Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (19695)
- Arts and Humanities (18429)
- Law (14369)
- Education (14189)
- Medicine and Health Sciences (11981)
-
- Physical Sciences and Mathematics (9572)
- Life Sciences (8768)
- Engineering (7536)
- Higher Education (6510)
- Business (4982)
- Creative Writing (4106)
- History (3921)
- Art and Design (3577)
- Sociology (3315)
- Poetry (3143)
- Psychology (3072)
- Library and Information Science (3043)
- Fiction (3024)
- Photography (3014)
- Nonfiction (2962)
- Illustration (2804)
- Religion (2787)
- Communication (2498)
- Medical Specialties (2431)
- Public Affairs, Public Policy and Public Administration (2406)
- Public Health (2125)
- Computer Sciences (2103)
- Biology (1748)
- English Language and Literature (1685)
- Economics (1621)
- Institution
-
- Butler University (3339)
- University of Nebraska - Lincoln (3171)
- Georgia Southern University (3078)
- University of South Florida (2609)
- Purdue University (2426)
-
- University of Alabama at Birmingham (2096)
- University of Kentucky (2044)
- Brigham Young University (1810)
- City University of New York (CUNY) (1726)
- University of Montana (1705)
- Utah State University (1687)
- Kenyon College (1665)
- The University of Akron (1628)
- University of New Hampshire (1584)
- Louisiana State University (1576)
- Villanova University Charles Widger School of Law (1478)
- University of Mississippi (1450)
- University of Central Florida (1378)
- Western Kentucky University (1366)
- University of New Mexico (1350)
- Virginia Commonwealth University (1317)
- TÜBİTAK (1287)
- East Tennessee State University (1256)
- Portland State University (1230)
- California Polytechnic State University, San Luis Obispo (1178)
- Walden University (1167)
- UIdaho Law (1140)
- Singapore Management University (1069)
- University of Arkansas, Fayetteville (1055)
- University of New Orleans (1055)
- Keyword
-
- Watson (1524)
- Postcard (1523)
- Georgia Southern University (1334)
- France (1242)
- Education (979)
-
- Athletics (927)
- Newsletter (659)
- History (636)
- Armstrong State University (592)
- United States (553)
- Humans (552)
- English (486)
- Poetry (485)
- 2015 (476)
- Kentucky (465)
- Gender (428)
- Higher education (421)
- Media (399)
- Archaeology (376)
- EIU (371)
- Newspaper (366)
- Psychology (360)
- Technology (344)
- Female (332)
- Women (330)
- Leadership (329)
- Latin America (328)
- Spanish (328)
- News Releases (322)
- Art (317)
- Publication
-
- Manuscripts (2937)
- Theses and Dissertations (2930)
- Faculty Publications (1715)
- Browse All News (1548)
- Orville E. Watson, D.D. Postcard Collection (1523)
-
- Electronic Theses and Dissertations (1377)
- Akron Law Review (1340)
- 2015 Decisions (1336)
- Walden Dissertations and Doctoral Studies (1070)
- University of New Orleans Syllabi (967)
- All Forum Articles (922)
- Faculty Scholarship (854)
- Dissertations (853)
- Publications and Research (805)
- Open Access Publications (779)
- Open Access Dissertations (749)
- Petersburg National Battlefield Archaeological Recovery Project (722)
- University of Montana Course Syllabi (710)
- Theses (698)
- ETSU News (689)
- Articles (662)
- Journal Articles (650)
- Master's Theses (629)
- Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions) (610)
- Honors Theses (576)
- Idaho Supreme Court Records & Briefs, All (570)
- University of Mississippi News (570)
- USF Tampa Graduate Theses and Dissertations (557)
- University of Chicago Legal Forum (541)
- Not Reported (540)
- Publication Type
Articles 8851 - 8880 of 146337
Full-Text Articles in Entire DC Network
School Policy And Practice To Tackle A Public Health Problem: Sudden Cardiac Arrest, Leigh Lynn Mcgown-Kauffman
School Policy And Practice To Tackle A Public Health Problem: Sudden Cardiac Arrest, Leigh Lynn Mcgown-Kauffman
Dissertations
Sudden cardiac arrest (SCA) is a leading cause of death in the United States. While the medical research has exhaustively documented that immediate response directly impacts survival rates in SCA and that schools could be the best catalyst for creating change by bystanders, there is little to no educational research addressing school policy or practices in regards to cardiac emergencies in schools. The purpose of this dissertation was to identify and describe characteristics of the Colorado schools that offer cardiopulmonary resuscitation (CPR) training and onsite automated external defibrillators (AED). Two research questions were answered, Of respondents, what are the characteristics …
