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Digitale Lösungen für Kompetenzentwicklung und Genehmigungsmanagement im Rückbau
No full textDer Rückbau kerntechnischer Anlagen bleibt in Deutschland und international eine sicherheitskritische und langfristig strategische Aufgabe. Mit dem Ausstieg aus der Kernenergienutzung verschiebt sich der Schwerpunkt der Branche zunehmend von betrieblichen Fragestellungen hin zu Rückbau, Abfallmanagement und regulatorischerProzessführung. Damit wächst die Bedeutung eines systematischen Kompetenzaufbaus und -erhalts. Mehrere aktuelle Analysen zeigen, dass der bevorstehende Generationswechsel in der kerntechnischen Industrie zu einem strukturellen Engpass führen wird: Ein erheblicher Anteil der qualifizierten Fachkräfte erreicht in den kommenden Jahren das Ruhestandsalter, während der Nachwuchs aus Hochschulen, Weiterbildungseinrichtungen und innerbetrieblichen Qualifizierungsprogrammen rückläufig ist. Fachgremien der IAEA, OECD/NEA und deutscher Behörden warnen seit Jahren vor sinkenden Ausbildungs- und Trainingskapazitäten sowie dem Verlust organisationsgebundenen Erfahrungswissens in sicherheitsrelevanten Tätigkeitsfeldern
Correlation between the Coherence Length and Ionic Conductivity in via the Anion Stoichiometry
No full text is a recently reported material with high conductivities of ∼10 at room temperature. Here, we explore how changing the anion ratio and the content in the series (−0.4 ≤ x ≤ 0.2) affects the ionic conductivity of the material. In doing so, we find that the maximum coherence length and ionic conductivity of are highly dependent on the / anion ratio in the material. Specifically, we show that, while an amorphous phase fraction of remains constant throughout the substitution series, any excess of results in a rapid decrease in the maximum coherence length of the crystaline fraction in each sample. Through a combination of diffraction and spectroscopic techniques, we show that this occurs because the anions cannot exist on the terminal sites of the chains in the material, even when it is made with an excess of resulting in a shortening of those chains. In contrast, it was observed that can occupy the bridging sites resulting in a dependence of the coherence length to the anion ratio. As such, the ionic conductivity of can be maximized by controlling the maximum coherence length in the material through the anion ratio. Notably, we achieved high ionic conductivities for consistent with literature reports only when the material was slightly and deficient, suggesting that the literature samples may also have been off-stoichiometry. In addition, we highlight the features missing from the current structural models of including the presence of mixed / sites, even in the stoichiometric material, which were previously thought to not exist. Finally, we show that slightly reducing the and contents in also translates to higher capacities when it is used as a catholyte in solid-state batteries. These findings show the importance of careful control of the stoichiometry in to optimize its properties and highlights the potential of for use as a catholyte in solid-state batteries
Measurement of integral cross sections of some neutron induced reactions on rubidium at a TRIGA reactor: comparison with integrated data from evaluated data libraries
No full textSpectrum-averaged cross sections of the reactions 85Rb(n,α)82xm + gBr, 85Rb(n,2n)84xm + gRb and 85Rb(n,p)85mKr were measured over the fast neutron spectrum with neutron energies from 0.5 to 20 MeV of a TRIGA reactor. In addition, data for the well-investigated reactions 113In(n,n´)113mIn and 115In(n,n´)115mIn were re-measured to confirm the validity of the neutron spectrum and the experimental techniques. The new results of the present measurements were used to perform integral tests of evaluated excitation functions in the latest nuclear data libraries, including ENDF/B-VIII.1, JEFF-3.3, JEFF-3.1/A, JENDL-5, IRDF-1.05, and TENDL-2023. The experimental data generally agree with the integrated values from the excitation functions within 8 %, with a few exceptions. For the reaction 85Rb(n,2n)84xm + gRb, the integrated value from the ENDF/B-VIII.1 library is higher by 17 % than the measured integral value. The JEFF-3.1/A and JENDL-5 libraries for the reaction 85Rb(n,p)85mKr appear to require improvement
Unveiling the exsolution mechanisms and investigation of the catalytic processes of Sr2FeMo0.65Ni0.35O6-δ using in situ transmission electron microscopy
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Constructing Localized Van Der Waals Gaps in Cubic‐Phase GeMnTe 2 Thermoelectric Material
No full textWhat Will the Grace Hopper-Powered Jupiter Supercomputer Bring for Sparse Linear Algebra?
No full textThe first exascale supercomputer in Europe, JUPITER, is currently being built using the NVIDIA Grace Hopper superchips as main building blocks. JUPITER is designed to provide computing power for both data-driven (AI) workloads and numerics-based simulation workloads. For both workload types, and particularly for PDE-based simulations, high-performance sparse linear algebra operations are crucial. In this paper, we analyze the performance levels that sparse linear algebra operations can achieve on the JUPITER supercomputer and identify algorithmic modifications that can improve performance by acknowledging the Grace Hopper architecture
Process integration of enzymatic and microbial PBAT conversion with a Pseudomonas taiwanensis mixed culture
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