The detector and velocity “transducer” components of a Mössbauer “spectrometer” are described. The energy resolution of the detecting system and the velocity resolution of the spectrometer are discussed in terms of the 14-keV line of Fe57. Special techniques used in conjunction with studies Nike Free 3.0 Mens Uk
of the 35-keV transition of Te125 are described. The hyperfine splittings of the ground and first excited states of Fe57 are reported as an indication of the possible utility of the spectrometer in the study of narrow line resonances.
Three new species of ‘Anisozygoptera’ are described from the non-marine Buy Nike Roshe Uk
Lower Cretaceous of southern England:Stenophlebia coramisp. nov.,Proeuthemis pritykinaegen. nov., sp. nov. andMesoepiophlebia bexleyisp. nov., providing the first Cretaceous record of the family Stenophlebiidae, and extending the range
of the relict extant family Epiophlebiidae. In addition, a campterophlebiid? is described but not named, providing fossil evidence of the superfamily Isophlebioidea in NW Europe.
Some modifications of a mechano-catalyst, Cu2O, and optimization of the reaction conditions were attempted to improve its activity for mechano-catalytic overall water splitting. The rates of evolution of H2 and O2 were improved by deposition of nafion onto Cu2O and the choice of an appropriate stirring rod. The irradiation of visible light (λ > 550 nm) was found to maintain the activity in the time course, which gradually decreased without irradiation.