Life Sciences Commons^™

Raemap: Real-Time Advanced Eye Movements Analysis Pipeline, Gavindya Jayawardena

Computer Science Theses & Dissertations

Eye-tracking offers insights into human cognition and attention allocation by capturing and interpreting eye movements. Traditionally, eye tracking research has relied on offline analysis methods, requiring post-experiment processing to derive insights from gaze data. This approach limits its applicability in contexts requiring immediate feedback and adaptive responses based on real-time gaze behaviors. Recent advancements in computing power and eye tracking technology have enabled a shift towards real-time analysis, allowing modern systems to interpret gaze data with minimal latency, facilitating integration into interactive applications and experiments. Despite these advancements, existing tools often face challenges with real-time computation of advanced gaze measures …

Use Of Cobalt(Iii) And Copper(Ii) Complexes With Thiosemicarbazone Ligands And Berberine Chloride As Anti-Cancer Agents Against Triple Negative Breast Cancer, Duaa Rashad Alajroush

Chemistry & Biochemistry Theses & Dissertations

It is a worrying fact that chemotherapeutic options for treating triple negative breast cancer are limited in nature, including the use of inorganic pharmaceuticals such as cisplatin and its analogues. It has been reported that cisplatin has undesirable side effects when used as a chemotherapeutic drug. As such, there is a need to use non-platinum-containing complexes as chemotherapeutic agents. Based on that issue, it has been reported by our research group and others that cobalt- and copper-containing complexes have shown great potential in anti-cancer properties when compared to cisplatin. In this research project, the cytotoxic effects of the following complexes: …

Streaminghub - A Realtime Biosignal Processing Framework For Lab Scale Experimentation, Yasith Jayawardana

Computer Science Theses & Dissertations

In human subjects research, biosignals such as eye movements, heart rate, and brain activity, are often collected and analyzed to find patterns with tangible real-world implications. Modern advancements in technology have sparked interest towards analyzing biosignals in realtime. When developing such algorithms, one may expect to find free, open-source tools that provide easy access to live, recorded, and simulated data streams. Yet, biosignal interfaces are often vendor-specific, making cross-vendor biosignal streaming non-trivial. Likewise, reading biosignal datasets is also non-trivial, as their content may be arranged quite differently.

To combat this divide, we provide the scientific community with a realtime biosignal …

Salt: A Tribute To Ghana's Fishers, Vanessa F. Jaiteh

Green Humanities: A Journal of Ecological Thought in Literature, Philosophy & the Arts

This poem is a tribute to my fieldwork on fisher safety, labour abuses and human rights violations in Ghana’s fisheries.

Monarch Science Observer, Volume 18, College Of Sciences, Old Dominion University

College of Sciences Newsletter

Spring 2024, issue of Monarch Science Observer, ODU Colleges of Sciences Newsletter.

Introduction To The Special Centennial Issue, Woodward S. Bousquet, Christopher Osgood

Virginia Journal of Science

This special issue of the Virginia Journal of Science (VJS) is dedicated to the 2023 Centennial of the Virginia Academy of Science (VAS). It includes congratulations from Commonwealth leaders, a proclamation by the Virginia General Assembly Senate, Academy members’ personal reflections, several historical papers and summaries, and portions of the program for the May 25-26, 2023 Annual Meeting in Williamsburg on the William & Mary campus.

Reflections About The Academy And Its Centennial, Marco Aldi, Woodward S. Bousquet

Virginia Journal of Science

Brief reflective essays from members of the Virginia Academy of Science were solicited as part of the Academy's centennial commemoration in 2023. The essays received demonstrate the many and varied ways in which the Academy has fostered collegiality, encouraged research, supported science education, and shaped the course of science in Virginia during the organization's 100-year history.

The Virginia Academy Of Science: A Scholarly Forum Over Decades For Students Of A Plant Ecologist, Stewart Ware

Virginia Journal of Science

As a newcomer to Virginia in 1968, I learned that annual meetings of the Virginia Academy of Science (VAS) were regarded as an excellent place for students to have their first experience giving a talk about their research to fellow scientists, and a place for faculty to get to know other Virginia scientists in their fields. Over the next four decades William and Mary students (undergraduate and graduate) and I were presenters or co-authors of 42 talks or posters at VAS annual meetings, 29 of them based on studies of plant ecology across Virginia. Two were talks by colleagues with …

Some Notable Women Botanists In The Vas: Their Roles In Supporting The Development Of The Modern Flora Of Virginia, Marion B. Lobstein

Virginia Journal of Science

With the publishing of the 2012 Flora of Virginia by the Foundation of the Flora of Virginia Project, the dream of modern flora for Virginia was realized. This was a goal of the Virginia Flora Committee of the Virginia Academy of Science as well as other groups such as the Virginia Botanical Associates and the Virginia Native Plant Society. The Flora of Virginia and the 2017 Flora of Virginia App were realized with the work, support, and encouragement of many individuals and organizations. This paper focuses on the lives, contributions, and work of six women botanists in the Academy who …

