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Molly Wardius, Senior Art Exhibition Portfolio
Get PDFThis is work created by Molly Wardius for the Senior Art Exhibition Portfolio 2024. The work includes graphic design, photography, and collage.https://digitalcommons.snc.edu/artportfolios/1088/thumbnail.jp
In a Fall of Torrent Hair: The Image of Woman and the View of Life in George MacDonald\u27s Works
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Characterizing the role of the Burkholderia cepacia Type Six Secretion System in interbacterial competition
No full textBurkholderia cepacia is a gram-negative bacterium that causes onion soft rot and can also act as an opportunistic pathogen, especially in patients who suffer from cystic fibrosis (CF). B. cepacia has been known to outcompete Pseudomonas spp. that cause common infections in CF patients. The Type VI secretion system (T6SS) is one mechanism that bacteria can use for interbacterial competitions. The T6SS secretes toxins across the cell membrane and into the cytoplasm of a neighboring cell. One protein that is critical for T6SS function is VgrG, which forms the tip of the syringe-like structure. We recently identified a B. cepacia strain with a mutated vgrG and have started to characterize the use of this gene. Preliminary interbacterial competition assays between a wild type B. cepacia and a vgrG mutant have shown that the mutant is a less effective competitor, and will be out competed by the wild type. These competition assays were tested at room temperature, 30°C, and 37°C (body temperature in humans). Competitions at 37°C showed the greatest difference in competitive ability where the wild type out competes the vgrG mutant. This suggests that this vgrG and the T6SS genes associated with it are most active at 37˚C, are used for interbacterial competition in a simple in vitro model, and that this system may contribute to interbacterial competition in a human host. In the future, competitions between B. cepacia and a Pseudomonas species can be set up to observe the competitive dynamics between species that cause infections in humans.https://digitalcommons.snc.edu/collaborative_presentations/1097/thumbnail.jp
Analysis of Free Surface Shape and Toss Width with a Broad-Crested Weir
No full textA broad-crested weir is a structure that directs and regulates flow of fluids. The specific goal of this study is to measure the toss width, specifically the slope of the water as it’s tossed off of the end of the weir, at designated points on the flume as flow velocity changes. We designed our experiment to measure quantitative data using a manometer for discharge height as well as the velocity meter to measure the fluid velocity. These measurements are used to qualitatively characterize the free surface shape, recognize patterns, and compare overshoot. The toss width is the priority of our experiment, with the heights and widths of the cavitation, which is the formation of an air bubble within the flow, being measured. As the toss width is influenced heavily by upstream characteristics, we will compute the upstream Froude number, which is characterized by a ratio from inertia to gravity as dominating forces. We predict that the results will show that as fluid velocity increases, our free surface shape will become more chaotic on the outflow and that our toss width will change, specifically the air bubble formed from our weir will have a larger height and smaller width. Broad-crested weirs are commonly used in nature as a dam that regulates flow. They can be used recreationally by keeping fish populations in specific areas along a river, encouraging fishing. Studying these weirs inside of a controlled environment can give us insight into how they can be used effectively in nature.https://digitalcommons.snc.edu/collaborative_presentations/1115/thumbnail.jp
Monitoring Ecosystem Health of Kelly Creek, South Beloit, IL, USA, During Restoration
No full textWe implemented a short-term, two-year project to measure the water quality of an urban creek undergoing restoration. We hypothesized that restoring the creek would positively impact the health of the stream by improving the macroinvertebrate abundance, water column characteristics, nutrients, and chlorophyll a.The study contained three sites along Kelly Creek in South Beloit, IL. Site 1 and site 2 were within the restoration area of the creek. Here, efforts were made throughout the duration of the study to pick up trash, clean out muck, and plant riparian vegetation. Site 3 remained untreated. Data were collected in the summers of 2021 and 2022 approximately every two weeks. Macroinvertebrate abundance, temperature, dissolved oxygen, total phosphorus (TP), and chlorophyll a were collected during each sampling period. Macroinvertebrate richness and diversity, and the Hilsenhoff Biotic Index (HBI) were calculated.Preliminary results suggest that amphipod (Gammaridae), dragonfly (Anisoptera), and leech (Hirudinea) abundances differ significantly by site. Dragonflies have a higher abundance in site 2 than in sites 1 and 3. Dragonflies have a mid-range HBI index value indicating better water quality in site 2. Leeches have a higher abundance in site 3 than in sites 1 and 2. Leeches have a high HBI index value, which indicates that they can survive well in polluted waters. Amphipods have a lower abundance in site 2 than in sites 1 and 3, likely due to the lack of their preferred rocky substrate in site 2. The results of this study will help to promote further research and improvement of Kelly Creek, and gain insight into short-term impacts of ecological restoration in polluted urban areas. Share this:https://digitalcommons.snc.edu/collaborative_presentations/1111/thumbnail.jp
Jill Magid, Spring 2023, Art & Society Lecture Series
No full textAs a part of the St. Norbert College Art & Society lecture series, Jill Magid delivered a Zoom lecture and presentation on April 20, 2023. Jill Magid is an American conceptual artist, writer, and filmmaker. Jill’s performance-based practice interrogates power structures on an intimate level, exploring the emotional, philosophical, and legal tensions between institutions and individuals. This lecture was supported by the Norman Miller Center for Peace, Justice, and Public Understanding
Guest Recital: Michael Gurt Piano Recital (2023)
Get PDFSNC Music Department presents: the Michael Gurt Piano Recital (2023)