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Developmental phenotypic plasticity helps bridge stochastic weather events associated with climate change

This article posits that the frequently abrupt environmental changes accompanying much longer-term general climate change require consideration of the true nature of environmental change coupled with an expansion of focus to consider developmental phenotypic plasticity.
Date: May 10, 2018
Creator: Burggren, Warren W.
Object Type: Article
System: The UNT Digital Library
Pulmonary compliance and lung volume varies with ecomorphology in anuran amphibians: implications for ventilatory-assisted lymph flux (open access)

Pulmonary compliance and lung volume varies with ecomorphology in anuran amphibians: implications for ventilatory-assisted lymph flux

This article examining the correlation between pulmonary compliance, lung volume, and lymph flux rates in anurans. The findings of this article suggest that lymph mobilization capacity may explain some of the variation in pulmonary compliance and lung volume in anurans.
Date: October 1, 2011
Creator: Hedrick, Michael; Hillman, Stanley S.; Drewes, Robert C. & Withers, Philip C.
Object Type: Article
System: The UNT Digital Library
Xenopus and the art of oxygen maintenance (open access)

Xenopus and the art of oxygen maintenance

This column article discusses the impact of Robert Boutillier and Graham Shelton's 1986 Journal of Experimental Biology paper "Gas exchange, storage and transport in voluntarily diving Xenopus laevis."
Date: November 15, 2017
Creator: Tattersall, Glenn & Burggren, Warren W.
Object Type: Article
System: The UNT Digital Library
The membrane pacemaker hypothesis: novel tests during the ontogeny of endothermy (open access)

The membrane pacemaker hypothesis: novel tests during the ontogeny of endothermy

Article explores the ‘membrane pacemaker’ hypothesis which proposes a biochemical explanation for among-species variation in resting metabolism, based on the positive correlation between membrane docosahexaenoic acid (DHA) and metabolic rate. The authors tested this hypothesis using a novel model, altricial red-winged blackbird nestlings, predicting that the proportion of DHA in muscle and liver membranes should increase with the increasing metabolic rate of the nestling as it develops endothermy. In support of the membrane pacemaker hypothesis, DHA proportions increased in membranes from pectoralis muscle, muscle mitochondria and liver during post-hatch development. By contrast, elevated dietary DHA had no effect on resting metabolic rate, despite causing significant changes to membrane lipid composition.
Date: March 29, 2018
Creator: Price, Edwin R.; Sirsat, Tushar S.; Sirsat, Sarah K. G.; Curran, Thomas; Venables, Barney J. & Dzialowski, Edward M. (Edward Michael)
Object Type: Article
System: The UNT Digital Library
Parental stressor exposure simultaneously conveys both adaptive and maladaptive larval phenotypes through epigenetic inheritance in the zebrafish (Danio rerio) (open access)

Parental stressor exposure simultaneously conveys both adaptive and maladaptive larval phenotypes through epigenetic inheritance in the zebrafish (Danio rerio)

This article is a study using crude oil as an example of an environmental stressor in adult zebrafish. The offspring obtained were then assessed for transgenerational epigenetic transfer of oil-induced phenotypes. The authors conclude that epigenetic transgenerational inheritance can lead to an immediate and simultaneous inheritance of both beneficial and maladaptive traits in a large proportion of the F1 larvae. The adaptive responses may help fish populations survive when facing transient environmental stressors.
Date: September 5, 2019
Creator: Bautista, Naim M. & Burggren, Warren W.
Object Type: Article
System: The UNT Digital Library
Contribution of active atrial contraction to cardiac output in anesthetized American alligators (Alligator mississippiensis) (open access)

Contribution of active atrial contraction to cardiac output in anesthetized American alligators (Alligator mississippiensis)

Article describes study which investigated the importance of atrial contraction in filling of the ventricle in American alligators (Alligator mississippiensis) by bypassing both atria (with the use of ligatures to prevent atrial filling) and measuring the resultant effects on cardiac output in anesthetized animals.
Date: April 30, 2018
Creator: Williams, Joyce E.; Crossley, Janna; Elsey, Ruth M.; Wang, Tobias & Crossley, Dane A., II
Object Type: Article
System: The UNT Digital Library
Regulation of blood flow in the pulmonary and systemic circuits during submerged swimming in common snapping turtle (Chelydra serpentina) (open access)

