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2023

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Effect Of Soil Ph And Indigenous Bacterial Populations In Selecting Rhizobial Endophytes Within Soybean Root Nodules, Brianne Danielle Edwards Jan 2023

Effect Of Soil Ph And Indigenous Bacterial Populations In Selecting Rhizobial Endophytes Within Soybean Root Nodules, Brianne Danielle Edwards

Graduate Theses/Dissertations

Soybean plants fulfill most of their nitrogen requirement by developing symbiotic associations with four different rhizobial genera, including Bradyrhizobium, Sinorhizobium, Mesorhizobium, and genus Rhizobium. In general, members of Bradyrhizobium and Sinorhizobium have been reported as dominant root nodule endophytes under acidic soils and alkaline soil conditions, respectively. So far, it is unknown whether the selection of rhizobial endophytes is regulated by their ability to survive under different soil pH or driven by host plants regardless of their relative abundance in soil. This study was focused on the assessment of the potential role of soil pH in …


Supporting Lgbtqia2s+ College Students: Psychological Flexibility And Promoting Verbal Behavior Of Support And Inclusion, Breanna Ashtyn Lee Jan 2023

Supporting Lgbtqia2s+ College Students: Psychological Flexibility And Promoting Verbal Behavior Of Support And Inclusion, Breanna Ashtyn Lee

Graduate Theses/Dissertations

The current thesis includes two studies that account for aspects of LGBTQIA2S+ experiences. The first study explored verbal behavior involved in stereotyping. Relational Density Theory (RDT; Belisle & Dixon, 2020) offers a model for conceptualizing relational strength of environmental stimuli, such as those contributing to stereotypes based on sexuality. Participants in the present study completed a multidimensional scaling procedure using an RDT framework by rating the degree of relatedness between stimulus pairings. Stimuli included a series of sexualities (e.g., gay man), as well as adjectives (e.g., masculine). A brief Acceptance and Commitment Therapy (ACT; Hayes, 2004) based defusion exercise was …


Defect State Study And Surface Patching In Zno Nanoparticles Via Nano- Bio Interaction With Dna Bases, Ummay Honey Jan 2023

Defect State Study And Surface Patching In Zno Nanoparticles Via Nano- Bio Interaction With Dna Bases, Ummay Honey

Graduate Theses/Dissertations

First, this thesis investigates the structural and optical properties of hydrothermally synthesized ZnO nanostructures, focusing on the effects of varying annealing temperatures on their properties. Structural characterizations using micro-Raman spectroscopy, X-ray diffraction (XRD), and morphological study called scanning electronic microscopy (SEM) show changes in crystallinity and intensity with different annealing temperatures. Optoelectronic characterization using photoluminescence spectroscopy reveals changes in luminescence properties near the ultraviolet region with temperature variation and in the visible emission area region. These results provide insights into how annealing temperature can affect the surface layer of ZnO nanostructures and can be applied to improve performance in electronic …


How A Professional Describes Reasons For Working In And Ultimately Leaving The Foster Care Field In The State Of Missouri: A Case Study, Lauren Williams Jan 2023

How A Professional Describes Reasons For Working In And Ultimately Leaving The Foster Care Field In The State Of Missouri: A Case Study, Lauren Williams

Graduate Theses/Dissertations

The foster care field continues to have a high turnover rate of the professionals working in the field. While support and work balance are available for some professionals, many face the challenges of heavy workloads, unrealistic expectations, and health sacrifices that lead to many professionals leaving the field. This case study of one former foster care professional’s description of reasons they worked in the field, and reasons they ultimately left the field provides insight of the challenges and support as a foster care professional. The findings of this study are organized into three major themes including “Challenges for Foster Care …


Impact Of Sample Conditions On Dna Phosphodiester Backbone Bi/Bii Conformational Equilibrium Dynamics, Autumn C. Pilarski Jan 2023

Impact Of Sample Conditions On Dna Phosphodiester Backbone Bi/Bii Conformational Equilibrium Dynamics, Autumn C. Pilarski

Graduate Theses/Dissertations

DNA damage, such as single base lesions and mismatches, is highly prevalent within cells. If these DNA damage events are not repaired, they could lead to mutations and thus disease and cancer. Intricate repair mechanisms are in place to fix these damage events, one such being Base Excision Repair (BER) and associated enzyme: Thymine DNA Glycosylase (TDG). The first step of this repair process, recognition of the lesion by TDG, is not well understood. The following thesis presents results to better understand the fundamental biophysical question of how a DNA lesion within a mismatch context is recognized in a million …


