7 Matching Results

Search Results

The Reaction Kinetics of Amino Radicals with Sulfur Dioxide

Description: Abstract: Application of the laser photolysis–laser-induced fluorescence method to the reaction NH2 + SO2 in argon bath gas yields pressure-dependent, third-order kinetics which may be summarized as 𝑘 = (1.49 ± 0.15) × 10^−31 (𝑇/298 K) − 0.83 cm^6 molecule^−2 s^−1 over 292 – 555 K, where the uncertainty is the 95% confidence interval and includes possible systematic errors.The quenching of vibrationally excited NH2 is consistent with a high-pressure limit for NH2 + SO2 of (1.62 ± 0.25) × 10^−11 cm^3 molecule^−1 s^−1 over the temperature range 295–505 K, where again the 95% confidence interval is shown. Abinitio analysis yields a H2N – SO2 dissociation enthalpy of 73.5 kJmol−1, and comparison with RRKM theory and the exponential down model for energy transfer yields ⟨Δ𝐸⟩down = 350 cm^−1 for Ar at room temperature.
Date: April 29, 2015
Creator: Gao, Yide; Glarborg, Peter & Marshall, Paul
Partner: UNT College of Arts and Sciences

Public Libraries and Democratization in Three Developing Countries: Exploring the Role of Social Capital

Description: This article explores the role of social capital. The authors develop a theoretical framework intended to facilitate systematic investigation of the contributions public libraries may make to democratization.
Date: March 2012
Creator: Ignatow, Gabriel; Webb, Sarah M.; Poulin, Michelle; Parajuli, Ramesh; Fleming, Peter; Batra, Shika et al.
Partner: UNT College of Public Affairs and Community Service