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Accurate values for the rate and temperature dependence of the reaction NO + O3 → NO2 + O2 are important in the chemical modelling of photochemical processes in the atmosphere. Previous measurements have been made at low total pressures and/or with very large mixing ratios relative to those observed in the atmosphere. In this study the reaction rate has been measured using a novel approach under tropospheric...
The initial electron transfer steps in pigment modified reaction centers, where bacteriopheophytin is replaced by plant pheophytin (R26.Phe-a RCs) have been investigated over a wide temperature range by femtosecond time-resolved spectroscopy. The experimental data obtained in the maximum of the bacteriochlorophyll anion band at 1020 nm show the existence of a high and long-lived population of the...
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