Chemistry Commons^™

Emissions Of Organic Compounds From Produced Water Ponds I: Characteristics And Speciation, Seth N. Lyman, Marc L. Mansfield, Huy N.Q. Tran, Jordan D. Evans, Colleen Jones, Trevor O'Neil, Ric Bowers, Ann Smith, Cara Keslar

Chemistry and Biochemistry Faculty Presentations

We measured fluxes of methane, a suite of non-methane hydrocarbons (C2–C11), light alcohols, and carbon dioxide from oil and gas produced water storage and disposal ponds in Utah (Uinta Basin) and Wyoming (Upper Green River Basin) United States during 2013–2016. In this paper, we discuss the characteristics of produced water composition and air-water fluxes, with a focus on flux chamber measurements. In companion papers, we will (1) report on inverse modeling methods used to estimate emissions from produced water ponds, including comparisons with flux chamber measurements, and (2) discuss the development of mass transfer coefficients to estimate emissions ...

Organic Chemistry I & Ii (Ccga), Colleen Knight, Leon Gardner, Joseph Lodmell, Ernest Pascoe, Andrea Wallace, Lisa Mcneal

Chemistry Grants Collections

This Grants Collection for Organic Chemistry I & II was created under a Round Seven ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Principles Of Chemistry I & Ii (Ccga), Colleen Knight, Leon Gardner, Joseph Lodmell, Ernest Pascoe, Andrea Wallace, Lisa Mcneal

Chemistry Grants Collections

This Grants Collection for Principles of Chemistry I & II was created under a Round Seven ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Principles Of Chemistry I & Ii (Ga Southern), Lea Padgett, Catherine Macgowan, Gary Guillet, Todd Hizer

Chemistry Grants Collections

This Grants Collection for Principles of Chemistry I & II was created under a Round Seven ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Principles Of Chemistry I & Ii (Ghc), Sarah Tesar, Allen Easton, Erin Kingston, Joseph Collins, Charles Garrison, Greg Ford, Christin Collins

Chemistry Grants Collections

This Grants Collection for Principles of Chemistry I & II was created under a Round Eight ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Synthesis Of Dimeric Zinc Complexes For Use As Ring Opening Polymerization Catalysts, Kyle D. Brooks, Arnlold Rheingold, David B. Green, Joe Fritsch

Seaver College Research And Scholarly Achievement Symposium

In this project, new zinc complexes were synthesized to be used in the polymerization of ε-caprolactone (ε-CL) and L-lactide (LA). The complexes that were prepared contained electron-donating and electron-withdrawing substituents. The complexes were analyzed with ¹H NMR and broad peaks were observed which suggested a dynamic equilibrium for the complex. Variable temperature ¹H NMR spectra were collected and demonstrated that as the temperature decreased, the resonances became sharp and well resolved indicating decreasing fluxional character of the complexes. Single crystal x-ray crystallography elucidated the dimeric solid-state structures of the complexes through bridging ligands between zinc centers. A preliminary ...

Computational Investigation Of The Ring-Opening Homo- And Co-Polymerizations Of Lactide And Ε-Caprolactone, Diego Garcia, Benjamin Wilson, Joe Fritsch

Seaver College Research And Scholarly Achievement Symposium

The mechanism for the ring-opening polymerization of lactide and ε-caprolactone is presented here with an aluminum-centered catalyst featuring a tridentate ligand and two alkoxide initiating ligands. In each homopolymerization, the addition of electron-withdrawing groups on the tridentate ligand lowers the activation energy of the reaction by increasing the electrophilicity of the central Aluminum. We further investigated the polymerizations by comparing the energy difference between copolymerization and homopolymerization following the initial ring opening as well as the potential for dual polymer chains from the insertion of both initiating ligand. Single chain polymerization is favored in every case, due to lower bond ...

It’S Raining : Remotely Accessible Instruments In Nanotechnology To Promote Student Success, Jared M. Ashcroft, Atilla Ozgur Cakmak, Jillian Blatti, Esteban Bautista, Vanessa Wolf, Felix Monge, Dwaine Davis, M. Josefina Arellano-Jimenez, Raymond Tsui, Richard Hill, Anthony Klejna, James S. Smith, Gabe Glass, Timothy Suchomski, Kristine J. Schroeder, Robert K. Ehrmann

Current Issues in Emerging eLearning

Remotely Accessible Instruments in Nanotechnology (RAIN) is a community of educators that aims to bring advanced technologies into K-12 and college classrooms via remote access. RAIN's mission is to facilitate the study of nanoscale science by lowering barriers for instructors to deliver relevant educational activities for younger students interested in learning about nanotechnology across traditional STEM fields. Additionally, RAIN engages the next generation STEM workforce with a connection to experts, tools and institutions where cutting-edge research is being performed. This resource is particularly vital for underrepresented and minority students, especially those attending institutions that cannot provide on-site access to ...

