Digital Commons Network^™

Co-Composted Biochar Improves Dry-Farmed Tomato Productivity In The Santa Clara Valley, Ca, With No Change In Soil Microbiology, Duncan A. Keller

Master's Theses

California is a globally important site for agricultural production, but the state is currently suffering from an unprecedented drought. One strategy to conserve water is dry farming, where growers cache moisture in the soil from off-season rain or early-season irrigation for crops to use throughout the growing season. Some California growers have dry-farmed tomatoes for decades. Recently, some have begun adding co-composted biochar (COMBI) to boost productivity and stimulate soil microbiology, particularly arbuscular mycorrhizal fungi. To the best of my knowledge, no field research on dry-farmed tomato systems currently exists, let alone on the effects of COMBI amendments on yield, …

Evaluating Schizochytrium Sp. As An Alternative Ingredient In Fish-Free Feeds For Sablefish (Anoplopoma Fimbria) Aquaculture, Katherine A. Neylan

Master's Theses

Alternative feeds for marine finfish aquaculture are critical for the sustainable expansionof the aquaculture industry. Fish that are farmed for human consumption are often carnivorous; therefore, the industry uses wild-caught forage fish as a primary ingredient in feeds in the form of fishmeal and fish oil. As the aquaculture industry grows, it is important to identify alternative feed ingredients with high omega-3 polyunsaturated fatty acid (PUFA) concentrations. This study was designed to test a microalga, Schizochytrium sp., as an alternative feed ingredient for sablefish (Anoplopoma fimbria) using six test diets. The first diet (+FM+FO) contained both fishmeal and fish oil. …

Examining Communibiology During Adrenal Stress Scenario Training In Feminist Self-Defense: An Experimental Study, Daniel A. Van Hook

Master's Theses

In communication episodes featuring heightened stress, interactions that are perceived as threatening and evoke a sense of powerlessness often predict a cycle of victimization. Meanwhile, social interactions which affirm safety and agency amidst stress foster empowerment. This study utilized Hoplology, which studies stress inoculation against aggression and posttraumatic stress, and Communibiology, the study of neurobiology as an antecedent and outcome of communication, to explore (a) whether Adrenal Stress Scenario Training in Feminist Self-Defense (ASST-FSD) produces a physiological response to promote stress inoculation, (b) how anxiety impacts physiological response, and (c) reports of mental toughness. A 4-day ASST-FSD training pilot study …

An Analysis Of The Methods Of Interpretation Of The Leviticus 11 Dietary Laws In Second Temple And Early Christian Non-Canonical Sources, Ani Ionut Constantin

Master's Theses

Background of the Research

Numerous commentators and theologians have written in recent centuries about clean and unclean animals. These distinctions are also referred to as dietary laws, and they are found in Leviticus 11 and Deuteronomy 14. For example, Walter Houston wrote in 1993 in the Journal for the Study of the Old Testament, Supplement Series 140 about the prohibition, its explanation, and its implications; Vic Lockman extended the study through the New Testament in 1997 in his work The Dietary Laws of the Bible; and Jordan D. Rosenblum in 2016 in his work The Jewish Dietary Laws in the …

Factors That Influence The Believers In Monze Central Seventh-Day Adventist Church Of South Zambia Conference To Consult Diviners, Ian Chiinya

Master's Theses

Problem

Studies have shown that even after becoming Christians, African Christians maintain their traditional religious practices. Non-Christian studies in Zambia reveal that both Christian and non-Christian Zambians still combine biomedicine with sacred African traditional medicine. The goal of the current study is to identify the variables that lead Monze Central Church Seventh-day Adventist members to consult diviners.

Method

Sections one and two of a questionnaire were created to collect information on the variables that affect going to a diviner. To assess the role and self-efficacy of local church elders in assisting members who have been impacted by demonic spiritual forces, …

Three Miles Per Hour: Shifting From Performance To Heart Orientation Among Seventh-Day Adventist Pastors, Royce A. V. Odiyar

Master's Theses

This thesis examines the presence and impact of performance orientation among Seventh-day Adventist pastors. It identifies multiple factors involved in perpetuating performance orientation and includes strategies to shift from performance to heart orientation in life and pastoral ministry. Using a mixed-method design, this research collected qualitative data via focus groups and quantitative data via an online survey. There was a total of eight focus groups with thirty-three participants, and the online survey gathered fifty-one responses. Focus group participants and survey respondents included both men and women from North America who were ethnically diverse. The research revealed significant concerns regarding pastoral …

