Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (27723)
- Earth Sciences (16205)
- Geology (13582)
- Life Sciences (4171)
- Engineering (3988)
-
- Education (3680)
- Computer Sciences (3480)
- Social and Behavioral Sciences (3203)
- Environmental Sciences (2802)
- Chemistry (1744)
- Plant Sciences (1714)
- Soil Science (1682)
- Medicine and Health Sciences (1642)
- Agronomy and Crop Sciences (1553)
- Agricultural Science (1550)
- Plant Biology (1547)
- Plant Pathology (1515)
- Weed Science (1507)
- Physics (1352)
- Mathematics (1312)
- Arts and Humanities (1202)
- Sustainability (1009)
- Computer Engineering (986)
- Electrical and Computer Engineering (960)
- Ecology and Evolutionary Biology (793)
- Artificial Intelligence and Robotics (790)
- Business (785)
- Higher Education (764)
- Statistics and Probability (663)
- Science and Mathematics Education (653)
- Institution
-
- Western Michigan University (13277)
- University of Kentucky (1843)
- University of Nebraska - Lincoln (958)
- University of Memphis (871)
- TÜBİTAK (709)
-
- Singapore Management University (662)
- San Jose State University (642)
- Old Dominion University (476)
- Loyola Marymount University and Loyola Law School (472)
- Association of Arab Universities (432)
- City University of New York (CUNY) (396)
- Louisiana State University (389)
- University of South Carolina (384)
- Chulalongkorn University (380)
- University of South Florida (356)
- Utah State University (349)
- University of Texas Rio Grande Valley (343)
- University of New Mexico (338)
- Missouri University of Science and Technology (335)
- China Simulation Federation (315)
- University of Arkansas, Fayetteville (310)
- University of Plymouth (307)
- Walden University (305)
- Illinois Math and Science Academy (292)
- Portland State University (275)
- University of Central Florida (265)
- Air Force Institute of Technology (238)
- New Jersey Institute of Technology (236)
- Kennesaw State University (231)
- University of Mississippi (231)
- Keyword
-
- COVID-19 (326)
- Machine learning (282)
- University of Memphis. (226)
- Education (215)
- Deep learning (203)
-
- Memphis State University. (200)
- Mathematics (192)
- Undergraduate (175)
- Machine Learning (164)
- Climate change (134)
- STEM (126)
- Technical Reports (110)
- UTEP Computer Science Department (110)
- Artificial intelligence (107)
- Technology (106)
- Deep Learning (101)
- Simulation (98)
- Optimization (95)
- Sustainability (91)
- Higher education (89)
- Physics (83)
- Georgia Southern University (81)
- Science (81)
- Artificial Intelligence (77)
- Alfalfa (73)
- Pandemic (73)
- Humans (72)
- Statistics (72)
- Engineering (71)
- Professional development (71)
- Publication
-
- Legacy Scout Tickets from Pure Oil Company (11044)
- Thin Sections (2154)
- IGC Proceedings (1977-2023) (1504)
- Theses and Dissertations (1092)
- Faculty Publications (558)
-
- Research Collection School Of Computing and Information Systems (546)
- Library Philosophy and Practice (e-journal) (472)
- Electronic Theses and Dissertations (346)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (339)
- Bulletins (335)
- Dissertations (316)
- Journal of System Simulation (315)
- Walden Dissertations and Doctoral Studies (282)
- Neutrosophic Sets and Systems (212)
- Coal Geology & Exploration (204)
- Turkish Journal of Electrical Engineering and Computer Sciences (202)
- Silver Bow Creek/Butte Area Superfund Site (195)
- USF Tampa Graduate Theses and Dissertations (194)
- Turkish Journal of Mathematics (192)
- School of Engineering, Computing and Mathematics (173)
- Mansoura Engineering Journal (169)
- Electronic Theses and Dissertations, 2020-2023 (168)
- Turkish Journal of Chemistry (167)
- Theses (166)
- Publications and Research (164)
- Graduate Theses and Dissertations (160)
- Honors Theses (150)
- Information Sciences Letters (150)
- Michigan Reading Journal (148)
- Ralph J. Faudree (147)
- Publication Type
Articles 1111 - 1140 of 42405
Full-Text Articles in Entire DC Network
Puzzling Failure In Life: A User's Manual/La Vie Mode D'Emploi, William Lambert
Puzzling Failure In Life: A User's Manual/La Vie Mode D'Emploi, William Lambert
Fall Student Research Symposium 2021
From its founding by the poet Raymond Queneau and writer François Le Lionnais in 1960, the French OuLiPo sought to create new literary structures through the introduction of mathematics into the writing process. Among the works generated through the OuLiPian process is La vie mode d’emploi by Georges Perec, a novel of considerable depth describing the lives of residents in an apartment in Paris and weaving throughout numerous themes and leitmotifs. In his preface to the novel, Perec implicitly invites the reader to approach its elements just as they would a puzzle, fitting them together in a ludic search for …
Understanding How Changes In Precipitation Intensity Will Affect Vegetation In The Western U.S., Cristina Chirvasa
Understanding How Changes In Precipitation Intensity Will Affect Vegetation In The Western U.S., Cristina Chirvasa
Fall Student Research Symposium 2021