Ultrahigh Resolution Ft-Icr Ms Data Of Long-Range Transported Free Tropospheric Aerosol Collected At The Pico Mountain Observatory In The Azores, Simeon K. Schum, Lynn Mazzoleni

Lynn Mazzoleni

This dataset and the methods used to obtain it were described in “Molecular and physical characteristics of aerosol at a remote marine free troposphere site: Implications for atmospheric aging” submitted to Atmospheric Chemistry and Physics in February 2018. Briefly, three long-range transported organic aerosol samples were analyzed using negative mode electrospray ionization Fourier transform ion cyclotron mass spectrometry (FT-ICR MS) with a mass resolving power of 400,000 (defined at m/z 400). FLEXPART retroplume simulations indicated that two of the samples (PMO-1 & PMO-3) were influenced by North American wildfire emissions transported in the free troposphere and one (PMO-2) by ...

Supercell Crystal Structure Of Na2ga2(Bo3)2, Grace Brown

Student Research and Creative Activity Fair

Na₂Ga₂(BO₃)₂O is an oxyborate with a reported crystal structure in the trigonal space group P1c. The literature states that the three-dimensional structure is created from infinite stacking of parallel [NaGa₂(BO₃)₂] ∞ sheets separated by sodium layers. Our single-crystal X-ray diffraction data requires some modification to this structure. We believe that Na₂Ga₂(BO₃)₂O actually possesses a supercell crystal structure with lower symmetry. The borate anions within the [NaGa₂(BO₃)₂ ] sheets are not parallel to each other, but slightly tilted. This slight off-parallel ...

Electrochemical And Corrosion Examination Of Copper Under Deep Geologic Conditions For The Application Of Nuclear Waste Containers, Taylor L. Martino

Electronic Thesis and Dissertation Repository

Copper is the selected material for the fabrication of nuclear fuel waste containers in Sweden, Finland and Canada due to its corrosion resistance in the anoxic aqueous environments, anticipated in deep geological repositories. A potential oxidant for copper is bisulphide produced either by the dissolution of minerals or by sulphate-reducing bacteria. The primary goals of this thesis were to determine the mechanism of corrosion of copper in bisulphide environments and to investigate the chemistry of the bentonite porewater that will ultimately be in contact with the copper container.

The mechanism of sulphide film growth and the details of copper corrosion ...

The "Double Standard" Of Nonproliferation: Regime Type And The U.S. Response To Nuclear Weapons Program, Alina Shymanska

International Journal of Nuclear Security

There is no doubt that the NPT regime is far from being equal for all states involved. As the predominant hegemonic power since WWII, the United States plays a major role in deciding the fates of non-great power proliferators. This article tries to find the logical explanation of the phenomenon whereby some nuclear proliferators are absolved regardless of their active accumulation of nuclear arsenals while others are labeled as “rogue states” and ordered to disarm. The article suggests that a particular proliferator’s political regime could affect the way in which its state is approached by the U.S., known ...

Structure And Magnetic Properties Of A 1d Alternating Cu(Ii) Monomer―Paddlewheel Chain, Vanessa Machado, Mark M. Turnbull, Louise N. Dawe

Chemistry Faculty Publications

One-dimensional metal–organic coordination polymers make up a class of compounds with potential towards the development of practical, new magnetic materials. Herein, a rare example of an ABBABB coupled linear chain comprised of alternating dicopper(II) tetraacetate units bridged to copper(II) acetate monomer units via axial η²:η¹:µ₂ coordinated acetate is reported. Examination of the structure, determined by small molecule X-ray crystallography, shows that each Cu(II) ion is in a d_x2–_y2 magnetic ground state. Magnetic susceptibility and magnetization data were collected and, consistent with the structural interpretation, demonstrate that the ...

The Stress Of Public Speaking Increases Cortisol Levels In Undergraduates: Is Increased Preparation Really The Best Remedy?, Jodi F. Evans Ph.D., Erin Clinton, Grace Cookson, Stephanie Brown, Daniel Woods

Jodi Evans

Perceived stress is prevalent among the undergraduate population. When this stress persists, it has the potential to lead to mental health illnesses. Recent research shows 85% of students experience overwhelming anxiety from academic pressures. Physiologically, during stressful events, cortisol levels rise in the body which disrupts homeostasis. The anticipation prior to a class presentation, a form of public speaking, is a common source of perceived stress among undergraduates. The focus of this experiment was to determine if there is a correlation between factors such as increased preparedness, sleep, level of understanding, perceived anxiety and physiological stress parameters. Twenty-eight student volunteers ...

Stress Axis Hormones Induce Triglyceride Filled Nodule Formation In Vascular Smooth Muscle Cells, Jodi F. Evans Ph.D., Michelle Vigliotti, Pamela Tello

Jodi Evans

Homeostatic stress, such as that which occurs in diabetes, is associated with increased risk for the development of atherosclerosis. Atherosclerotic plaques of the artery wall are associated with both lipid accumulation and fibrous and/or calcified tissue accumulation. Vascular smooth muscle cells (VSMC) are derived from mesenchymal stem cells (MSC) which are capable of differentiating into adipocytes, chondrocytes and osteoblasts. MSC of the bone marrow are pushed toward the chondrogenic and adipogenic phenotypes in the presence of the stress hormones glucocorticoid and adrenocorticotropin (ACTH). This led us to hypothesize that the proliferative VSMC of the Goto-Kakizaki (GK) diabetic rat, when ...

