A5049370878- Advanced Chemical Physics Studies
- Quantum, superfluid, helium dynamics
- Magnetic properties of thin films
- Formal Methods in Verification
- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Hearing, Cochlea, Tinnitus, Genetics
- Software Testing and Debugging Techniques
- Physiological and biochemical adaptations
- Marine animal studies overview
- Fullerene Chemistry and Applications
- Electron and X-Ray Spectroscopy Techniques
- Fusion materials and technologies
- Nuclear Materials and Properties
- Atomic and Molecular Physics
- Bat Biology and Ecology Studies
- Biochemical Analysis and Sensing Techniques
- Hydrogen Storage and Materials
- Chemical Reaction Mechanisms
- Animal Vocal Communication and Behavior
- Software Reliability and Analysis Research
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Electron Microscopy Techniques and Applications
- Spectroscopy and Quantum Chemical Studies
- Magnetic Properties and Applications
Regensburg University of Applied Sciences
2024
Friedrich Schiller University Jena
2020-2024
Jena University Hospital
2017-2024
Fraunhofer Institute for Ceramic Technologies and Systems
2023
Vienna University of Economics and Business
2013-2022
The Chicago School of Professional Psychology
2020-2022
Universität Innsbruck
2012-2021
Cicor (Germany)
2013-2021
Universität der Bundeswehr München
2020
Relay Therapeutics (United States)
2019
Recent studies have suggested that Paleozoic hyperoxia enabled animal gigantism, and the subsequent hypoxia drove a reduction in size. This evolutionary hypothesis depends on argument gas exchange many invertebrates skin-breathing vertebrates becomes compromised at large sizes because of distance effects diffusion. In contrast to vertebrates, which use respiratory circulatory systems series, insects is almost exclusively determined by tracheal system, providing particularly suitable model...
The provision of a particle and power exhaust solution which is compatible with first-wall components edge-plasma conditions key area present-day fusion research mandatory for successful operation ITER DEMO. work package plasma-facing (WP PFC) within the European programme complements laboratory experiments, i.e. in linear plasma devices, electron ion beam loading facilities, studies performed toroidally confined magnetic such as JET, ASDEX Upgrade, WEST etc. connection both groups done via...
In the past, damage patterns produced on papilla of chick by loud pure tones different frequencies have been used to study development sound analysis hair cells basilar papilla. One conclusion from these data was that best response frequency individual changes substantially with age. However, this method has criticized as unreliable. Now experiments performed in which single characterized nerve fibers were stained horseradish peroxidase permit unequivocal localization specific responses...
The evolution of ferromagnetic (FM) domains across the temperature-driven antiferromagnetic (AF) to FM phase transition in uncapped and capped epitaxial FeRh thin films was studied by x-ray magnetic circular dichroism photoemission electron microscopy. coexistence AF phases evidenced broad different stages nucleation, growth, coalescence were directly imaged. nucleates into single domain islands width an individual nucleus is sharper than that a macroscopic average.
Stoichiometric FeRh undergoes a temperature-induced antiferromagnetic (AFM) to ferromagnetic (FM) transition at $\ensuremath{\sim}350\text{ }\text{ }\mathrm{K}$. In this Letter, changes in the electronic structure accompanying are investigated epitaxial thin films via bulk-sensitive valence-band and core-level hard x-ray photoelectron spectroscopy with photon energy of 5.95 keV. Clear differences between AFM FM states observed across entire spectrum these well reproduced using...
Abstract The lemurs of Madagascar (Primates: Lemuriformes) are a monophyletic group that has lived in isolation from other primates for about 50 million years. Lemurs have diversified into species with diverse daily activity patterns and correspondingly different visual adaptations. We assessed the arrangements retinal cone rod photoreceptors six nocturnal, three cathemeral two diurnal lemur quantified parameters species. analysis revealed lower densities higher nocturnal than photoreceptor...
The CoFeB/MgO system shows promise as a magnetic tunnel junction with perpendicular magnetization and low critical current densities for spin-torque driven switching. distribution of B after annealing is believed to be performance. We have studied the in Ta/Co0.2Fe0.6B0.2/MgO sample annealed at 300 °C 1 h standing-wave hard x-ray photoemission spectroscopy (SW-HXPS). Comparing experimental rocking curve data optical calculations indicates diffusion 19.5% uniformly into MgO 23.5% thin TaB...