Regulation of blood flow in the pulmonary and systemic circuits during submerged swimming in common snapping turtle (Chelydra serpentina)

This article is a study investigating the blood flow patterns and heart rate in surfacing and during graded, submerged swimming activity in common snapping turtles. The effects of beta-adrenergic and cholinergic receptor blockade on blood flow and heart rate during these activities are also studied.
Date: August 16, 2019
Creator: Reynolds Kirby, Amanda; Smith, Brandt R. & Crossley, Dane A., II
Object Type: Article
System: The UNT Digital Library
Beyond the wall: High-throughput quantification of plant soluble and cell-wall bound phenolics by liquid chromatography tandem mass spectrometry (open access)

Beyond the wall: High-throughput quantification of plant soluble and cell-wall bound phenolics by liquid chromatography tandem mass spectrometry

Article describes a study in which a novel high-throughput ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC–MS/MS) method was established to quantify the levels of 19 flavonoids and 15 other phenolic compounds, including acids, aldehydes, and alcohols.
Date: December 26, 2018
Creator: Cocuron, Jean-Christophe; Casas, Maria Isabel; Yang, Fan & Grotewold, Erich
Object Type: Article
System: The UNT Digital Library
Embryonic developmental oxygen preconditions cardiovascular functional response to acute hypoxic exposure and maximal β-adrenergic stimulation of anesthetized juvenile American alligators (Alligator mississippiensis) (open access)

Embryonic developmental oxygen preconditions cardiovascular functional response to acute hypoxic exposure and maximal β-adrenergic stimulation of anesthetized juvenile American alligators (Alligator mississippiensis)

Article investigating the effect of embryonic hypoxia on the cardiovascular phenotype of 4-year-old American alligators (Alligator mississippiensis). The findings indicate that embryonic hypoxia in crocodilians alters the cardiovascular phenotype, changing the juvenile response to acute hypoxia and β-adrenergic stimulation.
Date: January 26, 2018
Creator: Smith, Brandt R.; Crossley, Janna; Elsey, Ruth M.; Hicks, James W. & Crossley, Dane A., II
Object Type: Article
System: The UNT Digital Library
Does the left aorta provide proton-rich blood to the gut when crocodilians digest a meal? (open access)

Does the left aorta provide proton-rich blood to the gut when crocodilians digest a meal?

Article measuring blood parameters in the left aortae and atria of crocodilians. The findings do not support the hypothesis that a R–L shunt serves to deliver CO2 for the gastrointestinal system after feeding in crocodilians.
Date: February 4, 2019
Creator: Conner, Justin L.; Crossley, Janna; Elsey, Ruth M.; Nelson, Derek; Wang, Tobias & Crossley, Dane A., II
Object Type: Article
System: The UNT Digital Library
The osmorespiratory compromise in the euryhaline killifish: water regulation during hypoxia (open access)

The osmorespiratory compromise in the euryhaline killifish: water regulation during hypoxia

Article studying water regulation during hypoxia in euryhaline killifish.
Date: September 24, 2019
Creator: Mager, Edward M.; Wood, Chris M.; Ruhr, Ilan M.; Schauer, Kevin L.; Wang, Yadong; McDonald, M. Danielle et al.
Object Type: Article
System: The UNT Digital Library
Sarcoplasmic reticulum Ca²⁺-ATPase (SERCA) activity during the transition to endothermy in an altricial bird (open access)

Sarcoplasmic reticulum Ca²⁺-ATPase (SERCA) activity during the transition to endothermy in an altricial bird

Article describes SERCA activity in the pectoralis muscle and heart ventricle of red-winged blackbird (Agelaius phoeniceus) nestlings, fledglings and adults. Additionally, using a diet manipulation, the authors tested the hypothesis that muscle SERCA activity is affected by dietary fatty acid composition, as has been shown in some previous studies.
Date: June 28, 2019
Creator: Price, Edwin R.; Sirsat, Tushar S.; Sirsat, Sarah K. G. & Dzialowski, Edward M. (Edward Michael)
Object Type: Article
System: The UNT Digital Library
Commentary on “Uncover the Effect of Solvent and Temperature on Solid-Liquid Equilibrium Behavior of L-Norvaline” (open access)

