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A Dark Adaptation Study of College Men and Women (open access)

A Dark Adaptation Study of College Men and Women

This study is the result of tests conducted to determine the adaptability of the human eye to darkness.
Date: August 1940
Creator: Henry, Archie
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Mineral Analysis of the Water of Lake Wichita (open access)

A Mineral Analysis of the Water of Lake Wichita

This thesis resulted from analysis of the water in Lake Wichita so that sources of water content could be determined.
Date: August 1940
Creator: Lisle, F. M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Chemical Investigation of Lake Dallas to Determine the Factors Influencing Plankton Growth. (open access)

A Chemical Investigation of Lake Dallas to Determine the Factors Influencing Plankton Growth.

A study to determine the organic content of Lake Dallas, and study the influence on plankton growth.
Date: August 1939
Creator: Welch, Herschel
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Novel Metal Hydroxide Derivatives Containing Chemically Bound Organophosphorus or Polyphosphate Species as Flame Retardants (open access)

Novel Metal Hydroxide Derivatives Containing Chemically Bound Organophosphorus or Polyphosphate Species as Flame Retardants

Patent relating to novel metal hydroxide derivatives containing chemically bound organophosphorus or polyphosphate species as flame retardants.
Date: March 29, 2006
Creator: Braterman, Paul S.; D'Souza, Nandika & Dharia, Amit
Object Type: Patent
System: The UNT Digital Library
C H Bond Activation of Methane by Ptᴵᴵ N-Heterocyclic Carbene Complexes: The Importance of Having the Ligands in the Right Place at the Right Time (open access)

C H Bond Activation of Methane by Ptᴵᴵ N-Heterocyclic Carbene Complexes: The Importance of Having the Ligands in the Right Place at the Right Time

Article discussing C H bond activation of methane by Ptᴵᴵ N-Heterocyclic carbene complexes.
Date: January 25, 2012
Creator: Prince, Bruce M. & Cundari, Thomas R., 1964-
Object Type: Article
System: The UNT Digital Library
Mechanistic Study of Oxy Insertion into Nickel Carbon Bonds with Nitrous Oxide (open access)

Mechanistic Study of Oxy Insertion into Nickel Carbon Bonds with Nitrous Oxide

Article discussing a mechanistic study of oxy insertion into nickel carbon bonds with nitrous oxide.
Date: July 5, 2012
Creator: Figg, Travis M. & Cundari, Thomas R., 1964-
Object Type: Article
System: The UNT Digital Library
Facile and Regioselective C H Bond Activation of Aromatic Substrates by an Fe (II) Complex Involving a Spin-Forbidden Pathway (open access)

Facile and Regioselective C H Bond Activation of Aromatic Substrates by an Fe (II) Complex Involving a Spin-Forbidden Pathway

Article discussing facile and regioselective C H bond activation of aromatic substrates by an Fe(II) complex involving a spin-forbidden pathway.
Date: February 27, 2013
Creator: Kalman, Steven E.; Petit, Alban; Gunnoe, T. Brent; Ess, Daniel H.; Cundari, Thomas R., 1964- & Sabat, Michal
Object Type: Article
System: The UNT Digital Library
Use of [SbF₆]⁻ to Isolate Cationic Copper and Silver Adducts with More than One Ethylene on the Metal Center (open access)

Use of [SbF₆]⁻ to Isolate Cationic Copper and Silver Adducts with More than One Ethylene on the Metal Center

Article discussing the use of [SbF₆]⁻ to isolate cationic copper and silver adducts with more than one ethylene on the metal center.
Date: May 15, 2013
Creator: Fianchini, Mauro; Campana, Charles; Chilukuri, Bhaskar; Cundari, Thomas R., 1964-; Petricek, Vaclav & Dias, H. V. Rasika
Object Type: Article
System: The UNT Digital Library
Platinum(II)-Catalyzed Ethylene Hydrophenylation: Switching Selectivity between Alkyl- and Vinylbenzene Production (open access)

Platinum(II)-Catalyzed Ethylene Hydrophenylation: Switching Selectivity between Alkyl- and Vinylbenzene Production

Article discussing platinum(II)-catalyzed ethylene hydrophenylation and the influence of dipyridyl chelate ring size on catalyst activity and longevity.
Date: April 23, 2013
Creator: McKeown, Bradley A.; Gonzalez, Hector Emanuel; Friedfeld, Max R.; Brosnahan, Anna M.; Gunnoe, T. Brent; Cundari, Thomas R., 1964- et al.
Object Type: Article
System: The UNT Digital Library
Comments Regarding "Study of Molecular Interactions in Binary Mixtures of Formamide with 2-Methoxyethanol and 2-Ethoxyethanol at Varying Temperatures" (open access)