Predicting Coaching Efficacy In National Collegiate Athletic Association Assistant Coaches: A Social Psychological Analysis Of Coaching Goals, Commitment, And Values, Brett Allen Nichols
Predicting Coaching Efficacy In National Collegiate Athletic Association Assistant Coaches: A Social Psychological Analysis Of Coaching Goals, Commitment, And Values, Brett Allen Nichols
Dissertations
Coaching is a complex undertaking and understanding what it takes to be an effective coach is important for coaches and researchers in the field of sport and exercise science. Horn’s (2008) heuristic model of coaching effectiveness organizes and summarizes the previously established relationships among predictors and outcomes of effective coaching. The purpose of this study was to examine the heart of Horn’s model, specifically examining coaching goals, coaching commitment, and coaching values with the five dimensions of coaching efficacy (Feltz et al., 1999; Myers et al., 2008). Using intercollegiate assistant coaches (N=740) this study demonstrated initial reliability and factorial validity …
The Meaning Of Physical Activity From The Perspective Of Indonesian Immigrant Youth, Caly Setiawan
The Meaning Of Physical Activity From The Perspective Of Indonesian Immigrant Youth, Caly Setiawan
Dissertations
The purpose of this phenomenological study was to examine what constitutes the experience of physical activity for Indonesian immigrant youth. Fifteen Indonesian young people aged 13 to 18 participated in the study. Data were collected through two sets of interviews. During the first set of interviews, data were gathered about physical activity experiences and the meanings that the youth ascribed to their participation. A second set of interviews were conducted to collect information about the participants’ strategies for engaging Indonesian immigrants in physical activity. Seven purposefully selected participants were the respondents in these interviews. Data were analyzed using a three …
All Families Are Unique: Experiences Of Lesbian-Parented Families, Rachel Tova Gall
All Families Are Unique: Experiences Of Lesbian-Parented Families, Rachel Tova Gall
Dissertations
This study explored the experiences of families with lesbian mothers and elementary school-aged children residing in metropolitan areas of the United States. This phenomenology aimed to transcend comparative and binary research to include the voices of sexual minorities and children. Eight whole-family interviews were conducted in alignment with the study’s systemic-constructivist approach. A number of themes emerged from the data that were generally consistent with prior research. Mothers were intentional about the communities in which they surrounded themselves, the process of having children, and having discussions with children about potential discrimination. Participants saw themselves as advocates and were typically out …
The Development Of Bob Brookmeyer's Compositional Style: A Comparative Study Of Six Works For Jazz Ensemble, Ryan Patrick Middagh
The Development Of Bob Brookmeyer's Compositional Style: A Comparative Study Of Six Works For Jazz Ensemble, Ryan Patrick Middagh
Dissertations
This study examines six pieces for large jazz ensemble written by Bob Brookmeyer in order to trace his compositional development over time. My analyses of melody, rhythm, form, structure, voicings, harmony, and orchestration illustrate how Brookmeyer's compositions fell into three distinct periods: early, middle, and late. In Brookmeyer's early period, his compositions exhibit a strong influence from the Count Basie band, conventional chord progressions, and eight- or twelve-measure phrases. His middle period compositions are defined by harmonic extremes and the use of indeterminacy, whereas he returned to simpler harmonies and added greater weight to counterpoint in his late period. Findings …
Design Of A High Capacity, Scalable, And Green Wireless Communication System Leveraging The Unlicensed Spectrum, Mohammad Riaz Khawer
Design Of A High Capacity, Scalable, And Green Wireless Communication System Leveraging The Unlicensed Spectrum, Mohammad Riaz Khawer
Dissertations - ALL
