Resource Type

Long-range nonspreading propagation of sound beam through periodic layered structure (open access)

Long-range nonspreading propagation of sound beam through periodic layered structure

Article analyzing dispersion of sound in a solid-fluid layered structure and found a flex point on the isofrequency curve where D vanishes for given direction of propagation and frequency. Nonspreading propagation is experimentally observed in a water steel lattice of 75 periods (~1 meter long) and occurs in the regime of anomalous dispersion and strong acoustic anisotropy when the effective mass along periodicity is close to zero. Under these conditions the incoming beam experiences negative refraction of phase velocity leading to backward wave propagation. The observed effect is explained using a complete set of dynamical equations and our effective medium theory.
Date: September 2, 2020
Creator: Zubov, Yurii; Djafari-Rouhani, Bahram; Jin, Yuqi; Sofield, Mathew; Walker, Ezekiel; Neogi, Arup et al.
System: The UNT Digital Library
Advanced modeling of materials with PAOFLOW 2.0: New features and software design (open access)

Advanced modeling of materials with PAOFLOW 2.0: New features and software design

This article describes the recent re-design of the code and the new features and improvements in performance of PAOFLOW, a software tool that constructs tight-binding Hamiltonians from self-consistent electronic wavefunctions by projecting onto a set of atomic orbitals.
Date: September 2, 2021
Creator: Cesaroli, Frank T.; Supka, Andrew; Jayaraj, Anooja; Costa, Marcio; Siloi, Ilaria; Sławińska, Jagoda et al.
System: The UNT Digital Library
Simulation of the formation of antihydrogen via magnetobound positronium (open access)

Simulation of the formation of antihydrogen via magnetobound positronium

This article simulates Antihydrogen formation involving magnetobound positronium by computing classical trajectories.
Date: September 9, 2021
Creator: Aguirre, F. F. & Ordonez, Carlos A.
System: The UNT Digital Library
Improved Campephiline detection: An experiment conducted with the Magellanic Woodpecker (open access)

Improved Campephiline detection: An experiment conducted with the Magellanic Woodpecker

Article describes a study which tried to determine which of three methods (useing a drumming device to simulate a double‐knock (i.e., territorial acoustical signal), broadcasting a territorial call, or passively listening) best results in a detection of Magellanic Woodpeckers (Campephilus magellanicus ), and if weather variables influence detection probability.
Date: September 27, 2019
Creator: Wynia, Amy L.; Rolland, Virginie & Jiménez, Jaime E.
System: The UNT Digital Library
Existence of Infinitely Many Solutions for Singular Semilinear Problems on Exterior Domains (open access)

Existence of Infinitely Many Solutions for Singular Semilinear Problems on Exterior Domains

Article proving the existence of infinitely many radial solutions of ∆𝓊+𝐾(𝓇) ƒ (𝓊) = 0 on the exterior of the ball of radius R > 0, BR, centered at the origin in ℝᴺ with u = 0 on ∂BR and lim/r→∞ 𝓊(𝓇) = 0 where N > 2, f is odd with f < 0 on (0, β), f > 0 on (β, ∞), f is superlinear for large u, ƒ(𝓊) ∼ −1/(|𝓊|𝘲⁻¹𝓊) with 0 < q < 1 for small u, and 0 < 𝐾(𝓇) ≤ 𝐾₁/r∝ with 𝑁 + q(𝑁 − 2) < ∝ < 2(𝑁− 1) for large r.
Date: March 9, 2018
Creator: Iaia, Joseph A.
System: The UNT Digital Library
Existence and Nonexistence of Solutions for Sublinear Equations on Exterior Domains (open access)

Existence and Nonexistence of Solutions for Sublinear Equations on Exterior Domains