Comments Regarding "Study of Molecular Interactions in Binary Mixtures of Formamide with 2-Methoxyethanol and 2-Ethoxyethanol at Varying Temperatures"

This article provides comments on "Study of Molecular Interactions in Binary Mixtures of Formamide with 2-Methoxyethanol and 2-Ethoxyethanol at Varying Temperatures," published in 'Physics and Chemistry of Liquids,' 2013.
Date: June 3, 2013
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Supporting Material for: Enthalpy of Solvation Correlations for Gaseous Solutes Dissolved in Water and in 1-Octanol Based on the Abraham Model (open access)

Supporting Material for: Enthalpy of Solvation Correlations for Gaseous Solutes Dissolved in Water and in 1-Octanol Based on the Abraham Model

This document includes supporting material for an article titled, "Enthalpy of solvation correlations for gaseous solutes dissolved in water and in 1-octanol based on the Abraham model," published in the Journal of Chemical Information and Modeling.
Date: December 15, 2007
Creator: Mintz, Christina; Clark, Michael; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Object Type: Text
System: The UNT Digital Library
Thermodynamics of mobile order theory (open access)

Thermodynamics of mobile order theory

Article on the thermodynamics of mobile order theory.
Date: 1997
Creator: Acree, William E. (William Eugene); Powell, Joyce R.; McHale, Mary E. R.; Pandey, Siddharth; Borders, Tammie L. & Campbell, Scott W.
Object Type: Article
System: The UNT Digital Library
A Novel Methodology to Mimic Biological Properties using Ionic Liquids: An Extensive in silico Study (open access)

A Novel Methodology to Mimic Biological Properties using Ionic Liquids: An Extensive in silico Study

Paper discussing an extensive in silico study and a novel methodology to mimic biological properties using ionic liquids.
Date: October 2014
Creator: Mehta, Sumedha; Kuprasertkul, Nina & Wadawadigi, Akash
Object Type: Paper
System: The UNT Digital Library
Using Paired Depth Interviews to Collect Qualitative Data (open access)

Using Paired Depth Interviews to Collect Qualitative Data

This article defines and describes paired depth interviews, discusses conceptualizations of paired depth interviews using Roulston's framework, delineates the strengths and limitations of paired depth interviews, and provides examples of paired depth interviews utilized in helping professions.
Date: September 5, 2016
Creator: Wilson, Angela K.; Onwuegbuzie, Anthony J. & Manning, LaShondra P.
Object Type: Article
System: The UNT Digital Library
An efficient and accurate framework for calculating lattice thermal conductivity of solids: AFLOW—AAPL Automatic Anharmonic Phonon Library (open access)

An efficient and accurate framework for calculating lattice thermal conductivity of solids: AFLOW—AAPL Automatic Anharmonic Phonon Library

This article presents the Automatic Anharmonic Phonon Library.
Date: November 17, 2016
Creator: Plata, Jose J.; Nath, Pinku; Usanmaz, Demet; Carrete, Jesús; Toher, Cormac; de Jong, Maarten et al.
Object Type: Article
System: The UNT Digital Library
The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation (open access)

The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation

Our country continues to demand clean renewable energy to meet the growing energy needs of our time. Thus, natural gas, which is 87% by volume of methane, has become a hot topic of discussion because it is a clean burning fuel. However, the transportation of methane is not easy because it is a gas at standard temperature and pressure. The usage of transition metals for the conversion of small organic species like methane into a liquid has been a longstanding practice in stoichiometric chemistry. Nonetheless, the current two-step process takes place at a high temperature and pressure for the conversion of methane and steam to methanol via CO + H2 (syngas). The direct oxidation of methane (CH4) into methanol (CH3OH) via homogeneous catalysis is of interest if the system can operate at standard pressure and a temperature less than 250 C. Methane is an inert gas due to the high C-H bond dissociation energy (BDE) of 105 kcal/mol. This dissertation discusses a series of computational investigations of oxy-insertion pathways to understand the essential chemistry behind the functionalization of methane via the use of homogeneous transition metal catalysis. The methane to methanol (MTM) catalytic cycle is made up of two key …
Date: May 2014
Creator: Prince, Bruce M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Targeted and Metal-loaded Polymeric Nanoparticles As Potential Cancer Therapeutics (open access)

Targeted and Metal-loaded Polymeric Nanoparticles As Potential Cancer Therapeutics

