Mathematisch-Naturwissenschaftliche Fakultät: Mathematisch-Naturwissenschaftliche Fakultät: Neuzugänge
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Evidence for tt̄tt̄ production in the multilepton final state in proton–proton collisions at √s = 13 TeV with the ATLAS detector at the LHC
(2025-01-20)The first evidence for simultaneous production of four top quarks is presented. The measurement is conducted by selecting events having two same-charge leptons or at least three leptons and by analysing 139 fb<sup>-1</sup> ... -
Untersuchungen zur Darstellung und Reaktivität von σ3λ3-Oxaphosphiranen
(2025-01-17)Im Rahmen der vorliegenden Arbeit wurde die Freisetzung von σ<sup>3</sup>λ<sup>3</sup>-Oxaphosphiranliganden aus <em>P</em>-CPh<sub>3</sub>-substituierten Oxaphosphiranmetallkomplexen untersucht. Des Weiteren wurde die ... -
Modelling Secondary Circulation in Convective Boundary Layer Using Large Eddy Simulation
(2025-01-17)Mesoscale secondary circulations, which frequently arise over heterogeneous land surfaces, profoundly influence atmospheric structure and characteristics. Its structure is primarily shaped by the combined effects of wind ... -
TCAD Simulations and Test Beam Characterization of MAPS for Future Lepton Colliders
(2025-01-17)Monolithic active pixel sensors (MAPS) produced in a 65 nm CMOS imaging technology are being investigated for applications in particle physics. The MAPS design has a small collection electrode with an input capacitance of ... -
Investigating the Biosynthesis of G Protein Inhibitor FR900359
(2025-01-17)FR900359 (FR) is a potent and selective inhibitor of Gq proteins, obstructing intracellular signaling of numerous G protein-coupled receptors (GPCRs). This makes it a promising pharmacological tool for investigating ... -
Study of B → π ℓ ν and B → ρ ℓ ν decays and extraction of |Vub| at Belle II
(2025-01-16)This thesis presents a measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element magnitude |<em>V<sub>ub</sub></em>| from a simultaneous study of the semileptonic decays <em>B<sup>0</sup> → π<sup>-</sup> ℓ<sup>+</sup> ... -
Entwicklung eines neuen Cluster-Finders für das Crystal-Barrel-Kalorimeter
(2025-01-10)Mit der experimentellen Untersuchung des Anregungsspektrums von Hadronen können Vorhersagen von Quarkmodellen sowie von Gitter-QCD-Rechnungen getestet und damit ein tieferes Verständnis der zugrundeliegenden starken ... -
The Never-Ending Story of Authentication: Investigating Password Composition Policies and Second-Factor Recoverability
(2025-01-10)Authentication is an area where users regularly encounter IT security, and it has been studied in the field of usable IT security for at least 25 years. There are numerous proposals and ideas to improve the IT security of ... -
Functionalized Biaryls as Building Blocks for Non-Aggregating Molecular Spoked Wheels
(2025-01-08)Molecular spoked wheels (MSWs) showed to be synthetically accessible in various sizes and functionalization in the past. Due to their construction of not only phenylene- but also acetylene- and bisacetylene-units, some of ... -
Photoredoxkatalysen mit Titanocenen
(2025-01-08)Titanocen-Katalysatoren bieten vielfältige Anwendungsmöglichkeiten in verschiedensten chemischen Reaktionen. In der vorliegenden Arbeit wurden elektrochemische und photochemische Methoden sowie das Konzept der Additiv-un ... -
Combinatorial aspects of bow varieties
(2025-01-08)First introduced by Cherkis in theoretical physics, bow varieties form a rich family of symplectic varieties generalizing Nakajima quiver varieties. An algebro-geometric definition was later given by Nakajima and Takayama ... -
Large-Scale X-ray Studies of Nearby Galaxy Clusters with eROSITA
(2025-01-07)Galaxy clusters form in the intersections of the cosmic web and grow through mergers and accretion of smaller substructures transported by the cosmic filaments. Hence, the outskirts of galaxy clusters are of great significance ... -
Methods and tools for studying ecto-5'-nucleotidase (CD73)
(2024-12-17)Ecto-5’-nucleotidase (CD73), a glycosylphosphatidylinositol (GPI)-anchored glycoprotein expressed mainly in the membranes of immune and endothelial cells and released in exosomes or as a soluble protein, has emerged as a ... -
Generation, characterization, and potential food applications of a novel red colorant formed by oxidative coupling of chlorogenic acid and tryptophan
(2024-12-17)Due to growing consumer skepticism regarding synthetic food colorants and their potential health effects and environmental impact, there is a rising interest in novel natural compounds derived from plants. A red-colored ... -
Rapid 3D Whole Brain Molecular MRI at 7T
(2024-12-17)Magnetic resonance imaging (MRI) has emerged as a leading, non-ionizing diagnostic tool in medical practice over the last decades. Beyond, MRI has evolved into an expansive field of research, yielding a multitude of novel ... -
Combining Ecohydrological Catchment Modeling and Water Quality Monitoring Data to Assess Nitrogen Pollution in the Swist River Basin, Germany
(2024-12-17)Legislation like the EU Water Framework Directive demands the development as well as implementation of catchment-scale monitoring and management plans to control pollution of surface waters and ensure their good status. ... -
Biosynthesis and biotechnological application of the glycine-glucolipid from the marine bacterium Alcanivorax borkumensis
(2024-12-17)This study investigated the production, biosynthesis pathway, and physiological function of the glycine-glucolipid produced by the marine bacterium <em>Alcanivorax borkumensis</em>. An absolute quantification method using ... -
Subtrajectory Clustering, Curve Averaging and the Complexity of Underlying Range Spaces
(2024-12-13)In this thesis, we study the clustering of spatial data with a focus on trajectory data. Trajectory data appears in various applications. These range from the recorded positions of moving objects (e.g. animals, humans, ... -
Spin Labeling with Nitroxide, Trityl, and Copper Labels for Protein Structure Elucidation by EPR Spectroscopy
(2024-12-13)In this thesis, the intricate challenges that emerge in the application of site-directed spin labeling (SDSL) techniques for structural investigation of biomolecules are addressed, with a specific focus on nitroxide, trityl ... -
Mathematical modelling of complete recessive lethals: Adaptive dynamics across varying genetic and population structures
(2024-12-12)The study of recessive lethal diseases in populations presents significant challenges, from estimating key parameters - such as the number of genes involved and the mutation rates driving genetic degeneration - to understanding ...
