How amino acids intercalate in CaFe layered double hydroxides: A combined RIXS and NEXAFS study.

Two-dimensional layered double hydroxides (LDHs) are ideal candidates for a large number of (bio)catalytic applications due to their flexible composition and easy to tailor properties. Functionality can be achieved by intercalation of amino acids (as the basic units of peptides and proteins). To gain insight on the functionality, we apply resonant inelastic soft x-ray scattering and near edge x-ray absorption fine structure spectroscopy to CaFe LDH in its pristine form as well as intercalated with the amino acids proline and cysteine to probe the electronic structure and its changes upon intercalation.

Cooperative Dynamics and Hydration of Aqueous D-Mannitol and -Inositol.

The cooperative dynamics and hydration of D-mannitol and yo-inositol in aqueous solution at 25 °C were investigated by broad-band dielectric relaxation spectroscopy (DRS) for solute concentrations < 0.9M. The recorded spectra, covering the frequency range 0.

Ion Association and Hydration of Some Heavy-Metal Nitrate Salts in Aqueous Solution.

Aqueous solutions of four heavy-metal nitrate salts (AgNO, TlNO, Cd(NO) and Pb(NO)) have been studied at 25 °C using broadband dielectric relaxation spectroscopy (DRS) at frequencies 0.27 ≤ ν/GHz ≤ 115 over the approximate concentration range 0.2 ≲ /mol L ≲ 2.

Cognitive performance in adults with post-COVID syndrome: Results from a German case-control study.

Numerous studies on post-COVID syndrome (PCS) describe persisting symptoms of cognitive impairment. Previous studies, however, often investigated small samples or did not assess covariates possibly linked to cognitive performance. We aimed to describe 1) global and domain-specific cognitive performance in adults with PCS, controls with previous SARS-CoV-2 infection and healthy controls, 2) associations of sociodemographics, depressive symptoms, anxiety, fatigue, somatic symptoms and stress with cognitive performance and subjective cognitive decline (SCD), using data of the LIFE-Long-COVID-Study from Leipzig, Germany.

Cation-Binding of Glutamate in Aqueous Solution.

Interactions of the cations Li, Na, Mg, and Ca with L-glutamate (Glu) in aqueous solution were studied at room temperature with dielectric relaxation spectroscopy in the gigahertz region. Spectra of ∼0.4 M NaGlu with added LiCl, NaCl, MgCl, or CaCl ((MCl) ≤ 1.