Precipitation events are becoming more intense as the atmosphere warms, but it remains unclear how precipitation intensification will affect plant growth in arid and semiarid ecosystems. There is conflicting evidence suggesting that larger precipitation events may either increase or decrease plant growth. Here, we report the growth responses of herbaceous and woody plants to experimental manipulations of precipitation intensity in a cold, semi-arid ecosystem in Utah, USA. In this experiment, precipitation was collected and redeposited as fewer, larger events with total annual precipitation kept constant across treatments. Results from the first two growing seasons revealed that more intense events ‘pushed’ …
Climate Change Impacts On Atmospheric Ammonia And Implications For Human Health, Casey Olson, Connor Snow, Bridger Jorgensen
Climate Change Impacts On Atmospheric Ammonia And Implications For Human Health, Casey Olson, Connor Snow, Bridger Jorgensen
Fall Student Research Symposium 2021
According to national data Cache Valley has the highest concentrations of atmospheric ammonia in the nation. This study aims to answer the questions of whether climate variables and events such as precipitation, averaged winds, geopotential height, and teleconnections can be used to predict the behavior of pollutants and how human biology is potentially affected. Data from the Utah Climate Center shows that the 3rd yearly quartile has the highest levels of airborne ammonia due to the high levels of fertilizer use and livestock emissions in the farming industry in Cache Valley. After data analysis, there seems to be a connection …
Scattering Of Light From Periodic Conducting Nanostructures, Wesley Mills
Scattering Of Light From Periodic Conducting Nanostructures, Wesley Mills
Fall Student Research Symposium 2021
Light scattered from periodic structures generates numerous fascinating phenomena, from diffraction patterns to the black patches on some butterfly wings. The simple scalar wave formulation based on Huygens principle can account for many diffraction and radiation patterns in the far field. However, when the structure dimensions are smaller than the wavelength, light polarization and structure details become important, and the vector formulation based on Maxwell's equations is necessary. I will present an analytic calculation and a numerical simulation on light scattering from two-dimensional conducting grids to model the reflectance from butterfly wings and broadband absorption structures made from carbon nanotube …
Mechanism Of Thermal Protein Aggregation: Experiments And Molecular Dynamics Simulations On The High-Temperature Behavior Of Myoglobin., Yuen Ki Ng, Nastaran N Tajoddin, Pablo M Scrosati, Lars Konermann
Mechanism Of Thermal Protein Aggregation: Experiments And Molecular Dynamics Simulations On The High-Temperature Behavior Of Myoglobin., Yuen Ki Ng, Nastaran N Tajoddin, Pablo M Scrosati, Lars Konermann
Chemistry Publications
Proteins that encounter unfavorable solvent conditions are prone to aggregation, a phenomenon that remains poorly understood. This work focuses on myoglobin (Mb) as a model protein. Upon heating, Mb produces amorphous aggregates. Thermal unfolding experiments at low concentration (where aggregation is negligible), along with centrifugation assays, imply that Mb aggregation proceeds via globally unfolded conformers. This contrasts studies on other proteins that emphasized the role of partially folded structures as aggregate precursors. Molecular dynamics (MD) simulations were performed to gain insights into the mechanism by which heat-unfolded Mb molecules associate with one another. A prerequisite for these simulations was the …
Responses Of Benthic Calcifying Algae To Ocean Acidification Differ Between Laboratory And Field Settings, Heather N. Page, Keisha D. Bahr, Tyler Cyronak, Elizabeth B. Jewett, Maggie D. Johnson, Sophie J. Mccoy
Responses Of Benthic Calcifying Algae To Ocean Acidification Differ Between Laboratory And Field Settings, Heather N. Page, Keisha D. Bahr, Tyler Cyronak, Elizabeth B. Jewett, Maggie D. Johnson, Sophie J. Mccoy
Marine & Environmental Sciences Faculty Articles
Accurately predicting the effects of ocean and coastal acidification on marine ecosystems requires understanding how responses scale from laboratory experiments to the natural world. Using benthic calcifying macroalgae as a model system, we performed a semi-quantitative synthesis to compare directional responses between laboratory experiments and field studies. Variability in ecological, spatial, and temporal scales across studies, and the disparity in the number of responses documented in laboratory and field settings, make direct comparisons difficult. Despite these differences, some responses, including community-level measurements, were consistent across laboratory and field studies. However, there were also mismatches in the directionality of many responses …
2021 December 9 - Academic Council Agenda And Minutes, Academic Council, East Tennessee State University
2021 December 9 - Academic Council Agenda And Minutes, Academic Council, East Tennessee State University
Academic Council Agenda and Minutes
No abstract provided.
