Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2022

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 24451 - 24480 of 32035

Full-Text Articles in Entire DC Network

Understanding How Higher Education Leaders Manage Their Personal Self In A Changing Environment, Brittany Kay Nielsen Jan 2022

Understanding How Higher Education Leaders Manage Their Personal Self In A Changing Environment, Brittany Kay Nielsen

All Electronic Theses and Dissertations

This research looked at how higher education leaders identified and managed their emotions in times of institutional change. Interviews were conducted with higher education leaders who were above the level of director and were not chancellors or presidents. The researcher sought to (1) discover the emotions of higher education leaders in times of change, (2) gain an understanding of how leaders managed their emotions, and (3) discover how leaders can build an understanding of emotional awareness in the workplace. Data collected from this study provides opportunities to understand the impact of emotions in the workplace and can benefit current and …

Go to article

The Relationship Between Staff Burnout And Staff Morale In Private International Schools In Sharjah, United Arab Emirates., Asif Mehmood Jan 2022

The Relationship Between Staff Burnout And Staff Morale In Private International Schools In Sharjah, United Arab Emirates., Asif Mehmood

All Electronic Theses and Dissertations

This research examined the significance of the relationship between educators' burnout and morale in three private international schools in Sharjah, UAE. Correlations between individual variables from the Maslach Burnout Inventory Educators Survey, the Areas of Worklife Survey, and the Morale variables from the Charles F. Kettering School Climate Profile produced distinct statistical evidence, rejecting the hypothesis that there is no significant relationship between educational staff burnout and morale. The study revealed a significant relationship between morale and the domains of emotional exhaustion and depersonalization. A total of 249 educational staff members participated in the study by completing the survey. The …

Go to article

Ifn-Γ Transforms The Transcriptomic Landscape And Triggers Myeloid Cell Hyperresponsiveness To Cause Lethal Lung Injury, Atul K. Verma, Michael Mckelvey, Md Bashir Uddin, Sunil Palani, Meng Niu, Christopher Bauer, Shengjun Shao, Keer Sun Jan 2022

Ifn-Γ Transforms The Transcriptomic Landscape And Triggers Myeloid Cell Hyperresponsiveness To Cause Lethal Lung Injury, Atul K. Verma, Michael Mckelvey, Md Bashir Uddin, Sunil Palani, Meng Niu, Christopher Bauer, Shengjun Shao, Keer Sun

Journal Articles: Pathology and Microbiology

Acute Respiratory Distress Syndrome (ARDS) is an inflammatory disease that is associated with high mortality but no specific treatment. Our understanding of initial events that trigger ARDS pathogenesis is limited. We have developed a mouse model of inflammatory lung injury by influenza and methicillin-resistant Staphylococcus aureus (MRSA) coinfection plus daily antibiotic therapy. Using this pneumonic ARDS model, here we show that IFN-γ receptor signaling drives inflammatory cytokine storm and lung tissue damage. By single-cell RNA sequencing (scRNA-seq) analysis, we demonstrate that IFN-γ signaling induces a transcriptional shift in airway immune cells, particularly by upregulating macrophage and monocyte expression of genes …

Go to article

Catabolic Ornithine Carbamoyltransferase Activity Facilitates Growth Of Staphylococcus Aureus In Defined Medium Lacking Glucose And Arginine, Itidal Reslane, Cortney R. Halsey, Amanda Stastny, Barbara J. Cabrera, Jong-Sam Ahn, Dhananjay Shinde, Madeline R. Galac, Margaret F. Sladek, Fareha Razvi, Mckenzie K. Lehman, Kenneth W. Bayles, Vinai Chittezham Thomas, Luke D. Handke, Paul D. Fey Jan 2022

Catabolic Ornithine Carbamoyltransferase Activity Facilitates Growth Of Staphylococcus Aureus In Defined Medium Lacking Glucose And Arginine, Itidal Reslane, Cortney R. Halsey, Amanda Stastny, Barbara J. Cabrera, Jong-Sam Ahn, Dhananjay Shinde, Madeline R. Galac, Margaret F. Sladek, Fareha Razvi, Mckenzie K. Lehman, Kenneth W. Bayles, Vinai Chittezham Thomas, Luke D. Handke, Paul D. Fey

