Digital Commons Network^™

Gold Nanomolecules: Nanomolecular Metallurgy, Crystal Structures, And Stability, Kalpani Eshangi Hirunika Wijesinghe

Electronic Theses and Dissertations

Gold nanomolecules are atomically monodisperse nano-particles having a precise number of gold atoms and thiolate ligands. The 1–3 nm size range exhibit size-dependent molecule-like properties and have gained broad interest due to their applications in imaging, catalytic activity, biosensing, and drug delivery. The capping ligand governs the physio-chemical properties of an AuNM. Based on the C-S bonding, there are three groups of thiols. Aliphatic thiol, such as phenyl ethane thiol, has a sulfur atom directly bonded to an aliphatic group. 4-tert-Butylbenzene thiol is an aromatic ligand as the sulfur atom is directly bonded to an aromatic carbon. The next group …

Preparation Of Methanediamine (Ch2(Nh2)2)—A Precursor To Nucleobases In The Interstellar Medium, Joshua H. Marks, Jia Wang, Ryan C. Fortenberry, Ralf I. Kaiser

Faculty and Student Publications

Although methanediamine (CH2(NH2)2) has historically been the subject of theoretical scrutiny, it has never been isolated to date. Here, we report the preparation of methanediamine (CH2(NH2)2)—the simplest diamine. Low-temperature interstellar analog ices composed of ammonia and methylamine were exposed to energetic electrons which act as proxies for secondary electrons produced in the track of galactic cosmic rays. These experimental conditions, which simulate the conditions within cold molecular clouds, . result in radical formation and initiate aminomethyl (ĊH2NH2) and amino (NH2) radical chemistry. Exploiting tunable photoionization reflectron time-of-flight mass spectrometry (PI-ReToF-MS) to make isomer-specific assignments, methanediamine was identified in the gas …

Mississippi Writers Page, University Of Mississippi. Department Of English, University Of Mississippi Libraries

MWP Projects

This open educational resource preserves much of the original text from the Mississippi Writers Page, an online site maintained by the University of Mississippi's Department of English from the late 1990s through the mid-2000s. Focusing on writers both born and working in Mississippi, it included biographies of the writers, information about their books and other publications, and bibliographies of other information sources (including literary criticism).

Staff from the University of Mississippi Libraries compiled the text into an open volume in 2022, but did not revise the original work.

Linguistics Professor Secures Grant To Study Wordlikeness Judgments, Erin Garrett

University of Mississippi News

National Science Foundation-funded project to include native English and Korean speakers

The Effects Of Survival, Pleasantness, And Storytelling Conditions On True And False Memory Recollection, Rachel Daniels

Honors Theses

The purpose of the present study was to analyze the extent to which various processing scenarios influenced participants' rates of true and false memory recollection. Participants were placed in one of three conditions, storytelling, survival, or pleasantness, and then studied a list of common nouns. They were then instructed to comment on the words in a specific manner depending on the condition to which they were randomly assigned. Following this, participants completed a math distractor task, and were then asked to complete a free recall test for the previously studied words. The results indicated that participants in the storytelling condition …

The Spectral Features And Detectability Of Small, Cyclic Silicon Carbide Clusters, Christopher M. Sehring, C. Zachary Palmer, Brent R. Westbrook, Ryan C. Fortenberry

Faculty and Student Publications

Rovibrational spectral data for several tetra-atomic silicon carbide clusters (TASCCs) are computed in this work using a CCSD(T)-F12b/cc-pCVTZ-F12 quartic force field. Accurate theoretical spectroscopic data may facilitate the observation of TASCCs in the interstellar medium which may lead to a more complete understanding of how the smallest silicon carbide (SiC) solids are formed. Such processes are essential for understanding SiC dust grain formation. Due to SiC dust prevalence in the interstellar medium, this may also shed light on subsequent planetary formation. Rhomboidal Si2C2 is shown here to have a notably intense (247 km mol−1) anharmonic vibrational frequency at 988.1 cm−1 …

A Survey Of Speech-Language Pathologists' Academic Preparation In Craniofacial Anomalies, Francesca Myerski

Honors Theses

Craniofacial anomalies occur in 1 of 750 newborns a year with the three main types being cleft lip, cleft palate, and cleft lip and/or cleft palate. There are six main factors that affect craniofacial anomalies that are focused on in this research, including genetics, environmental factors, medications, diet, health risks, and surgical procedures/surgeons. The research found that there is a lot of information on craniofacial anomalies and speech-language pathologists need to learn about as much as possible. The lack of knowledge and academic preparations speech-language pathologists have in craniofacial anomalies has decreased their awareness in the birth defect and has …