Commentary on “Uncover the Effect of Solvent and Temperature on Solid-Liquid Equilibrium Behavior of L-Norvaline”

This article provides a commentary on several sets of reported curve-fit parameters for the Modified Apelblat model that do not correctly back-calculate the observed solubility behavior of L-norvaline in the binary aqueous-alcohol solvent mixtures.
Date: September 18, 2017
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Commentary on “Experimental Measurements and Equilibrium Study of Functional D-Sorbitol in Good and Anti-Solvent Binary Mixtures” (open access)

Commentary on “Experimental Measurements and Equilibrium Study of Functional D-Sorbitol in Good and Anti-Solvent Binary Mixtures”

This article provides a commentary on the published equation coefficients for mathematically describing the solubility behavior of D-sorbitol in binary acetonitrile + ethanol solvent mixtures using the modified Apelblat, Combined Nearly Ideal Binary Solvent/Redlich-Kister (CNIBS/R-K) and Jouyban-Acree models.
Date: June 17, 2017
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Commentary on “Studies on Molar Volume, Dielectric Properties and Refractive Indices of Cyanex 923 + Benzene/Xylene at 300 K” (open access)

Commentary on “Studies on Molar Volume, Dielectric Properties and Refractive Indices of Cyanex 923 + Benzene/Xylene at 300 K”

This article provides a commentary on Redlich-Kister equation coefficients for binary benzene + cyanex 923 and xylene + cyanex 923.
Date: June 21, 2017
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library

Further Calculations on Solubility of 2-Chloro-3-(Trifluoromethyl)Pyridine in Ethanol + 1-Propanol Solvent Mixtures at Various Temperatures

This article reports on the reanalysis of reported calculations on solubility data of 2-chloro-3-(trifluoromethyl)pyridine in binary ethanol + 1-propanol solvent mixtures at various temperatures, and several additional points regarding the correlations.
Date: May 25, 2017
Creator: Jouyban, Abolghasem; Martínez, Fleming & Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Comments Concerning “Solubility and Dissolution Thermodynamic Properties of 1,6-Bis[3-(3,5-Di-Tert-Butyl-4-Hydroxyphenyl) Propionamido]Hexane in Pure Solvents and Binary Solvent Mixtures” (open access)

Comments Concerning “Solubility and Dissolution Thermodynamic Properties of 1,6-Bis[3-(3,5-Di-Tert-Butyl-4-Hydroxyphenyl) Propionamido]Hexane in Pure Solvents and Binary Solvent Mixtures”

This article comments on mathematical errors pertaining to published equation coefficients for the modified Apelblat and for the polynomial equation based on the Combined Jouyban-Acree and modified Apelblat models.
Date: February 16, 2018
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Effects of Strategically Placed Water Droplets on Monolayer Growth of Molybdenum Disulfide (open access)

Effects of Strategically Placed Water Droplets on Monolayer Growth of Molybdenum Disulfide

This article presents results of molybdenum disulfide monolayer (MoS₂) growth by strategically placing water droplets on the growth substrate and/or in the source prior to its loading in the growth chamber.
Date: November 21, 2018
Creator: Jiang, Yan; Lin, Yuankun; Cui, Jingbiao & Philipose, Usha
Object Type: Article
System: The UNT Digital Library
Concept Inventory Development Reveals Common Student Misconceptions about Microbiology (open access)

Concept Inventory Development Reveals Common Student Misconceptions about Microbiology

This article identifies misconceptions in microbiology held by undergraduate students upon entry into an introductory, general microbiology course.
Date: October 30, 2017
Creator: Briggs, Amy G.; Hughes, Lee E.; Brennan, R. E.; Buchner, John; Horak, Rachel E. A.; Katz-Amburn, D. Sue et al.
Object Type: Article
System: The UNT Digital Library
Development, Validation, and Application of the Microbiology Concept Inventory (open access)