The stunning demand for mobile wireless data that has been recently growing at an exponential rate requires a several fold increase in spectrum. The use of unlicensed spectrum is thus critically needed to aid the existing licensed spectrum to meet such a huge mobile wireless data traffic growth demand in a cost effective manner. The deployment of Long Term Evolution (LTE) in the unlicensed spectrum (LTE-U) has recently been gaining significant industry momentum. The lower transmit power regulation of the unlicensed spectrum makes LTE deployment in the unlicensed spectrum suitable only for a small cell. A small cell utilizing LTE-L …
Soft Reversible Actuator Based On Shape Memory Polymer, Che Tan
Soft Reversible Actuator Based On Shape Memory Polymer, Che Tan
Dissertations - ALL
My research employs two shape memory polymer based approaches to develop thermally-triggered soft reversible actuators. Our approaches throughout this thesis aim at developing soft actuators with both simple and complex geometries that have the spatial control over actuation shapes, which makes them desirable for a broad range of applications.
In this thesis, we employed a porous poly (caprolactone) (PCL) shape memory polymer foam infiltrated with PDMS elastomeric matrix to fabricate the actuators. Thermal/mechanical characterizations were used to demonstrate good thermal properties and thermomechanical behavior of materials and composites. Scanning electron microscopy was conducted to illustrate the morphology of the composite …
Heterogeneous Sensor Signal Processing For Inference With Nonlinear Dependence, Hao He
Heterogeneous Sensor Signal Processing For Inference With Nonlinear Dependence, Hao He
Dissertations - ALL
Inferring events of interest by fusing data from multiple heterogeneous sources has been an interesting and important topic in recent years. Several issues related to inference using heterogeneous data with complex and nonlinear dependence are investigated in this dissertation. We apply copula theory to characterize the dependence among heterogeneous data.
In centralized detection, where sensor observations are available at the fusion center (FC), we study copula-based fusion. We design detection algorithms based on sample-wise copula selection and mixture of copulas model in different scenarios of the true dependence. The proposed approaches are theoretically justified and perform well when applied to …
Eliciting Bootstrapping: The Development Of Introductory Statistics Students’ Informal Inferential Reasoning Via Resampling, Jeffrey Allen Mclean
Eliciting Bootstrapping: The Development Of Introductory Statistics Students’ Informal Inferential Reasoning Via Resampling, Jeffrey Allen Mclean
Dissertations - ALL
Bootstrapping has become an important tool for statisticians, who assert that it is intuitive to novice statistics students. The process of collecting bootstrap resamples was once time demanding, but technology now allows data collection to be performed nearly instantaneously. This study focuses on the construction and development of secondary and tertiary introductory statistics students' (n=68) reasoning about bootstrapping and informal inference. Students engaged in a four-week instructional unit designed as two model development sequences. Through the use of hands-on manipulatives and technology, students constructed and developed reasoning of sampling, the resampling process of bootstrapping, and inference. The focus of my …
Trying Times: Disability, Activism, And Education In Samoa, 1970-1980, Juliann Anesi
Trying Times: Disability, Activism, And Education In Samoa, 1970-1980, Juliann Anesi
Dissertations - ALL
In the 1970s and 1980s, Samoan women organizers established Aoga Fiamalamalama and Loto Taumafai, which were educational institutions in Samoa, an island in the Pacific. Establishing these schools for students with intellectual and physical disabilities, excluded from attending formal schools based on the misconception that they were "uneducable". In this project, I seek to understand how parent advocates, allies, teachers, women organizers, women with disabilities, and former students of these schools understood disability, illness, inclusive education, and community organizing. Through interviews and analysis of archival documents, stories, cultural myths, legends related to people with disabilities, pamphlets, and newspaper media, I …
Policy Through Rhetoric: An Analysis Of Cyber Security And Privacy Policy, Alec Davis
Policy Through Rhetoric: An Analysis Of Cyber Security And Privacy Policy, Alec Davis
Washington Semester Program
No abstract provided.