Journal Articles: Pathology and Microbiology

Previous studies have found that arginine biosynthesis in Staphylococcus aureus is repressed via carbon catabolite repression (CcpA), and proline is used as a precursor. Unexpectedly, however, robust growth of S. aureus is not observed in complete defined medium lacking both glucose and arginine (CDM-R). Mutants able to grow on agar-containing defined medium lacking arginine (CDM-R) were selected and found to contain mutations within ahrC, encoding the canonical arginine biosynthesis pathway repressor (AhrC), or single nucleotide polymorphisms (SNPs) upstream of the native arginine deiminase (ADI) operon arcA1B1D1C1. Reverse transcription-PCR (RT-PCR) studies found that mutations within ccpA or ahrC or …

Go to article

The University Of Texas Of The Permian Basin Graduate Studies Catalog 2022-2023, The University Of Texas Of The Permian Basin Jan 2022

The University Of Texas Of The Permian Basin Graduate Studies Catalog 2022-2023, The University Of Texas Of The Permian Basin

Course Catalogs

No abstract provided.

Go to article

Adverse Childhood Experiences, Depressive Symptoms, And Binge Drinking: A Mediation Analysis, Nicole June Smalley Jan 2022

Adverse Childhood Experiences, Depressive Symptoms, And Binge Drinking: A Mediation Analysis, Nicole June Smalley

Graduate Research Theses & Dissertations

Sixty-one percent of adults in a national CDC study reported experiencing at least one AdverseChildhood Experience (ACE), and 1 in 6 reported 4 or more ACEs. The purpose of this hierarchical regression analysis is to target gaps in research specific to examining the relationships between Adverse Childhood Experiences (ACEs), depressive symptoms experienced in adolescence, and binge drinking behaviors in emerging adulthood using Bronfenbrenner’s Ecological Systems Theory. Longitudinal, secondary data from the National Longitudinal Study of Adolescent to Adult Health dataset (Add Health) (Harris et al., 2009) was used in this study. Data was collected in four waves of surveys and …

Go to article

Value And Impact Of Nurse Innovators Working In Academic, Industry, And Government Settings: A Qualitative Study, Olivia A. Lemberger Jan 2022

Value And Impact Of Nurse Innovators Working In Academic, Industry, And Government Settings: A Qualitative Study, Olivia A. Lemberger

Graduate Research Theses & Dissertations

This dissertation explores the value and impact of nurse innovators working in academic, industry, and government settings. A qualitative descriptive study was chosen to understand the contributions of nurse innovators and the outcomes associated with their innovative endeavors. The purpose of this study is to better understand the contributions of nurse innovators by answering the following research questions: 1) How do nurses perceive that nursing innovation adds value to and/or impacts patients or the United States health care system? 2) What metrics/outcome measures do nurse innovators identify as relevant or useful to evaluate innovation success? And 3) What methods/resources do …

Go to article

The Staphylococcus Aureus Cida And Lrga Proteins Are Functional Holins Involved In The Transport Of By-Products Of Carbohydrate Metabolism, Jennifer L. Endres, Sujata S. Chaudhari, Xinyan Zhang, Janani Prahlad, Shu-Qi Wang, Lily A. Foley, Sorin Luca, Jeffrey L. Bose, Vinai C. Thomas, Kenneth W. Bayles Jan 2022

The Staphylococcus Aureus Cida And Lrga Proteins Are Functional Holins Involved In The Transport Of By-Products Of Carbohydrate Metabolism, Jennifer L. Endres, Sujata S. Chaudhari, Xinyan Zhang, Janani Prahlad, Shu-Qi Wang, Lily A. Foley, Sorin Luca, Jeffrey L. Bose, Vinai C. Thomas, Kenneth W. Bayles

Journal Articles: Pathology and Microbiology

The Staphylococcus aureus cidABC and lrgAB operons encode members of a well-conserved family of proteins thought to be involved in programmed cell death (PCD). Based on the structural similarities that CidA and LrgA share with bacteriophage holins, we have hypothesized that these proteins function by forming pores within the cytoplasmic membrane. To test this, we utilized a "lysis cassette" system that demonstrated the abilities of the cidA and lrgA genes to support bacteriophage endolysin-induced cell lysis. Typical of holins, CidA- and LrgA-induced lysis was dependent on the coexpression of endolysin, consistent with the proposed holin-like functions of these proteins. In …