Development, Validation, and Application of the Microbiology Concept Inventory

This article describes the creation and validation of a new microbiology concept inventory using the American Society for Microbiology Curriculum Guidelines.
Date: October 5, 2017
Creator: Paustian, Timothy D.; Briggs, Amy G.; Brennan, R. E.; Boury, Nancy; Buchner, John; Harris, Shannon et al.
Object Type: Article
System: The UNT Digital Library
UV and infrared absorption spectra and 248 nm photolysis of maleic anhydride (C₄H₂O₃) (open access)

UV and infrared absorption spectra and 248 nm photolysis of maleic anhydride (C₄H₂O₃)

This article investigates maleic anhydride (C₂H₂(CO)₂O, Furan-2,5-dione) that is emitted into or formed in the atmosphere during bio-mass burning events as well as being a photochemical degradation product of some aromatic volatile organic compounds. The photochemical fate of maleic anhydride, however, is presently not well enough characterized to enable modeling of its impact on the environment and human health. In this study, the room temperature UV and infrared absorption spectra of maleic anhydride were measured and quantified using several complementary calibration methods.
Date: July 2, 2019
Creator: Marshall, Paul; Papadimitriou, Vassileios C.; Papanastasiou, Dimitrios K.; Roberts, James M. & Burkholder, James B. (James Bart), 1954-
Object Type: Article
System: The UNT Digital Library
Atomic layer deposition of h-BN(0001) multilayers on Ni(111) and chemical vapor deposition of graphene on h-BN(0001)/Ni(111) (open access)

Atomic layer deposition of h-BN(0001) multilayers on Ni(111) and chemical vapor deposition of graphene on h-BN(0001)/Ni(111)

Article studying atomic layer deposition. In situ direct, epitaxial growth of multilayers of hexagonal boron nitride (h-BN) and graphene without physical transfer is of significant interest for the scalable production of graphene/h-BN heterostructures for device applications. Deposition on magnetic substrates is of particular interest for spin tunneling applications. X-ray photoelectron spectroscopy and low energy electron diffraction demonstrate epitaxial atomic-layer deposition (ALD) of multilayer h-BN(0001) on Ni(111) and subsequent deposition of azimuthally-aligned multilayer graphene on h-BN(0001)/Ni(111) by chemical vapor deposition. Boron nitride ALD was accomplished with alternating cycles of BCl₃/NH₃ at a 600 K substrate temperature, and subsequent annealing in ultrahigh vacuum. Subsequent deposition of graphene was achieved by chemical vapor deposition using ethylene (CH₂CH₂) at 1000 K.
Date: September 17, 2019
Creator: Kelber, Jeffry A.; Jones, Jessica; Pilli, Aparna; Lee, Veronica; Beatty, John; Beauclair, Brock et al.
Object Type: Article
System: The UNT Digital Library
Hydrogenase Biomimetics with Redox-Active Ligands: Synthesis, Structure, and Electrocatalytic Studies on [Fe₂(CO)₄(κ²-dppn)(µ-edt)] (edt = Ethanedithiolate; dppn = 1,8-bis(Diphenylphosphino)Naphthalene) (open access)

Hydrogenase Biomimetics with Redox-Active Ligands: Synthesis, Structure, and Electrocatalytic Studies on [Fe₂(CO)₄(κ²-dppn)(µ-edt)] (edt = Ethanedithiolate; dppn = 1,8-bis(Diphenylphosphino)Naphthalene)

This article reports the preparation and characterisation of the simple dppn complex,[Fe2(CO)4(κ2-dppn)(µ-edt)], together with an investigation of its proton-reduction ability.
Date: November 20, 2018
Creator: Ghosh, Shishir; Rana, Shahed; Hollingsworth, Nathan; Richmond, Michael G.; Kabir, Shariff E. & Hogarth, Graeme
Object Type: Article
System: The UNT Digital Library
Dual-Band High Efficiency Terahertz Meta-Devices Based on Reflective Geometric Metasurfaces (open access)

Dual-Band High Efficiency Terahertz Meta-Devices Based on Reflective Geometric Metasurfaces

Article proposing a novel reflective building block (unit cell) to work at two arbitrary terahertz frequency bands with independent phase control at each band.
Date: April 18, 2019
Creator: Lin, Yuankun; Wang, Tailei; Xie, Rensheng; Zhu, Shouzheng; Gao, Jianjun; Xin, Mingbo et al.
Object Type: Article
System: The UNT Digital Library