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Ignition delay times of NH3/DME blends at high pressure and low DME fraction: RCM experiments and simulations
Authors of the article describe how autoignition delay times of ammonia/dimethyl ether (NH3/DME) mixtures were measured in a rapid compression machine with DME fractions of 0, 2 and 5 and 100% in the fuel. Analysis of the mechanism indicates that this 'early DME oxidation' generates reactive species that initiate the oxidation of ammonia, which in turn begins heat release that raises the temperature and accelerates the oxidation process towards ignition. This is the accepted manuscript version of the published article.
Date:
January 14, 2021
Creator:
Dai, Liming; Glarborg, Peter; Gersen, Sander; Marshall, Paul; Mokhov, Anatoli & Levinsky, Howard
Object Type:
Article
System:
The UNT Digital Library
Oxidation of methylamine
Article describes how a detailed chemical kinetic model for oxidation of methylamine has been developed, based on theoretical work and a critical evaluation of data from the literature. The mechanism was validated against experimental results from batch reactors, flow reactors, shock tubes, and premixed flames. This is the accepted manuscript version of the published article.
Date:
August 5, 2020
Creator:
Glarborg, Peter; Andreasen, Charlotte S.; Hashemi, Hamid; Qian, Rachel & Marshall, Paul
Object Type:
Article
System:
The UNT Digital Library
Acetaldehyde oxidation at elevated pressure
A detailed chemical kinetic model for oxidation of CH3CHO at intermediate to high temperature and elevated pressure has been developed and evaluated by comparing predictions to novel high-pressure flow reactor experiments as well as shock tube ignition delay measurements and jet-stirred reactor data from literature. The flow reactor experiments were conducted with a slightly lean CH3CHO/O2 mixture highly diluted in N2 at 600–900 K and pressures of 25 and 100 bar. This is the accepted manuscript version of the published article.
Date:
April 10, 2021
Creator:
Hashemi, Hamid; Christensen, Jakob M.; Marshall, Paul & Glarborg, Peter
Object Type:
Article
System:
The UNT Digital Library
Experimental and kinetic modeling study of oxidation of acetonitrile
Article asserts that oxidation of acetonitrile has been studied in a flow reactor in the absence and presence of nitric oxide. A detailed chemical kinetic model for oxidation of acetonitrile was developed, based on a critical evaluation of data from literature. This is the accepted manuscript version of the published article.
Date:
April 10, 2021
Creator:
Alzueta, María U.; Guerrero, Marta; Millera, Angela; Marshall, Paul & Glarborg, Peter
Object Type:
Article
System:
The UNT Digital Library
Selective Noncatalytic Reduction of NOx Using Ammonium Sulfate
Article discusses how ammonium sulfate (AS) is of interest as an additive in stationary combustion plants for the simultaneous control of NOx (through selective noncatalytic reduction, SNCR) and deposition and corrosion (through sulfation of alkali chlorides). The results indicated that sulfur from ammonium sulfate is mainly released as SO3, even though SO2 is detected in increasing concentrations at temperatures above 1000 °C. This is the accepted manuscript version of the published article.
Date:
July 15, 2021
Creator:
Krum, Kristian R. K.; Jensen, Martin; Li, Songgeng; Norman, Thomas; Marshall, Paul; Wu, Hao et al.
Object Type:
Article
System:
The UNT Digital Library
Kinetic fall-off behavior for the Cl + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction
Article discusses how rate coefficients, k, for the gas-phase Cl + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction were measured over the 15–500 torr (He and N2 bath gas) pressure range at temperatures between 283 and 323 K. An atmospheric degradation mechanism for C4H2O3 is proposed based on the observed product yields and theoretical calculations of ring-opening pathways and activation barrier energies at the CBS-QB3 level of theory. This is the accepted manuscript version of the published article.
Date:
February 15, 2021
Creator:
Chattopadhyay, Aparajeo; Gierczak, Tomasz; Marshall, Paul; Papadimitriou, Vassileios C. & Burkholder, James B. (James Bart), 1954-
Object Type:
Article
System:
The UNT Digital Library
New reactions of diazene and related species for modelling combustion of amine fuels
Article discusses how potential energy surfaces for reactions involving N2H2 isomers of diazene (diimide) have been explored using density functional theory, with energies based on coupled-cluster theory. A focus is on processes that create or consume these species, and isomerization between the E (trans) and Z (cis) forms of HNNH. This is the accepted manuscript version of the published article.
Date:
September 24, 2021
Creator:
Marshall, Paul; Rawling, George R. & Glarborg, Peter
Object Type:
Article
System:
The UNT Digital Library
Development of Facultative Air Breathing in Bristlenose Plecos (Ancistrus cirrhosus)
Data collected on air breathing development in the bristlenose pleco. Bristlenose plecos breath air with a highly vascularized stomach when exposed to aquatic hypoxic conditions. This study looked at the development of this behavior and when the fish fist began to breathe air.