Go to article

Uri Libraries' Ai Lab--Evolving To Meet The Needs Of Students And Research Communities, Harrison Dekker, Angel Ferria, Indrani Mandal Jan 2022

Uri Libraries' Ai Lab--Evolving To Meet The Needs Of Students And Research Communities, Harrison Dekker, Angel Ferria, Indrani Mandal

Technical Services Faculty Publications

No abstract provided.

Go to article

Profiling The Plasmid Conjugation Potential Of Urinary Escherichia Coli, Cesar Montelongo Hernandez, Catherine Putonti, Alan J. Wolfe Jan 2022

Profiling The Plasmid Conjugation Potential Of Urinary Escherichia Coli, Cesar Montelongo Hernandez, Catherine Putonti, Alan J. Wolfe

Biology: Faculty Publications and Other Works

Escherichia coli is often associated with urinary tract infection (UTI). Antibiotic resistance in E. coli is an ongoing challenge in managing UTI. Extrachromosomal elements – plasmids – are vectors for clinically relevant traits, such as antibiotic resistance, with conjugation being one of the main methods for horizontal propagation of plasmids in bacterial populations. Targeting of conjugation components has been proposed as a strategy to curb the spread of plasmid-borne antibiotic resistance. Understanding the types of conjugative systems present in urinary E. coli isolates is fundamental to assessing the viability of this strategy. In this study, we profile two well-studied conjugation …

Go to article

Improving Recombinant Zoster Vaccination Rates In Patients Receiving Biologic Therapy In The Rheumatology Clinics At The Orlando Va Healthcare System, Kathlyn Camargo Macias, Taylor Kann, Marilyn Mosquera, Ravi Shahu Khal, Ashwini Komarla Jan 2022

Improving Recombinant Zoster Vaccination Rates In Patients Receiving Biologic Therapy In The Rheumatology Clinics At The Orlando Va Healthcare System, Kathlyn Camargo Macias, Taylor Kann, Marilyn Mosquera, Ravi Shahu Khal, Ashwini Komarla

North Florida Division GME Research Day 2022

No abstract available.

Go to article

Web-Based Platform For Analysis Of Rna Folding From High Throughput Chemical Probing Data, Christopher Jurich, Amir Brivanlou, Silvi Rouskin, Joseph D. Yesselman Jan 2022

Web-Based Platform For Analysis Of Rna Folding From High Throughput Chemical Probing Data, Christopher Jurich, Amir Brivanlou, Silvi Rouskin, Joseph D. Yesselman

Department of Chemistry: Faculty Publications

RNA structures play critical roles in regulating gene expression across all domains of life and viruses. Chemical probing methods coupled with massively parallel sequencing have revolutionized the RNA structure field by enabling the assessment of many structures in their native, physiological context. Previously, we developed Dimethyl-Sulfate-based Mutational Profiling and Sequencing (DMS-MaPseq), which uses DMS to label the Watson-Crick face of open and accessible adenine and cytosine bases in the RNA. We used this approach to determine the genome-wide structures of HIV-1 and SARS-CoV-2 in infected cells, which permitted uncovering new biology and identifying therapeutic targets. Due to the simplicity and …

Go to article

Western Civilization: A Concise History, Sanford Robins, Christopher Brooks Jan 2022

Western Civilization: A Concise History, Sanford Robins, Christopher Brooks

SUBR Faculty Open Educational Resources

This class will discuss the history of Western Civilization (primarily Mesopotamia, the Near East, and Europe) from the earliest known civilizations to about the year 1500 CE. You will learn about major events, countries, ideas, and people and the impact that these had on their times and on how history developed. This knowledge is important for you to have because you are a person who lives in a society shaped by these events and ideas. The ultimate goal of this class is to help you understand how the flow of history has impacted the present and to help you understand …

