Developing Patterns of Phage Infection by Investigating Superinfection Immunity

We are seeing an epidemic of antibiotic resistance in bacterial infections. When searching for a solution to refrain from killing good bacteria and avoiding multi-drug-resistance in certain bacterial infections, we stumble across the use of phage therapy

Wiley Funeral Home records

Records from the Wiley Funeral Home, Arkadelphia, established by Felix Wiley in the early 1940s. Wiley ran the funeral home until his retirement circa 1966, when George D. Mitchell, Jr., purchased the funeral home, which primarily served African American customers in and around Clark County. The records consist of copies of Arkansas death certificates, burial transit permits, burial insurance cards, and various other business records, such as receipts and invoices

Biology/Chemistry Speaker

Julie Stanley Starling, an OBU alumna from the class of 2015, was the speaker for the Biology/Chemistry presentations of the 2025 Arkansas Women in STEM conference. She share some of her journey that brought her to her current position as a chemist for a specialty oil company

The Analysis of BPA Leaching in Various Types of Athletic Wear using Fluorescence Spectrometry

Bisphenol A (BPA) is the most common endocrine-disrupting chemical that has been used in polycarbonate plastics and epoxy resins. BPA has been linked to several health issues due to binding to estrogen receptors. BPA is associated with an increase of ovarian, breast, prostate, and testicular cancer as well as low sperm count, motility and abnormal morphology of sperm, birth defects, early puberty, and Polycystic Ovary Syndrome. The item of focus for this research project was athletic wear. BPA can be absorbed dermally which is concerning because clothes have prolonged dermal contact with various types of tissue. Prior research at Ouachita Baptist University had found the presence of BPA in several brands of leggings. BPA leaching from different types of athletic wear were tested in a 50:50 methanol/water mixture as well as in artificial sweat. BPA leaching was observed and measured with a spectrofluorometer. BPA is a fluorescent compound, which means following excitation, it will emit radiation at a longer wavelength than the exciting wavelength. BPA is excited at 275 nm and emits at 306nm. This emitted light was measured and correlated to the concentration of BPA present in the sample. Fluorescence is a very sensitive and selective technique, which makes it possible to determine very low concentrations of BPA with few concerns about contamination. To compare the BPA leaching behavior of different types of athletic wear, a calibration curve was first established to help correlate the concentration of BPA in a standard solution to fluorescence emission intensity. The BPA leaching was monitored over the course of six hours, and a leaching curve was prepared for each sample. BPA is found in very small concentrations in clothes; therefore, the standard addition method was used to calculate the unknown BPA concentration by the addition of a BPA standard solution to the testing solutions

Doris Lisemby papers

Interview notes and newspaper articles collected and published by Doris Lisemby in the Clark County newspaper, the Southern Standard, as part of the Arkansas sesquicentennial celebration from 1985-1987. Also includes scrapbook of printed newspaper articles

Davidson Methodist Campground records

Meeting minutes, land deeds and documents, and legal correspondence relating to the Davidson Methodist Campground in Clark County, Arkansas