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Rediscovery of the Elements: The Rare Earths - The Beginnings
This article explores the rare earths, the chemically similar elements that occupy the f-block of the Periodic Table and the Group III chemical family. The articles shows the locations that certain rare earths were originally found. It also gives details on where the elements can be found currently, as well as major production areas. The cover of the Fall 2015 Hexagon journal (Vol. 106, Issue 3) features the Mountain Pass rare earth ore body in Southern California, which is mentioned in the article on pages 40-45 of the journal. A description of the photo on the cover of the journal can be found on page 38.
Computational inference of the structure and regulation of the lignin pathway in Panicum virgatum
This article uses a systems biological modeling approach to address the challenge of in vivo measurements to elucidate the structure and regulation of the lignin pathway through a computational characterization of alternate candidate topologies.
Lipidomic Analysis of Endocannabinoid Signaling: Targeted Metabolite Identification and Quantification
This article reviews several methodologies to quantify endocannabinoids in various biological systems.
Triply Differential Measurements for Positron Impact Ionization of Argon
This article reports triply differential cross sections for positron impact ionization of argon.
Tissue biodistribution of intravenously administrated titanium dioxide nanoparticles revealed blood-brain barrier clearance and brain inflammation in rat
This article reports time-related responses from single-dose intravenous administration of 1 mg/kg Ti₂ NPs to rats, with particular emphasis on titanium quantification in the brain.
Validation of a Non-Targeted LC-MS Approach for Identifying Ancient Proteins: Method Development on Bone to Improve Artifact Residue Analysis
This article discusses validation of the potential of an extraction and characterization approach via application to ancient bone proteins, as part of a larger method-development project for innovation and improvement of liquid chromatography - mass spectrometry analysis of protein residues from cooking pottery.
Abraham Model Correlations for Estimating Solute Transfer of Neutral Molecules into Anhydrous Acetic Acid from Water and from the Gas Phase
Article on Abraham model correlations for estimating solute transfer of neutral molecules into anhydrous acetic acid from water and from the gas phase.
Bottoms up: How subnational elections predict parties' decisions to run in presidential elections in Europe and Latin America
This article argues that a party's presence in elections across subnational units and its subsequent performance in these elections are determining factors for whether it enters the presidential race.
Discourse and dissonance: religious agendas in the 104th Congress
This article investigates the religious dimension of Republican legislators' participation in one-minute speeches during the 104th Congress (1995-1996).
Draft Genome Sequence of a Bacillus Bacterium from the Atacama Desert Wetlands Metagenome
This article reports the draft genome sequence of a Bacillus bacterium isolated from the microflora of Nostoc colonies grown at the Andean wetlands in northern Chile.
Multiple Comorbidities and Interest in Research Participation Among Clients of a Nonprofit Food Distribution Site
This article seeks to better understand the health needs of a nonclinical population to inform future research and interventions.
Role of a chalcone isomerase-like protein in flavonoid biosynthesis in Arabidopsis thaliana
This article identifies two chil mutants with a seed colour similar to that of wild-type Arabidopsis, but in sharp contrast to the characteristic transparent testa seed phenotype associated with other known flavonoid pathway genes.
Effect of halogen substitution on the enthalpies of solvation and hydrogen bonding of organic solutes in chlorobenzene and 1,2-dichlorobenzene derived using multi-parameter correlations
Article on the effect of halogen substitution on the enthalpies of solvation and hydrogen bonding of organic solutes in chlorobenzene and 1,2-dichlorobenzene derived using multi-parameter correlations.
Abraham Model Correlations for Solute Transfer into 2-Ethoxyethanol from Water and from the Gas Phase
Article on Abraham model correlations for solute transfer into 2-ethoxyethanol from water and from the gas phase.
Solubility of Tris(hydroxymethyl)aminomethane in Water + Methanol + 1-Propanol Mixtures at Various Temperatures
Article on the solubility of tris(hydroxymethyl)aminomethane in water + methanol + 1-propanol mixtures at various temperatures.
Localization of polyhydroxybutyrate in sugarcane using Fourier-transform infrared microspectroscopy and multivariate imaging
This article demonstrates the power of infrared microspectroscopy to rapidly image plan sections to provide a snapshot of the chemical composition of the cell.
