Solubility of Tris(hydroxymethyl)aminomethane in Water + Methanol + 1-Propanol Mixtures at Various Temperatures (open access)

Solubility of Tris(hydroxymethyl)aminomethane in Water + Methanol + 1-Propanol Mixtures at Various Temperatures

Article on the solubility of tris(hydroxymethyl)aminomethane in water + methanol + 1-propanol mixtures at various temperatures.
Date: July 15, 2015
Creator: Jouyban-Gharamaleki, Vahid; Jouyban-Gharamaleki, Karim; Soleymani, Jafar; Acree, William E. (William Eugene); Kenndler, Ernst & Jouyban, Abolghasem
Object Type: Article
System: The UNT Digital Library
Utilizing Behavioral Economics to Understand Adherence to Physical Activity Guidelines among a Low-Income Urban Community (open access)

Utilizing Behavioral Economics to Understand Adherence to Physical Activity Guidelines among a Low-Income Urban Community

This article examines the association between monetary saving behaviors and physical activity among adults of low-income who reside in an urban community.
Date: July 2015
Creator: Shuval, Kerem; Si, Xia; Nguyen, Binh T. & Leonard, Tammy
Object Type: Article
System: The UNT Digital Library
Localization of polyhydroxybutyrate in sugarcane using Fourier-transform infrared microspectroscopy and multivariate imaging (open access)

Localization of polyhydroxybutyrate in sugarcane using Fourier-transform infrared microspectroscopy and multivariate imaging

This article demonstrates the power of infrared microspectroscopy to rapidly image plan sections to provide a snapshot of the chemical composition of the cell.
Date: July 10, 2015
Creator: Lupoi, Jason S.; Smith-Mortiz, Andreia; Singh, Seema; McQualter, Richard B.; Scheller, Henrik V.; Simmons, Blake A. et al.
Object Type: Article
System: The UNT Digital Library
The Reaction Kinetics of Amino Radicals with Sulfur Dioxide (open access)

The Reaction Kinetics of Amino Radicals with Sulfur Dioxide

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
Object Type: Text
System: The UNT Digital Library