This article studies radial solutions of Δu + K(r)ƒ(u) = 0 on the exterior of the ball of radius R > 0, BR, centered at the origin in ℝN with u = 0 on @BR where ƒ is odd with ƒ < 0 on (0; β), ƒ > 0 on (β;∞), f(u) ~ uᵖ with 0 < p < 1 for large u and K(r) ~ r⁻ᵅ for large r.
Date: September 13, 2017
Creator: Iaia, Joseph A.
System: The UNT Digital Library
Developmental programming of DNA methylation and gene expression patterns is associated with extreme cardiovascular tolerance to anoxia in the common snapping turtle (open access)

Developmental programming of DNA methylation and gene expression patterns is associated with extreme cardiovascular tolerance to anoxia in the common snapping turtle

This article explores DNA methylation's role in the regulation of gene expression in reptiles. Results show that embryonic hypoxia programs DNA methylation and gene expression patterns and that these changes are associated with enhanced cardiac anoxia tolerance in snapping turtles later in life.
Date: September 6, 2021
Creator: Ruhr, Ilan; Bierstedt, Jacob; Rhen, Turk; Das, Debojyoti; Singh, Sunil Kumar; Miller, Solielle et al.
System: The UNT Digital Library
Editorial: Advances in Plant-Hemipteran Interactions (open access)

Editorial: Advances in Plant-Hemipteran Interactions

This editorial discusses sixteen manuscripts which address the physiology and molecular biology of plant-hemipteran interactions at different levels.
Date: September 21, 2017
Creator: Shah, Jyoti & Walling, Linda
System: The UNT Digital Library
Complex Periodicity and Synchronization (open access)

Complex Periodicity and Synchronization

Article explores experimental walking synchronization and complexity restoration. The main goal is to establish a physiological foundation of these important results based on the recent advances on the dynamics of the brain, interpreted as a system at criticality.
Date: September 30, 2020
Creator: Grigolini, Paolo; Mahmoodi, Korosh & West, Bruce J.
System: The UNT Digital Library
Event-Driven Deep Learning for Edge Intelligence (EDL-EI) (open access)

Event-Driven Deep Learning for Edge Intelligence (EDL-EI)

Article on deep-learning framework for edge intelligence EDL-EI (event-driven deep learning for edge intelligence). To verify the proposed framework, the authors include a case study of air-quality scenarios based for the most polluted cities in South Korea and China.
Date: September 8, 2021
Creator: Shah, Sayed Khushal; Tariq, Zeenat; Lee, Jeehwan & Lee, Yugyung
System: The UNT Digital Library
Altered embryonic development in northern bobwhite quail (Colinus virginianus) induced by pre-incubation oscillatory thermal stresses mimicking global warming predictions (open access)

Altered embryonic development in northern bobwhite quail (Colinus virginianus) induced by pre-incubation oscillatory thermal stresses mimicking global warming predictions

This article describes the exposure of freshly laid bobwhite quail eggs to one of five thermal regimes during a 12 day pre-incubation period.
Date: March 31, 2017
Creator: Reyna, Kelly S. & Burggren, Warren W.
System: The UNT Digital Library
The Stability of Metallic MoS₂ Nanosheets and Their Property Change by Annealing (open access)

The Stability of Metallic MoS₂ Nanosheets and Their Property Change by Annealing

This article focuses on the effects of mild annealing on the structural and physical properties of the MoS₂ by heating the nanosheets in air and vacuum up to 350 °C. It was found that the annealing leads to an increase in resistivity for the nanosheets by 3 orders of magnitude, the appearance of two absorption bands in the visible range, and a hydrophilic to hydrophobic change in the surface wetting properties. Overall, this study provides another way to control the electrical, optical, and surface properties of MoS₂ nanosheets for fulfilling the needs of various applications.
Date: September 24, 2019
Creator: Li, Li; Chen, Jiyang; Wu, Keyue; Cao, Chunbin; Shi, Shiwei & Cui, Jingbiao
System: The UNT Digital Library
Structure and Electronic Properties of InSb Nanowires Grown in Flexible Polycarbonate Membranes (open access)

Structure and Electronic Properties of InSb Nanowires Grown in Flexible Polycarbonate Membranes

