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 ...

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. ...

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 ...

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.

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 ...

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 ...

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 ...

Since humans have begun to explore nature, they came up with new ways and tools, which have been permanently improved. At some point, those tools allowed to look into the microworld and to study the quantum nature of matter. One of such tools to explore the quantum world is the light amplification by stimulated emission of radiation (laser). Since the first lasers were built almost 60 years ago, their capabilities improved permanently, allowing the study of hitherto-unknown physical phenomena. Two of such ...

A key in understanding the fundamental structure of atoms and molecules has been their absorption and emission of electromagnetic radiation across all spectral ranges. The observation of discrete line spectra contributed to the development of core concepts in quantum mechanics and thus the modern picture of physical processes occurring at small scales. The ongoing refinement of both experimental and theoretical methods in spectroscopy allows to deal with succeedingly more complex systems in different interactions to ...

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 ...