A versatile laser-based apparatus for time-resolved ARPES with micro-scale spatial resolution.

We present the development of a versatile apparatus for 6.2 eV laser-based time and angle-resolved photoemission spectroscopy with micrometer spatial resolution (time-resolved μ-ARPES). With a combination of tunable spatial resolution down to ∼11 μm, high energy resolution (∼11 meV), near-transform-limited temporal resolution (∼280 fs), and tunable 1.

Ab initio calculations of torsionally mediated hyperfine splittings in E states of acetaldehyde.

Quantum chemistry packages can be used to predict with reasonable accuracy spin-rotation hyperfine interaction constants for methanol, which contains one methyl-top internal rotor. In this work we use one of these packages to calculate components of the spin-rotation interaction tensor for acetaldehyde. We then use torsion-rotation wavefunctions obtained from a fit to the acetaldehyde torsion-rotation spectrum to calculate the expected magnitude of hyperfine splittings analogous to those observed at relatively high values in the E symmetry states of methanol.

[Stability control of a copper histidinate solution].

Some authors have suggested the administration subcutaneous of copper histidinate for the treatment of the Menkes disease. The purpose of this study was to control the complex formation of Cu (II)-L-Histidine in molar ratio 1/2 and to verify the stability in some conditions of determination and validation production.