Acculturative Stress Trajectories And Mental Health Among Mexican Immigrant Families, Susana Sarai Sosa

Master's Theses

The United States is one of the leading countries with high immigration rates, with Mexican immigrants making up about 25% of all immigrants living in the United States (Budiman et al., 2020). The current study examined the divergent trajectories of acculturative stress, years in the U.S., and parent internalizing symptoms among Mexican-origin immigrant parents. Participants in this study are from a larger study on family coping among Mexican-origin immigrant families. A total of 104 families participated at T1, 99 at T2 (6 months after T1), and 97 at T3 (12 months after T1). Finally, in 2017, a reduced sample of …

An Analysis Of Thermal Comfort Perception In Cal Poly's Math & Science Building, Pouria Ali Fariborzi

Master's Theses

Since Americans, on average, spend approximately 90% of their time indoors according to the EPA, it is crucial to provide room occupants with the best, most comfortable, and healthiest possible environment, which is known as Indoor Environmental Quality (IEQ). This thesis aims to identify how we can provide comfortable learning environments to improve student success. To determine the best possible environment for occupants, a model of the Math & Science Building was developed, validated, and modified using DesignBuilder. In addition, we compared thermal comfort surveys to actual measured conditions for some classrooms. Analysis indicates that students prefer a cooler thermal …

Research Handling Effects On Stress Hormones, Blood Parameters, And Heart Rate In Juvenile Northern Elephant Seals (Mirounga Angustirostris), Lauren A. Cooley

Master's Theses

Wildlife researchers must balance the need to safely capture and handle their study animals to sample tissues, collect morphological measurements, and attach dataloggers while simultaneously ensuring their results are not confounded by stress artifacts caused by handling. To determine the physiological effects of research activities including chemical immobilization, transport, instrumentation with biologgers, and overnight holding on a model marine mammal species, I collected hormone, blood chemistry, hematology, and heart rate data from 19 juvenile northern elephant seals (Mirounga angustirostris) throughout a translocation experiment. Across my six sampling timepoints, cortisol and aldosterone data revealed a moderate hormonal stress response to handling …

Abolition Is Not Abstract: Zines And The Transmission Of Revolutionary Cultural Capital, Austin Wonder

Master's Theses

Abolition as a theory and practice-whether in relation to the institution of the prison, systems of policing, or the carceral state as a whole-has received relatively little attention or serious appreciation within the discipline of Sociology. Calls for the abolition of policing and prisons are often taken for granted as naïve and radical demands, perceived as being disassociated from the material conditions of reality. Nonetheless, abolitionist analyses provide a unique and critical perspective from which to explore alternatives to addressing pervasive police violence and mass incarceration through strategies which do not rely upon, or increase the power of, the criminal …

The Role Of Ly49 Receptors In Maintaining Healthy Murine Pregnancy, Michelle Belmont

Master's Theses

Natural Killer (NK) cells are abundant in pregnancy and contribute to the health of the fetus. Uterine NK (uNK) cells provide less cytotoxic function than their conventional NK (cNK) cell counterparts. Various combinations of Killer Immunoglobulin Receptor (KIR)- Human Leukocyte Antigen (HLA) on maternal NK and fetally derived cells, respectively, can have different effects on the health of pregnancy in humans. Murine NK cells contain Ly49 receptors, an equivalent to KIRs. Therefore, Ly49 receptor interactions with fetally-derived MHC-I molecules can be a valuable model for studying the role of NK cells in pregnancy. The process of spiral artery remodeling can …

Growth Of Condition-Related Knowledge Among Youth With Spina Bifida: Associations With Neurocognitive Functioning And Self-Management Skills, Olivia Emery Clark

Master's Theses

Spina bifida (SB) is a congenital birth defect that may involve physical, medical, and neuropsychological complications due to central nervous system malformation (Copp et al., 2015). Ambulation problems, bladder and bowel dysfunction, and hydrocephalus require daily medical management tasks, including catheterization, bowel program management, and skin checks to avoid secondary complications. While self-management skills are typically gained during adolescence, executive dysfunction in SB may complicate gains (Dennis et al., 2006; Greenley, 2010). Indeed, evidence in other chronic conditions suggests that adolescent executive dysfunction is linked to poorer medical self-management. Condition-related knowledge has been identified as an important basis of medical …