Mouse Aorta-Derived Mesenchymal Progenitor Cells Contribute To And Enhance The Immune Response Of Macrophage Cells Under Inflammatory Conditions, Jodi F. Evans Ph.D., Veronica Salvador, Sheela George, Cristina Trevino-Gutierrez, Catherine Nunez

Jodi Evans

Abstract Introduction: Mesenchymal progenitor cells interact with immune cells and modulate inflammatory responses. The cellular characteristics required for this modulation are under fervent investigation. Upon interaction with macrophage cells, they can contribute to or suppress an inflammatory response. Current studies have focused on mesenchymal progenitors derived from bone marrow, adipose, and placenta. However, the arterial wall contains many mesenchymal progenitor cells, which during vascular disease progression have the potential to interact with macrophage cells. To examine the consequence of vascular-tissue progenitor cell-macrophage cell interactions in an inflammatory environment, we used a recently established mesenchymal progenitor cell line derived from the ...

Effect Of Circular Motion Exercise On Bone Modeling And Bone Mass In Young Rats: An Animal Model Of Isometric Exercise, Jodi F. Evans Ph.D., J. K. Yeh, Q. Niu, J. Iwamoto, J. F. Aloia

Jodi Evans

The aims of the study are to develop a non-invasive animal model of circular motion exercise and to evaluate the effect of this type of exercise on bone turnover in young rats. The circular motion exercise simulates isometric exercise using an orbital shaker that oscillates at a frequency of 50 Hz and is capable of speeds from 0-400 rpm. A cage is fixed on top of the shaker and the animals are placed inside. When the shaker is turned on, the oscillatory movement should encourage the animals to hold on to the cage and use various muscle forces to stabilize ...

Mouse Mesenchymal Progenitor Cells Expressing Adipogenic And Osteogenic Transcription Factors Suppress The Macrophage Inflammatory Response, Jodi F. Evans Ph.D., Natalie Fernandez, Heather Renna, Lauren Mchugh, Katie Mazolkova, William Crugnola

Jodi Evans

Mesenchymal progenitor cell characteristics that can identify progenitor populations with specific functions in immunity are actively being investigated. Progenitors from bone marrow and adipose tissue regulate the macrophage (MΦ) inflammatory response by promoting the switch froman inflammatory to an anti-inflammatory phenotype.Conversely,mesenchymal progenitors fromthe mouse aorta (mAo) support and contribute to the MΦ response under inflammatory conditions.We used cell lines with purported opposing immune-regulatory function, a bonemarrow derivedmesenchymal progenitor cell line (D1) and amouse aorta derived mesenchymal progenitor cell line (mAo). Their interaction and regulation of the MΦ cell response to the inflammatory mediator, lipopolysaccharide (LPS), was examined ...

Cd105 Deficieny In Mouse Aorta-Derived Mesenchymal Stem Cells Promotes An Enhanced Inflammatory Response To Lipolysaccharide., Jodi F. Evans Ph.D., Joseph Granata, Hugo Sanchez, Philip Loeschinger, Anthony Goez

Jodi Evans

Mesenchymal stem cells (MSCs) are being widely studied for their ability to regulate macrophage cell responses. Previous works have demonstrated that mouse aorta-derived MSC (mAo-MSC) support the macrophage inflammatory response. mAo-MSC have been characterized phenotypically for MSC-associated surface antigens and express CD90 and CD105 but do not express CD73. CD105, also known as endoglin, is a coreceptor in the TGFβ superfamily of receptors. Mouse adipose-derived MSC lacking CD105 have an increased capacity to regulate T-cells by reducing their proliferation while elevated CD105 expression is consistently associated with inflammatory disease. Therefore, we hypothesized that suppression of CD105 in mAo-MSC will reduce ...

Does Stress Make You Fat?, Jodi F. Evans Ph.D., Thomas Rhodes, Michelle Pazienza, Catherine Nunez

Jodi Evans

ACTH is a major hormone of the stress axis or hypothalamic-pituitary-adrenal (HPA) axis. It is derived from pro-opiomelanocortin (POMC) the precursor to the melanocortin family of peptides. POMC produces the biologically active melanocortin peptides via a series of enzymatic steps in a tissue-specific manner, yielding the melanocyte-stimulating hormones (MSHs), corticotrophin (ACTH) and β-endorphin. The melanocortin system plays an imperative role in energy expenditure, insulin release and insulin sensitivity. Bone marrow derived mesenchymal stem cells circulate in the blood stream and as progenitor cells have the potential to differentiate into many cell types such as osteoblasts, chondrocytes and adipocytes. Here we ...