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Articles 2071 - 2100 of 8928
Full-Text Articles in Entire DC Network
Iodination Of 3,5-Dichloroanisole Using Silver Salts, Alex Fan
Iodination Of 3,5-Dichloroanisole Using Silver Salts, Alex Fan
Honors Theses
A paper published by Joshi et al. showed lower than expected yields in mono- and di-iodination of 3,5-dichloroanisole in dichloromethane using silver salts. One possibility for this could be that the starting material was being tri-iodinated and precipitating out of the solution. We used similar reaction conditions in attempts to prepare and isolate triiodinated product, but attempts of recrystallization from ethanol, DMSO, and 2- methoxyethanol showed no signs of it. Removal of silver iodide from the solids formed during the reaction using aqueous potassium iodide resulted in complete dissolution of the entire crude product, suggesting no organic product as well. …
Early Foreign Language Education And The Effect On State-Mandated Standardized Testing Scores, Kaitlyn Elizabeth Duda
Early Foreign Language Education And The Effect On State-Mandated Standardized Testing Scores, Kaitlyn Elizabeth Duda
Honors Theses
Early foreign language education has been shown to have a positive effect on the performance of students on state-mandated standardized scores. This work gives an overview of the history of foreign language education, as well as a description of a specific program at an elementary school in North Texas. In order to analyze the effects of early foreign language immersion education on the performance of students enrolled in the program at Bedford Heights Elementary school, a statistical evaluation was performed using the STAAR scores of 3rd, 4th, and 5th grade students enrolled in both the foreign language immersion program and …
Perceptions Of Headache Trigger Potency, Katelyn Sharpe
Perceptions Of Headache Trigger Potency, Katelyn Sharpe
Honors Theses
No abstract provided.
Raman Spectroscopic Studies Of Novel Gold-Containing Nanomaterials, Lemuel Shui-Lun Tsang
Raman Spectroscopic Studies Of Novel Gold-Containing Nanomaterials, Lemuel Shui-Lun Tsang
Honors Theses
The thiolate-protected gold nanocluster (AuNP) Au38(SCH2CH2Ph)24 was studied using Raman spectroscopy with particular attention to the vibrational modes of the gold-sulfur interface. Such studies of AuNPs are non-trivial, as these materials are weak scatterers that burn and fluoresce readily. Previous works have successfully studied this class of materials using a rolling circle filter to subtract fluorescence backgrounds, but we set out to develop a method which would suppress fluorescence using more fundamental means. For Au38(SCH2CH2Ph)24, it was found that data acquisition was most effective using lower-energy excitation wavelengths, which could be predicted based on the UV-Vis absorption spectrum of the …
Assessment Of Vadose-Zone Wells For Enhancing Groundwater Recharge In The Mississippi Delta, Luke Jenkins
Assessment Of Vadose-Zone Wells For Enhancing Groundwater Recharge In The Mississippi Delta, Luke Jenkins
Honors Theses
Current pumping rates in the Mississippi River Valley Alluvial Aquifer in the Mississippi Delta are unsustainable as they are depleting the water level in the aquifer. The following thesis is a feasibility analysis on groundwater recharge to the Mississippi River Valley Alluvial Aquifer using vadose zone wells. Two days were spent in the field at Sky Lake near Belzoni, Mississippi, collecting core soil samples, bag soil samples, and constant head hydraulic conductivity values. Numerous days were spent in the lab conducting sieve analyses, Atterberg limits, and falling head hydraulic conductivity tests. The Atterberg limit test and sieve analyses were used …
Barriers To The Provision Of High-Quality Early Childhood Education In The Mississippi Delta, Mackenzie Poole
Barriers To The Provision Of High-Quality Early Childhood Education In The Mississippi Delta, Mackenzie Poole
Honors Theses
High-quality early childhood education has been shown to enhance the development of social, emotional, cognitive, language, and literacy skills in young children (Burchinal, Peisner-Feinberg, Bryant, & Clifford, 2000; Loeb, Fuller, Kagan, & Carrol, 2004; Peisner-Feinberg et al., 2001). Barriers encountered when attempting to provide high-quality early childhood education in the Mississippi Delta were investigated by analyzing the opinions and perceptions of early childhood educators. Requests for participation in the study were mailed to 92 child care facilities, and individuals from three licensed child care centers in the region participated. Opinions were gathered using questionnaires (n = 20) and interviews (n …
Cognitive Biases And Reflexive Control, Natalie Minton
Cognitive Biases And Reflexive Control, Natalie Minton
Honors Theses
Manipulating an opponent is nothing new to warfare, but what is new is the understanding behind modern tactics, psychology, and the how the two intertwine under real world circumstances. One modern tactic, particularly used by the Russian government, is called reflexive control. This hybrid warfare tactic is used to manipulate an opponent into unknowingly making decisions benefiting the manipulator while harming the opponent. Though executed through many outlets, reflexive control is aimed at flaws within the opponent's decision making process. Many such flaws are categorized as cognitive biases derived from mental shortcuts that can lead the brain to misjudge information. …
