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Masterarbeit
Phylogenetische und morphologische Untersuchungen der Gattung Palifer (Hymenochaetales, Basidiomycota)
(2019-06)
The Hyphodontia s.l. genus Palifer has only been phylogenetically examined by one available ribosomal ITS and LSU sequence from GenBank. This Palifer verecundus sequence indicates a position of Palifer among Xylodon. During the studies for the presented master thesis 15 new ITS and 11 LSU sequences have been generated including Palifer gamundiae, P. hjortstamii, P. wrightii, and P. verecundus. The most successful combination of primer pairs was ITS5/ITS2 and ITS3/ALR0 for ITS amplification. The LSU region was amplified ...
Teil eines Buches
Professioneller Konzeptwechsel zum Thema Neuromythen in der universitären Lehramtsausbildung Biologie
(Waxmann, 2018)
Sowohl angehende als auch praktizierende Lehrkräfte glauben z.B. an die Existenz von Lerntypen oder die Effektivität von Brain-Gym. Dabei handelt es sich um Neuromythen, d.h. Alltagskonzepte zum Thema Lernen und Gedächtnis. Im Rahmen dieses Beitrags wird beschrieben, ob und inwiefern eine nach dem Modell des professionellen Konzeptwechsels entwickelte Lernumgebung, die Zustimmung zu Neuromythen bei Studierenden reduzieren kann. Der Fokus dieses Beitrags liegt auf dem Element Reflexion mittels Konzeptwechseltexten. ...
Teil eines Buches
Lernen mittels Konzeptwechsel in der Hochschuldidaktik
(Waxmann, 2018)
Im vorliegenden Beitrag wird das Lehr-Lernmodell des Konzeptwechsels (Conceptual Change) vom schulischen auf den universitären Kontext, bzw. auf die erste Phase der Lehrerbildung übertragen. Es wird beschrieben, welche Arten von Präkonzepten bei angehenden Lehrkräften bestehen können und vor dem Hintergrund professioneller Kompetenz ausgeführt, welche Folgerungen sich für die Lehrerbildung ableiten lassen. Auf der Basis eines Modells zum professionellen Konzeptwechsel werden Bedingungen und Ziele des Konzeptwechsels ...
Dissertation
Existence and Regularity Results of a Ferroelectric Phase-Field Model
(2019)
In this thesis, we investigate the existence and regularity results of a ferroelectric phase-field model, which is a state-of-the-art model arising in recent years from the engineering area for the ferroelectric study.
Dissertation
Gold Surface Nanostructuring with Ultrashort Laser Pulses - Study of Non-equilibrium Effects
(2019)
Laser material interaction and structure formation in metals under controlled ultrashort laser pulse conditions are discussed in this work. A novel approach is presented describing the exact amount of energy deposited by a laser pulse in a gold surface, applicable under a variety of structuring conditions. The presented model is validated by a new introduced broad-band pump-probe reflectivity measurement method. A technique also applicable to investigate other phenomenas where 20 fs resolution combined with an octave ...
Dissertation
Rethinking the genus Hyphodontia s.l. (Hymenochaetales, Basidiomycota) – investigations on a worldwide scope including new taxonomy, phylogeny, and identification keys
(2018-12)
The dissertation “Rethinking the genus Hyphodontia s.l. (Hymenochaetales, Basidiomycota) – investigations on a worldwide scope including new taxonomy, phylogeny, and identification keys” was elaborated by Janett Riebesehl in the Department of Ecology at the University of Kassel.
Changing the classification system of the fungal genus Hyphodontia s.l. to treat the species from the broad Hyphodontia s.l. concept by a division into other genera was continued. Hjortstam and Ryvarden (2002, 2009) began the concept, but ...
Aufsatz
Role of Pseudouridine Formation by Deg1 for Functionality of Two Glutamine Isoacceptor tRNAs
(2017-01-26)
Loss of Deg1/Pus3 and concomitant elimination of pseudouridine in tRNA at positions 38 and 39 (ψ38/39) was shown to specifically impair the function of tRNAGlnUUG under conditions of temperature-induced down-regulation of wobble uridine thiolation in budding yeast and is linked to intellectual disability in humans. To further characterize the differential importance of the frequent ψ38/39 modification for tRNAs in yeast, we analyzed the in vivo function of non-sense suppressor tRNAs SUP4 and sup70-65 in the absence ...
Dissertation
High-Speed 1.55 µm Quantum Dot Lasers with Electronically Coupled Quantum Well - Dot Active Regions
(2019-07-31)
The expansion of long-distance data communication at a wavelength of 1.55 µm calls for larger data transfer rates. Consequently, an improvement of emission and modulation properties of lasers emitting in this wavelength region is of high interest. The utilization of so-called tunnel-injection (TI) structures in InP-based quantum dot (QD) lasers is promising to fulfill this task. The aim of this thesis was the realization and analysis of TI structures in the lattice matched InP material system and incorporation into ...
Dissertation
Quantum optimal control theory of photoelectron spectroscopy
(2018)
The object of this doctoral thesis is two-fold and can be classified into two, but intrinsically related categories: (i) development of theoretical models for the simulation of electron dynamics and in parallel to this, (ii) method development of efficient numerical algorithms for ad hoc control of photoelectron and photoion-related observables. The first category primarily focuses on the development of a variety of theoretical models describing the interaction of light and matter for the extraction and control of ...