From Assessment To Treatment: Evaluating The Life Skills Emergence System Functional Module, Shelby Blecha Jan 2023

From Assessment To Treatment: Evaluating The Life Skills Emergence System Functional Module, Shelby Blecha

Graduate Theses/Dissertations

The need for evidence based technologies supporting the development of behavioral repertoires essential for daily living is increasing, and while empirical research is valued among behavior analysts, limited psychometric research exists in behavior. Assessing and promoting daily living skills (DLS) requires empirical assessments and training technologies to enhance independence and autonomy, consistent with applied behavior analysis principles. The LIFE Skill Emergence System: Functional Module contains both a 250-item behavioral assessment evaluating DLS as well as a curriculum that integrates behavior analytic procedures such as chaining, task analyses, direct training, generalization, and relational framing to support DLS in behavior programming. The …


Synthesis, Characterization, And Application Of Chitosan Nanoparticles For In Vitro Studies On Hela Cancer Cells, Rejeena Jha Jan 2023

Synthesis, Characterization, And Application Of Chitosan Nanoparticles For In Vitro Studies On Hela Cancer Cells, Rejeena Jha

Graduate Theses/Dissertations

Chitosan is a fibrous substance that is derived from chitin, a natural substance in the shells of crustaceans. It possesses all the necessary qualities for being used as carrier for the transport of drugs and genes into tumor, such as biodegradability, biocompatibility, hydrophilicity, and non-toxicity and cationic in nature. Ionic gelation method was used to synthesize chitosan (CS) nanoparticles (NPs). Ionic gelation is a very benign process chemically that requires mixing a CS aqueous solution with a sodium tripolyphosphate (TPP) aqueous solution at room temperature. In addition, a surfactant polyethylene oxide (PEO) alone and a diblock copolymer of PEO and …


Toward A Behavior Analysis Of Discrimination And Prejudice: Racism, Sexism, And The Stigmatization Of Autism, Claire M. Zuch Jan 2023

Toward A Behavior Analysis Of Discrimination And Prejudice: Racism, Sexism, And The Stigmatization Of Autism, Claire M. Zuch

Graduate Theses/Dissertations

Behavior analysts are becoming increasingly aware of and involved in the study of issues related to sex, gender, disability, prejudice, and discrimination. This thesis integrates and discusses two collaborative manuscripts that revolve around the shared subject matter of multi-level research on systemic issues. In the first chapter, sexism and gender bias are conceptualized and informed by the framework of the nested sociobehavioral model of racism developed by Belisle et al. (2022), including implicit bias, selective gender norms, and systemic oppression, while integrating feminist and queer theories in the analysis. A model-dependent scoping review of research in major behavior analytic journals …


Investigation Of Inflammation And Apoptosis Mediated Toxicity In Response To Metal Oxide Nanoparticles In Ml-1 And Ca77 Cancer Cell Lines, Alyse N. Peters Jan 2023

Investigation Of Inflammation And Apoptosis Mediated Toxicity In Response To Metal Oxide Nanoparticles In Ml-1 And Ca77 Cancer Cell Lines, Alyse N. Peters

Graduate Theses/Dissertations

Metal oxide nanoparticles (MONPs) are becoming more popular in today’s environment. They contribute significantly to the technologies in agriculture and food development but there is little understanding to how MONPs, including ZnO, CuO, TiO2, and SnO2, impact human health and the environment. Our growth assay revealed that none of these negatively affects viability in the budding yeast, Saccharomyces cerevisiae. In contrast, both human thyroid cancer cells (ML-1) and rat medullary thyroid cancer cells (CA77) displayed a significant reduction in viability with the treatment of CuO and ZnO. The production of ROS in these cell lines when treated with CuO and …


Between Choice And Compulsion: An Examination And Critique Of The Evolution Of 'Original Sin', Matthew James Wynn Jan 2023

Between Choice And Compulsion: An Examination And Critique Of The Evolution Of 'Original Sin', Matthew James Wynn

