The effect of traces of hydrogen sulphide and of sulphur dioxide on the oxidation of methane over supported precious metals has been examined. Both gases inhibited catalytic oxidation over Pd and Rh, apparently as a result of sulphate formation. However, the catalytic activity of platinum was slightly enhanced by the pollutants.
The brightness of the Moon in the infrared region (1.3, 2.2μ) Fake Ghd Guide
was observed as a function of phase angle. The results essentially agreed with that in the visible region but showed a weak color dependence. The infrared albedos were found to be greater than the visible albedo and to vary from place to place by a factor of 2 or Ghd Flat Iron Amazon Uk
Recent experiments with evanescent waveguide modes demonstrated the existence of superluminal group velocities. The still ongoing debate concerning the definition of an appropriate signal velocity is revisited, and a case study of a raised cosine signal is presented to investigate the practical relevance of superluminal signals.
Calculations of fast neutron through a liquid oxygen slab are presented, with a view as to their applicability in the design of an oxygen filter to produce a 2.37 MeV monoenergetic neutron beam. It is found that, while an oxygen filter is possible, exceedingly large amounts of oxygen would be required if a large fraction of the transmitted flux is to be in the 2.37 MeV energy region.