Cytotoxicity Assay Of Self-Assembling Protein-Based Biomaterials, Peyton Vaughan
Cytotoxicity Assay Of Self-Assembling Protein-Based Biomaterials, Peyton Vaughan
Honors Theses
Acute inflammation is a natural biological defensive response against infection,irritation, and injury. While inflammation is a natural process, chronic tissue inflammation has been implicated in the development of several different diseases. With the intent of minimizing collateral damage associated with long-term exposure of healthy tissues to anti-inflammatory drugs, the Pedigo laboratory has designed a system for the self-assembly of protein polymers as scaffolds for controlled-release of drugs to affected tissues. This protein polymer comprises two essential components, with the first component being the calcium-dependent protein, calmodulin, and the second being a corresponding binding peptide, M13. Because Calmodulin has a specific, …
Utilizing Natural Language Processing And Other Technical Tools To Automate The Financial Modeling Process While Maintaining Robustness In The Model, Robert Forrest Short
Utilizing Natural Language Processing And Other Technical Tools To Automate The Financial Modeling Process While Maintaining Robustness In The Model, Robert Forrest Short
Honors Theses
The objective of this thesis is to improve upon the most commonly utilized, entirely manual financial modeling process. This thesis gives guidance for implementing a set of technical tools that can be utilized in an individual's financial modeling process to automate repetitive and predictable tasks. The goal is not to provide a robust set of tools that can be implemented across all financial models; in fact, this may not be possible. The goal is to provide a basis for anyone who utilizes financial modeling to study their own modeling processes and adapt the given tools to fit into and improve …
Gold And Alloy Nanomolecules: Synthesis, Ligand Induced Core Conversion, Characterization, And Atomic Structure, Shevanuja Theivendran
Gold And Alloy Nanomolecules: Synthesis, Ligand Induced Core Conversion, Characterization, And Atomic Structure, Shevanuja Theivendran
Honors Theses
Gold nanoparticles have wide range of applications in the field of sensing, imaging, cancer therapy, and other biomedical applications. It is desired to have monodisperse and atomically precise gold nanoparticles to have better control and effective utilization of that nanoparticle. The nanoparticles that are less than 2 nm in size with precise number of atoms and ligands (± 0 atoms) which exhibit unique physical, chemical and optoelectronic properties are called as gold nanomolecules. This thesis presents the synthetic methodology and isolation of various monodisperse atomically precise nanomolecules and their characterization. UV-vis spectroscopy, Electrospray Ionization Mass Spectrometry (ESI-MS), Matrix Assisted Laser …
Quercitrin And Afzelin Isolation: Chemical Synthesis Of A Novel Methicillin-Resistant Staphylococcus Aureus (Mrsa) Antibiotic Analogue, Taylor Ramsaroop
Quercitrin And Afzelin Isolation: Chemical Synthesis Of A Novel Methicillin-Resistant Staphylococcus Aureus (Mrsa) Antibiotic Analogue, Taylor Ramsaroop
Honors Theses
The increasing prevalence of bacterial resistance to antibiotics is an epidemic where once easily treated infectious illnesses are becoming more difficult to treat, leading to prolonged suffering, exacerbated medical costs, and sometimes death. Methicillin-Resistant S. aureus (MRSA) is a strain of the Staph Infection causing bacteria that is resistant to penicillin-like beta lactam antibiotics and occurs at a high incidence in several countries in Europe, the Americas, and the Asia-Pacific region. In a routine screening of plant extracts, an extract of American Sycamore leaves (Plantus occidentalis) was noted to show promising activity against the experimental MRSA strain included in the …
The Implementation Of Multicultural Literature In The Secondary English Classroom: A Preservice Teacher's Experience, Jenna L. Smiley
The Implementation Of Multicultural Literature In The Secondary English Classroom: A Preservice Teacher's Experience, Jenna L. Smiley
Honors Theses
Even though the United States is more diverse than ever before in its history, selected literary texts in the secondary English curriculum have largely remained the same over past decades with minimal inclusion of multicultural literature - literature that is written by or about minority cultures. Multicultural literature is a subset of the greater idea of multicultural education, which is an education that is inclusive of all cultures with the goal of preparing all students to be productive citizens in a diverse, global society. Teachers are hesitant to use multicultural literature because of their implicit biases, neglect of inquiry, and …
An Analysis Of The Acid Profile Of Coffee Brews: Caffeine And Chlorogenic Acid Concentrations In Different Forms Of Coffee Brew, Jeffory Taylor Wallace
An Analysis Of The Acid Profile Of Coffee Brews: Caffeine And Chlorogenic Acid Concentrations In Different Forms Of Coffee Brew, Jeffory Taylor Wallace
Honors Theses
