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ALMA Observations of Quasar Host Galaxies at z ≃ 4.8
Article presents ALMA Band 7 data of the [C ıı] 𝜆157.74 𝜇m emission line and underlying far-IR (FIR) continuum for 12 luminous quasars at 𝓏 ≃ 4.8 powered by fast-growing supermassive black holes (SMBHs).
Date:
May 27, 2020
Creator:
Shemmer, Ohad; Nguyen, Nathen H.; Lira, Paulina; Trakhtenbrot, Benny; Netzer, Hagai; Cicone, Claudia et al.
Object Type:
Article
System:
The UNT Digital Library
Workflow for the Quantification of Soluble and Insoluble Carbohydrates in Soybean Seed
This article develops and validates a sequential protocol for quantifying reserve and structural carbohydrates in soybean seed. It was successfully applied to eight soybean genotypes harvested from two locations, and the resulting correlations of carbohydrate and oil or protein are presented. This methodology has the potential not only to guide soybean cultivar optimization processes but also to be expanded to other crops with only slight modifications.
Date:
July 30, 2020
Creator:
Moretti, Ademar; Arias, Cintia L.; Mozzoni, Leandro A.; Chen, Pengyin; McNeece, Brant T.; Mian, M. A. Rouf et al.
Object Type:
Article
System:
The UNT Digital Library
Heterogeneous Distribution of Erucic Acid in Brassica napus Seeds
Article describes study examining low- and high-erucic acid accessions of B. napus seeds for the distribution of erucic acid-containing lipids and the gene transcripts encoding the enzymes involved in pathways for its incorporation into triacylglycerols (TAGs) across the major tissues of the seeds.
Date:
January 29, 2020
Creator:
Lu, Shaoping; Aziz, Mina; Sturtevant, Drew; Chapman, Kent Dean & Guo, Liang
Object Type:
Article
System:
The UNT Digital Library
POSMM: an efficient alignment-free metagenomic profiler that complements alignment-based profiling
Article presents POSMM, Python-Optimized Standard Markov Model classifier, which is a new incarnation of the Markov model approach to metagenomic sequence analysis. The authors claim that by combining POSMM with ultrafast classifiers such as Kraken2, their complementary strengths can be leveraged to produce higher overall accuracy in metagenomic sequence classification than by either as a standalone classifier. POSMM is a user-friendly and highly adaptable tool designed for broad use by the metagenome scientific community.
Date:
March 8, 2023
Creator:
Burks, David J.; Pusadkar, Vaidehi & Azad, Rajeev K.
Object Type:
Article
System:
The UNT Digital Library
Urban edge trees: Urban form and meteorology drive elemental carbon deposition to canopies and soils
Article asserts that urban tree canopies are a significant sink for atmospheric elemental carbon (EC)--and air pollutant that is a powerful climate-forcing agent and threat to human health. The authors' findings indicate that complex configurations of roads, buildings, and vegetation produce “urban edge trees” that contribute to heterogeneous EC deposition patterns across urban systems, with implications for greenspace planning.
Date:
September 27, 2022
Creator:
Ponette-González, Alexandra G.; Chen, Dongmei; Elderbrock, Evan; Rindy, Jenna E.; Barrett, Tate E.; Luce, Brett W. et al.
Object Type:
Article
System:
The UNT Digital Library
Growth of Highly-Ordered Metal Nanoparticle Arrays in the Dimpled Pores of an Anodic Aluminum Oxide Template
Article presents a reliable, scalable, and inexpensive technology for the fabrication of ordered arrays of metal nanoparticles with large areal coverage on various substrates. Using a simple model, the experimental results were interpreted and supported by numerical estimations.
Date:
November 8, 2022
Creator:
Farmer, Gavin; Abraham, James; Littler, Chris; Syllaios, A. J. & Philipose, Usha
Object Type:
Article
System:
The UNT Digital Library
Covalency in Fe2O3 and FeO: Consequences for XPS satellite intensity
Article examines the covalent character of the interaction between the metal cation and the oxygen ligands for two Fe oxides with different nominal oxidation states, Fe(II)O, and Fe(III)₂O₃.
Date:
November 17, 2020
Creator:
Bagus, Paul S.; Nelin, Connie J.; Brundle, C. R.; Crist, B. Vincent; Lahiri, N. & Rosso, Kevin M.
Object Type:
Article
System:
The UNT Digital Library
Plasma modification of vanadium oxynitride surfaces: Characterization by in situ XPS experiments and DFT calculations
Article reports XPS and DFT findings regarding the O₂ plasma, NH₃ plasma, and NH₃+O₂ plasma treatment of sputter deposited vanadium oxynitride films.
Date:
October 13, 2020
Creator:
Osonkie, A.; Lee, V.; Chukwunenye, P.; Cundari, Thomas R., 1964- & Kelber, Jeffry A.
