Search Results

open access

Abscisic acid regulates secondary cell-wall formation and lignin deposition in Arabidopsis thaliana through phosphorylation of NST1

Description: Article using a combination of biochemical and genetic approaches to show how ABA can regulate lignin biosynthesis. This work provides a basis for designing trees and other biomass plants that are better adapted to stress and climate change. This article includes a correction on the first page.
Date: February 2, 2021
Creator: Liu, Chang; Yu, Hasi; Rao, Xiaolan; Li, Laigeng & Dixon, R. A.
open access

Acid-base regulation in the air-breathing swamp eel (Monopterus albus) at different temperatures

Description: Article describes study in which researchers characterized the influence of temperature on arterial acid–base balance and intracellular pH (pHi) in the bimodal-breathing swamp eel, Monopterus albus.
Date: February 27, 2018
Creator: Thinh, Phan Vinh; Phuong, Nguyen Thanh; Brauner, Colin J.; Huong, Do Thi Thanh; Wood, Andrew T.; Kwan, Garfield T. et al.
open access

Air pollution and endocrine disruptors induce human microbiome imbalances: A systematic review of recent evidence and possible biological mechanisms

Description: Article presents a systematic review examining the scientific evidence on the effect of environmental toxicants, air pollutants and endocrine disruptors (EDCs), on compositional and diversity of human microbiota.
Date: February 11, 2022
Creator: Mousavi, Sayed Esmaeil; Delgado-Saborit, Juana Maria; Adivi, Anna; Pauwels, Sara & Godderis, Lode
open access

Analyzing the Bolometric Performance of Vanadium Oxide Thin Films Modified by Carbon Nanotube Dispersions

Description: Article investigates the influence of carbon nanotube (CNT) dispersions on the electrical properties and noise signal amplitude of 𝑉𝑂𝑥 films. The results presented in this work provide a better understanding of 𝑉𝑂𝑥-based composites, thereby enabling the development of new, versatile and functional materials for device applications.
Date: February 12, 2023
Creator: Philipose, Usha; Littler, Chris; Jiang, Yan; Naciri, Alia; Harcrow, Michael & Syllaios, A. J.
open access

Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin

Description: This article presents a new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, that is shown to undergo excited state charge separation, which is enhanced by axial F⁻ binding to the Zn center. Spectroelectrochemical studies are used to identify the spectra of charge separated states and charge separation upon photoexcitation of ZnP is established.
Date: February 24, 2021
Creator: Chahal, Mandeep K.; Liyanage, Anudradha; Alsaleh, Ajyal Z.; Karr, P. A.; Hill, Jonathan P. & D'Souza, Francis
open access

Asymmetric hydrogenation of an α-unsaturated carboxylic acid catalyzed by intact chiral transition metal carbonyl clusters – diastereomeric control of enantioselectivity

Description: Article presenting research where twenty clusters of the general formula [(μ-H)₂Ru₃(μ₃-S)(CO)₇(μ-P–P*)] (P–P* = chiral diphosphine of the ferrocene-based Walphos or Josiphos families) have been synthesised and characterised.
Date: February 27, 2020
Creator: Richmond, Michael G.; Abdel-Magied, Ahmed F.; Theibich, Yusuf; Singh, Amrendra K.; Rahaman, Ahibur; Doverbratt, Isa et al.
open access

Automated Approach to In Vitro Image-Guided Photothermal Therapy with Top-Down and Bottom-Up-Synthesized Graphene Quantum Dots

Description: Article discusses how, based on recent studies, graphene quantum dots (GQDs) are expected to possess advantageous photothermal properties and facilitate fluorescence image-tracking in the visible and near-infrared (NIR), while surpassing other graphene-based materials in their biocompatibility. The combination of the photothermal and imaging modalities tested in vitro makes the GQDs developed in this work prospective agents for cancer theragnostics.
Date: February 22, 2023
Creator: Lee, Bong; Stokes, Gretel A.; Valimukhametova, Alina; Nguyen, Steven; Gonzalez-Rodriguez, Roberto; Bhaloo, Adam et al.
open access

Calculation of the Vapour Pressure of Organic Molecules by Means of a Group-Additivity Method and Their Resultant Gibbs Free Energy and Entropy of Vaporization at 298.15 K

