zur Einschätzung des Risikos einer Subakuten Pansenazidose bei Milchkühen auf Praxisbetrieben
(2025-04-23)Feeding of high-yielding dairy cows in the beginning of lactation is a major challenge due to high energy requirements and reduced dry matter intake at the same time. This leads to diets with a high level of rapidly ... -
Terrestrial Carbon Dynamics under Land Use Transformation in Jambi, Indonesia
(2025-04-23)Tropical forests in Indonesia are rapidly being converted into agricultural systems, particularly oil palm and rubber plantations. These transformations significantly alter carbon dynamics, leading to substantial losses ... -
Evolution of polyploidy and apomixis in the pantropically distributed and species-rich genus Zanthoxylum (Rutaceae)
(2025-04-22)The proto-Rutaceae group includes genera with significant economic and evolutionary importance, yet their phylogenetic relationships and evolutionary mechanisms remain incompletely understood. This thesis focuses on the ... -
Understanding the Effective Number of Independent Chromosome Segments as a Tuning Parameter for Genomic Prediction
(2025-04-16)The effective number of independently segregating chromosome segments (𝑀𝑒) is a key parameter in animal selection. Its relevance lies within the methods to obtain the accuracy of genomic prediction. However, there is ... -
Housing pigs with undocked tails: methods for the early detection and prevention of tail biting
(2025-04-15)The occurrence of tail biting is a widespread problem in global pig farming. Painful biting incidents lead to a significant impairment of animal health, animal welfare and the performance of pigs in various production ... -
Effect of fragmentation and low density on gene flow and genetic diversity on two conifer species, Pinus gerardiana in Gardiz, Afghanistan, and Taxus baccata in Bavarian Forest National Park, Germany
(2025-04-14)This thesis investigates the genetic diversity, structure, and conservation needs of two coniferous species: Pinus gerardiana and Taxus baccata. Using advanced genetic markers, EST-SSRs and cpSSRs, the study reveals critical ... -
Small-scale dynamics and large-scale stability of the outer solar atmosphere
(2025-04-14)The Sun has long been utilized as an observatory for gaining a better understanding of high-energy plasma physics. With the advent of the space age and the continual improvement of Sun-observing instruments, physicists ... -
On the ground and above: Forest Composition Effects on Terrestrial and Arboreal Small Mammals and their Consequences for Seed Dynamics
(2025-04-10)1- Forest admixtures and non-native tree species have been increasingly employed in forestry practices as they have the potential to mitigate climate change impacts, enhance biodiversity and yield a greater economic ... -
Integrating Deep Learning Techniques into Trees Outside Forests (TOF) Monitoring by High Resolution Satellite Imagery
(2025-04-08)Trees outside forests (TOF) provide essential ecosystem services and livelihood benefits across diverse landscapes. They are also recognized as important carbon sinks, playing a crucial role in climate change mitigation ...