Object Type:
Article
System:
The UNT Digital Library
Recurrent urinary tract infection and estrogen shape the taxonomic ecology and function of the postmenopausal urogenital microbiome
Article describes how postmenopausal women are severely affected by recurrent urinary tract infection (rUTI). The authors perform shotgun metagenomics and advanced culture on urine from a controlled cohort of postmenopausal women to identify urogenital microbiome compositional and function changes linked to rUTI susceptibility.
Date:
October 18, 2022
Creator:
Neugent, Michael D.; Kumar, Ashwani; Hulyalkar, Neha V.; Lutz, Kevin C.; Nguyen, Vivian H.; Fuentes, Jorge L. et al.
Object Type:
Article
System:
The UNT Digital Library
Biosynthesis of 6-Hydroxymellein Requires a Collaborating Polyketide Synthase-like Enzyme
This article investigates a new architecture for iterative Type I polyketide synthases (PKS) from fungi.
Date:
May 10, 2021
Creator:
Kahlert, Lukas; Villanueva, Miranda; Cox, Russell J. & Skellam, Elizabeth
Object Type:
Article
System:
The UNT Digital Library
On the standard L-function for GSp2n × GL1 and algebraicity of symmetric fourth L-values for GL2
This article proves an explicit integral representation—involving the pullback of a suitable Siegel Eisenstein series—for the twisted standard L-function associated to a holomorphic vector-valued Siegel cusp form of degree n and arbitrary level.
Date:
May 6, 2020
Creator:
Pitale, Ameya; Saha, Abhishek & Schmidt, Ralf
Object Type:
Article
System:
The UNT Digital Library
The Cluster Transfer Function of AtNEET Supports the Ferredoxin–Thioredoxin Network of Plant Cells
This article develops an inducible expression system to study AtNEET function in mature plants using a time-course proteomics approach. The authors report that the suppression of AtNEET cluster transfer function results in drastic changes in the expression of different members of the ferredoxin (Fd), Fd-thioredoxin (TRX) reductase (FTR), and TRX network of Arabidopsis, as well as in cytosolic cluster assembly proteins.
Date:
August 6, 2022
Creator:
Zandalinas, Sara I.; Song, Luhua; Nechushtai, Rachel; Mendoza-Cózatl, David & Mittler, Ron
Object Type:
Article
System:
The UNT Digital Library
Discovery of the first heavily obscured QSO candidate at z > 6 in a close galaxy pair
This article reports the Chandra discovery of the first heavily obscured QSO candidate in the early universe, hosted by a close (≈5 kpc) galaxy pair at z = 6.515.
Date:
May 17, 2022
Creator:
Vito, F.; Brandt, William Nielsen; Bauer, Franz E.; Gilli, Roberto; Luo, B.; Zamorani, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact
Article investigating ionization of atomic hydrogen by electron- and positron-impact. This article belongs to the Special Issue: Interactions of Positrons with Matter and Radiation.
Date:
May 29, 2020
Creator:
DeMars, C. M.; Ward, S. J.; Colgan, J.; Amami, S. & Madison, D. H.
Object Type:
Article
System:
The UNT Digital Library
Deep Minimum and a Vortex for Positronium Formation in Low-Energy Positron-Helium Collisions
This article finds a zero in the positronium formation scattering amplitude and a deep minimum in the logarithm of the corresponding differential cross section for positron–helium collisions for an energy just above the positronium formation threshold. Results show that there is a valley in the logarithm of the positronium formation differential cross section that includes the deep minimum and also a minimum in the forward direction.
Date:
August 6, 2021
Creator:
Alrowaily, Albandari W.; Quintanilla, Sandra J. & Van Reeth, Peter
Object Type:
Article
System:
The UNT Digital Library
Chandra and Magellan/FIRE follow-up observations of PSO167–13: An X-ray weak QSO at z = 6.515
This article presents the results of follow-up observations of the z = 6.515 radio-quiet QSO PSO167–13, which is interacting with a close companion galaxy with the goal to confirm the existence of the X-ray source and to investigate the rest-frame UV properties of the QSO. The authors observed the PSO167–13 system with Chandra/ACIS-S (177 ks) and obtained new spectroscopic observations (7.2 h) with Magellan/FIRE.
Date:
May 27, 2021
Creator:
Vito, F.; Brandt, William Nielsen; Ricci, F.; Congui, E.; Connor, T.; Bañados, E. et al.
Object Type:
Article
System:
The UNT Digital Library
An X-ray fading, UV brightening QSO at z ≈ 6
Article presents quasi-simultaneous X-ray and rest-frame UV observations of quasi-stellar object (QSO) z = 6.025 QSO J1641+3755.
Date:
July 26, 2022
Creator:
Vito, F.; Mignoli, M.; Gilli, R.; Brandt, William Nielsen; Shemmer, Ohad; Bauer, Franz E. et al.