Exploring Cation Exchange: Unveiling Its Significance In Biochar And Bioenergetics Applications, Gyanendra Kharel

Chemistry & Biochemistry Theses & Dissertations

Cation exchange, a cornerstone of soil chemistry and nutrient cycling, is a fundamental chemical process that occurs in soils, sediments, membranes, and other solid materials. It involves the interchange of positively charged ions, or cations, between a solid matrix and a surrounding solution. This process is crucial in various natural and engineered systems, leading to a range of applications across different fields.

This dissertation presents an extensive investigation into the applications of cation exchange in the fields of biochar and bioenergetics, encompassing three distinct aims. The first aim concentrates on the surface oxygenation of biochar through ozonization, aiming to achieve …

Reliability Of Popliteal Artery Flow-Mediated Dilation In The Seated Position, Taskina Akhter

Rehabilitation Sciences Theses & Dissertations

Flow-mediated dilation (FMD) is a noninvasive measurement of endothelial function, which is a useful prognostic tool for cardiovascular disease risk. Despite its widespread use since 1992, the reproducibility of FMD varies widely between studies. This variability in reproducibility is especially significant in the case of the popliteal artery due to different methodological approaches. Studies perform popliteal FMD in various body positions, with the prone and seated positions most common. However, no studies have examined the reproducibility of both the seated and prone positions of the popliteal artery FMD. Therefore, the aim of this study is to examine the test-retest and …

Effect Of Lunar Magnetic Field And Lunar Regolith Simulant On The Growth And Bioactive Compounds Production Of Chlorella Vulgaris Microalgae, Jeries Philip Butros Abedrabbo

Mechanical & Aerospace Engineering Theses & Dissertations

Since humans last went to the moon on the Apollo missions, there has been a fascination with inhabiting and colonizing other planetary objects, starting with the Earth’s Moon, Mars, and recently Jupiter’s moon, Europa. However, there is still lack of knowledge and science behind many of the extraterrestrial environmental effects on biological organisms living on Earth. Therefore, there is a need to study how such environments would affect these organisms. Moreover, how can we attain sustainable living in such environments as well through self-providing life support systems (LSS), without the need to provide for additional necessities back and forth from …

Maneuverability Of Cuttlefish And Squid: An Integrated Kinematic And Hydrodynamic Analysis, Alissa Marie Ganley

Biological Sciences Theses & Dissertations

Turning is important for life underwater, playing roles in predator avoidance, prey capture, locomotion, and communication. While turning abilities have been explored in many taxa, little is known about maneuverability of cephalopods, such as cuttlefishes and squids. The objectives of this dissertation include: (1) quantifying the turning abilities of cuttlefish hatchlings and determining whether there are species-specific differences; (2) examining the turning capabilities of adult cuttlefishes, with the goal of comparing adult performance with that of conspecific hatchlings; and (3) quantifying how adult neritic squids perform turns to provide a broader context of maneuvering strategies in cephalopods. To investigate turning, …

Pulsed Electric Fields Sensitize Methicillin-Resistant Staphylococcus Aureus To Antibacterial Therapies And Stimulate Host Immune Responses, Alexandra E. Chittams-Miles

Biomedical Sciences Theses & Dissertations

This research explores the impact of nanosecond pulsed electric fields (nsPEF) on two fronts: their immune stimulatory effects and their potential as a novel strategy to enhance the sensitivity of Methicillin-resistant Staphylococcus aureus (MRSA) to clinically relevant antibiotics. While pulsed electric fields have been reported to have an immune stimulatory effect, the mechanisms responsible for these effects have yet to be determined.

Our investigation addresses the rising concern of MRSA derived skin and soft tissue infections (SSTIs). Consistent with other publications, we found that nsPEF alone cause modest inactivation of planktonic MRSA. We then investigated the effects of nsPEF in …

Time Series Models For Predicting Application Gpu Utilization And Power Draw Based On Trace Data, Dorothy Xiaoshuang Parry

Electrical & Computer Engineering Theses & Dissertations

This work explores collecting performance metrics and leveraging various statistical and machine learning time series predictive models on a memory-intensive application, Inception v3. Trace data collected using nvidia-smi measured GPU utilization and power draw for two runs of Inception3. Experimental results from the statistical and machine learning-based time series predictive algorithms showed that the predictions from statistical-based models were unable to capture the complex changes in the trace data. The Probabilistic TNN model provided the best results for the power draw trace, according to the test evaluation metrics. For the GPU utilization trace, the RNN models produced the most accurate …

Decreasing The Antibiotic Survival Of Multi-Drug Resistant Gram-Positive Organisms, Areej Malik