Identity-Based Assignments And Student Disinterest In Fyc, Benjamin F. Pearce
Identity-Based Assignments And Student Disinterest In Fyc, Benjamin F. Pearce
Master of Arts in Professional Writing Capstones
This project attempts to investigate the position of identity-based assignments in FYC and identify the student response to these assignments. If individuals teaching and studying FYC can determine that identity-based assignments raise first-year student interest in academic writing then we should intensify the study and use of these assignments.
The Legends Of Bigfoot: Or How I Regained My Manhood, Blaine Mccarty
The Legends Of Bigfoot: Or How I Regained My Manhood, Blaine Mccarty
Master of Arts in American Studies Capstones
Masculinity is a culturally defined identity that exists with no single way to express it. However, the cultural politics police masculinity to appear natural and non-changing, but masculinity changes over history influenced by events and the culture from which it gets its definition. Because of this twofold influence on the identity, there is a constant struggle of the appropriate ways to express masculinity in its attempt to normalize itself by defining what is and is not masculine. This work examines how Bigfoot, the hairy fabled monster, embodies conversations about masculinity during a shift in the masculine identity in a constantly …
Preventing Thymus Involution In K5.Cyclin D1 Transgenic Mice Sustains The Naïve T Cell Compartment With Age, Michelle L. Bolner
Preventing Thymus Involution In K5.Cyclin D1 Transgenic Mice Sustains The Naïve T Cell Compartment With Age, Michelle L. Bolner
Dissertations and Theses (Open Access)
The thymus maintains T cell receptor (TCR) repertoire diversity through perpetual release of self-MHC restricted naive T cells. However, thymus involution during the aging process reduces naïve T cell output, leading to defective immune responsiveness to newly encountered antigens. We have found that early thymus involution precipitates the age-associated shift favoring memory T cell dominancy in young control mice. Furthermore, we have shown that age-related thymus involution is prevented in mice expressing a keratin 5 promoter-driven Cyclin D1 (K5.D1) transgene in thymic epithelial cells (TECs). Thymopoiesis occurs normally in K5.D1 transgenic thymi and sustains T cell output to prevent the …
Investigation Of Quatitative Image Features From Pretreatment Ct And Fdg-Pet Scans In Stage Iii Nsclc Patients Undergoing Defintive Radiation Therapy, David Fried
Dissertations and Theses (Open Access)
The purpose of this work was to determine if quantitative image features (QIFs) extracted from computed tomography (CT) and flourodeoxyglucose (FDG) positron emission tomography (PET) could provide prognostic information to improve outcome models. Our goal for this work was to determine if it may one day be feasible to incorporate QIFs into personalized cancer care. QIFs were used to quantitatively characterize patient disease as seen on imaging. A leave-one-out cross-validation procedure was used to assess the prognostic ability of QIFs extracted from CT and PET in addition to conventional prognostic factors (CPFs). QIFs were found to improve model fit for …
Person-Corporate Social Responsibility Fit: Considering The Effects Of Corporate Values On Fit Within The Organization, Brittney Winters
Person-Corporate Social Responsibility Fit: Considering The Effects Of Corporate Values On Fit Within The Organization, Brittney Winters
Electronic Theses, Projects, and Dissertations
Corporate social responsibility (CSR) is an expanding trend as more organizations have adopted various CSR policies. Due to this, CSR has been a growing topic in Business and Psychology research, especially on the micro-level of CSR’s effects on individual employee outcomes. In this study, we proposed a new sub-dimension of Person-Organization (P-O) fit, such that there’s a Person-CSR (P-CSR) fit: the perceived congruence between an individuals’ values with an organization’s CSR initiatives. We predicted that P-CSR fit would explain additional variance over and beyond P-O fit for organizational outcomes: organizational commitment, organizational identity, job satisfaction, and organizational citizenship behaviors. Further, …
Dispositional Employability And The Relationship To Career Success: A Meta-Analysis, Alisha M. Jasmer
Dispositional Employability And The Relationship To Career Success: A Meta-Analysis, Alisha M. Jasmer
Electronic Theses, Projects, and Dissertations
This meta-analysis focuses on the willingness to work aspect of the RAW model of employability of Hogan et al. (2009), in relationship to career success. Willingness to work (W) can be defined as favorably disposed to work hard and take initiative at one’s job. The variables I used to structure the W are proactive personality, conscientiousness, work ethic, job involvement, adaptability, and ambition.