Discovery Of A Lectin Domain That Regulates Enzyme Activity In Mouse N-Acetylglucosaminyltransferase-Iva (Mgat4a), Masamichi Nagae, Tetsuya Hirata, Hiroaki Tateno, Sushil K. Mishra

Faculty and Student Publications

N-Glycosylation is a common post-translational modification, and the number of GlcNAc branches in N-glycans impacts glycoprotein functions. N-Acetylglucosaminyltransferase-IVa (GnT-IVa, also designated as MGAT4A) forms a β1-4 GlcNAc branch on the α1-3 mannose arm in N-glycans. Downregulation or loss of GnT-IVa causes diabetic phenotypes by dysregulating glucose transporter-2 in pancreatic β-cells. Despite the physiological importance of GnT-IVa, its structure and catalytic mechanism are poorly understood. Here, we identify the lectin domain in mouse GnT-IVa’s C-terminal region. The crystal structure of the lectin domain shows structural similarity to a bacterial GlcNAc-binding lectin. Comprehensive glycan binding assay using 157 glycans and solution NMR …

Validated Determination Of Nrg1 Ig-Like Domain Structure By Mass Spectrometry Coupled With Computational Modeling, Niloofar Abolhasani Khaje, Alexander Eletsky, Sarah E. Biehn, Charles K. Mobley

Faculty and Student Publications

High resolution hydroxyl radical protein footprinting (HR-HRPF) is a mass spectrometry-based method that measures the solvent exposure of multiple amino acids in a single experiment, offering constraints for experimentally informed computational modeling. HR-HRPF-based modeling has previously been used to accurately model the structure of proteins of known structure, but the technique has never been used to determine the structure of a protein of unknown structure. Here, we present the use of HR-HRPF-based modeling to determine the structure of the Ig-like domain of NRG1, a protein with no close homolog of known structure. Independent determination of the protein structure by both …

Experimental Identification Of Aminomethanol (Nh2ch2oh)—The Key Intermediate In The Strecker Synthesis, Santosh K. Singh, Cheng Zhu, Jesse La Jeunesse, Ryan C. Fortenberry, Ralf I. Kaiser

Faculty and Student Publications

The Strecker Synthesis of (a)chiral α-amino acids from simple organic compounds, such as ammonia (NH3), aldehydes (RCHO), and hydrogen cyanide (HCN) has been recognized as a viable route to amino acids on primordial earth. However, preparation and isolation of the simplest hemiaminal intermediate – the aminomethanol (NH2CH2OH)– formed in the Strecker Synthesis to even the simplest amino acid glycine (H2NCH2COOH) has been elusive. Here, we report the identification of aminomethanol prepared in low-temperature methylamine (CH3NH2) – oxygen (O2) ices upon exposure to energetic electrons. Isomer-selective photoionization time-of-flight mass spectrometry (PI-ReTOF-MS) facilitated the gas phase detection of aminomethanol during the temperature …

Shared Genomic Architectures Of Covid-19 And Antisocial Behavior, Charleen D. Adams, Jorim J. Tielbeek, Brian B. Boutwell

Faculty and Student Publications

Little is known about the genetics of norm violation and aggression in relation to coronavirus disease 2019 (COVID-19). To investigate this, we used summary statistics from genome-wide association studies and linkage disequilibrium score regression to calculate a matrix of genetic correlations (rgs) for antisocial behavior (ASB), COVID-19, and various health and behavioral traits. After false-discovery rate correction, ASB was genetically correlated with COVID-19 (rg = 0.51; P = 1.54E-02) and 19 other traits. ASB and COVID-19 were both positively genetically correlated with having a noisy workplace, doing heavy manual labor, chronic obstructive pulmonary disease, and genitourinary diseases. ASB and COVID-19 …

South-To-North Migration Preceded The Advent Of Intensive Farming In The Maya Region, Douglas J. Kennett, Mark Lipson, Keith M. Prufer, David Mora-Marín, Richard J. George, Nadin Rohland, Mark Robinson, Willa R. Trask, Heather H. J. Edgar, Ethan C. Hill, Erin E. Ray, Paige Lynch, Emily Moes, Lexi O’Donnell, Thomas K. Harper, Emily J. Kate, Josue Ramos, John Morris, Said M. Gutierrez

Faculty and Student Publications

The genetic prehistory of human populations in Central America is largely unexplored leaving an important gap in our knowledge of the global expansion of humans. We report genome-wide ancient DNA data for a transect of twenty individuals from two Belize rock-shelters dating between 9,600-3,700 calibrated radiocarbon years before present (cal. BP). The oldest individuals (9,600-7,300 cal. BP) descend from an Early Holocene Native American lineage with only distant relatedness to present-day Mesoamericans, including Mayan-speaking populations. After ~5,600 cal. BP a previously unknown human dispersal from the south made a major demographic impact on the region, contributing more than 50% of …

Space Arbitration And Harmful Interference Disputes, Laura Yvonne Zielinski

Journal of Space Law

No abstract provided.

