Validation of a spatial model of background radiation using personal measurements in children.

Background: Limited knowledge about the prediction accuracy of exposure models hinders the interpretation of results from epidemiological studies on childhood cancer risks associated with exposure to background gamma-radiation.

Objective: We aimed to validate a spatial exposure model that we recently developed for Switzerland.

Methods: We used individual exposure measurements conducted with D-Shuttle dosimeters by 149 children throughout the country.

Characterisation of the ground XΠ and first excited AΣ electronic states of MgO by high-resolution photoelectron spectroscopy.

Despite the importance of MgO for understanding the electronic structure and chemical bonds in alkaline-earth metal oxides and its potential astrophysical relevance, hardly any spectroscopic information is available on this molecular cation. We report on a high-resolution photoelectron spectroscopic study of MgO using a resonant (1 + 1') two-photon excitation scheme in combination with PFI-ZEKE photoelectron spectroscopy. By carrying out the resonant excitation selected rotational levels of several intermediate states of different electronic configurations, total electronic spins, and internuclear distances, a broad range of vibrational levels of the XΠ ( = 3/2, 1/2) ground and AΣ first excited states of MgO were observed for the first time.

High-Resolution Photoelectron Spectroscopy of the Ground and First Excited Electronic States of MgXe.

We report on the characterization of the X Σ ground and the A Π (Ω = 1/2, 3/2) and B Σ electronically excited states of MgXe. Rotationally cold MgXe in the a Π(″ = 0) metastable electronic state was generated in a laser-ablation supersonic-beam source. Following single-photon excitation from the metastable state, the vibrational structure of the X state of MgXe was measured by pulsed-field-ionization zero-kinetic-energy photoelectron spectroscopy, and the adiabatic ionization energy of the X ← a ionizing transition was determined to be /() = 37,468.

Primary Proximal ACL Repair: A Biomechanical Evaluation of Different Arthroscopic Suture Configurations.

: Several suture techniques have been described in the past for direct ACL repair with poor healing capacity and a high re-rupture rate. Therefore, we investigated a refixation technique for acute primary proximal ACL repair. The purpose of this study is to compare the biomechanical properties of different suture configurations using a knotless anchor.