Browsing Naturwissenschaften, Mathematik und Informatik by Issue Date
Now showing items 21-40 of 5785
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Molecular and Physiological Mechanisms of Cabbage Stem Flea Beetle (Psylliodes chrysocephala) Aestivation
(2025-12-01)Seasonal dormancy is a key adaptation that enables insects to survive predictable periods of environmental stress. Aestivation, a form of summer diapause, prepares insects for high-temperature and low-humidity conditions ... -
Analyses of biodiversity measures on wild bees in different agricultural landscapes of Germany
(2025-11-27)One of the most pressing environmental issues of our time is the ongoing decline in agricultural biodiversity in cultivated landscapes. Important ecosystem services within agricultural landscapes, such as pollination, ... -
Untersuchungen zum Wasserhaushalt tropischer Bäume in Abhängigkeit von der Meereshöhe in Süd-Ecuador
(2025-11-27)The scope of this research study examines the influence elevation has on the water status in tropical montane rainforests in southern Ecuador. The investigation focused upon the vessel anatomy of branches and roots as well ... -
Ecological and functional significance of plant hydraulics in a changing climate
(2025-11-27)This habilitation treatise evolved from seven years of postdoctoral work in the Department of Plant Ecology and Ecosystem research at the University of Göttingen. During this time, I had the opportunity to continue my ... -
Deriving Forest Structural and Functional Metrics from Airborne and Ground-based Mobile Laser Scanning
(2025-11-26)This study examined the application of LiDAR-based methods, specifically Airborne Laser Scanning (ALS) and ground-based Mobile Laser Scanning (MLS), to evaluate forest structural metrics and their ecological functions ... -
Stabilized Optical Scanning Tunneling Microscopy: Probing Defect-Driven Phenomena in Correlated Electron Systems
(2025-11-26)This thesis presents the development and application of a stabilized optical scanning tunneling microscopy (STM) approach that enables controlled, localized optical excitation at the atomic scale. A key advancement is the ... -
Polylactic acid as a binder for lignocellulosic-based insulation materials
(2025-11-26)This research explores the possible application of a renewable binder in the development of flexible insulation materials derived from lignocellulosic sources. These materials, based on lignocellulosic fibers, can be ... -
Climate dynamics across scales in a mountain landscape: Macro- and microclimatic modelling in the Río Puelo basin, northern Patagonia
(2025-11-26)Mountain forests in northern Patagonia are exposed to rapid climatic changes, with increasing temperatures, changing precipitation regimes, and more frequent and severe extreme events threatening their current structure ... -
Bis(amidophenolate)-supported Pnictogen Complexes: Redox Activity, Cooperativity and Electromerism
(2025-11-26)This thesis describes the synthesis, characterization and reactivity of pnictogen compounds derived from the tetradentate, redox-active bis(amidophenolate) ligand, N,N′-bis(3,5-di-tert-butyl-2-phenoxy)-1,2-phenylenediamide. ... -
Measurement of the $t\bar{t}H$ Production Cross-Section in the Non-Resonant Four Lepton Final State in $pp$ Collisions at $\sqrt{s}=13\,\text{TeV}$ with the ATLAS Detector
(2025-11-26)This thesis presents the measurements of the associated production of a top quark pair with a Standard Model Higgs boson in multi-lepton final states, focusing on the measurement of the inclusive cross-section in the $4\ell$ ... -
Network hyperexcitability and dopaminergic neuron loss in a novel A30P-driven Parkinson’s midbrain organoid model
(2025-11-24)Midbrain dopaminergic (mDA) neurons are essential for motor control, reward processing, emotional regulation and motivation. The degeneration of these neurons, seen in Parkinson’s disease (PD), disrupts fine motor control, ... -
New entrants and holistic business models in agriculture
(2025-11-24)Agriculture is becoming increasingly heterogeneous in its structure and output, accompanied by multifaceted expectations for the future, which adds complexity to political frameworks and support schemes. Addressing these ... -
Uncovering the interactome of peripheral myelin protein 22 kDa (PMP22) to understand its role in health and neuropathy
(2025-11-20)PMP22, a hydrophobic glycoprotein, is crucial for proper myelination in Schwann cells of the peripheral nervous system. Dosage alterations lead to the neuropathies Charcot-Marie-Tooth disease 1A (CMT1A), where PMP22 is ... -
Diagnostics of comprehensive simulations of the chromosphere
(2025-11-20)The solar chromosphere is a highly dynamic and complex region of the solar atmosphere. It plays an important role in the formation of many of the observed solar features, such as, prominences, spicules, and flares. In ... -
Time Reversal Breaking and Entropy Production in Non-Equilibrium Systems: Insights from Mean Back Relaxation
(2025-11-20)The distinction between equilibrium thermal fluctuations, exemplified by Brownian motion, and active non-equilibrium processes is an essential problem in various fields of non-equilibrium statistical physics and biophysics. ... -
Unsicherheit zukünftiger Waldentwicklung unter besonderer Berücksichtigung von Standort und Sterblichkeit der Wald-Kiefer (Pinus sylvestris L.) in Norddeutschland
(2025-11-19)Scots pine (Pinus sylvestris L.) is the most important tree species in northern Germany in terms of both area of cultivation and expected tolerance to drought stress. It typically occurs in poorly mixed, disturbance-prone ... -
Site-Selective C–H Activation for Small Molecules and π-Conjugated Polymers
(2025-11-19)The selective installation of organic fragments onto aromatic scaffolds remains a central challenge in organic synthesis. Due to growing concerns over resource depletion and environmental impact, chemists are increasingly ... -
Computational analysis of nucleosome assembly and cis-regulatory DNA elements
(2025-11-12)Induced pluripotent stem cells (iPSCs) represent embryonic stem cells (ESCs) that are reprogrammed from somatic stem cells. iPSCs can be directed to differentiate into any cell type in the human body, therefore, holding ... -
Enantioselective C–H Activations via Cobalt-/Nickel- Electrocatalysis and Iron-Catalyzed C–H Alkylations
(2025-11-12)During the past decade, catalytic C–H activation strategies with transition metal catalysts have been established. However, achieving more sustainable enantioselective transformations with cost-effective base metal catalysts ... -
Land-use trajectories in lowland Sumatra: Impacts on leaf area index and below-canopy temperatures
(2025-11-12)Land-use change is widespread across the globe, leading to significant biodiversity loss and impairing ecosystem functions. The land-use trajectories from forest to agriculture contributes to increased surface and air ...