The article explores the various factors that affect nucleation and nanowire growth. A dense array of vertically aligned indium antimonide (InSb) nanowires with high aspect ratio were grown in the pores of a track-etched polycarbonate membrane via a one-step electrochemical method.
Date: September 5, 2019
Creator: Singh, Abhay; Roccapriore, Kevin M.; Algarni, Zaina; Salloom, Riyadh; Golden, Teresa Diane, 1963- & Philipose, Usha
System: The UNT Digital Library
Multi-omic characterization of bifunctional peroxidase 4-coumarate 3-hydroxylase knockdown in Brachypodium distachyon provides insights into lignin modification associated pleiotropic effects (open access)

Multi-omic characterization of bifunctional peroxidase 4-coumarate 3-hydroxylase knockdown in Brachypodium distachyon provides insights into lignin modification associated pleiotropic effects

Article discusses how a bifunctional peroxidase enzyme, 4-coumarate 3-hydroxylase (C3H/APX), provides a parallel route to the shikimate shunt pathway for the conversion of 4-coumarate to caffeate in the early steps of lignin biosynthesis. Here, a multi-omic approach was used to characterize molecular changes resulting from C3H/APX-KD associated lignin modification and negative growth phenotype in Brachypodium distachyon.
Date: September 28, 2022
Creator: Shrestha, Him K.; Fichman, Yosef; Engle, Nancy L.; Tschaplinski, Timothy J.; Mittler, Ron; Dixon, R. A. et al.
System: The UNT Digital Library
Metal-organic framework nanocrystal-derived hollow porousmaterials: Synthetic strategies and emerging applications (open access)

Metal-organic framework nanocrystal-derived hollow porousmaterials: Synthetic strategies and emerging applications

Article discusses how the fascinating, functional properties and applications of MOF-derived hollow porous materials primarily lie in their chemical composition, hollow character, and unique porous structure. The authors discuss a comprehensive overview of the synthetic strategies and emerging applications of hollow porous materials derived from MOF-based templates and/or precursors.
Date: September 13, 2022
Creator: Lui, Xiaolu; Verma, Guarav; Chen, Zhongshan; Hu, Baowei; Huang, Qifei; Yang, Hui et al.
System: The UNT Digital Library
Habitat amount or landscape configuration: Emerging HotSpot analysis reveals the importance of habitat amount for a grassland bird in South Dakota (open access)

Habitat amount or landscape configuration: Emerging HotSpot analysis reveals the importance of habitat amount for a grassland bird in South Dakota

The authors of the article used pheasants (Phasianus colchicus) across South Dakota, USA as a model species to identify environmental factors driving spatiotemporal variation in population productivity. They found that the amount of grassland at a local spatial scale was the primary factor influencing an area being a HotSpot.
Date: September 26, 2022
Creator: Harsh, Sprih; Lonsinger, Robert C. & Gregory, Andrew
System: The UNT Digital Library
Brain Inflammation, Blood Brain Barrier dysfunction and Neuronal Synaptophysin Decrease after Inhalation Exposure to Titanium Dioxide Nano-aerosol in Aging Rats (open access)

Brain Inflammation, Blood Brain Barrier dysfunction and Neuronal Synaptophysin Decrease after Inhalation Exposure to Titanium Dioxide Nano-aerosol in Aging Rats

This article focuses on the consequences of TiO₂ distribution on the central nervous system and particularly on the blood-brain barrier functions.
Date: June 15, 2017
Creator: Disdier, Clémence; Chalansonnet, Monique; Gagnaire, François; Gaté, Laurent; Cosnier, Frédéric; Devoy, Jérôme et al.
System: The UNT Digital Library
An “ideal lignin” facilitates full biomass utilization (open access)