Graduate Theses/Dissertations

“Why are we the way that we are?” is one of the hardest questions to answer because it requires grasping the origin of human beings. This has left philosophers and theologians in century-long debates on forming a “cosmogony of ontology” (i.e., how the origin of the universe informs the human condition). The concept, “original sin” was developed by a North African theologian named Augustine (354 – 430 CE). Augustine’s reading of Genesis 3, and inaccurate translation of Romans 5:12, taught that a person is born morally culpable for a fault antecedent to their existence. This way of thinking about the …


Renewable Fuels: Molecular Dynamics Investigations Into Pyrolysis Of Methyl Linoleate, Elson Osakpolor Eguaosa Jan 2023

Renewable Fuels: Molecular Dynamics Investigations Into Pyrolysis Of Methyl Linoleate, Elson Osakpolor Eguaosa

Graduate Theses/Dissertations

With the rapid depletion of the world’s supply of fossil fuels, especially petroleum products, petroleum prices have risen by approximately 800% between the 1970s and now and are projected to continue rising. It is also expected that the world’s consumption of energy will increase commensurate with its growing population. Although biodiesel is a good renewable alternative, it has its limitations including high production costs and poor low-temperature performance. We seek to improve conventional biodiesel with pyrolysis to produce low molecular-weight compounds with high energy densities. Understanding the pyrolysis path on the atomic scale is key as it will allow us …


Activity Patterns Of The Critically Endangered Central American River Turtle (Dermatemys Mawii), Cora Dyslin Jan 2023

Activity Patterns Of The Critically Endangered Central American River Turtle (Dermatemys Mawii), Cora Dyslin

Graduate Theses/Dissertations

The Central American River Turtle (Dermatemys mawii) is native to southern Mexico, eastern Guatemala, and Belize and is primarily restricted to watersheds that drain into the Gulf of Mexico and Caribbean Sea. Hunting, both for personal consumption and market meat, has been the primary driver of declines, and the species is now classified as critically endangered. Results from past studies that have used netting and visual surveys to detect D. mawii suggest that the species is chiefly nocturnal. However, it is unclear to what extent the perception of nocturnality has been biased by the timing of survey efforts …


The Rhetorical Use Of The Other: An Analysis Of Symbolic Disability In Contemporary Horror Films, Seth Hadley Jan 2023

The Rhetorical Use Of The Other: An Analysis Of Symbolic Disability In Contemporary Horror Films, Seth Hadley

Graduate Theses/Dissertations

In this research, I examine the concept of the Other in horror films. I use Kenneth Burke’s identification, Jean-Francois Lyotard’s metanarrative concept, and Lennard Davis’s bell curve of normalcy to describe the Other and how otherness relates to disability. First, I discuss how horror films have portrayed the Other historically in a negative context and slowly transition to the virtuous Other, the final girl. Next, I discuss the trend of portraying disability or otherness as an asset or tool in contemporary films like A Quiet Place, Birdbox, and Don’t Breathe. Then, I examine how current horror films explore the implications …


Closeness And Conflict In The Parent-Child Relationship And Parental Self-Efficacy During Childhood, Stephanie Boekweg Jan 2023

Closeness And Conflict In The Parent-Child Relationship And Parental Self-Efficacy During Childhood, Stephanie Boekweg

Graduate Theses/Dissertations

The present study examined the relationship between closeness in the parent-child relationship, conflict in the parent-child relationship, and parental self-efficacy during childhood. Quantitative data from an electronic survey on one hundred eighty-eight participants was collected. Results from a simple linear correlation indicated that parental self-efficacy during childhood and the parent-child relationship quality measures of closeness and conflict were moderately correlated. A simple regression showed that parental self-efficacy during childhood did not predict closeness nor conflict in the parent-child relationship when controlling for current parental self-efficacy. However, parental self-efficacy during childhood significantly predicted current-parental self-efficacy.