Molecular dynamics simulations of liquid ethylene glycol described by the OPLS-AA force field were performed to gain insight into its hydrogen-bond structure. We use population correlation function as a statistical measure for lifetime. In an attempt understand complicated hydrogen-bonding, we developed new molecular visualization tools within Vish Visualization shell and used it visualize life each individual hydrogen-bond. With this tool formation breaking well clustering chain in...
Helium droplets are doped with fullerenes (either C60 or C70) and hydrogen (H2 D2) investigated by high-resolution mass spectrometry. In addition to pure helium cluster ions, hydrogen-fullerene complexes observed upon electron ionization. The composition of the main ion series is (H2)nHCm+ where m = 60 70. Another even-numbered (H2)nCm+, slightly weaker in stark contrast ions for which (H2)n+ barely detectable. (H2)nCm+ exhibit abrupt drops abundance at n 32 37 C70, indicating formation an...
A general entry to dimeric or oligomeric pyridinium macrocycles related natural products 2 and 3, recently extracted from sponges, is reported. series of 3-(ω-aminoalkyl)pyridines 6a−c has been synthesized first. The Zincke synthesis salts starting such derivatives opened a new efficient route cyclic dimer 11 cyclostellettamine B. It allowed, in addition, the highly selective syntheses oligomers 18 21 corresponding macrocycles, tetramer 23 octamer 25. These results suggest plausible pathway...
We present a general theoretical methodology and related open-access computer program for carrying out the calculation of photoelectron, Auger electron, x-ray emission intensities in presence several optical effects, including total reflection at grazing incidence, excitation with standing-waves produced by from synthetic multilayers core-level resonance conditions, use variable polarization to produce magnetic circular dichroism. Calculations illustrating all these effects are presented,...
We present a detailed study of the electronic structure and chemical state high-quality stoichiometric EuO O-rich ${\mathrm{Eu}}_{1}{\mathrm{O}}_{1+x}$ thin films grown directly on silicon without any buffer layer using hard x-ray photoemission spectroscopy (HAXPES). determine oxidation from consistent quantitative peak analysis $4f$ valence band $3d$ core-level spectra. The results prove that nearly ideal, stoichiometric, homogeneous can be silicon, with uniform depth distribution divalent...
Pthread-style multithreaded programs feature rich thread communication mechanisms, such as shared variables, signals, and broadcasts. In this article, we consider the automated verification of where an unknown number threads execute a given finite-data procedure in parallel. Such procedures are typically obtained predicate abstractions recursion-free source code written C or Java. Many safety problems over replicated decidable via reduction to coverability problem certain types well-ordered...
Mixtures of ethylene glycol with water are a prominent example media variable viscosity. Classical molecular dynamics simulations at room temperature were performed for mixtures (EG) and EG mole fractions xE = 0.0, 0.1, 0.2, 0.4, 0.6, 0.9, 1.0. The calculated dielectric loss spectra in qualitative agreement experiment. We found slightly overestimated slowdown the increasing concentration compared to experimental data. Statistics hydrogen bond network lifetimes derived from suitable time...
Abstract Molecular alterations within the hematopoietic system influence cellular longevity and development of age-related myeloid stem-cell disorders like acute leukemia (AML) chronic (CML). A reduced SIRT7-expression in aged murine stem cells (HSC) resulted increased proliferation. In this study we investigated changes healthy humans relevant pathomechanisms AML CML. leukocytes people decreased an age-dependent manner. Low SIRT7 mRNA levels were also detected CML patients. With positive...
Standing-wave-excited photoemission is used to study a SrTiO3/LaNiO3 superlattice. Rocking curves of core-level and valence band spectra are derive layer-resolved spectral functions, revealing suppression electronic states near the Fermi level in multilayer as compared bulk LaNiO3. Further analysis shows that these not homogeneously distributed over LaNiO3 layers but more pronounced interfaces. Possible origins this effect its relationship previously observed metal-insulator-transition...