I used the Hunter and Schmidt method to analyze the data applying a random effects model. All calculations were conducted in Excel. The overall sample consisted of 100 effect sizes (r) derived from 41 studies. The total …
Building A Community Of Practice For English-As-A-Foreign Language Tutors During Private Tutoring, Doaa S. Mahrous
Building A Community Of Practice For English-As-A-Foreign Language Tutors During Private Tutoring, Doaa S. Mahrous
Electronic Theses, Projects, and Dissertations
The creation of a community of practice of tutors--a shared practice among a group of people who share the same domain--enables second-language learners to facilitate their acquisition of English by embracing new learning strategies while they learn the target language. The community of tutors’ perspective allows for the incorporation of the individual’s particular second-language-acquisition needs and goals. This presentation presents a proposed study that took place at the Yasuda Center at California State University, San Bernardino in the summer of 2015. Students in the English Language Program housed in the College of Extended Learning were asked to participate in tutoring …
Monitoring And Analysis Of Erosion And Deposition In The Desert Knolls Wash, Samson Rajan Lamech
Monitoring And Analysis Of Erosion And Deposition In The Desert Knolls Wash, Samson Rajan Lamech
Electronic Theses, Projects, and Dissertations
The goal of this Project was to monitor and measure ongoing changes in the geomorphology of one reach of The Desert Knolls Wash (DKW), an unstable ephemeral stream channel in Apple Valley, California. The DKW flows into the Mojave River just upstream of the Upper Mojave Narrows, a historic site that has been the focus of recorded human activity in the region since 1776.
Two surveyed cross-sections were established for three periods of time between November 2012 and November 2014 which were to be re-measured after significant flows. However, owing to the persistent drought in the location, there were no …
“God Hates Fags”—The Use Of Religion As Justification For Prejudice Towards Homosexuals, Michelle S. Fabros
“God Hates Fags”—The Use Of Religion As Justification For Prejudice Towards Homosexuals, Michelle S. Fabros
Electronic Theses, Projects, and Dissertations
The Westboro Baptist Church and Phelps family are notorious for their signs proclaiming anti-homosexuality epithets such as “God Hates Fag,” and references to Biblical verses to revile homosexuality (e.g., Romans 1:24-27). Although the homonegativity bias that Westboro patrons and many traditional Christians express is often understood as being rooted in religion, I proposed the possibility that religion can be a justification rather than source of homonegativity. That is, although religion typically is seen as the source of prejudice towards LGBT+ people, I argued that this relationship might work in reverse. I examined under which conditions this “reverse” phenomena might occur …
Autonomous Weapon Systems: A Brief Survey Of Developmental, Operational, Legal, And Ethical Issues, Jeffrey L. Caton
Autonomous Weapon Systems: A Brief Survey Of Developmental, Operational, Legal, And Ethical Issues, Jeffrey L. Caton
Books, Monographs & Collaborative Studies
What does the Department of Defense hope to gain from the use of autonomous weapon systems (AWS)? This Letort Paper explores a diverse set of complex issues related to the developmental, operational, legal, and ethical aspects of AWS. It explores the recent history of the development and integration of autonomous and semi-autonomous systems into traditional military operations. It examines anticipated expansion of these roles in the near future as well as outlines international efforts to provide a context for the use of the systems by the United States. As these topics are well-documented in many sources, this Paper serves as …
Lethal And Legal? The Ethics Of Drone Strikes, Shima D. Keene Dr.