Callosal Malformations: Developmental Impacts And Parental Adjustment During The Covid-19 Pandemic, Kera Larson Jan 2023

Callosal Malformations: Developmental Impacts And Parental Adjustment During The Covid-19 Pandemic, Kera Larson

Doctor of Psychology (PsyD)

In March 2020 the 2019 coronavirus disease (COVID-19) was determined to be a global health crisis (Lee et al., 2021). As the virus continued to spread rapidly, individuals had to adjust their daily routines to reduce disease transmission. Agenesis of the Corpus Callosum (AgCC) is a broad term used when there is a presence of congenital brain malformation in the region of the brain responsible for transmitting information to both left and right hemispheres (Paul, 2011). Evaluation of individuals with AgCC have been observed to demonstrate specific deficits including cognitive efficiency, transfer of sensory-motor information, and complex reasoning (Brown & …


Relationship Of Resilience With Well-Being And Loneliness In Individuals With Severe And Persistent Mental Illness, Krysta Young Jan 2023

Relationship Of Resilience With Well-Being And Loneliness In Individuals With Severe And Persistent Mental Illness, Krysta Young

Doctor of Psychology (PsyD)

Resilience research has evolved from interest in understanding why some people thrive despite early adversities (Davino, 2013) to explain people’s adaptability when faced with challenge or adversity (Karaırmak & Figley, 2017). It has three components: adaptability, ability to succeed despite poor expectations, and persistent engagement instead of avoidance (Werner-Wilson et al., 2000), and is impacted by the severity of adversity, trait characteristics, and environmental characteristics (Chung, 2008). Resilience is a predictor of psychological well-being (Miranda & Cruz, 2022), is negatively correlated with loneliness (Tan et al., 2021), and while resilience is a protective factor against anxiety and depression (Cusack et …


Thwarted Belongingness And Burdensomeness As Moderators Between Entrapment And Suicide Ideation In College Students, Tupelo Witte Jan 2023

Thwarted Belongingness And Burdensomeness As Moderators Between Entrapment And Suicide Ideation In College Students, Tupelo Witte

Doctor of Psychology (PsyD)

College students are amid their search for identity development, desire to meet social expectations, and are juggling stressors that often lead to mental health concerns including suicidality. The integrated motivational-volitional model of suicidal behavior has established a three-phase framework to describe the process of suicidality. Life factors and feelings of defeat lead to entrapment and suicidal ideation followed by suicidal ideation and behaviors, as influenced or intervened by moderating factors. This study used data from the American College Health Association National College Health Assessment III to further investigate the integrated motivational-volitional model and specifically the motivational phase and relationship between …


The Impact Of Social Connection And Psychological Resilience On Covid-19 Pandemic- Related Mental Health Outcomes, Shelby Lee Powers Jan 2023

The Impact Of Social Connection And Psychological Resilience On Covid-19 Pandemic- Related Mental Health Outcomes, Shelby Lee Powers

Doctor of Psychology (PsyD)

The COVID-19 pandemic has had wide reaching, well-documented impacts on mental health across demographics. Among these impacts are higher rates of depression and anxiety in adults. Several factors have been shown to mitigate the experience of depression and anxiety, including social connection and psychological resilience. The present study examined social connection and psychological resilience as predictors of depression and anxiety on a U.S. adult sample (n = 535) during the COVID-19 pandemic. Participants were recruited using Qualtrics. Results of this study described that over 30% of the variance in anxiety and depression was predicted by a person’s levels of social …


Impact Of Having A Sibling With A Mental Disorder On Relationships, Sabrina C. Kluvers Jan 2023

Impact Of Having A Sibling With A Mental Disorder On Relationships, Sabrina C. Kluvers

Doctor of Psychology (PsyD)

When a family member has a mental disorder, such as schizophrenia, depression, or autism spectrum disorder, family dynamics and expectations often shift and change. This can influence how the siblings of these individuals, known as well siblings, interact with and experience their relationships with family members and peers. However, few studies have examined how well siblings perceive their relationships during the developmental period of emerging adulthood, which represents a time of increased differentiation and identity development. The present study explored the ways in which relationships with family and close friends differ between well siblings and their peers with typically developing …


Machine Learning Algorithms For Molecular Signature Identification With High-Throughput Genome Sequencing Data, Jiao Sun Jan 2023

Machine Learning Algorithms For Molecular Signature Identification With High-Throughput Genome Sequencing Data, Jiao Sun

