Unsymmetric Pentacene- and Pentacenequinone-Fused Porphyrins: Understanding the Effect of Cross- and Linear-Conjugation (open access)

Unsymmetric Pentacene- and Pentacenequinone-Fused Porphyrins: Understanding the Effect of Cross- and Linear-Conjugation

Article says that unsymmetric pentacenequinone-fused (cross-conjugated) and pentacene-fused (linear-conjugated) porphyrins were designed and synthesized. This work provides important and useful information on guiding new material designs.
Date: July 29, 2022
Creator: Moss, Austen; Nevonen, Dustin E.; Hu, Yi; Nesterov, Vladimir N.; Nemykin, Victor N. & Wang, Hong
System: The UNT Digital Library
Manipulating plasma thyroid hormone levels alters development of endothermy and ventilation in nestling red-winged blackbirds (open access)

Manipulating plasma thyroid hormone levels alters development of endothermy and ventilation in nestling red-winged blackbirds

Authors of the article propose that thyroid hormones play an important role in regulating development of endothermy during the nestling period in altricial birds. Their data suggests plasma thyroid hormone levels play an active role in the systemic development of endothermic capacity and the development of ventilatory control.
Date: November 29, 2022
Creator: Sirsat, Tushar S.; Sirsat, Sarah K. G.; Price, Edwan R.; Pineda, Megan & Dzialowski, Edward M. (Edward Michael)
System: The UNT Digital Library
An experimental and modeling study on auto-ignition kinetics of ammonia/methanol mixtures at intermediate temperature and high pressure (open access)

An experimental and modeling study on auto-ignition kinetics of ammonia/methanol mixtures at intermediate temperature and high pressure

Article describes how a rapid compression machine has been applied to measure the ignition delay times of NH3/CH3OH mixtures covering pressures of 20 and 40 bar, equivalence ratios of 0.5, 1.0 and 2.0, and temperatures between 845 and 1100 K. Analysis of the pressure profiles shows three distinct ignition modes for NH3/CH3OH mixtures, facilitated by the pre-ignition heat release from NH3 consumption. A detailed mechanism for ignition of NH3/CH3OH fuel blends has been developed, capable of reproducing the ignition behavior of mixtures with reasonable accuracy.
Date: April 29, 2022
Creator: Li, Mengdi; He, Xiaoyu; Hashemi, Hamid; Glarborg, Peter; Lowe, Vincent M.; Marshall, Paul et al.
System: The UNT Digital Library