Biomedical Sciences Theses & Dissertations

Biofilm production plays a crucial role in bacterial antibiotic tolerance and novel approaches are needed to combat it. The stringent response (SR), activated by nucleotide alarmones (pp)pGpp, is crucial for bacterial transcriptional reprogramming. In Clostridioides difficile, the SR is implicated in antibiotic survival, contributing to infection recurrence. Despite its known roles in sporulation and biofilm production in other bacterial species, the broader influence of the SR on C. difficile physiology remains undiscovered. This study deletes the C. difficile SR gene relQ, revealing the pivotal role of RelQ in regulating SR-dependent phenotypes in this organism. The absence of RelQ …

Effects Of Balance Training On Spinal Reflexive Excitability Modulation, Corticospinal Excitability, And Balance Performance In Individuals With Chronic Ankle Instability, Sunghoon Chung

Rehabilitation Sciences Theses & Dissertations

Chronic ankle instability (CAI) is a neurophysiologic deficit resulting in diverse sensorimotor impairments. Following acute ankle sprains, pain, mechanical instability, and joint deafferentation reduce sensory input to the central nervous system (CNS). In response, the CNS sends altered motor signals to lower extremity muscles. These CNS changes contribute to various neuromuscular impairments in CAI patients, the most common of which is reduced balance performance. Specifically, CAI patients struggle to modulate spinal reflex excitability of the soleus muscle when progressing from simpler to more complex balance tasks. This overreliance on spinal reflexes results in inconsistent activation of the ankle stabilizing muscle. …

The Volleyball Attack: Training, Kinematics, And The Role Of The Torso, Kiara Baeleah Barrett

Human Movement Studies & Special Education Theses & Dissertations

Volleyball is an explosive, dynamic sport popular around the globe. The volleyball attack is the predominant point-scoring avenue and the point of interest for many coaches and players. As this motion is repeated many times throughout the course of a match, it is linked to overuse injuries at the shoulder. The purpose of this dissertation is to investigate methodological approaches for research in this movement as well as establishing mechanisms for improving performance and the health of the volleyball players’ shoulder.

For the first study, a systematic review of published literature was performed to ascertain training protocols beneficial to volleyball …

Time Series Modeling To Ascertain Age In Fisheries Management, Kathleen Sue Kirch

OES Theses and Dissertations

The ability to assign accurate ages of fish is important to fisheries management. Accurate ageing allows for the most reliable age-based models to be used to support sustainability and maximize economic benefit. Structures used to age include bones, scales, and most commonly ear bones (otoliths). Assigning age relies on validating putative annual marks by evaluating accretional material laid down in patterns in fish otoliths, typically by marginal increment analysis. These patterns often take the shape of a sawtooth wave with an abrupt drop in accretion yearly to form an annual band and are typically validated qualitatively. Researchers have shown keen …

A Comparison Of In Vitro Studies Between Cobalt(Iii) And Copper(Ii) Complexes With Thiosemicarbazone Ligands To Treat Triple Negative Breast Cancer, Duaa R. Alajroush, Chloe B. Smith, Brittney F. Anderson, Ifeoluwa T. Oyeyemi, Stephen J. Beebe, Alvin A. Holder

Undergraduate Research Symposium

Triple negative breast cancer (TNBC) is one of the most aggressive forms of breast cancer, and disproportionately affects African American women. TNBC cells lack the common hormone receptors that many pre-existing cancer treatments target. Fortunately, metal-based complexes with thiosemicarbazone ligands have gained significant attention for their potential as anti-cancer agents. Cobalt(III) complex ([Co(phen)2(MeATSC)](NO3)3•1.5H2O•C2H5OH]) and Copper(II) complex ([Cu(acetylethTSC)Cl]Cl•0.25C2H5OH) specifically have properties of high toxicity, which can contribute to decreased cancer cell activity. The effects of these complexes are currently being investigated on cancerous and non-cancerous breast cell lines. The cytotoxic effect of the cobalt(lll) complex and the copper(ll) complex was analyzed …

Efficacy Of Cloves As A Repellent For Pest Ants (Formicidae), Aadee Malavade

2024 REYES Proceedings

I examined the efficacy of cloves for repellent activity against foraging ants. Control baits consisting of a cracker/paper substrate topped with granulated sugar or chapati (Indian bread) were presented next to treatment baits (cracker/paper, granulated sugar and spice spread over the sugar) to ants in natural habitats. After an hour, the numbers of ants recruiting to the control and treatment baits were recorded. A timed study of ants with 30-minute duration was done to understand behavior of ants over time. Data were analyzed with the sign test. Cloves showed promise as ant repellents.

Ants And Their Response To Chili Powder, Antu Biswas

2024 REYES Proceedings

Spices can be used as an eco-friendly ant repellent. In this study, I tried to observe the ants’ response to chili powder and whether or not the spice can be an effective ant repellent.