Object Type:
Article
System:
The UNT Digital Library
Biocultural Calendars Across Four Ethnolinguistic Communities in Southwestern South America
Article describes how, since the mid-20th century, the so-called Great Acceleration has amplified processes of ecosystem degradation, extinction of biological species, displacement of local peoples, losses of languages, and cultural diversity. The authors examine cultural practices and socio-environmental changes across four contrasting ethnolinguistic communities in southwestern South America, from southern to northern Chile along a marked climatic gradient to show the broad application of the concept of biocultural calendars.
Date:
April 20, 2023
Creator:
Rozzi, Ricardo, 1960-; Álvarez, Ricardo; Castro, Victoria; Núñez, David; Ojeda, Jaime & Tauro, Alejandra
Object Type:
Article
System:
The UNT Digital Library
Biocultural homogenization in elementary education degree students from contrasting ecoregions of Chile
Article describes how biocultural homogenization is a wicked problem that implies the loss of biological and cultural diversity at different scales. The authors studied the perceptions that elementary education degree students (EEDS) have regarding the flora and fauna (co-inhabitants), their environments (habitats), and their daily customs or activities (habits) in these three ecoregions.
Date:
2023
Creator:
Méndez-Herranz, Manuela; Ibarra, J. Tomás; Rozzi, Ricardo, 1960- & Marini, Guillermo
Object Type:
Article
System:
The UNT Digital Library
Survival rates in the world's southernmost forest bird community
Article asserts that the Magellanic sub-Antarctic Forest is home to the world's southernmost avian community and is the only Southern Hemisphere analogue to Northern Hemisphere temperate forests at this latitude. Authors describe annual survival patterns and their association with climate variables using a 20-year mark–recapture data set of five forest bird species in the Cape Horn Biosphere Reserve.
Date:
June 20, 2023
Creator:
Sandvig, Erik M.; Quilodrán, Claudio S.; Altamirano, Tomás A.; Aguirre, Francisco; Barroso, Omar; Rivero de Aguilar, Juan et al.
Object Type:
Article
System:
The UNT Digital Library
Assembling Artificial Photosynthetic Models in Water Using β-Cyclodextrin-Conjugated Phthalocyanines as Building Blocks
Article describes how two water-soluble zinc(II) phthalocyanines substituted with two or four permethylated β-cyclodextrin (β-CD) moieties at the α positions have been utilized as building blocks for the construction of artificial photosynthetic models in water. The hydrophilic and bulky β-CD moieties not only can increase the water solubility of the phthalocyanine core and prevent its stacking in water but can also bind with a tetrasulfonated zinc(II) porphyrin (ZnTPPS) and/or sodium 2-anthraquinonesulfonate (AQ) in water through host–guest interactions.
Date:
March 29, 2023
Creator:
Chen, Xiao-Fei; Gobeze, Habtom B.; D'Souza, Francis & Ng, Dennis K. P.
Object Type:
Article
System:
The UNT Digital Library
Temporal complexity measure of reaction time series: Operational versus event time
Article describes how detrended fluctuation analysis (DFA) is a well-established method to evaluate scaling indices of time series, which categorize the dynamics of complex systems. The authors propose treating each reaction time as a duration time that changes the representation from operational (trial number) time n to event (temporal) time t, or X(t).
Date:
May 23, 2023
Creator:
Mahmoodi, Korosh; Kerick, Scott E.; Grigolini, Paolo; Franaszczuk, Pitor J. & West, Bruce J.
Object Type:
Article
System:
The UNT Digital Library
Effects of cultivar and nitrogen application rate on lint, seed, oil, and protein yields of field-grown cotton
Article describes how the objective of this study was to evaluate the lint, seed, oil, and protein yield responses of cultivars with different seed mass and composition to N application rates (0–168 kg N ha−1) for field-grown cotton. The authors conclude that variability in the distribution of photosynthates to fiber and seed as well as seed oil and protein composition can significantly alter trends in fiber, seed, and seed component yields in response to cultivar or N application rates for field-grown cotton.
Date:
March 9, 2023
Creator:
Parkash, Ved; Snider, John L.; Bruce, Aaron; Ermanis, Alessandro; Virk, Gurpreet; Kaur, Navneet et al.
Object Type:
Article
System:
The UNT Digital Library
Homologues and homology and their related terms in phylogenetic systematics
Article describes how, in the field of phylogenetic systematics, the terms homology and homologue and their relationship to cladistic terms such as character, character state, synapomorphy and symplesiomorphy, as well as their relationships to each other, have been and are still discussed frequently. A recent re-emergence of concepts of homology/homologue free of any reference to explanatory hypotheses prompted the authors to explore these concepts and their relationships to each other as well as to the concept of morpheme, as introduced recently.
Date:
February 4, 2023
Creator:
Göpel, Torben & Richter, Stefan
Object Type:
Article
System:
The UNT Digital Library