20 Mule Team
This photograph from the front cover of an issue of the Hexagon Journal displays the mock 20 mule team that stands outside of the Rio Tinto Borax Museum in Boron, California. The mule team depicts the original mode used to transport the chemical compound, borax, out of Death Valley between 1883 and 1888. A description of the photograph is shown on page 23 of the journal.
Rediscovery of the Elements: Sir Humphry Davy and the Alkalis
Article provides information on the history of alkalis, particularly discoveries associated with potassium and sodium. The article also gives information on Humphry Davy, the first person to prepare alkalis in elemental form.
Buruli Ulcer Disease and Its Association with Land Cover in Southwestern Ghana
This article presents the first analysis of Buruli ulcer at the village level in southwestern Ghana, where prevalence rates are among the highest globally, and explores fine and medium-scale associations with land cover by comparing patterns both within Buruli ulcer clusters and surrounding landscapes.
Artificially Structured Boundary as a Charged Particle Beam Deflector Shield
This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings studies the possibility of using a planar artificially structured boundary as a charged particle beam deflector shield via classical trajectory Monte Carlo simulation.
Ion Beam Analysis of Microcrystalline Quartz Artifacts from the Reed Mound Site, Delaware County, Oklahoma
This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings evaluates the potential of particle induced X-ray emission spectrometry as a tool for future Ozarks chert provenance studies based on its ability to facilitate discrimination of Ozarks chert materials from different geological formations and identification of discrete groups of artifacts from the same geological formation.
Magnetic Control of a Charge-Neutralized Ion Beam
This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings presents a scheme for controlling charge-neutralized beams using a distortion of a magnetic guide field via the presence of two current carrying wires.
Particle Transport along Magnetic Null Lines as Sputter or Antihydrogen Source
This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings investigates particle transport along null magnetic lines using classical trajectory Monte Carlo simulations, described as a traveling wave and through diffusion equations.
Radial Expansion of a Low Energy Positron Beam Passing Through a Cold Electron Plasma within a Uniform Magnetic Field
This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings studies the radial expansion of a low energy positron beam passing through a cold electron plasma within a uniform magnetic field using a classical trajectory Monte Carlo simulation.
A Comprehensive Analysis of Groundwater Quality in the Barnett Shale Region
This article presents an analysis of 550 groundwater samples collected from private and public supply water wells drawing from aquifers overlying the Barnett shale formation of Texas.
From neural and social cooperation to the global emergence of cognition
This article elaborates on a discussion of the emergence of intelligence via criticality as a consequence of locality breakdown, by using criticality for the foundation of a novel generation of game theory making the local interaction between players yield long-range effects.
Commentary: Feedback stabilizes propagation of synchronous spiking in cortical neural networks
This article provides a commentary on the article "Feedback stabilizes propagation of synchronous spiking in cortical neural networks" by Moldakarimov, S., Bazhenov, M., and Sejnowski, T.J.
Methodology for Nanoscale Technology Based Mixed-Signal System Design
Patent relating to nanoscale technology based mixed-signal system design.
Multiple Aperture-Based Antihydrogen Parallel Plate Gravity Experiment
This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings describes an experiment that could be carried out at the CERN Antiproton Decelerator facility to determine the direction of acceleration of antihydrogen in the earth's gravitational field.
Abraham Model Correlations for Describing Solute Transfer into 2-Butoxyethanol from Both Water and the Gas Phase at 298 K
Article on Abraham model correlations for describing solute transfer into 2-butoxyethanol from both water and the gas phase at 298 K.
Weak Emission-Line Quasars in the Context of a Modified Baldwin Effect
This article tests whether the modified Baldwin effect remains strong across the wides possible of ranges of redshift and luminosity.
Pseudopotential-Based Correlation Consistent Composite Approach (rp-ccCA) for First- and Second-Row Transition Metal Thermochemistry
This article uses the relativistic-pseudopotential correlation consistent approach (rp-ccCA) to determine the enthalpy of formation of 24 first row (3d) transition metal compounds.