The Efficacy Of Dry Peppermint Leaves As An Ant Repellent, Amal Chacko

2024 REYES Proceedings

Ant (Formicidae) infestation is a typical residential disturbance, often necessitating the use of chemical repellents that pose environmental and health dangers. This study looks into the possibilities of a natural alternative, dry peppermint (Mentha piperita L) leaves as a chemical repellent. Given the diversity of ant species and their variable responses to stimuli, this study seeks to determine the efficiency of dried peppermint leaves as a general ant repellent. A pilot study will be carried out to determine the repellent qualities of this spice against a specific ant species. The precise aims include evaluating if dry peppermint leaves …

Ants And Spices: Investigating The Repellent Effects Of Household Spices On Ants: A Study Of Chili, Coriander, And Cumin Powders, Abhishikta Pradhan

2024 REYES Proceedings

The aim of this study was to test the ant-repellent potential of household spices, namely chili powder, coriander powder, and cumin powder, against ants (Formicidae). The experiments were conducted using sticky note paper as a substrate, on which granulated sugar was placed as bait. In the control baits, only granulated sugar was used, while in the treatment baits, granulated sugar mixed with each spice was used. The baits were placed near ant nests. One hour after placing the baits, the number of ants on the control and treatment baits was counted for each control-treatment pair (five pairs in total, with …

Cardamom Spice: A Potential Ant Repellent, Deepanshi Gupta

2024 REYES Proceedings

This novel research has been conducted to identify the efficacy of cardamom powder to repel ants (Formicidae) in the households and analyze the ant behavior towards the spice. The study was done using a bait and a substrate along with a spice. Granulated sugar was used as a bait material with butter crackers as a substrate. The granulated sugar was topped over the substrate in the control sample while the cardamom powder was added on top of the sugar in the treatment sample. The control sample (no cardamom powder) and treatment sample (with cardamom powder) were kept at a distance …

Evaluating The Repellent Properties Of Paprika On Ants, Jonathan J. Toj Castellanos

2024 REYES Proceedings

Ants are a problem no matter where you are, which is why we should always have a way to repel them on hand. Spices can be an eco-friendly and cheaper alternative to common insecticides sold in supermarkets. These insecticides are generally made from toxic products, which can affect both humans and animals. This research aimed to find the perfect spice to replace insecticides. Paprika was chosen because it is very common, especially in Guatemalan territory. Several experiments were conducted to verify the effects of paprika on ants. It was tested on one of the most common ant species in Central …

Investigating Turmeric’S Sustainable Properties For Pest Control As An Ant Repellent, Sabyasachi Parija

2024 REYES Proceedings

Spices have long been known to possess various properties, including their ability to deter pests. This study investigates the potential of turmeric (Curcuma longa) as a natural ant-repellent. By testing the spice in various controlled environments, this research aimed to identify its efficacy compared to untreated baits. The results reveal that turmeric is a promising alternative to chemical pesticides, with significant effects in repelling ants without harm to the ecosystem.

The Ant-Repellant Activity Of Ginger (Zingiber Officinale) And Cardamom (Elettaria Cardamomum), Nevil S

2024 REYES Proceedings

Ants, while beneficial in natural ecosystems, can become pests when they invade human habitats. This study explored the potential of common household spices as a non-toxic alternative to chemical pesticides for ant repellency. Experiments were conducted using powdered ginger and crushed cardamom, which were applied to sugar biscuits (bait) in two ways: sprinkled on top and arranged in a circle around the bait. Ant activity was monitored over time, and data was analyzed using the Sign Test. The results indicated that both ginger and cardamom significantly repelled ants, demonstrating their effectiveness as natural ant deterrents. These findings suggest that spices …

White Pepper Powder Repels Ants, Mobashar Ahmad

2024 REYES Proceedings

In this study, I investigated ant responses to white pepper to see whether the spice can repel foraging ants. I performed several bioassays by placing control and treatment baits. The results demonstrated that white pepper powder significantly reduces ant activity.

Investigations Into The Ant Deterrent Properties Of Asafoetida Ferula Asafoetida And Star Anise Illicium Verum, Chinmayaram K

2024 REYES Proceedings

This study assesses asafoetida and star anise as eco-friendly alternatives to chemical ant deterrents. It involved placing replicates of two bait types, a control (granulated sugar) and a treatment (granulated sugar and spice), on yellow paper substrates at five different ant-infested sites. The efficacy of the spice was evaluated by comparing the ant count on each bait every 10, 40, 60, 120, and 180 minutes. Percentage repellency (PR) was calculated for both the spices, and the data was analysed with the sign test. Further tests used only the treatment bait to evaluate the efficacy of the two varieties of asafoetida …