Polymeric nanoparticles were designed, synthesized, and loaded with metal ions to explore the therapeutic potential for transition metals other than platinum found in cisplatin. Nanoparticles were synthesized to show the potential for polymer based vectors. Metal loading and release were characterized via Inductively Coupled Plasma Mass Spectrometry (ICP MS), Energy Dispersive X-Ray Spectroscopy (EDX), X-Ray Photoelectron Spectroscopy (XPS), and Elemental Analysis. Targeting was attempted with the expectation of observed increased particle uptake by cancer cells with flow cytometry and fluorescence microscopy. Results demonstrated that a variety of metals could be loaded to the nano-sized carriers in an aqueous environment, and that the release was pH-dependent. Expected increased targeting was inconsistent. The toxicity of these particles was measured in cancer cells where significant toxicity was observed in vitro via dosing of high copper-loaded nanoparticles and slight toxicity was observed in ruthenium-loaded nanoparticles. No significant toxicity was observed in cells dosed with metal-free nanoparticles. Future research will focus on ruthenium loaded polymeric nanoparticles with different targeting ligands dosed to different cell lines for the aim of increased uptake and decreased cancer cell viability.
Date: May 2014
Creator: Harris, Alesha N.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The relaxation of OH (v = 1) and OD (v = 1) by H2O and D2O at temperatures from 251 to 390 K (open access)

The relaxation of OH (v = 1) and OD (v = 1) by H2O and D2O at temperatures from 251 to 390 K

Article on the relaxation of OH (v = 1) and OD (v = 1) by H₂O and D₂O at temperatures from 251 to 390 K.
Date: June 30, 2006
Creator: McCabe, D. C.; Rajakumar, B.; Marshall, Paul; Smith, Ian W. M. & Ravishankara, A. R.
Object Type: Article
System: The UNT Digital Library
Reaction of hydroxyl radicals with trichloroethylene: Evidence for chlorine elimination channels at elevated temperatures (open access)

Reaction of hydroxyl radicals with trichloroethylene: Evidence for chlorine elimination channels at elevated temperatures

Article on the reaction of hydroxyl radicals with trichloroethylene and evidence for chlorine elimination channels at elevated temperatures.
Date: 2000
Creator: Tichenor, LeAnn B.; Lozada-Ruiz, Alexei I.; Yamada, Takahim; El-Sinawi, Abdulaziz; Taylor, Philip H.; Peng, Jingping et al.
Object Type: Article
System: The UNT Digital Library
Saguaro Cactus and Joshua Trees (open access)

Saguaro Cactus and Joshua Trees

Front cover of the spring 2013 issue of The Hexagon, which features an image of a saguaro cactus and joshua trees at a location in northwest Arizona along highway US 93. The inside cover contains a table of contents, a staff list, an editorial, and details about the cover photograph.
Date: Spring 2013
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Object Type: Article
System: The UNT Digital Library
Rediscovery of the Elements: Rhenium and Technetium (open access)

Rediscovery of the Elements: Rhenium and Technetium

Article describing the discovery of rhenium and technetium by Walter Karl Friedrich Noddack and Ida Eva Noddack-Tacke. Information regarding pertinent locations is included.
Date: Winter 2013
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Object Type: Article
System: The UNT Digital Library
Rediscovery of the Elements: Cronstedt and Nickel (open access)

Rediscovery of the Elements: Cronstedt and Nickel

Article describing Axel Fredrik Cronstedt and his discovery of nickel. Information regarding pertinent locations is included.
Date: Summer 2014
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Object Type: Article
System: The UNT Digital Library
Rediscovery of the Elements: Joseph Black. Magnesia and Fixed Air (open access)

Rediscovery of the Elements: Joseph Black. Magnesia and Fixed Air

Article describing Joseph Black and his discovery of magnesia and fixed air. The authors toured Edinburgh, Scotland in search of locations important to Black, providing the reader with maps and historical information regarding the sites.
Date: Autumn 2014
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Object Type: Article
System: The UNT Digital Library
Crystal structure of bis(acetonitrile-𝖪N)(4,4'-di-tert-butyl-2,2'-bipyridine-𝖪²N,N')platinum(II) bis(tetra-fluoridoborate) packing as head-to-head dimers (open access)

Crystal structure of bis(acetonitrile-𝖪N)(4,4'-di-tert-butyl-2,2'-bipyridine-𝖪²N,N')platinum(II) bis(tetra-fluoridoborate) packing as head-to-head dimers

This article describes the crystal structure of a platinum(II) supramolecular building block, [Pt-(dbbpy)NNCCH₃)₂](BF₄)₂ (dbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine, C₁₈H₂₄N₂).
Date: April 16, 2018
Creator: Joseph, Chris; Nesterov, Vladimir N. & Smucker, Bradley W.
Object Type: Article
System: The UNT Digital Library