Satellite Data And Imagery As Evidence, Ronald J. Rychlak, Sean Patrick Taylor

Journal of Space Law

No abstract provided.

December 1, 2022, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Newsletter, November 2022, Cedar Oaks Guild

Cedar Oaks Guild Newsletter

No abstract provided.

Indirectly And Directly Involved Students' Perspectives On Multi-Modal Communication Treatment In Persons With Aphasia, Emily Lewis

Honors Theses

Our study investigated the perspectives of students who were either directly or indirectly involved in the Multi-modal communication treatment (MCT) sessions for persons with aphasia. Two undergraduate and two graduate students were recruited from the University of Mississippi who participated in the MCT sessions. We collected their perspectives through semi-structured interviews and used thematic qualitative analysis to analyze our data. We reported themes from the indirectly involved students and the directly involved students and compared how the themes were similar and different between the indirectly and directly involved students. We discussed that both direct and indirect experience for clinical therapy …

Um Community Remembers Sociology Professor Willa Johnson, Erin Garrett

University of Mississippi News

Memorial service set for Nov. 28 at Paris-Yates Chapel

November 17, 2022, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Commdent Letters On Proposed Peer Review Standards Update No. 1, Omnibus Enhancements And Technical Corrections, American Institute Of Certified Public Accountants. Peer Review Board

Exposure Drafts, Comment Letters, and Statements of Position

No abstract provided.

Proposed Peer Review Standards Update No. 1, Omnibus Enhancements And Technical Corrections; Exposure Draft (American Institute Of Certified Public Accountants), 2022, November 16, American Institute Of Certified Public Accountants. Peer Review Board

Exposure Drafts, Comment Letters, and Statements of Position

No abstract provided.

Theoretical Spectra And Energetics For C-C3hc2h, L-C5h2, And Bipyramidal D3h C5h2, Alexandria G. Watrous, Brent R. Westbrook, Ryan C. Fortenberry

Faculty and Student Publications

The recent astronomical detection of c-C3HC2H and l-C5H2 has led to increased interest in C5H2 isomers and their relative stability. The present work provides the first complete list of anharmonic vibrational spectral data with infrared intensities for three such isomers as well as including the first set of rotational data for the bipyramidal C5H2 isomer allowing for these molecules to serve as potential tracers of interstellar carbon. All three isomers have fundamental vibrational frequencies with at least one notably intense fundamental frequency. The l-C5H2 isomer has, by far, the highest intensities out of the three isomers at 2076.3 cm−1 (738 …

November 10, 2022, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Finding Aid For The William Winter Institute For Racial Reconciliation Collection (Mum00793)

Archives & Special Collections: Finding Aids (alphabetical)

Correspondence, planning documents, event documents, publications, protest signs, audio/video materials, and ephemera created and collected by Institute staff.

Finding Aid For The General Wirt Adams Collection (Mum00755)

Archives & Special Collections: Finding Aids (alphabetical)

Collection of papers relating primarily to the life and military career of General William Wirt Adams. Bulk of collection consists of Civil War era correspondence and documents collected in two scrapbooks by Adams following 1865.

Finding Aid For The Cultural Events Collection (Mum00547)

Archives & Special Collections: Finding Aids (alphabetical)

Collection contains programs and schedules related to cultural events at the University of Mississippi from 1907-2006.

Finding Aid For The World War Ii Memories Collection (Mum00485)

Archives & Special Collections: Finding Aids (alphabetical)

Collection contains Christmas cards, postcards, correspondence, newsletters, and research material related to Mississippians and University of Mississippi students who fought in World War II. Items were created 1938-1994.

Finding Aid For The Ed King Collection (Mum00251)

Archives & Special Collections: Finding Aids (alphabetical)

Newspaper clippings, newsletters, pamphlets, programs, posters, and other printed material documenting race relations and civil rights activism in Mississippi from 1953 to 1983, collected by the Reverend Edwin King. King, a native Mississippian, was a key figure in the Mississippi civil rights movement and a leader of the Mississippi Freedom Democratic Party.

Finding Aid For The Barry Hannah Collection (Mum00216)

Archives & Special Collections: Finding Aids (alphabetical)

Collection consists of correspondence and typescripts related to the life of Barry Hannah. Items were created 1978-1993.

Finding Aid For The Louis Dollarhide Collection (Mum00108)

Archives & Special Collections: Finding Aids (alphabetical)

Collection consists of correspondence, and various miscellaneous items, such as pamphlets, documents, and photographs related to the life of Louis Dollarhide created from 1950-1973.