Date:
January 2024
Creator:
Crowder, Lauren W. & Dzialowski, Edward M. (Edward Michael)
Object Type:
Dataset
System:
The UNT Digital Library
Novel regulators of Slo2 potassium channels
Data management plan for the grant, "Novel regulators of Slo2 potassium channels"
Date:
2024-02-15/2026-01-31
Creator:
Chen, Bojun
Object Type:
Text
System:
The UNT Digital Library
Collaborative Research: Conference: Texas-Oklahoma Representations and Automorphic forms (TORA)
Data management plan for the grant, "Collaborative Research: Conference: Texas-Oklahoma Representations and Automorphic forms (TORA)."
Date:
2024-01-01/2026-12-31
Creator:
Beneish, Lea
Object Type:
Text
System:
The UNT Digital Library
CAREER: Orbital-based Descriptors for Dynamical Properties of Quantum Defects
Data management plan for the grant, "CAREER: Orbital-based Descriptors for Dynamical Properties of Quantum Defects."
Date:
2024-04-01/2029-03-31
Creator:
Wang, Yuanxi
Object Type:
Text
System:
The UNT Digital Library
Fractal structure of human and primate social networks optimizes information flow
Article describes how primate and human social groups exhibit a fractal structure that has a very limited range of preferred layer sizes. The authors calculate the size dependence of the scaling properties of complex social network models and argue that this aggregate behavior exhibits a form of collective intelligence.
Date:
June 7, 2023
Creator:
West, Bruce J.; Culbreth, Garland; Dunbar, Robin I. M. & Grigolini, Paolo
Object Type:
Article
System:
The UNT Digital Library
Evaluation of the Vibration Signal during Milling Vertical Thin-Walled Structures from Aerospace Materials
Article describes how the main functions of thin-walled structures are to reduce the weight of the finished product and to increase the rigidity of the structure. The authors compared the vibration signal for different approaches to machining thin walled-components with vertical walls made of Ti6AI4V titanium alloy and Inconel 625 nickel alloy.
Date:
July 14, 2023
Creator:
Kurpiel, Szymon; Zagrórski, Krzysztof; Skryzpkowski, Krzysztof & Brostow, Witold, 1934-
Object Type:
Article
System:
The UNT Digital Library
Guanidinium-based covalent organic framework membrane for single-acid recovery
Article discusses how, although acids are extensively used in contemporary industries, time-consuming and environmentally unfriendly processes hinder single-acid recovery from wastes containing various iconic species. The authors rationally designed a membrane with uniform angstrom-sized pore channels and built-in charge-assisted hydrogen bond donors that preferentially conducted HCl while exhibiting negligible conductance for other compounds.
Date:
June 21, 2023
Creator:
Meng, Qing-Wei; Wu, Shaochun; Liu, Mingjie; Guo, Qing; Xian, Weipeng; Zuo, Xiuhui et al.
Object Type:
Article
System:
The UNT Digital Library
Diverse values of nature for sustainability
Article describes how, twenty-five years since foundational publications on valuing ecosystems services for human well-being, addressing the global biodiversity crisis still implied confronting barriers to incorporating nature's diverse values into decision-making. The authors assert that a better understanding of how and why nature is (under)valued is more urgent than ever.
Date:
August 9, 2023
Creator:
Pascual, Unai; Balvanera, Patricia; Anderson, Christopher B.; Chaplin-Kramer, Rebecca; Christie, Michael; González-Jiménez, David et al.
Object Type:
Article
System:
The UNT Digital Library
Delayed Antarctic melt season reduces albedo feedback
Article discusses how Antarctica's response to climate change varies greatly both spatially and temporally. The authors used a 43-year record of Antarctic snow melt seasons from space-borne microwave radiometers with a machine-learning algorithm to show that both the onset and the end of the melt season are being delayed.
Date:
May 27, 2023
Creator:
Liang, Lei; Guo, Huadong; Liang, Shuang; Li, Xichen; Moore, John C.; Li, Xinwu et al.
Object Type:
Article
System:
The UNT Digital Library
A Remarkable Difference in Pharmacokinetics of Fluorinated Versus Iodinated Photosensitizers Derived from Chlorophyll-a and a Direct Correlation between the Tumor Uptake and Anti-Cancer Activity
Article says that to investigate and compare the pharmacokinetic profile and anti-cancer activity of fluorinated and iodinated photosensitizers (PSs), the 3-(1′-(o-fluorobenzyloxy)ethyl pyropheophorbide and the corresponding meta-(m-) and para (p-) fluorinated analogs (methyl esters and carboxylic acids) were synthesized. According to the authors, the nature of the delivery vehicle and tumor types showed a significant difference in uptake and long-term cure by photodynamic therapy (PDT), especially in the iodinated PS.
Date:
April 27, 2023
Creator:
Pandurang, Taur Prakash; Cacaccio, Joseph; Durrani, Farukh A.; Dukh, Mykhaylo; Alsaleh, Ajyal Z.; Sajjad, Munawwar et al.