A Study In The Effectivenss Of Factual Versus Emotional Interventions In Reducing Ambivalent Sexism In Hiring Decisions, Molly Jane Driscoll

Master's Theses

Ambivalent sexism – divided into the categories of benevolent sexism (BS) and hostile sexism (HS) – is imbedded in many parts of the workplace. This study aims to explore if ambivalent sexism influences hiring decisions and, if so, what can be done about it. After completing a series of surveys, participants were asked to read about an agentic female candidate who applied for a male-dominated position. Afterwards, participants went through either a factual or emotional intervention before reevaluating their decision. Major results showed that only the emotional intervention increased the likelihood of the candidate being hired but it is not …

Phenotypic Analysis Of Murine Gut Associated Lymphocytes, Madison Flood

Master's Theses

γδ T cells are important in the role of immune homeostasis, especially in relation to the gut. It has been shown that there is a higher proportion of γδ T cells in the intestines than in circulation. With this knowledge, our lab focused on understanding the mechanisms of these cells, specifically regarding immune tolerance. In our preliminary research, we identified a subset of γδ T cells that express Foxp3, a transcription factor essential for the functioning of regulatory T cells, in the neonatal (5 day old) intestine. We hypothesized that these Foxp3+ γδ T cells have immunosuppressive functions upon exposure …

Examining The Bidirectional Relations Between Psychological Functioning And Academic Outcomes Among College Students, Maya Hareli

Master's Theses

Emerging adulthood is a developmental period associated with a variety of transitions and changes, including rising rates of mental health concerns (Arnett, 2004, 2006; Center for Collegiate Mental Health, 2020). The literature has established that both psychological and academic functioning are critical components of students’ lives, as mental health has been shown to interfere with students’ grades, graduation rates, and postgraduate employment (Hartley, 2010; Mojtabai et al., 2015), while poor achievement is associated with mental health challenges in college and beyond (Bruffaerts et al., 2018; Respondek et al., 2017). Additionally, women and men have been shown to experience these areas …

Bisacodyl Limits Chikungunya Virus In Vitro And Is Broadly Antiviral, Natalie June Lomascolo

Master's Theses

Identifying novel antivirals requires significant time and resource investment, and the continuous threat of viruses to human health necessitates commitment to antiviral identification and development. Developing antivirals requires years of research and validation, and recent outbreaks have highlighted the need for preparedness in counteracting pandemics. One way to facilitate development is to repurpose molecules already used clinically. By screening such compounds, we can accelerate antiviral development. Here, we screened compounds from the National Institutes of Health’s Developmental Therapeutic Program for activity against chikungunya virus, an alphavirus that is responsible for a significant outbreak in the Americas in 2013. Using this …

Influences Of Latino Caregivers’ Input And Acculturation On Children’S Bilingual Development: A Speech Sample Analysis, Jordan Sierra Perry

Master's Theses

Interactions with caregivers are important for children’s development. In particular, the language input that young dual language learners (DLLs) receive from their primary caregivers affects their cultural knowledge and their bilingual language outcomes. However, relatively little research has been conducted to investigate the cultural contexts that influence Latino caregivers’ bilingual language use at home, including their acculturation level. Thus, the present study examined the relation between caregivers’ acculturation and their children’s bilingual (Spanish and English) language use, and whether this relation varied as a function of caregivers’ bilingual language use. Parent-report measures of bilingual language use, in addition to video …

Investigating The Role Of Nagc Reveals It To Be A Global Regulator, Natasha Peterson

Master's Theses

Bacterial colonization of host surfaces can result in symbiotic or pathogenic associations.As bacteria becomes more resistant to antibiotics, pathogenic bacterial colonization poses an increasing risk to human health. Symbiotic associations that have beneficial outcomes for both the host and the microbe can serve as models to investigate how bacterial processes affect colonization of host surfaces. The symbiotic relationship between the Gram-negative, bioluminescent bacterium Vibrio fischeri and the Hawaiian bobtail squid is one such model (E. V. Stabb & Visick, 2013). The study of this exclusive relationship has developed in a way where in vitro phenotypes can predict the ability of …

