Recurrent urinary tract infection and estrogen shape the taxonomic ecology and function of the postmenopausal urogenital microbiome (open access)

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.
System: The UNT Digital Library
The refractive index of a single atom experienced by a single photon (open access)

The refractive index of a single atom experienced by a single photon

Article describes how the refractive index of a system is often viewed as the collective response of a medium to an electromagnetic field. By studying the propagation of a single photon interacting with a two-level atom, the authors examine the dispersion behavior, calculate the phase and group velocity of the photon wave packet, and further analyze the dispersion experienced by the photon.
Date: October 25, 2023
Creator: Rostovtsev, Yuri V.; Emerick, Jacob & Patnaik, Anil K.
System: The UNT Digital Library
Reverberation Mapping of High-Luminosity Quasars (open access)

Reverberation Mapping of High-Luminosity Quasars

This article presents the CIV BLR size and luminosity relation over eight orders of magnitude in luminosity, pushing the luminosity limit to its highest point so far.
Date: October 30, 2017
Creator: Kaspi, Shai; Brandt, William Nielsen; Maoz, Dan; Netzer, Hagai; Schneider, Donald P. & Shemmer, Ohad
System: The UNT Digital Library
Revision and Extension of a Generally Applicable Group-Additivity Method for the Calculation of the Standard Heat of Combustion and Formation of Organic Molecules (open access)

Revision and Extension of a Generally Applicable Group-Additivity Method for the Calculation of the Standard Heat of Combustion and Formation of Organic Molecules

Article presenting the calculation of the heats of combustion ΔH°c and formation ΔH°f of organic molecules at standard conditions using a commonly applicable computer algorithm based on the group-additivity method. This work is a continuation and extension of an earlier publication.
Date: October 10, 2021
Creator: Naef, Rudolf & Acree, William E. (William Eugene)
System: The UNT Digital Library
Short-chain fatty acid receptors inhibit invasive phenotypes in breast cancer cells (open access)

Short-chain fatty acid receptors inhibit invasive phenotypes in breast cancer cells

This article evaluates the effects of enforced overexpression of two known G protein-coupled receptors in two phenotypically distinct breast cancer cell lines.
Date: June 1, 2017
Creator: Thirunavukkarasan, Madhumathi; Wang, Chao; Rao, Angad; Hind, Tatsuma; Teo, Yuan Ru; Siddiquee, Abrar Al-Mahmood et al.
System: The UNT Digital Library
Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam (open access)

Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam

Article presents the simulations of an electrostatic quadrupole quadruplet (EQQ) lens system that will be used in a new sub-micron multi-ion beam for radiobiological studies.
Date: October 2, 2019
Creator: Glass, Gary A.; Chirayath, V. A.; Arya, H.; Jin, M.; Weiss, A. H. & Chi, Y.
System: The UNT Digital Library
Simultaneous electrophysiological and morphological assessment of functional damage to neural networks in vitro after 30–300 g impacts (open access)

Simultaneous electrophysiological and morphological assessment of functional damage to neural networks in vitro after 30–300 g impacts

Article describes studying aiming to investigate and quantify network activity changes after simulated concussions in vitro and therewith develop a platform for simultaneous and direct observations of morphological and electrophysiological changes in neural networks.
Date: October 18, 2019
Creator: Rogers, Edmond A. & Gross, Guenter W.
System: The UNT Digital Library
Sub-Diffraction-Limit Imaging System with two Interfacing Hyperbolic Metamaterials (open access)

Sub-Diffraction-Limit Imaging System with two Interfacing Hyperbolic Metamaterials

Article demonstrating that a system of two interfacing hyperbolic metamaterials may be used for direct subwavelength imaging in the visible range.
Date: October 27, 2021
Creator: Bronnikov, Kirill; Arriaga, J.; Krokhin, Arkadii A. & Drachev, Vladimir P.
System: The UNT Digital Library
Substrate Specificity of LACCASE8 Facilitates Polymerization of Caffeyl Alcohol for C-Lignin Biosynthesis in the Seed Coat of Cleome hassleriana (open access)

Substrate Specificity of LACCASE8 Facilitates Polymerization of Caffeyl Alcohol for C-Lignin Biosynthesis in the Seed Coat of Cleome hassleriana