Go to article

Topological Hierarchies And Decomposition: From Clustering To Persistence, Kyle A. Brown Jan 2022

Topological Hierarchies And Decomposition: From Clustering To Persistence, Kyle A. Brown

Browse all Theses and Dissertations

Hierarchical clustering is a class of algorithms commonly used in exploratory data analysis (EDA) and supervised learning. However, they suffer from some drawbacks, including the difficulty of interpreting the resulting dendrogram, arbitrariness in the choice of cut to obtain a flat clustering, and the lack of an obvious way of comparing individual clusters. In this dissertation, we develop the notion of a topological hierarchy on recursively-defined subsets of a metric space. We look to the field of topological data analysis (TDA) for the mathematical background to associate topological structures such as simplicial complexes and maps of covers to clusters in …

Go to article

Stylosanthes Hamata - Environmental Weed Risk Assessment 2022, Department Of Primary Industries And Regional Development, Western Australia Jan 2022

Stylosanthes Hamata - Environmental Weed Risk Assessment 2022, Department Of Primary Industries And Regional Development, Western Australia

Environmental Weed Risk Assessments

Introducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Caribbean stylo (Stylosanthes hamata). Caribbean stylo (Stylosanthes hamata) is an annual or short-lived perennial herbaceous legume. Individual plants behave as self-regenerating annuals or biennials. In the Northern Territory up to 40% of plants persist from one wet season to the next (Cameron 2010), but this varies depending on the length of the dry season. It …

Go to article

Sulfated Flavonoids In The Asteraceae, Alyssa Rice Jan 2022

Sulfated Flavonoids In The Asteraceae, Alyssa Rice

Senior Honors Projects

Gypsum soils are a unique soil type with high levels of calcium and sulfur, which creates a harsh living environment for plants. To survive these conditions, plants have evolved a suite of mechanisms to survive these excess minerals, such as sulfur. In this study we aimed to determine if gypsum status was related to sulfated flavonoid production in plants of the Asteraceae. Flower and leaf tissues were collected from herbarium specimens representing gypsophiles, gypsovags, and gypsofuges. These tissues were analyzed for the presence of sulfated flavonoids using Thin Layer Chromatography (TLC). We observed sulfated flavonoid production in leaf and flower …

Go to article

Cardiology And The Brain: How An Individual's Cardiovascular Health Relates To Their Mental Health, Megan Shea Kopicko Jan 2022

Cardiology And The Brain: How An Individual's Cardiovascular Health Relates To Their Mental Health, Megan Shea Kopicko

Senior Honors Theses and Projects

A scoping review was conducted to explore the relationship between the cardiovascular system and neurological system to determine if there is a connection between certain mental illnesses and heart health. This study was guided through implementation of Arksey and O’Malley’s (2005) framework for scoping reviews. A literature search was conducted using PubMed, CINAHL, Cochrane Library, and Google Scholar databases. Of the 934,251 sources found, only 21 studies met the study criteria and were ultimately selected for this study. Upon review, three themes were identified: (a) anxiety and cardiovascular disease; (b) schizophrenia and cardiovascular disease; and (c) depression and cardiovascular disease. …

Go to article

"Only To Have A Say In The Way He Dies": Bodily Autonomy And Methods Of Execution, Alexandra L. Klein Jan 2022

"Only To Have A Say In The Way He Dies": Bodily Autonomy And Methods Of Execution, Alexandra L. Klein

Scholarly Articles

Capital punishment is one of the most significant intrusions into a person's bodily autonomy; the state takes a person's life. Even though the state has stripped a person on death row of much of their autonomy and intends to kill them, removing all autonomy, a person sentenced to death may, in some circumstances, choose how they will die. While most states rely on a single method of execution, some states permit a condemned person to choose among two or more methods of execution. Constitutional challenges to methods of execution requires the challenger to demonstrate a substantial risk of severe pain …

Go to article

Catholic Seminarians On “Real Men”, Sexuality, And Essential Male Inclusivity., Medora W. Barnes Jan 2022

Catholic Seminarians On “Real Men”, Sexuality, And Essential Male Inclusivity., Medora W. Barnes