Positive Affect Facilitates Reduction In Depression Symptoms During A Mobile Mindfulness-Based Intervention, Andrew Rauch

Master's Theses

Depression negatively impacts the lives of many, and the rates are continuing to rapidly increase. Identifying patterns of modifiable affective psychological mechanisms that contribute to reducing depression symptoms is critical to improve the effectiveness of wellbeing interventions for individuals with depressive disorders. Depression has been characterized by valanced patterns of low positive affect and high negative affect, yet the extent to which these relative patterns of affectivity change in response to intervention remains less clear. The present study evaluated affective patterns in college students (n = 127) with elevated depression symptoms who participated in a randomized controlled trial (RCT) of …

The Role Of Identification In Black Individuals' Goals To Challenge Racism Through Confrontation And Collective Action, Efrata Sasahulih

Master's Theses

Anti-Black racism continues to harm Black individuals in the United States and throughout the world (e.g., police brutality, medical racism: Hoffman, Trawalter, Axt, & Oliver, 2016; Smiley & Fakunle, 2016; Stuber, Meyer, & Link, 2008). Psychological research has investigated the roots of prejudice and strategies to mitigate its negative consequences, including confrontation and collective action. However, research in this area has largely focused on ways that these strategies pose additional risk for targets of prejudice. This research determined if Black people who endorse individual-benefiting or group-benefiting goals following an instance of anti-Black racism use confrontation and collective action, respectively, to …

Delayed Testosterone Treatment In A Rodent Model Of Repeat Mild Traumatic Brain Injury Attenuates Mechanisms Of Cellular Death In The Vestibular Nucleus, Michael Volyanyuk

Master's Theses

A common complaint after repetitive mild traumatic brain injury (rmTBI) is vestibular dysfunction, which can become persistent and decrease quality of life. Delayed testosterone treatment has been shown to reduce vestibular impairment and improve neuronal survival in the vestibular nucleus following rmTBI; however, the long-term molecular pathways associated with rmTBI and testosterone treatment remain widely unexplored. We utilized a 5-hit closed-head rodent rmTBI model and administered testosterone 35 days after injury (DPI). The vestibular nuclei were removed and prepared for RT-qPCR and western blotting. Gene expression and protein levels were elevated for markers of oxidative stress (NADPH oxidase 4) and …

Calcium-Mediated Induction Of Vibrio Fischeri Es114 Biofilms, Katia Elizabeth Semenchuk

Master's Theses

Vibrio fischeri bacteria form biofilms that facilitate symbiotic colonization of the Hawaiian bobtail squid, Euprymna scolopes. These host-associated biofilms require production of the SYP polysaccharide. However, it has been difficult to observe robust biofilm formation in vitro in a laboratory setting using wild-type strain ES114; instead, most work investigating syp-dependent biofilm formation has relied on genetically altered strains. Guided by recent findings that increasing calcium induces c-di-GMP (Tischler et al., 2021), a molecule known in other systems to promote biofilm formation, the question was posed as to whether high levels of calcium alone could promote syp-dependent biofilm formation by ES114. …

Biofilms On Plastic Litter: Community Composition And Activity And The Effects On Ecosystem Processes, Raul F. Lazcano

Master's Theses

The rapid increase of plastic production and disposal has resulted in plastic pollution becoming a global problem. In aquatic ecosystems, plastic litter is a substrate for biofilms, but little research has simultaneously assessed the effects of plastic litter on biofilm activity, community composition, and ecosystem processes. Our objectives were to: (1) measure biofilm activity and community composition on plastic litter relative to a natural surface in an urban river and (2) assess the impact of microplastic pollution on ecosystem metabolism and N2 flux in an oligotrophic lake. For objective (1) we incubated three common plastics with distinct physical and chemical …

The World Health Organization, The Trump Administration, American Public Opinion, And China: A Principal-Agent Problem, Megan Patrice Larson

Master's Theses

Why did the United States perceive the World Health Organization as ineffective during the COVID-19 pandemic? To answer this question, this research delves into current principal-agent model literature to reproduce mechanisms present by the WHO and the United States. Current research fails to explain the WHO's effectiveness. By borrowing from realist theory and political psychology and analyzing various declarations made by the United States, this analysis found preliminary evidence that the idea of WHO's ineffectiveness was primarily shaped by the Trump Administration and American public opinion. Moreover, because of the disinformation and misinformation spread by the Trump Administration, the WHO …