An “ideal lignin” facilitates full biomass utilization

This article describes the ideal nature of the Catechyl lignin (C-lignin) via a revised compositional characterization of the vanilla seed coat fiber, new features of the C-lignin's reactivity and stability, and successful attempts at converting it to monomers in near-quantitative yields.
Date: September 28, 2018
Creator: Li, Yanding; Shuai, Li; Kim, Hoon; Hussain Motagamwala, Ali; Mobley, Justin K.; Yue, Fengxia et al.
System: The UNT Digital Library
Mechanical Properties of Chemically Modified Clay (open access)

Mechanical Properties of Chemically Modified Clay

Article uses first principles methods to compare the mechanical properties of lizardite Mg3(Si2O5)(OH)4, a polymorph of serpentine family, with the new compounds derived by substituting Mg ions with isovalent elements from different chemical groups.
Date: September 23, 2019
Creator: Gusmão, M. S.; Gopal, Priya; Siloi, Ilaria; Curtarolo, Stefano; Fornari, Marco & Buongiorno Nardelli, Marco
System: The UNT Digital Library
Tunable Hybrid Phononic Crystal Lens Using Thermo-Acoustic Polymers (open access)

Tunable Hybrid Phononic Crystal Lens Using Thermo-Acoustic Polymers

Article describes a study where a tunable hybrid solid ultrasonic lens is realized by combining a PnC lens with PVA-PNIPAm thermoacoustic hydrogel to modify the transmission and dispersion properties of transient acoustic waves.
Date: September 30, 2019
Creator: Walker, Ezekiel; Reyes-Contreras, Delfino; Jin, Yuqi & Neogi, Arup
System: The UNT Digital Library
GAW20: methods and strategies for the new frontiers of epigenetics and pharmacogenomics (open access)

GAW20: methods and strategies for the new frontiers of epigenetics and pharmacogenomics

Article presents an overview of the data sets and the contributions analyzing data related to human lipid-related phenotypes, DNA methylation, and single-nucleotide markers in a study involving a pharmaceutical intervention.
Date: September 17, 2018
Creator: Tintle, Nathan L.; Fardo, David W.; de Andrade, Mariza; Aslibekyan, Stella; Bailey, Julia N.; Bermejo, Justo Lorenzo et al.
System: The UNT Digital Library
State of the world's raptors: Distributions, threats, and conservation recommendations (open access)

State of the world's raptors: Distributions, threats, and conservation recommendations

Article exploring the International Union for the Conservation of Nature's Red List to examine the conservation status, distributions, threats, and conservation recommendations for all 557 raptor species.
Date: September 6, 2018
Creator: McClure, Christopher J.W.; Westrip, James R.S.; Johnson, Jeff A.; Schulwitz, Sarah; Virani, Munir Z.; Davies, Robert et al.
System: The UNT Digital Library
A dynamic model of lignin biosynthesis in Brachypodium distachyon (open access)

A dynamic model of lignin biosynthesis in Brachypodium distachyon

Article proposes a dynamic mathematical model that integrates various datasets and other information regarding the lignin pathway in Brachypodium distachyon and permits explanations for some counterintuitive observations.
Date: September 19, 2018
Creator: Faraji, Mojdeh; Fonseca, Luis L.; Escamilla-Treviño, Luis; Barros-Rios, Jaime; Engle, Nancy L.; Yang, Zamin K. et al.
System: The UNT Digital Library
Formal oxo- and aza-[3 + 2] reactions of α-enaminones and quinones: a double divergent process and the roles of chiral phosphoric acid and molecular sieves (open access)

Formal oxo- and aza-[3 + 2] reactions of α-enaminones and quinones: a double divergent process and the roles of chiral phosphoric acid and molecular sieves

Article develops a double divergent process for the reaction of α-enaminones with quinones through facile manipulation of catalyst and additive, leading to structurally completely different products.
Date: September 21, 2020
Creator: Luo, Weiwei; Sun, Zhicheng; Fernando, E. H. Nisala; Nesterov, Vladimir N.; Cundari, Thomas R., 1964- & Wang, Hong
System: The UNT Digital Library