Welcome to Allegheny College’s DSpace repository. Our institutional repository is rich with Allegheny history and important documents, including
- The Documents of Ida M. Tarbell, a digitized collection of papers from the groundbreaking journalist, author, and lecturer
- Civil War letters of Pvt. Willard A. Cutter and Stephen R. Clark
- The Campus student newspaper and The Kaldron student yearbooks.
- Senior Projects (currently available to Allegheny community only)
- Course Syllabi (currently available to Allegheny community only)
Portions of this repository are restricted to current Allegheny students, faculty, and staff. To ensure that you are seeing everything you have access to, please Log In with your Allegheny Username and Password.
Recent Submissions
Item 20240801 Minutes: Administrative Advisory Committee(2024-08-01)Item Food Security and Health Outcomes following Gray Divorce(MDPI, 2024-02-24)The study evaluates the immediate and long-term consequences of gray divorce (i.e., marital dissolution after age 50) for the food security, depression, and disability of older Americans. Staggered Difference-in-Difference models were fitted to a nationally representative longitudinal sample of adults aged ≥ 50 years from the Health and Retirement Study, 1998–2018. Food insecurity and disability increase in the year of gray divorce and remain significantly elevated for up to six years or more following the event, consistent with the chronic strain model of gray divorce. Gray divorce has particularly adverse consequences for the food security of older women, while no gender differences were observed for disability. Increasing trends in gray divorce have important negative implications for food security and health of older Americans, particularly women, who appear to be less prepared to financially withstand a marital collapse in older age. Targeted policies to provide nutrition assistance and support in reemployment might be necessary to reduce the burden of food insecurity in the wake of gray divorce among women.Item Transmission of viable Haemophilus ducreyi by Musca domestica(Public Library of Science, 2024-05-30)Haemophilus ducreyi was historically known as the causative agent of chancroid, a sexually-transmitted disease causing painful genital ulcers endemic in many low/middle-income nations. In recent years the species has been implicated as the causative agent of nongenital cutaneous ulcers affecting children of the South Pacific Islands and West African countries. Much is still unknown about the mechanism of H. ducreyi transmission in these areas, and recent studies have identified local insect species, namely flies, as potential transmission vectors. H. ducreyi DNA has been detected on the surface and in homogenates of fly species sampled from Lihir Island, Papua New Guinea. The current study develops a model system using Musca domestica, the common house fly, as a model organism to demonstrate proof of concept that flies are a potential vector for the transmission of viable H. ducreyi. Utilizing a green fluorescent protein (GFP)-tagged strain of H. ducreyi and three separate exposure methods, we detected the transmission of viable H. ducreyi by 86.11% ± 22.53% of flies sampled. Additionally, the duration of H. ducreyi viability was found to be directly related to the bacterial concentration, and transmission of H. ducreyi was largely undetectable within one hour of initial exposure. Push testing, Gram staining, and PCR were used to confirm the identity and presence of GFP colonies as H. ducreyi. This study confirms that flies are capable of mechanically transmitting viable H. ducreyi, illuminating the importance of investigating insects as vectors of cutaneous ulcerative diseases.Item Amplifying Community Partner Voices in Rural Community Service-Learning Partnerships(University of Georgia, 2024-03-01)This mixed-methods study delves into rural community service-learning (CSL) partnerships, shedding light on the complexities and dynamics of collaboration between colleges and rural communities. Through quantitative surveys and qualitative interviews, the research amplifies the voices of rural community partners, emphasizing the crucial role of trust, communication, and reciprocity. Challenges such as staff demands and organizational mismatches underscore the need for rural institutions to better prepare students and allocate resources to support their community partners effectively. The study advocates for transformative CSL approaches that prioritize community needs and nurture long-lasting collaborations. By providing insights into the impact of CSL on rural partners and organizations, this research offers valuable recommendations for improving future practices and fostering meaningful engagement in both rural and urban settings.Item Solubility considerations in relative block crystallization and morphology of PEO-b-PCL films(Wiley, 2020-02-17)Poly(ethylene oxide)-block-poly(epsilon-caprolactone) (PEO-b-PCL) is a heavily investigated amphiphilic crystalline-crystalline diblock copolymer. Its macroscopic physical properties are influenced by the crystallization behavior, which is robust due to similar crystallization temperatures of PEO and PCL. As such, tailoring the crystallinity and crystalline morphology should be advantageous to achieving desired changes in film properties. One method to manipulate the crystallization, analyzed here, is the selective solvation of one block during solvent casting. By careful solvent selection, the crystallization of PEO and PCL during solvent evaporation led to changes in relative crystallinity and film morphology. The effect of environmental humidity on the crystallization mechanism and relative block crystallization was explored in detail using Fourier-transform infrared spectroscopy.
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