Dna Methylation Patterns Of Line-1 Elements Specific To Hc21p In Cancer Cells, Dametria Jetters

Master's Theses

Long Interspersed Nuclear Elements (LINEs) are retrotransposons. They function by making a cDNA copy, reverse-transcribing it into DNA and reinserting itself back into the genome; thereby, increasing its copy number. Sequencing of the human genome revealed that LINEs (L1) are underrepresented on the short arm of human chromosome 21 (HC21), but it is enriched in full-length copies. A number of previous studies have investigated the DNA methylation patterns of L1s in cancer cells, but these studies are typically done in euchromatic regions. The heterochromatic short arm of HC21 is primarily composed of heterochromatin. However these regions can be targeted for …

Unveiling Bacterial Hitchhikers In The Urobiome, Genevieve Baddoo

Master's Theses

Microbial communities of bacteria, viruses, and fungi form complex interactions in nature. However, our understanding of these communities is limited to those that can be cultured in the lab. Enhanced culture methods have enabled the isolation of numerous fastidious species from urinary tract, definitively proving that the urinary tract of asymptomatic individuals is not sterile. In working with these isolates, our group has observed several instances in which a “purified” isolate actually harbors more than one species. We refer to these additional members as bacterial hitchhikers, a term previously used to describe similar occurrences in soil communities. I hypothesized that …

Modeling The Impact Of Peer Mentorship To Support First-Year Student Well-Being, Sarah Broner

Master's Theses

The transition to college is characterized by instability in a variety of life domains, with some students experiencing sharp declines in well-being across the first year of college (Conley et al., 2014). Well-established in the literature is the link between this life transition and increased rates of mental illness, including depression, anxiety, stress, and relationship problems (Auerbach et al., 2018). The adjustment to higher education can be particularly difficult for underserved students (Carter et al., 2013; Kalsner & Pistole, 2003), who may not have access to the same types of knowledge, resources, and privileges as their White counterparts on campus. …

The Impact Of Perceived Discrimination And Stigma Consciousness On Connectedness, Trust, And Satisfaction In Healthcare Domains During The Covid-19 Pandemic, Devon Richardson

Master's Theses

This study will assess the relations between perceived experiences of discrimination within healthcare settings and connectedness, trust, and satisfaction with services in healthcare domains among African Americans. It will also examine if the Covid-19 pandemic has exacerbated this relationship. I predict that African Americans in the COVID-19 discrimination condition (versus the control condition) will report lower connectedness and trust with healthcare workers and lower satisfaction with healthcare services. I also predict that stigma consciousness will moderate this effect. For African Americans reporting lower levels of stigma consciousness, I expect there will be a negative relation between perceiving discrimination and connectedness, …

Psychological Symptoms, Visceral Pain Sensitivity, And Observations Of Parent Pain Behavior Are Related To Somatic Symptoms In Premenarchal Adolescents, Genevieve Roth

Master's Theses

Somatic symptoms are a risk factor for the development of chronic pelvic pain in women. The present study characterized somatic symptoms and their relations with psychological, pain sensitivity, and parental factors in a community sample of premenarchal adolescents, which marks an initial step in advancing the identification of potential modifiable factors related to menstrual pain and chronic pain development. Pain sensitivity (visceral and bodily factors) and psychological symptoms (anxiety and stress) were predicted to be related to somatic symptoms (e.g, widespread bodily discomfort) in premenarchal adolescents. Additionally, adolescents’ observation of parent pain behavior was expected to be specifically associated with …

Andrews University’S Thought Leadership Communication On Linkedin: A Textual Analysis, Nana Ama O. Akoto-Boateng

Master's Theses

Thought leadership is fast becoming a powerful communication tool for most industries and sectors including higher education institutions (HEIs). This study employed textual analysis to determine how Andrews University's thought leadership on LinkedIn compares with four other top-ranking Adventist universities, namely Loma Linda University, Pacific Union College, Southern Adventist University and Walla Walla University. The text elements that were analyzed during the study were image posts and video posts on the respective LinkedIn pages of these institutions, spanning from January 2021 to June 2021. Among other findings, the results of the study revealed that Andrews University compares as the least …