Vibrational Spectroscopy of Fe(CH) (n = 1-3) and Fe(CH).

Vibrational spectra are measured for Fe(CH) (n = 1-3) and Fe(CH) in the C-H stretching region (2650-3100 cm) using photofragment spectroscopy, monitoring loss of CH. All of the spectra are dominated by an intense peak at around 2800 cm that is red-shifted by ∼120 cm from free methane. This peak is due to the symmetric C-H stretch of the η hydrogen-coordinated methane ligands.

Endovascular brachytherapy and restenosis following lower limb angioplasty: Systematic review and meta-analysis of randomized clinical trials.

Background: Restenosis is a fundamental weakness of percutaneous femoropopliteal angioplasty (PTA). The potential of endovascular brachytherapy (EVBT) to reduce restenosis has been evaluated in randomized clinical trials, but no pooled analysis has been undertaken.

Methods: A systematic review was undertaken to identify randomized controlled trials in which PTA alone was compared to PTA plus EVBT.