Lethal And Legal? The Ethics Of Drone Strikes, Shima D. Keene Dr.
Books, Monographs & Collaborative Studies
While supporters claim that drone warfare is not only legal but ethical and wise, others have suggested that drones are prohibited weapons under International Humanitarian Law (IHL) because they cause, or have the effect of causing, indiscriminate killings of civilians, such as those in the vicinity of a targeted person. The main legal justification made by the Barack Obama Administration for the use of armed drones is self-defense. However, there is ambiguity as to whether this argument can justify a number of recent attacks by the United States. In order to determine the legality of armed drone strikes, other factors …
Enabling Others To Win In A Complex World: Maximizing Security Force Assistance Potential In The Regionally Aligned Brigade Combat Team, Liam P. Walsh Cpt (P)
Enabling Others To Win In A Complex World: Maximizing Security Force Assistance Potential In The Regionally Aligned Brigade Combat Team, Liam P. Walsh Cpt (P)
Books, Monographs & Collaborative Studies
Beginning in 2013, the U.S. Army began an effort to “engage regionally and respond globally.” A central tenant of this strategy, building upon National strategic guidance, is the necessity to build partner capacity. Army units, through the regionally aligned forces concept, may find themselves conducting security force assistance (SFA) missions across the globe as a means to achieve these ways. However, after examining the Army’s SFA mission in Operation IRAQI FREEDOM from 2003-10, it becomes apparent that institutional and organizational shortcomings plagued the Army’s initial efforts in this critical aspect of the campaign. Many of these shortcomings remain in the …
Reforming U.S. Export Controls Reforms: Advancing U.S. Army Interests, Richard Weitz Dr.
Reforming U.S. Export Controls Reforms: Advancing U.S. Army Interests, Richard Weitz Dr.
Books, Monographs & Collaborative Studies
The U.S. defense export system needs further major reforms to reduce inefficiencies and weaknesses. Although the International Traffic in Arms Regulations (ITAR) do help prevent potential foreign adversaries from using U.S. arms against the United States and its allies, the Regulations, as enforced, can weaken U.S. national security in other important ways. For example, by excessively impeding defense exports, the ITAR makes it more difficult for U.S. firms to sustain core U.S. defense technological and industrial advantages, decreases U.S. military interoperability with allies that purchase ITAR-free weapons from other sources, and generates other undesirable effects for the U.S. Army and …
Validating Side Scan Sonar As A Fish Survey Tool, Michael A. Bollinger
Validating Side Scan Sonar As A Fish Survey Tool, Michael A. Bollinger
Theses and Dissertations
Hydroacoustic methods can be used to answer a variety of questions regarding fish populations and behavior. In this study, side scan sonar methodology was developed to quantify abundance and biomass and compared to established visual observation methods on SCUBA over artificial reef structures in the western Gulf of Mexico. Side scan sonar methods were equivalent to SCUBA surveys for measuring fish abundance over the same reef areas, however, abundances were significantly higher when the larger area sampled by side scan was utilized. Side scan sonar methods were also more time efficient than SCUBA, ROV and long line fishing methods (66.7%, …
Pressure Field Estimation Using Particle Image Velocimetry, Jean O. Calzada
Pressure Field Estimation Using Particle Image Velocimetry, Jean O. Calzada
Theses and Dissertations
In recent years, scientist and engineers have shown the advantages created by using the Particle Image Velocimetry (PIV) method as flow diagnostic tool to characterize instantaneous velocity fields. One of the important benefits is found on its non-intrusive nature, this leads to accurate velocity fields. From the velocity field obtained by PIV important quantities can be derived, such as pressure and vorticity. The present study, uses PIV data of an incompressible turbulent pulsed jet to determine the pressure field associated with the flow field. The pressure is calculated by using the averaged velocity field along with three different fundamental equation: …
Molecular Modeling And Mutational Mapping Of The Gpr119 Binding Site, Shane M. Askar
Molecular Modeling And Mutational Mapping Of The Gpr119 Binding Site, Shane M. Askar
Theses and Dissertations
GPR119 receptor’s biological role in regulating glucose homeostasis has been studied extensively. Results in the scientific literature indicate that, when activated, GPR119 releases insulin in a glucose dependent manner. Currently the 3D structure of GPR119 has not been resolved.