In this project, different coffee brews were analyzed in order to determine the effects the brewing method had on the final product, particularly the acid profile of the final product. Our hypothesis is that the use of a cold brewing method will produce different amounts of caffeine and chlorogenic acids in the final brewed product compared to traditional hot brewing methods. There are many brewing methods available. For the purposes of this research, three were chosen and one was created. The three chosen methods were: a traditional drip brew, a cold brew, and a Pezzetti espresso brew. The final method …
An Analysis Of Entrepreneurial Education In The Criminal Justice System, Austin Powell
An Analysis Of Entrepreneurial Education In The Criminal Justice System, Austin Powell
Honors Theses
Currently, American federal and state prisons release more than 600,000 offenders each year that contribute to the estimated 70 million or more Americans that have some form of criminal record. By holding a criminal record, successful reentry for offenders are difficult because the criminal record serves as a barrier to public benefits. There are many correctional education programs designed to help offenders while in prison to overcome these barriers. Entrepreneurial education programs are becoming more popular, due to the positive recidivism and post-release employment results. The purpose of this study is to compare entrepreneurial education to other programs while analyzing …
Synthesis Of Cross-Conjugated Dibenzochrysene-Based Photosensitizers For Dye-Sensitized Solar Cells, Bailey Nicole Flamm
Synthesis Of Cross-Conjugated Dibenzochrysene-Based Photosensitizers For Dye-Sensitized Solar Cells, Bailey Nicole Flamm
Honors Theses
Dye-sensitized solar cells (DSCs) represent a promising alternative method of energy generation. Absorbance of light across the visible spectrum and into the near-infrared (NIR) region is crucial to increasing the power conversion efficiencies (PCEs) of DSC devices. Dye absorbance can be red-shifted by either increasing the conjugation path of the photosensitizer or by increasing the strength of electron donors and acceptors found in molecules. By using a polycyclic aromatic Ï€-bridge in a dye, lower energy wavelengths of light can be absorbed. Dibenzochrysene is a six-ring polycyclic aromatic hydrocarbon (PAH) with substitutable positions that allow for a double-donor, double-acceptor (DD-Ï€-AA) structure, …
Towards The Synthesis Of A Polyamine Perylenebisimide Derivative For Intercalation Into Quadruplex Dna, Bobby May
Honors Theses
Perylenebisimide intercalation in G-quadruplex DNA is an area of study that has increasing interest in cancer research. The ability of perylenebisimides to interrupt the structures of the G4 DNA on the end of telomeres has allowed for the observation of how the variable-regions of the perylenebisimide can have differing effects on anticancer properties. The purpose of this experiment was to synthesize a perylenebisimide with the intentions of observing its intercalating properties with G-quadruplex DNA. In order to accomplish this, dibenzylamine was substituted onto chloroacetonitrile through an SN2 reaction to produce 2-(dibenzylamino)acetonitrile. The 2-(dibenzylamino)acetonitrile was then reduced with LAH to yield …
Isolation And Identification Of Bioactive Constituents Of Plant Pathogenic Fungi And Targeted Synthesis Of Isochromanone Analogs, Brandon Clausen
Isolation And Identification Of Bioactive Constituents Of Plant Pathogenic Fungi And Targeted Synthesis Of Isochromanone Analogs, Brandon Clausen
Honors Theses
An unknown fungal species was cultured from necrotic Brachiaria eruciformis leaves found in Oxford, Mississippi. The fungus was identified via molecular techniques as Pyricularia grisea. This fungus was grown on Czapek Dox broth culture medium for 21 days under continuous light at 24 0C. The culture filtrate was extracted with ethyl acetate and concentrated. The major bioactive compound, namely pyrichalasin H, was isolated using TLC-guided fractionation and identified via spectroscopic techniques. The compound was then tested for bioactivity on monocotyledons, dicotyledons and agriculturally important fungal species. Cellular leakage, chlorophyll content and root/shoot length bioassays were also performed to probe the …
Cadmium Disruption Of Calcium-Dependent Dimerization Of Neural Cadherin, Dylan Ritter
Cadmium Disruption Of Calcium-Dependent Dimerization Of Neural Cadherin, Dylan Ritter
Honors Theses
Cadherins are a family of transmembrane proteins that dimerize to form junctions between cells in the presence of calcium. Due to the necessity for proper cell adhesion during cell differentiation in development, we are examining whether binding of other metallic divalent cations would disrupt calcium-sensitive dimerization of neural cadherin in vitro. Specifically, we are studying the effect of cadmium(II) on the linkage between calcium binding, dimerization, and dimer disassembly. Cadmium toxicity became recognized during the Industrial Revolution, with particular attention gained during the Itai-Itai disease outbreak in China during the 1910s. This toxicity, partnered with the role of cadherin in …
Understanding Business Valuation : A Practical Guide To Valuing Small To Medium-Sized Businesses, Gary R. Trugman
Understanding Business Valuation : A Practical Guide To Valuing Small To Medium-Sized Businesses, Gary R. Trugman
Guides, Handbooks and Manuals
No abstract provided.
