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Powder and Propellants: Energetic Materials at Indian Head, Maryland, 1890-1990

Description: Book describing the history of the U.S. Navy facility at Indian Head, Maryland, which researches, develops, tests, and evaluates chemical compounds used in gun and rocket propellants as well as cockpit ejection seats. "It is the story of how an institution adapted to changes in military technology, the individuals who shaped it, and the heritage they built" (front cover flap).
Date: 2002
Creator: Carlisle, Rodney P.
Item Type: Refine your search to only Book
Partner: UNT Press
open access

Re-examination of the N2O+O reaction

Description: This article is about how the reaction of N20 with O is a key step in consumption of nitrous oxide in thermal processes. In the present work ,the authors re-examined a wide range of experiments relevant for the N2O+O reaction through kinetic modeling, paying attention to the impact of artifacts such as impurities and surface reactions.
Date: July 27, 2023
Creator: Glarborg, Peter; Allingham, Johanne S.; Skov, Alexander B.; Hashemi, Hamid & Marshall, Paul
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Reactions of hydrazine with the amidogen radical and atomic hydrogen

Description: Article describes how the rate coefficient k1 for NH2 + N2H4 was measured to be (5.4 ± 0.4) × 10−14 cm3 molecule−1 s−1 at 296 K. The authors then describe how a combination of experiment and theory leads to a recommended rate coefficient for hydrogen abstraction of k1 = 6.3 × 10−23 T3.44 exp(+289 K/T) cm3 molecule−1 s−1.
Date: June 7, 2023
Creator: Gao, Yide; Alecu, I. M.; Hashemi, Hamid; Glarborg, Peter & Marshall, Paul
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Probing High-Temperature Amine Chemistry: Is the Reaction NH3 + NH2 ⇄ N2H3 + H2 Important?

Description: Article describes how the reaction NH3 + NH2 ⇄ N2H3 + H2 (R1) has been identified as a key step to explain experimental results for pyrolysis and oxidation of ammonia. In the present work, the reaction was studied by ab initio theory and by reinterpretation of experimental data.
Date: March 14, 2023
Creator: Marshall, Paul & Glarborg, Peter
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Measurement of the Intramolecular Hydrogen-Shift Rate Coefficient for the CH3SCH2OO Radical Between 314 and 433 K

Description: Article describes how the intramolecular hydrogen-shift rate coefficient of the CH3SCH2O2 (methylthiomethylperoxy, MSP) radical, a product formed in the oxidation of dimethyl sulfide (DMS), was measured using a pulsed laser photolysis flow tube reactor coupled to a high-resolution time-of-flight chemical ionization mass spectrometer that measured the formation of the DMS degradation end product HOOCH2SCHO. Measurements performed over the temperature range of 314–433 K yielded a hydrogen-shift r… more
Date: March 2, 2023
Creator: Assaf, Emmanuel; Finewax, Zachary; Marshall, Paul; Veres, Patrick R.; Neuman, Andrew & Burkholder, James B. (James Bart), 1954-
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Re-evaluation of rate constants for the reaction N2H4 (+ M) ⇄ NH2 + NH2 (+ M)

Description: Article describes how rate constants for the dissociation/recombination reaction N2H4 (+ M) ⇄ NH2 + NH2 (+ M) are determined by a combination of quantum-chemical calculations and statistical unimolecular rate theory. Implications of the present re-evaluated rate constants for the modeling of high temperature ammonia oxidation kinetics are discussed, showing an only small influence of their precise values on the overall properties of the process.
Date: October 4, 2023
Creator: Cobos, Carlos J.; Glarborg, Peter; Marshall, Paul & Troe, Jürgen
Item Type: Refine your search to only Article
Partner: UNT College of Science

Administrative Workflow

Description: This presentation is about the administrative workflow of library administrative student assistants. It was presented at the UNT Libraries' 2024 Student Snapshots Symposium held in Denton, Texas.
Date: April 10, 2024
Creator: Kamarapu, Manumitha & Sivaprakasam, Renugopal
Item Type: Refine your search to only Presentation
Partner: UNT Libraries
open access

Experimental and Modeling Study of Water Time Histories during H2S-N2O Combustion in a Shock Tube

Description: Article describes how, in the present study, the water formation was followed by laser absorption with N2O as an oxidant, instead of O2. Three H2S/N2O mixtures diluted in 98% Ar were studied to cover the following range of equivalence ratios: 0.5, 1.0, and 2.0, over a wide range of temperatures (1580–1940 K) around atmospheric pressure.
Date: June 7, 2023
Creator: Cooper, Sean P.; Marshall, Paul; Mathieu, Olivier; Pinzón, Laura T.; Mulvihill, Clayton R. & Glarborg, Peter
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Computational study of the gas-phase reactions of sulfuric acid with OH(ΠJ), O(3PJ), Cl(2P) and O(1D2) radicals

Description: This article is about how rate coefficients for reactions of H2SO4 with OH, O(3P) and Cl radicals over 160–298 K were estimated computationally. The authors propose kOH = 8.5 × 10-14 exp(-50 K/T), kO = 1.1 × 10-12 exp(-5012 K/T) and kCl = 3.1 × 10-9 exp(-3314 K/T) cm3 molecule-1 s−1.
Date: December 27, 2021
Creator: Marshall, Paul & Burkholder, James B. (James Bart), 1954-
Item Type: Refine your search to only Article
Partner: UNT College of Science

Organizing a Successful Workload Analysis Project

Description: Presentation sharing the process for developing and executing a workload analysis project at the University of North Texas Libraries for the Cataloging and Metadata Services department. It was presented at the Creative Solutions in Cataloging, Acquisitions, and Resources Management Conference held by Amigos Library Services on February 15, 2024.
Date: February 15, 2024
Creator: Yanowski, Kevin; Sassen, Catherine & Brannon, Sian
Item Type: Refine your search to only Presentation
Partner: UNT Libraries

GSA Scholarly Works Workflow

Description: This is a poster about the scholarly works workflow for a graduate student assistant. It was presented at the UNT Libraries' 2024 Student Snapshots Symposium held in Denton, Texas.
Date: April 10, 2024
Creator: Warrenfells, Ardis
Item Type: Refine your search to only Poster
Partner: UNT Libraries
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