Description: Article presenting the calculation of the vapour pressure of organic molecules at 298.15 K using a commonly applicable computer algorithm based on the group-additivity method. The standard entropy of vaporization ΔS°vap has been determined and compared with experimental data of 1129 molecules, exhibiting excellent conformance with a correlation coefficient R2 of 0.9598, a standard error σ of 8.14 J/mol/K and a medium absolute deviation of 4.68%.
Date: February 17, 2021
Creator: Naef, Rudolf & Acree, William E. (William Eugene)
open access

Caputo Fractional Derivative and Quantum-Like Coherence

Description: This article studies two forms of anomalous diffusions and discusses the joint use of these prescriptions, with a phenomenological method and a theoretical projection method, leading to two apparently different diffusion equations. The authors prove that the two diffusion equations are equivalent and design a time series that corresponds to the anomalous diffusion equation proposed.
Date: February 9, 2021
Creator: Culbreth, Garland; Bologna, Mauro; West, Bruce J. & Grigolini, Paolo
open access

Cardiac and metabolic physiology of early larval zebrafish (Danio rerio) reflects parental swimming stamina

Description: This article explores swimming stamina in fish. Mature adult zebrafish (Danio rerio) were subjected to a swimming performance test and then bred within performance groups to discover if enhanced swimming stamina in offspring appears only in juveniles/adults, or if these traits appear as early as larvae.
Date: February 24, 2012
Creator: Burggren, Warren W. & Gore, Matthew
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”

Description: 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)
open access

Comments on “Thermodynamic modeling studies of aqueous solubility of caffeine, gallic acid and their cocrystal in the temperature range of 303 Ke363 K”

Description: This article comments on activity coefficients based on a thermodynamic relationship that failed to properly take into account the solid phase transition that both caffeine and gallic acid exhibited prior to melting.
Date: February 8, 2018
Creator: Acree, William E. (William Eugene)
open access

Dementia and COVID-19 among Older African American Adults: A Scoping Review of Healthcare Access and Resources

Description: Article discusses how African American/Black communities comprise 12.2% of the U.S. population, with a COVID-19 infection rate of more than 18% and marginal access to healthcare services. This scoping review synthesizes the emerging evidence on healthcare accessibility among older African American adult communities with dementia and COVID-19, as well as the resource requirements for this population during the pandemic.
Date: February 16, 2023
Creator: Udoh, Idorenyin Imoh; Mpofu, Elias & Prybutok, Gayle
open access

Development of a Thulium Fiber Laser for an Atomic Spectroscopy Experiment

Description: This article is a simplified analysis of a convenient thulium fiber laser source with 3 W of output power operating at a wavelength of 2059 nm with a slope efficiency of 49% with respect to input pump power and 60% with respect to absorbed pump power. The laser was applied in an atomic helium spectroscopy experiment to quench ³He (2058.63 nm) and ⁴He (2058.69 nm) meta-stable singlets (2¹S0), allowing for further investigation of the helium fine structure.
Date: February 15, 2020
Creator: Currey, Ronnie; Khademian, Ali & Shiner, David
open access

Disentangling Orbital and Valley Hall Effects in Bilayers of Transition Metal Dichalcogenides

Description: This article shows that a bilayer of 2H-MoS₂ is an orbital Hall insulator that exhibits a sizeable orbital Hall effect in the absence of both spin and valley Hall effects. The results are based on density functional theory and low-energy effective model calculations and strongly suggest that bilayers of TMDs are highly suitable platforms for direct observation of the orbital Hall insulating phase in two-dimensional materials.
Date: February 5, 2021
Creator: Cysne, Tarik P.; Costa, Marcio; Canonico, Luis M.; Buongiorno Nardelli, Marco; Muniz, R. B. & Rappoport, Tatiana G.
open access

Dissecting the transcriptional regulation of proanthocyanidin and anthocyanin biosynthesis in soybean (Glycine max)

Description: This article analyzes the transcriptional control of PA and anthocyanin biosynthesis in soybean. Results show that engineered PA biosynthesis in soybean exhibits qualitative and spatial differences from the better-studied model systems Arabidopsis thaliana and Medicago truncatula, and suggest targets for engineering PAs in soybean plants.
Date: February 4, 2021
Creator: Lu, Nan; Rao, Xiaolan; Jun, Ji Hyung & Dixon, R. A.
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