Electronic Theses and Dissertations, 2020-2023

Powered by the high-throughput genomic technologies, the RNA sequencing (RNA-Seq) method is capable of measuring transcriptome-wide mRNA expressions and molecular activities in cells. Elucidation of gene expressions at the isoform resolution enables the detection of better molecular signatures for phenotype prediction, and the identified biomarkers may provide insights into the functional consequences of disease. This dissertation research focuses on developing advanced machine learning algorithms for mining large-scale RNA-Seq data in cancer transcriptome analysis. A platform-integrated model for transcript quantification (IntMTQ) is developed to improve the performance of RNA-Seq on isoform expression estimation. IntMTQ provides more precise RNA-Seq-based isoform quantification, and …


Dordt University 2023-24 Catalog, Dordt University. Registrar's Office Jan 2023

Dordt University 2023-24 Catalog, Dordt University. Registrar's Office

Academic Catalogs

Academic Catalog for 2023-24


Biomonitoring Of Exposure To Multiple Metal Components In Urine, Hair And Nails Of Apprentice Welders Performing Shielded Metal Arc Welding (Smaw), Jairo Buitrago-Cortes, Philippe Sarazin, Denis Dieme, Jonathan Côté, Capucine Ouellet, Naïma El Majidi, Michèle Bouchard Jan 2023

Biomonitoring Of Exposure To Multiple Metal Components In Urine, Hair And Nails Of Apprentice Welders Performing Shielded Metal Arc Welding (Smaw), Jairo Buitrago-Cortes, Philippe Sarazin, Denis Dieme, Jonathan Côté, Capucine Ouellet, Naïma El Majidi, Michèle Bouchard

Études primaires

Welding fumes are associated with various diseases. Increased air levels of metals were reported during welding. However, few multielement biomonitoring studies were conducted to assess the actual dose of metal components absorbed in apprentice welders in a learning environment. This research aimed to establish the nature and level of exposure to welding fumes and their metallic components in apprentice welders performing ‘Shielded Metal Arc Welding’ (SMAW), based on multi-element and multi-matrix analyses. A total of 86 apprentice welders were recruited in three different schools in Montreal, Québec, Canada. Twenty-one elements were measured in urine, hair, fingernail, and toenail samples collected …


Iere Annual Report 2023, Erin Largo-Wight, James Taylor, Kelly Rhoden, Ruby Cox, Nicole Lowe Jan 2023

Iere Annual Report 2023, Erin Largo-Wight, James Taylor, Kelly Rhoden, Ruby Cox, Nicole Lowe

Annual Reports

2023 Annual Report of the Institute for Environmental Research and Education


Location Of The Fibronectin Binding Domain On The Fibronectin Attachment Protein Of Mycobacterium Avium Subsp. Paratuberculosis, Chrissy Rose Hattery Jan 2023

Location Of The Fibronectin Binding Domain On The Fibronectin Attachment Protein Of Mycobacterium Avium Subsp. Paratuberculosis, Chrissy Rose Hattery

All Graduate Theses, Dissertations, and Other Capstone Projects

Mycobacterium avium paratuberculosis (MAP) is an acid-fast bacillus that causes a fatal granulomatous ileocolitis called Johne’s Disease that affects primarily ruminants. The impact of MAP infection in the US dairy industry is particularly severe, with up to 70.4% of the herds being infected and annual losses as high as $1.5 billion. MAP is capable of persisting for months in the livestock environment and surviving the pasteurization process. While several vaccines are available, none can prevent infection and treatment with antimycobacterial chemotherapy does not result in a cure. Management and control of MAP infection requires characterization of host-pathogen interaction at the …


Celebrity, Music, And Public Persona: A Case Study Of Taylor Swift, Elaina K.M. Junes Jan 2023

Celebrity, Music, And Public Persona: A Case Study Of Taylor Swift, Elaina K.M. Junes

All Graduate Theses, Dissertations, and Other Capstone Projects

Studies have shown that celebrity culture is one of many significant sources of influence that inform the construction of individuals’ identities as well as their outlook on work, life ambitions, and accomplishment. Celebrity also offers a unique window with which to examine both how social structures operate in the mainstream, and how social inequalities are reproduced. This study utilizes qualitative research methodology by way of longitudinal content analysis to examine how Taylor Swift’s public persona has evolved comparatively throughout the early and late stages of her career, specifically in regard to her gender, age, and music. This study identifies ten …


Removing Barriers And Establishing Gender And Sexuality Alliances In Schools: A Qualitative Analysis Of Gsa Advisor Experiences, Maxwell L. Keller Jan 2023