2022 Faculty Bibliography

This paper is based on an empirical study using in-depth qualitative interviews that examines how Roman Catholic undergraduate seminarians in the United States understand gender, sexuality and masculinity. The findings describe how seminarians reject interactionist and social constructionist models of gender, and rely on a strict biological based model where sex/gender are seen as a unified concept. This leads them to adopt an “essential male inclusivity”, where they argue that all people assigned male at birth have equal claim to “manhood”, which eases pressures on them to act in gender normative ways. The social-psychological and identity-based motivations of these beliefs …

Go to article

Deoxybuzonamine Isomers From The Millipede Brachycybe Lecontii (Platydesmida: Andrognathidae), Tappy H. Jones, Daniel P. Harrison, Carla Menegatti, Emily Levers, Kenneth Knott, Paul Marek, Derek A. Hennen, Matt T. Kasson, Angie M. Macias, Brian Lovett, Ralph Saporito Jan 2022

Deoxybuzonamine Isomers From The Millipede Brachycybe Lecontii (Platydesmida: Andrognathidae), Tappy H. Jones, Daniel P. Harrison, Carla Menegatti, Emily Levers, Kenneth Knott, Paul Marek, Derek A. Hennen, Matt T. Kasson, Angie M. Macias, Brian Lovett, Ralph Saporito

2022 Faculty Bibliography

Millipedes (Diplopoda) are well known for their toxic or repellent defensive secretions. Here, we describe (6aR,10aS,10bR)-8,8-dimethyldodecahydropyrrolo[2,1-a]isoquinoline [trans-anti-trans-deoxybuzonamine (1a)] and (rel-6aR,10aR,10bR)-8,8-dimethyldodecahydropyrrolo[2,1-a]isoquinoline [trans-syn-cis-deoxybuzonamine (1b)], two isomers of deoxybuzonamine found in the chemical defense secretions of the millipede Brachycybe lecontii Wood (Colobognatha, Platydesmida, Andrognathidae). The carbon–nitrogen skeleton of these compounds was determined from their MS and GC-FTIR spectra obtained from the MeOH extract of whole millipedes, along with a subsequent selective synthesis. Their structures were established from their 1D (¹H, ¹³C) and 2D NMR (COSY, NOESY, multiplicity-edited HSQC, HSQC-TOCSY, HMBC) spectra. Additionally, computational chemistry (DFT and DP4) was used to identify the relative …

Go to article

Gender Differences And The Influence Of Body Composition On Land And Pool-Based Assessments Of Anaerobic Power And Capacity, Jacquelyn N. Zera, Elizabeth F. Nagle, Emma Connell, Erin Curtin, Wilmina Marget, Anna P. Simonson, Takashi Nagai, John Abt, Scott Lephart Jan 2022

Gender Differences And The Influence Of Body Composition On Land And Pool-Based Assessments Of Anaerobic Power And Capacity, Jacquelyn N. Zera, Elizabeth F. Nagle, Emma Connell, Erin Curtin, Wilmina Marget, Anna P. Simonson, Takashi Nagai, John Abt, Scott Lephart

2022 Faculty Bibliography

No abstract provided.

Go to article

The Impacts Of The Molecular Education And Research Consortium In Undergraduate Computational Chemistry On The Careers Of Women In Computational Chemistry, Kelly Anderson, Sarah Arradondo, K Aurelia Ball, Chrystal D. Bruce, Maria A. Gomez, Kedan He, Heidi Hendrickson, Lindsey Madison, Ashley Ringer Mcdonald, Maria C. Nagan, Carol Parish, Caitlin E. Scott, Patricia Soto, Aime'e Tomlinson, Mychel Varner Jan 2022

The Impacts Of The Molecular Education And Research Consortium In Undergraduate Computational Chemistry On The Careers Of Women In Computational Chemistry, Kelly Anderson, Sarah Arradondo, K Aurelia Ball, Chrystal D. Bruce, Maria A. Gomez, Kedan He, Heidi Hendrickson, Lindsey Madison, Ashley Ringer Mcdonald, Maria C. Nagan, Carol Parish, Caitlin E. Scott, Patricia Soto, Aime'e Tomlinson, Mychel Varner

