E-Dissertationen: Browsing E-Dissertationen by Title
Now showing items 2135-2154 of 4164
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Longitudinalstudie zur Besiedlung des Abwassersystem eines Klinikneubaus mit multiresistenten Enterobakterien und Pseudomonaden im Vergleich zur MRE-Besiedlung bei den Patienten
Simon, Stefan Alexander (2024-08-26)Ein relevantes Risiko für den Eintrag gramnegativer Krankheitserreger stellen wasserführende Systeme dar. Dabei lag der Fokus in der Vergangenheit vor allem auf der Trinkwasserinstallation einschließlich der Armaturen und ... -
Lorentzkraftbildgebung: MR-basierte Darstellung Neuronaler Aktivität in Echtzeit
Bindl, Jakob (2019-02-12)In dieser Arbeit wurde eine neue Methode zur Darstellung neuronaler Aktivität in Echtzeit vorgestellt. Dabei wird die Lorentzkraft, die auf die elektrischen Ladungsträger aktiver Nervenzellen im Magnetfeld eines MR-Tomographen ... -
Loss of Inhibitory CD33 Signaling Results in Increased Microglial Activation
Wißfeld, Jannis (2021-06-23)CD33 is expressed on immune cells of myeloid origin, such as macrophages and microglia. Upon activation, CD33 recruits and activates protein tyrosine phosphatases, which results in attenuation of the activatory signaling ... -
Loss of Profilin3 Impairs Spermiogenesis by Affecting Acrosome Biogenesis, Autophagy, Manchette Development and Mitochondrial Organization
Tariq, Naila (2022-12-02)
PFN4 is Required for Acrosome Biogenesis by Regulating Autophagy through PI3K/AKT/mTOR Pathway <strong>Loss of Profilin3 Impairs Spermiogenesis by Affecting Acrosome Biogenesis, Autophagy, Manchette Development and Mitochondrial Organization</strong> <br> Profilins (PFNs) are key regulatory proteins for the actin ... -
Loss of protamine 1 and actin-like 7b – Investigating genes relevant for male fertility
Merges, Gina Esther (2024-02-13)Sperm express a suite of genes specific to the testis. While they likely play essential roles in genes. <br /> One of the key events during spermatogenesis is the replacement of histones by protamines. This leads to ... -
Low Dimensional Gauge Theories and Quantum Geometry
Ninad, Urmi (2020-10-14)This thesis explores the connection between supersymmetric gauge theories on curved spaces of dimensions two and three and geometries that arise in string theory. It does so by studying quantum field theoretic objects such ... -
Low Endotoxin Recovery: Wiederfindung und pyrogene Aktivität von Endotoxinen in pharmazeutischen Produkten
Negwer, Alexander (2021-08-06)Eine zuverlässige Überwachung bakterieller Kontaminationen ist entscheidend für die Herstellung und Sicherheit biopharmazeutischer Produkte. Die mikrobielle Sicherheit wird in der Regel (zusätzlich zu Sterilitätstests und ... -
Low mass hybrid pixel detectors for the high luminosity LHC upgrade
Gonella, Laura (2013-11-11)Reducing material in silicon trackers is of major importance for a good overall detector performance, and poses severe challenges to the design of the tracking system. To match the low mass constraints for trackers in High ... -
Low-column density gas clumps in the inner and outer halo of the Milky Way
Ben Bekhti, Nadya (2009-03-30)More than 40 years ago the occurrence of several narrow absorption lines in QSO (quasi-stellar object) spectra was recognized for the first time (Bahcall 1966). Soon after their detection it became clear that the absorption ... -
Low-dimensional Representations for Diverse Collections of 3D Surface Meshes
Hahner, Sara Vera (2024-02-29)The surfaces of 3D shapes are discretized by surface meshes that represent them in a processable way. This enables simulations of deforming components in CAE, animations for movies, or representations of human organs to ... -
Low-energy scattering on the lattice
Bour Bour, Shahin (2014-06-24)In this thesis we present precision benchmark calculations for two-component fermions in the unitarity limit using an ab initio method, namely Hamiltonian lattice formalism. We calculate the ground state energy for unpolarized ... -
Low-rank Tensor Recovery
Stojanac, Željka (2016-10-28)Low-rank tensor recovery is an interesting subject from both the theoretical and application point of view. On one side, it is a natural extension of the sparse vector and low-rank matrix recovery problem. On the other ... -
The Low-Resolution DRAO Survey of Polarized Emission at 1.4 GHz
Wolleben, Maik (2005)This thesis deals with the realization and analysis of a new polarization survey of the northern sky at a frequency of 1.4 GHz. Survey observations were carried out using the DRAO 26-m telescope and are absolutely calibrated. ... -
Lower semicontinuity, optimization and regularity of variational problems under general PDE constraints
Arroyo Rabasa, Adolfo (2018-04-12)We investigate variational properties of integral functionals defined on spaces of measures satisfying a general PDE constraint. The study of these properties is motivated by the following three problems: existence of ... -
Lösungen für das Stefan-Problem mit Gibbs–Thomson-Gesetz bei lokaler Minimierung
Röger, Matthias (2003)In dieser Arbeit wird ein neues Existenzresultat für das Stefan-Problem mit Gibbs-Thomson-Problem vorgestellt.Im Unterschied zum Vorgehen von Luckhaus bei seinem Beweis der Existenz und Uneindeutigkeit schwacher Lösungen ... -
Die Lößvorkommen des Pleiser Hügellandes bei Bonn und von Neustadt/Wied sowie der Picardie: Mineralogisch-geochemische und geomorphologische Charakterisierung, Verwitterungs-Beeinflussung und Herkunft der Lösse
Smykatz-Kloss, Bettina (2004)Die vorliegenden Untersuchungen wurden an den im Verlaufe des ICE-Trassenausbaus (Köln-Frankfurt) frisch aufgeschlossenen Lößprofilen Birlinghoven, Rauschendorf, Bockeroth, Thomasberg (alle im Pleiser Hügelland nahe Bonn) ... -
Lypd6: Ein neuartiger Modulator neuronaler nikotinischer Acetylcholinrezeptoren
Morsch, Marco (2009-05-15)Nikotinischce Acetylcholinrezeptoren (nAChRs) zeigen für unterschiedliche Agonisten spezifische Sensitivitäten und Desensitisierungskinetiken. Diese Rezeptoreigenschaften können z.B. durch Schlangenneurotoxine oder den ... -
Lysine-specific histone demethylase 1 (LSD1): A novel molecular target for tumor therapy
Lim, Soyoung (2010-01-27)Aberrant epigenetic changes in DNA methylation and histone acetylation are hallmarks of most cancers, while histone methylation had been considered to be irreversible and less versatile. Recently, several histone demethylases ... -
Machine learning approaches for adaptive optics in microscopy
Vishniakou, Ivan (2023-05-08)Microscopic imaging is an essential tool for science. For instruments that operate close to the physically possible diffraction limit, a main remaining challenge are aberrating operating conditions. For microscopy, such ... -
Machine learning for monitoring groundwater resources over Europe
Ma, Yueling (2022-08-30)Groundwater (GW) is an important natural resource for Europe and the world, and has been affected by extreme weather and climate, e.g., summer heat waves and droughts, and human overexploitation. As climate change and human ...