The goal of this research is to use a combination of homology modeling and ligand docking studies to predict the binding mode of GPR119 ligands. Amino acids implicated to have direct interactions with docked ligands will further be assessed experimentally for their roll in binding and activation of GPR119. Our results indicate that residues W2656.48 and R813.28 are likely to be …
Liberty, Equality, Indebtedness: Thomas Jefferson, John Adams And The Problem Of Debt In A Revolutionary Age, Martha Salazar Cantu
Liberty, Equality, Indebtedness: Thomas Jefferson, John Adams And The Problem Of Debt In A Revolutionary Age, Martha Salazar Cantu
Theses and Dissertations
In this thesis I examine how the issue of debt contributed to the political tensions between the New England region and the Chesapeake region during the Revolutionary Age. The merging of the two regions’ economies into one federal union caused political divisions, which remained beyond the period of the Early Republic. Examining the cultural attitudes of each region towards debt provides a better understanding of the political problems between these two regions. The integration of the consignment culture of the Southern states with the Puritan ethic of the New England states caused economic difficulties for the young Republic. The research …
Examination Of The Chagas Disease Vector, Triatoma Gerstackeri, In The Lower Rio Grande Valley, Alfredo Flores
Examination Of The Chagas Disease Vector, Triatoma Gerstackeri, In The Lower Rio Grande Valley, Alfredo Flores
Theses and Dissertations
Chagas disease is caused by the protozoan parasite Trypanosoma cruzi, which is carried by an insect vector of the family Reduviidae, and of the subfamily Triatomina. The species Triatoma gerstaeckeri is identified as the primary vector of T. cruzi within the Rio Grande Valley. Species of Triatoma gerstaeckeri were trapped in La Sal del Rey National Refuge in 2012 and 2013.
Data indicates a seasonal dispersal pattern of activity for T. gerstaeckeri. Optimal time of capture was between 1-2 hours after sunset. Different methods were utilized to determine the best combination of lures. Results indicate that the UV-light alone is …
Decomposition And Nitrogen Dynamics Of Turtle Grass (Thalassia Testudinum) In A Subtropical Estuarine System, Monica Delgado
Decomposition And Nitrogen Dynamics Of Turtle Grass (Thalassia Testudinum) In A Subtropical Estuarine System, Monica Delgado
Theses and Dissertations
Seagrass beds are pivotal in the functioning of coastal ecosystems in terms of productivity, organic matter turnover and nutrient cycling. Aiming to document decay and nitrogen (N) dynamics of turtle grass (Thalassia testudinum) in a subtropical estuarine system, decomposition patterns of leaves and rhizomes were characterized and compared. Nitrogen usage during decomposition of tissues, and of live tissues and epiphytes growing on live leaves, was also quantified and compared. Stable isotope ratios allowed tracing N within the seagrass bed, following N incorporation into seagrass tissues from the surrounding media (water, sediment). Leaves had a higher N content and decomposed at …