The Faculty of Mathematics and Natural Sciences: Mathematisch-Naturwissenschaftliche Fakultät: Recent submissions
Now showing items 1-20 of 5082
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Diversity in Reinforcement Learning
(2026-08-04)Reinforcement learning is a machine learning paradigm that aims to develop optimal policies for discrete-time control problems based on quantitative feedback on the learner’s behaviour. Reinforcement learning is formulated ... -
Knowledge-Driven Intelligent Systems for Precision Agriculture: A Demonstration on Disease Spread Prediction
(2026-08-04)Organic cultivation, resource efficiency, and sustainability are gaining increasing importance in times of climate change. To address these issues, modern agriculture is increasingly relying on the use of drones to monitor ... -
CCL17DTR mice as a new mouse model of epilepsy
(2026-08-04)Epilepsy is a serious neurodegenerative disease affecting millions of people worldwide. Patients suffer from unpredictable seizure episodes that drastically impair the quality of life. Approximately one third of epilepsy ... -
Systematische Quantifizierung des mitochondrialen Imports von Präproteinen unter proteotoxischen Bedingungen
(2026-08-04)Die Analyse von Mitochondrien ist ein wichtiger Indikator für den Gesundheitszustand einer Zelle und es wurde in den letzten Jahren immer deutlicher, dass die Untersuchung der Mitochondrien in vielen Krankheiten immer mehr ... -
The GDH sum rule and extension to photoproduction off neutron targets in the Jülich-Bonn model
(2026-08-03)In this thesis, the light baryon spectrum of nucleon and delta resonances is stud- ied up to center-of-mass energies of 2.5 GeV. In this energy region, the strong interaction is non-perturbative and other methods are ... -
Front-End Readout Circuit Design for DEPFET Pixel Detectors in 65-nm CMOS
(2026-05-06)This work presents a differential readout integrated circuit for DEPFET pixel matrices, with a systematic evaluation of trade-offs among key performance metrics such as power consumption, noise, and silicon area. Each ... -
Synthesis, crystal structure and Hirshfeld analysis of a new crystalline modification of the radical ion salt octamethylenetetrathiafulvalenium triiodide (OMTTF)I3
(2018-10-09)The reaction between 4,5,6,7-tetrahydro-2-(4,5,6,7-tetrahydro-1,3-benzodithiol-2-ylidene)-1,3-benzodithiole (common name: 4,4′,5,5′,6,6′,7,7′-octahydrodibenzotetrathiafulvalene, OMTTF) and an excess of iodine in tetrahydrofuran ... -
A new example of intramolecular C—H⋅⋅⋅Ni anagostic interactions: synthesis, crystal structure and Hirshfeld analysis of cis-bis[4-methyl-2-(1,2,3,4-tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamidato-κ2N1,S]nickel(II) dimethylformamide monosolvate
(2017-05-19)The reaction of Ni<sup>II</sup> acetate tetrahydrate with 4-methyl-2-(1,2,3,4-tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamide in a 2:1 molar ratio and recrystallization from dimethylformamide yielded the title ... -
Crystal structure of N-ethyl-2-(1,2,3,4-tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamide
(2017-01-31)There are two crystallographically independent molecules in the asymmetric unit of the title compound, C<sub>13</sub>H<sub>17</sub>N<sub>3</sub>S, one of them being disordered over the methyl group [site-occupancy ratio = ... -
A second crystalline modification of 2-{3-methyl-2-[(2Z)-pent-2-en-1-yl]cyclopent-2-en-1-ylidene}-hydrazinecarbothioamide
(2023-11-30)A second crystalline modification of the title compound, C<sub>12</sub>H<sub>19</sub>N<sub>3</sub>S [common name: <em>cis</em>-jasmone thiosemicarbazone] was crystallized from tetrahydrofurane at room temperature. There ... -
(3E)-1,1,1-Trichloro-4-methoxy-4-phenylbut-3-en-2-one
(2025-12-09)The title compound, C<sub>11</sub>H<sub>9</sub>Cl<sub>3</sub>O<sub>2</sub>, (common name: <em>β</em>-aryl-<em>β</em>-methoxyvinyl trichloromethylketone) was crystallized from a chloroform solution at room temperature. The ... -
Endocrine-disrupting nonylphenols: Determination in food samples and isomer-specific analysis
(2026-07-29)Nonylphenols (NPs) are degradation products of 4-nonylphenol ethoxylates (NPEs). NPEs are non-ionic surfactants that have been used for decades in cleaning agents and industrial processes due to their surfactant activity. ... -
N-Methyl-2-{3-methyl-2-[(2Z)-pent-2-en-1-yl]-cyclopent-2-en-1-ylidene}hydrazinecarbothioamide
(2024-01-09)The equimolar and hydrochloric acid-catalysed reaction between <em>cis</em>-jasmone and 4-methylthiosemicarbazide in ethanolic solution yields the title compound, C<sub>13</sub>H<sub>21</sub>N<sub>3</sub>S (common name: ... -
Synthesis, crystal structure and Hirshfeld analysis of the bis{(E)-2-[1-(benzo[d][1,3]dioxol-5-yl)ethylidene]-N-ethylhydrazine-1-carbothioamide-κS}-dichloridomercury(II) complex
(2026-05-15)The title compound, [HgCl<sub>2</sub>(C<sub>12</sub>H<sub>15</sub>N<sub>3</sub>O<sub>2</sub>S)2], was synthesized by the reaction of (<em>E</em>)-2-[1-(benzo[<em>d</em>][1,3]dioxol-5-yl)ethylidene]-<em>N</em>-ethylhydraz ... -
Synthesis, crystal structure and Hirshfeld analysis of N-ethyl-2-{3-methyl-2-[(2Z)-pent-2-en-1-yl]cyclopent-2-en-1-ylidene}hydrazinecarbothioamide
(2024-04-09)The title compound (C<sub>14</sub>H<sub>23</sub>N<sub>3</sub>S, common name: <em>cis</em>-jasmone 4-ethylthiosemicarbazone) was synthesized by the equimolar reaction of <em>cis</em>-jasmone and 4-ethylthiosemicarbazide in ... -
Identification of a Hsp40 Involved in the Cytosolic Quality Control of Mitochondrial Precursor Proteins
(2026-07-28)(noch nicht zugänglich / not yet accessible) -
Non-reversible Lifts of Reversible Diffusions and their Convergence to Equilibrium
(2026-07-28)This thesis is concerned with convergence to stationarity of non-reversible Markov processes with degenerate noise, known as hypocoercivity. We develop a framework that allows to derive rates of convergence towards the ... -
Fast micro thermal desorption combined with cryofocusing for ultra fast gas chromatography
(2026-07-28)In safety research, gas chromatography is a commonly used technique for the detection of hazardous substances in air samples for example. When public safety is at risk and decisions about protective measures must be made, ... -
Coupled high-finesse optical Fabry-Pérot microcavities
(2026-07-28)Dissipation is unavoidable in any realistic physical system and can strongly reshape its dynamics and spectra. Coupled cavity systems offer a minimal and highly controllable setting in which coherent photon exchange competes ... -
Development of a Parameter Estimation Pipeline for Multi-Cellular Biological Processes
(2026-07-28)Tissue dynamics are complex and involve interactions between different cell types and extracellular components on different spatial and temporal scales. Specific tissue properties are relevant for a broad range of processes, ...