This article finds that the transcript profile of the laccase gene ChLAC8 parallels the accumulation of C-lignin during seed coat development. Recombinant ChLAC8 oxidizes caffeyl and sinapyl alcohols, generating their corresponding dimers or trimers in vitro, but cannot oxidize coniferyl alcohol. The authors propose a basis for this substrate preference based on molecular modeling/docking experiments. Suppression of ChLAC8 expression led to significantly reduced C-lignin content in the seed coats of transgenic Cleome plants. Feeding of 13C-caffeyl alcohol to the Arabidopsis (Arabidopsis thaliana) caffeic acid o-methyltransferase mutant resulted in no incorporation of 13C into C-lignin, but expressing ChLAC8 in this genetic background led to appearance of C-lignin with >40% label incorporation. These results indicate that ChLAC8 is required for C-lignin polymerization and determines lignin composition when caffeyl alcohol is available.
Date: October 9, 2020
Creator: Wang, Xin; Zhuo, Chunliu; Xiao, Xirong; Wang, Xiaoqiang; Docampo-Palacios, Maite; Chen, Fang et al.
System: The UNT Digital Library
Sustainable nutrition: a spatially explicit modeling approach for urban land use planning (open access)

Sustainable nutrition: a spatially explicit modeling approach for urban land use planning

Article describes how rapid urbanization has influenced the transformation of local and global food systems, altering the availability, access to, and distribution of healthy food. Micronutrient deficiency and hunger have been exacerbated worldwide. The author's research proposes a simulation strategy to evaluate the impact of agricultural land use and crop choices on nutritional production in rapidly growing urban areas.
Date: October 14, 2022
Creator: Torres, Angélica Torres; Tiwari, Chetan & Atkinson, Samuel F.
System: The UNT Digital Library
Time-resolved systems analysis of the induction of high photosynthetic capacity in Arabidopsis during acclimation to high light (open access)

Time-resolved systems analysis of the induction of high photosynthetic capacity in Arabidopsis during acclimation to high light

Article describes how induction of high photosynthetic capacity is a key acclimation response to high light for many herbaceous dicot plants. Here, a systems biology approach was utilized to characterize the induction of high photosynthetic capacity in strongly and weakly acclimating Arabidopsis thaliana accessions.
Date: October 17, 2023
Creator: Baker, Christopher R.; Cocuron, Jean-Christophe; Alonso, Ana Paula & Niyogi, Krishna K.
System: The UNT Digital Library

Triplet electron transfer and spin polarization in a palladium porphyrin–fullerene conjugate

Access: Use of this item is restricted to the UNT Community
This article uses Transient electron paramagnetic resonance (TREPR) spectroscopy to investigate the pathway and dynamics of electron transfer in a palladium porphyrin–fullerene donor–acceptor conjugate.
Date: October 29, 2018
Creator: Poddutoori, Prashanth K.; Kandrashkin, Yuri E.; Obondi, Christopher O.; D'Souza, Francis & van der Est, Art
System: The UNT Digital Library
Trypsin induces an aversive response in zebrafish by PAR2 activation in keratinocytes (open access)

Trypsin induces an aversive response in zebrafish by PAR2 activation in keratinocytes

Article using zebrafish as a model and identifies that trypsin induces an aversive response in zebrafish larvae and adult zebrafish. Results show that the trypsin activates PAR2 on keratinocytes signaling the brain, and this pathway of trypsin-induced escape response will provide a unique communication mechanism in zebrafish.
Date: October 8, 2021
Creator: Alsrhani, Abdullah; Raman, Revathi & Jagadeeswaran, Pudur
System: The UNT Digital Library
Tuning the decay of sound in a viscous metamaterial (open access)

Tuning the decay of sound in a viscous metamaterial

Authors of the article use analytical results for viscous dissipation in phononic crystals to calculate the decay coefficient of a sound wave propagating at low frequencies through a two-dimensional phononic crystal with a viscous fluid background. They claim that the decay coefficient exhibits dependence on the direction of propagation; that is, a homogenized phononic crystal behaves like an anisotropic viscous fluid.
Date: October 10, 2022
Creator: Ibarias, M.; Doporto, J.; Krokhin, Arkadii A. & Arriaga, J.
System: The UNT Digital Library
Unusual Mathematical Approaches Untangle Nervous Dynamics (open access)

Unusual Mathematical Approaches Untangle Nervous Dynamics

Article reports that the massive amount of available neurodata suggests the existence of a mathematical backbone underlying neuronal oscillatory activities. The authors assert that the Monge’s theorem might contribute to our visual ability of depth perception and the brain connectome can be tackled in terms of tunnelling nanotubes.
Date: October 14, 2022
Creator: Tozzi, Arturo & Mariniello, Lucio
System: The UNT Digital Library
The Water-Water Cycle Is Essential for Chloroplast Protection in the Absence of Stress (open access)

The Water-Water Cycle Is Essential for Chloroplast Protection in the Absence of Stress

Article showing that knockdown Arabidopsis plants with suppressed expression of the key water-water cycle enzyme, thylakoid-attached copper/zinc superoxide dismutase (KD-SOD), are suppressed in their growth and development. This article provides e genetic evidence for the importance of the water-water cycle in protecting the photosynthetic apparatus of higher plants from photooxidative damage.
Date: October 3, 2003
Creator: Rizhsky, Ludmila; Liang, Hongjian & Mittler, Ron
System: The UNT Digital Library