Mixed-Mode Surveys Compared With Single Mode Surveys: Trends In Responses And Methods To Improve Completion, Virginia M. Lesser, Lydia D. Newton, Daniel K. Yang, Jean C. Sifneos
Mixed-Mode Surveys Compared With Single Mode Surveys: Trends In Responses And Methods To Improve Completion, Virginia M. Lesser, Lydia D. Newton, Daniel K. Yang, Jean C. Sifneos
Journal of Rural Social Sciences
This article reviews recent trends in modes of conducting surveys and presents results from a series of experiments comparing different approaches for collecting survey data and improving response rates in general population studies. The modes examined include the telephone, mail, and a mixed-mode method which combines mail with Web data collection. A series of studies were conducted by the Oregon State University Survey Research Center from 2006-2014 using probability samples of Oregon residents. Response rates and the percent of respondents completing the questionnaires by Web were compared. The results showed that response rates were increased by modifying the cover letter …
Another Look At Likert Scales, Fern K. Willits, Gene L. Theodori, A. E. Luloff
Another Look At Likert Scales, Fern K. Willits, Gene L. Theodori, A. E. Luloff
Journal of Rural Social Sciences
Perhaps the most widely used means for assessing survey respondents’ personal attitudes consists of a series of stem-statements followed by an odd or even number of ordered, bipolar-named categories. Such statements, known as Likert items, are named for Rensis Likert whose classic studies of attitude measurement were first published in 1932. Almost from the beginning, methodologists and psychometric scholars have raised questions concerning the number of items deemed necessary to form an attitude scale, the number and meaning of various answer categories, and the appropriate statistical methods to use in analyzing the resulting data. These deliberations are summarized. We conclude …
Engineers Chart Their Own Course In 'A Man's World', Edwin Smith
Engineers Chart Their Own Course In 'A Man's World', Edwin Smith
University of Mississippi News
Three female UM graduates find success with Cooper Tire Co.
Um Engineering School Creates Biomedical Degree Program, Edwin Smith
Um Engineering School Creates Biomedical Degree Program, Edwin Smith
University of Mississippi News
Curriculum will prepare students for range of career opportunities in cutting-edge field
Charting Their Own Course, Edwin Smith
Charting Their Own Course, Edwin Smith
University of Mississippi News
Three female chemical engineering graduates find success with Cooper Tire Co.
Um Welcomes 'New Friends And Kindred Spirits', Katie Morrison
Um Welcomes 'New Friends And Kindred Spirits', Katie Morrison
University of Mississippi News
University's freshman class of Stamps Scholars is nation's third-largest
November 16, 2016, The Daily Mississippian
November 16, 2016, The Daily Mississippian
Daily Mississippian (all digitized issues)
No abstract provided.
November 11, 2016 Special Issue, The Daily Mississippian
November 11, 2016 Special Issue, The Daily Mississippian
Daily Mississippian (all digitized issues)
Investiture of Chancellor Jeffrey S. Vitter
November 10, 2016, The Daily Mississippian
November 10, 2016, The Daily Mississippian
Daily Mississippian (all digitized issues)
No abstract provided.
November 7, 2016, The Daily Mississippian
November 7, 2016, The Daily Mississippian
Daily Mississippian (all digitized issues)
No abstract provided.