Removing Barriers And Establishing Gender And Sexuality Alliances In Schools: A Qualitative Analysis Of Gsa Advisor Experiences, Maxwell L. Keller

All Graduate Theses, Dissertations, and Other Capstone Projects

Current movements within the field of education include a focus on the ability of educators to support lesbian, gay, bisexual, transgender, and other sexual and gender minority (LGBTQ+) students within schools. As LGBTQ+ students are at increased risk for a variety of mental health and lifetime negative factors, it is vital to identify evidence-based supports for these students. School-based extra-curricular organizations such as Gay-Straight Alliances (GSA) have been found among the literature to increase positive educational outcomes for all students and serve as a protective factor for LGBTQ+ students who face these increased risks by virtue of their identities. However, …


Investigating Mirna Regulation Of The Human Apobec3 Enzymes, William Dietrich Jan 2023

Investigating Mirna Regulation Of The Human Apobec3 Enzymes, William Dietrich

All Graduate Theses, Dissertations, and Other Capstone Projects

The human apolipoprotein B mRNA editing enzyme catalytic polypeptide 3 (APOBEC3, A3) are a family of proteins consisting of seven enzymes, A3A, B, C, D, F, G and H, which function as cytosine deaminases. The enzymes’ purpose in the cell is to mutate viral DNA during infection hindering or stopping replication of viruses such as human papillomavirus, herpes simplex virus, and HIV-1. Several of the A3 enzymes have also been implicated in contributing to cancers such as head and neck and breast cancers by mutating cellular genomic DNA, making the ability to control A3 expression an attractive target for cancer …


Academic Dishonesty: The Ghost Of Papers Past, Wayne T. Whitmore Jan 2023

Academic Dishonesty: The Ghost Of Papers Past, Wayne T. Whitmore

All Graduate Theses, Dissertations, and Other Capstone Projects

This research project examined student’s acts of academic dishonesty and their beliefs regarding whether acts of academic dishonesty were acceptable through survey research conducted online at a two-year college and a four-year university in the Minnesota State (MinnState) system in southern Minnesota. This research aimed to build on existing research related to academic dishonesty in higher education. The sample included 195 students enrolled at a two-year comprehensive college and a four-year state university. Outcomes indicated a majority of students engaged in acts of academic dishonesty. Second, outcomes indicated men are more likely to engage in academic dishonesty than women. Third, …


Novel Amino Acids Dictate Differences In Sivmac239 And Hiv-2 Rod9 Vpx Cellular Localization, Hunter D. Mayhew Jan 2023

Novel Amino Acids Dictate Differences In Sivmac239 And Hiv-2 Rod9 Vpx Cellular Localization, Hunter D. Mayhew

All Graduate Theses, Dissertations, and Other Capstone Projects

Vpx is a protein encoded by Human Immunodeficiency Virus Type 2 (HIV-2) and specific Simian Immunodeficiency Viruses (SIVs) that is essential for successful infection of non-dividing myeloid cells. Vpx facilitates viral replication by trafficking the viral genome into the nucleus of infected cells and targeting the primarily nuclear innate immune protein SAMHD1 for proteasomal degradation. Considering that these activities occur at the nucleus, we hypothesized that Vpx nuclear localization would be tightly correlated with these functions. To assess this, site directed mutagenesis in combination with confocal microscopy or Western Blotting analyses were utilized to evaluate the determinants of nuclear accumulation …


An Archeozoological Analysis Of The Vosburg Site In Southern Minnesota, Madison M. Rutter Jan 2023

An Archeozoological Analysis Of The Vosburg Site In Southern Minnesota, Madison M. Rutter

All Graduate Theses, Dissertations, and Other Capstone Projects

The Blue Earth Oneota is a poorly defined taxon located in southern Minnesota. Few large-scale excavations have been conducted in the Blue Earth region, leading to gaps in the overall understating of western Oneota lifeway systems. This research utilizes archeozoological analysis on the zoological assemblage from the Vosburg site (21FA02), a Blue Earth Oneota site located in Faribault County. The Vosburg site is a large habitation site that has been excavated by Wilford in 1938 and 1947, Dobbs in 1979, and Schirmer in 2012. Legacy data from the 1938, 1947, and 1979 excavations was analyzed and compared to the zoological …