Predicting Hourly Ozone Pollution in Dallas-Fort Worth Area Using Spatio-Temporal Clustering
Presentation for the 2015 GeoComputation Annual Conference. This presentation discusses predicting hourly ozone pollution in the Dallas-Fort Worth area using spatio-temporal clustering.
The Grammaticalization of the Spanish Complement-taking Verb without a Complementizer
This article examines authentic data samples taken from the Corpus de Referencia del Español Actual (CREA) to uncover any semantic trends commonly observed in verbs taking a sentential complement without the complementizer que in Spanish.
Transgenic approaches to altering carbon and nitrogen partitioning in whole plants: assessing the potential to improve crop yields and nutritional quality
This article summarizes the key transport steps involved in organic carbon and nitrogen compound partitioning, and discusses various transgenic approaches for directly manipulating key carbon and nitrogen transporters involved.
Deduction of physiochemical properties from solubilities: 2,4-dihydroxybenzophenone, biotin, and caprolactam as examples
Article discussing the deduction of physiochemical properties from solubilities and 2,4-dihydroxybenzophenone, biotin, and caprolactam as examples.
Experimental and Computational Studies of the Kinetics of the Reaction of Atomic Hydrogen with Methanethiol
Article on experimental and computational studies of the kinetics of the reaction of atomic hydrogen with methanethiol.
Avoiding the Resource Curse: Challenges of the Policy Process in a Nascent-Oil-Producing Country in West Africa
Presentation for the 2015 University of North Texas (UNT) Student and Faculty Research Symposium on African Studies. This presentation discusses avoiding the resource curse and challenges of the policy process in a nascent-oil-producing country in West Africa.
Characteristics of Actors Involved in Social Protest: An Extension of the Social Conflict Analysis Database (SCAD)
Paper accompanying a presentation for the 2015 University of North Texas (UNT) Student and Faculty Research Symposium on African Studies. This paper discusses characteristics of actors involved in social protest and an extension of the social conflict analysis database.
Characteristics of Actors Involved in Social Protest: An Extension of the Social Conflict Analysis Database (SCAD) [Presentation]
Presentation for the 2015 University of North Texas (UNT) Student and Faculty Research Symposium on African Studies. This presentation discusses characteristics of actors involved in social protest and an extension of the social conflict analysis database (SCAD).
Rate Constant and Thermochemistry for K + O2 + N2 = KO2 + N2
This article discusses rate constant and thermochemistry for K + O2 + N2 = KO2 + N2.
The prognostic value of the stem-like group in colorectal cancer using a panel of immunohistochemistry markers
This article examines the immunohistochemical expression profile of 18 markers, each representing a putative role in cancer development, in 493 primary colorectal carcinomas using tissue microarrays.
Who Cares If Rhetoricians Landed on the Moon? Or, a Plea for Reviving the Politics of Historiography
This article discusses a plea for reviving the politics of historiography.
Determination of Abraham model solute descriptors for the monomeric and dimeric forms of trans-cinnamic acid using measured solubilities from the Open Notebook Science Challenge
Article on the determination of Abraham model solute descriptors for the monomeric and dimeric forms of trans-cinnamic acid using measured solubilities from the Open Notebook Science Challenge.
Predicting Abraham model solvent coefficients
Article on predicting Abraham model solvent coefficients.
Rediscovery of the Elements: Daniel Rutherford, Nitrogen, and the Demise of Phlogiston
Article describing Daniel Rutherford's discovery of nitrogen. The article also details the work of other scientists revolving around the discovery of nitrogen.
High-Temperature Kinetics of the Reaction between Chlorine Atoms and Hydrogen Sulfide
Article on high-temperature kinetics of the reaction between chlorine atoms and hydrogen sulfide.
Geospatial and Contextual Approaches to Energy Balance and Health
This article examines associations between geographic and contextual features of the environment and elements of human energy balance, with a particular focus on research and opportunities in the United States.
Evaluation of Three Major Emission Sources on DFW Ozone Level Using Photochemical Modeling
Poster for the 2015 University of North Texas (UNT) Graduate Exhibition. This poster discusses the evaluation of three major emission sources on the Dallas-Fort Worth ozone levels using photochemical modeling.
A decision-making phase-space model for fairness assessment
Article on a decision-making phase-space model for fairness assessment.