2022 Faculty Bibliography

The Molecular Education and Research Consortium in Undergraduate Computational Chemistry (MERCURY) has supported a diverse group of faculty and students for over 20 years by providing computational resources as well as networking opportunities and professional support. The consortium comprises 38 faculty (42% women) at 34 different institutions, who have trained nearly 900 undergraduate students, more than two-thirds of whom identify as women and one-quarter identify as students of color. MERCURY provides a model for the support necessary for faculty to achieve professional advancement and career satisfaction. The range of experiences and expertise of the consortium members provides excellent networking opportunities …

Go to article

Om92, A Glp-1 Enhancer Mutation, Is An Allele Of Ekl-1, Samantha A. Stein, Olivia F. Zucaro, Harold E. Smith, Kevin F. O'Connell, Jill M. Spoerke, Eleanor M. Maine, James L. Lissemore Jan 2022

Om92, A Glp-1 Enhancer Mutation, Is An Allele Of Ekl-1, Samantha A. Stein, Olivia F. Zucaro, Harold E. Smith, Kevin F. O'Connell, Jill M. Spoerke, Eleanor M. Maine, James L. Lissemore

2022 Faculty Bibliography

Germline stem cell proliferation in C. elegans requires activation of the GLP-1/Notch receptor, which is located on the germline plasma membrane and encoded by the glp-1 gene. We previously identified several genes whose products directly or indirectly promote activity of the GLP-1 signaling pathway by finding mutations that enhance the germline phenotype of a glp-1(ts) allele, glp-1(bn18) . Here, we report phenotypic and molecular analysis of a new ekl-1 allele, ekl-1(om92) , that enhances the glp-1(bn18) phenotype. ekl-1(om92) is a 244 bp deletion predicted to generate a frameshift and premature termination codon, yielding a severely truncated protein, suggesting it is …

Go to article

Roholtiella Volcanica Sp. Nov., A New Species Of Cyanobacteria From Kamchatkan Volcanic Soils, Lira A. Gaysina, Jeffrey R. Johansen, Aniket Saraf, Razeda Z. Allaguvatova, Sagarika Paul, Prashant Singh Jan 2022

Roholtiella Volcanica Sp. Nov., A New Species Of Cyanobacteria From Kamchatkan Volcanic Soils, Lira A. Gaysina, Jeffrey R. Johansen, Aniket Saraf, Razeda Z. Allaguvatova, Sagarika Paul, Prashant Singh

2022 Faculty Bibliography

During a study of biodiversity of cyanobacteria in Gorely volcano soils (Kamchatka Peninsula), a strain of heterocytous, a false branching cyanobacterium with gradually tapered filaments, was isolated. Prominent features of the strain were purplish-grey trichomes and firm, distinct multilayered sheaths. Based on the results obtained from the morphological, ecological, and phylogenetic analysis using the 16S rRNA and 16S–23S ITS region, 16S–23S ITS secondary structure analysis, comparison of flanking regions of BoxB and V3 helices, and the p-distance between the 16S–23S ITS region, we describe our strain K7 as a novel species of the genus Roholtiella with the name Roholtiella volcanica …

Go to article

Scale Development And Validation Of Transaction Cost Economics Typology For Contracts: A Systems Thinking Approach, Sedat Cevikparmak, Hasan Celik, Saban Adana, Hasan Uvet, Brian Sauser, David Nowiki Jan 2022

Scale Development And Validation Of Transaction Cost Economics Typology For Contracts: A Systems Thinking Approach, Sedat Cevikparmak, Hasan Celik, Saban Adana, Hasan Uvet, Brian Sauser, David Nowiki

2022 Faculty Bibliography

A variety of contract typologies that exist in the literature are helpful in the exploration of different approaches in contractual relations, but only when measured with the right instruments. Although Transaction Cost Economics (TCE) has a distinct, high-level, and abstract typology for contracts, it still lacks a measurement scale. In this paper, a measurement scale for the TCE contract typology (classical, neo-classical, and relational contracts) was developed and validated, using systems thinking approach and experimental design to contribute to the empirical tests of TCE within the contracting realm. First, the antecedents of contract selection within the TCE literature were analyzed …

Go to article

Intestinal Endothelial Cells Promote Hiv Latent Infection In Resting And Activated Cd4+ T-Cells, Nathan Dapprich, Jessica Eddy, Fisher Pham, Anding Shen Jan 2022

Intestinal Endothelial Cells Promote Hiv Latent Infection In Resting And Activated Cd4+ T-Cells, Nathan Dapprich, Jessica Eddy, Fisher Pham, Anding Shen

Summer Research

No abstract provided.