Object Type:
Article
System:
The UNT Digital Library
Enhanced Photoluminescence and Prolonged Carrier Lifetime through Laser Radiation Hardening and Self-Healing in Aged MAPbBr3 Perovskites Encapsulated in NiO Nanotubes
Article describes how organic-inorganic perovskites hold great promise as optoelectronic semiconductors for pure color light emitting and photovoltaic devices. This paper investigates the laser radiation hardening and self-healing-induced properties of aged MAPbBr3 perovskites encapsulated in NiO nanotubes (MAPbBr3@NiO) using photoluminescence (PL) and fluorescence lifetime imaging (FLIM). After deliberately subjecting the MAPbBr3@ NiO to atmospheric conditions for two years, the sample remains remarkably stable.
Date:
August 31, 2023
Creator:
Kamau, Steve; Rodriguez, Roberto Gonzalez; Jiang, Yan; Mondragon, Araceli Herrera; Varghese, Sinto; Hurley, Noah et al.
Object Type:
Article
System:
The UNT Digital Library
Holographic Fabrication of 3D Moiré Photonic Crystals Using Circularly Polarized Laser Beams and a Spatial Light Modulator
The authors of the article state that holographic fabrication of a 3D moiré photonic crystal is very difficult due to the coexistence of the bright and dark regions, where the exposure threshold is suitable for one region but not for the other. In this paper, the authors study the holographic fabrication of 3D moiré photonic crystals using an integrated system of a single reflective optical element (ROE) and a spatial light modulator (SLM) where nine beams (four inner beams + four outer beams + central beam) are overlapped.
Date:
June 9, 2023
Creator:
Hurley, Noah; Kamau, Steve; Cui, Jingbiao & Lin, Yuankun
Object Type:
Article
System:
The UNT Digital Library
Large-Scale Synthesis of Covalent Organic Frameworks: Challenges and Opportunities
Article describes how connecting organic building blocks by covalent bonds to design porous crystalline networks has led to covalent organic frameworks (COFs), consequently transferring the flexibility of dynamic linkages from discrete architectures to extended structures. Authors state that this review article highlights the fundamental of COFs, including designing principles, coupling reactions, topologies, structural diversity, synthetic strategies, characterization, growth mechanism, and activation aspects of COFs.
Date:
July 27, 2023
Creator:
Vardhan, Harsh; Rummer, Grace; Deng, Angela & Ma, Shengqian
Object Type:
Article
System:
The UNT Digital Library
Correction: Vu et al. Specific Changes in Arabidopsis thaliana Rosette Lipids during Freezing Can Be Associated with Freezing Tolerance. Metabolites 2022, 12, 385
Article is a correction to an error in the original publication. The enzymatic step catalyzed by oxophytodienoic acid reductase 3 was misstated. A correction has been made to Section 2. Results and Discussion, Subsection 2.13. Lipids of Plants with Mutations in Lipid-Related Genes, Paragraph 1.
Date:
March 30, 2023
Creator:
Vu, Hieu Sy; Shiva, Sunitha; Samarakoon, Thilani; Li, Maoyin; Sarowar, Sujon; Roth, Mary R. et al.
Object Type:
Article
System:
The UNT Digital Library
The psychosocial burden of women seeking treatment for breast and cervical cancers in Ghana’s major cancer hospitals
Article discusses how breast and cervical cancers remain the most common cancers and the leading cause of cancer deaths in Ghana. Authors state that there is a need for liaison psychiatrists and health psychologists to assist oncologists to provide psychological support such as free and routine counselling services for cancer patients and their caregivers.
Date:
August 22, 2023
Creator:
Okyere Asante, Patience Gyamenah; Owusu, Adobea Yaa; Oppong, Joseph R.; Amegah, Kingsley E. & Nketiah-Amponsah, Edward
Object Type:
Article
System:
The UNT Digital Library
Sibling Aggression, Feeding Rates, and Hatch Rank of Nestling Red-Shouldered Hawks (Buteo lineatus)
Article describes how, in many raptor species, hatching asynchrony results in a size hierarchy among nestlings, which may facilitate brood reduction by means of sibling aggression-induced mortality, especially in times of low food resources. The authors studied the influence of hatch rank, brood size, and brood age on aggression and feeding rates among Red-shouldered Hawk (Buteo lineatus) nestlings in suburban southwestern Ohio.
Date:
May 25, 2023
Creator:
Miller, Sara J.; Dykstra, Cheryl R.; Rolland, Virginie; Simon, Melinda M.; Hays, Jeffrey L. & Bednarz, James C.
Object Type:
Article
System:
The UNT Digital Library
Bibliometric Analysis of Integrated Pest Management Practices
Article discusses how integrated pest management (IPM) is a wide-ranging strategy that involves tactics for the structural control of pests and diseases, also known as integrated pest control (IPC). The authors' prime aim of this study is to explore global scientific publications regarding integrated pest management and map the recent global trends in this innovative research domain, thereby providing future research directions based on dynamic observations.
Date:
July 26, 2023
Creator:
Zhou, Xi; Yang, Chongxi; Yesmin, Sabina; Islam, Md Ashraful & Sarkar, Apurbo
Object Type:
Article
System:
The UNT Digital Library