Go to article

Alkaloid-Based Chemical Defenses In 11 Species Of Bufonid Poison Frogs From Brazil (Bufonidae: Melanophryniscus), Emily Staufer Jan 2022

Alkaloid-Based Chemical Defenses In 11 Species Of Bufonid Poison Frogs From Brazil (Bufonidae: Melanophryniscus), Emily Staufer

Masters Theses

The term ‘poison frog’ describes members of five anuran families that are capable of sequestering lipophilic, alkaloid-based chemical defenses from their prey. Alkaloid defenses can vary widely within and among poison frog species, mostly linked to differences in availability of arthropod prey at different scales. While research has mainly focused on alkaloid variation within the dendrobatid and mantellid poison frogs, bufonid poison frogs in the genus Melanophryniscus demonstrate high inter- and intra-species alkaloid variation, and some members are capable of both sequestering dietary alkaloids and synthesizing alkaloids metabolically. However, of the 31 species of Melanophryniscus, only eight have ever had …

Go to article

“Albertania” And “Egbenema”, Panding Biodiversity In The Oculatellaceae (Cyanobacteria)., Mildred Akagha Jan 2022

“Albertania” And “Egbenema”, Panding Biodiversity In The Oculatellaceae (Cyanobacteria)., Mildred Akagha

Masters Theses

To conduct molecular studies of cyanobacteria of Lagos, Nigeria, a total of eight soil/subaerial samples were collected in Lagos State, Nigeria, and used to isolate cyanobacterial cultures that were characterized microscopically, sequenced, and phylogenetically analyzed. Within the resulting set of cultures, a number of Synechococcales were observed, particularly belonging to Oculatellaceae. “Egbenema” and two new putative species of the recently described genus Albertania were found. Both genera belong to a supported clade within the Oculatellaceae that includes Trichotorquatus and Komarkovaea. The two new putative species of Albertania, “A. egbensis” and “A. latericola”, were from …

Go to article

Faculty Notes, John Carroll University Jan 2022

Faculty Notes, John Carroll University

Faculty Notes - John Carroll University

Spring 2022, Volume 15, Issue 1

Go to article

Head Impact Exposure In Youth And Collegiate American Football, Grace B. Choi, Eric P. Smith, Stefan M. Duma, Steven Rowson, Eamon Campolettano, Mireille E. Kelley, Derek A. Jones, Joel D. Stitzel, Jillian E. Urban, Amaris Genemaras, Jonathan G. Beckwith, Richard M. Greenwald, Arthur C. Maerlender, Joseph J. Crisco Jan 2022

Head Impact Exposure In Youth And Collegiate American Football, Grace B. Choi, Eric P. Smith, Stefan M. Duma, Steven Rowson, Eamon Campolettano, Mireille E. Kelley, Derek A. Jones, Joel D. Stitzel, Jillian E. Urban, Amaris Genemaras, Jonathan G. Beckwith, Richard M. Greenwald, Arthur C. Maerlender, Joseph J. Crisco

Center for Brain, Biology, and Behavior: Faculty Publications

The relationship between head impact and subsequent brain injury for American football players is not well defined, especially for youth. The objective of this study is to quantify and assess Head Impact Exposure (HIE) metrics among youth and collegiate football players. This multiseason study enrolled 639 unique athletes (354 collegiate; 285 youth, ages 9–14), recording 476,209 head impacts (367,337 collegiate; 108,872 youth) over 971 sessions (480 collegiate; 491 youth). Youth players experienced 43 and 65% fewer impacts per competition and practice, respectively, and lower impact magnitudes compared to collegiate players (95th percentile peak linear acceleration (PLA, g) competition: 45.6 vs …

Go to article

First Prev Next Last