Machine Learning And Radiomic Features To Predict Overall Survival Time For Glioblastoma Patients, Lina Chato, Shahram Latifi
Machine Learning And Radiomic Features To Predict Overall Survival Time For Glioblastoma Patients, Lina Chato, Shahram Latifi
Electrical & Computer Engineering Faculty Research
Glioblastoma is an aggressive brain tumor with a low survival rate. Understanding tumor behavior by predicting prognosis outcomes is a crucial factor in deciding a proper treatment plan. In this paper, an automatic overall survival time prediction system (OST) for glioblastoma patients is developed on the basis of radiomic features and machine learning (ML). This system is designed to predict prognosis outcomes by classifying a glioblastoma patient into one of three survival groups: short-term, mid-term, and long-term. To develop the prediction system, a medical dataset based on imaging information from magnetic resonance imaging (MRI) and non-imaging information is used. A …
Newgrange Skyscape In Stellarium, Frank Prendergast
Newgrange Skyscape In Stellarium, Frank Prendergast
Articles
Newgrange Skyscape in Stellarium is a new customised landscape planetarium model giving the user the unique ability to interrogate the dynamic sky above the Boyne Valley on any date of interest during the hours of daylight or darkness. Archaeological, astronomical and topographical points of interest are labelled in the model and visible even during the hours of darkness. These are summarily described in a short gazetteer appended at the end of the instruction document to encourage further exploration of the wonderful heritage found in the Boyne Valley and beyond.
Watch on Youtube: https://www.youtube.com/watch?app=desktop&v=aGPsVGBXkY4
Watch on Vimeo: https://vimeo.com/493351576
Memphis State University Recruitment Pamphlet, Circa 1971
Memphis State University Recruitment Pamphlet, Circa 1971
Documents
Student recruitment pamphlet of Memphis State University, Memphis, Tennessee, circa 1971.
Violation Of Magnetic Flux Conservation By Superconducting Nanorings, Iris Mowgood, Gurgen Melkonyan, Rajendra Dulal, Serafim Teknowijoyo, Sara Chahid, Armen Gulian
Violation Of Magnetic Flux Conservation By Superconducting Nanorings, Iris Mowgood, Gurgen Melkonyan, Rajendra Dulal, Serafim Teknowijoyo, Sara Chahid, Armen Gulian
Mathematics, Physics, and Computer Science Faculty Articles and Research
The behavior of magnetic flux in the ring-shaped finite-gap superconductors is explored from the view-point of the flux-conservation theorem which states that under the variation of external magnetic field "the magnetic flux through the ring remains constant" (see, e.g., [L.D. Landau and E.M. Lifshitz, Electrodynamics of Continuos Media, vol. 8 (New York, Pergamon Press, 1960), Section 42]). Our results, based on the time-dependent Ginzburg-Landau equations and COMSOL modeling, made it clear that in the general case, this theorem is incorrect. While for rings of macroscopic sizes the corrections are small, for micro and nanorings they become rather substantial. The physical …
Exploring The Impact Of Social Influence Mechanisms And Network Density On Societal Polarization, Justin Mittereder
Exploring The Impact Of Social Influence Mechanisms And Network Density On Societal Polarization, Justin Mittereder
Departmental Honors & Graduate Capstone Projects
I present an agent-based model, inspired by the opinion dynamics
(OD) literature, to explore the underlying behaviors that may induce
societal polarization. My agents interact on a social network, in which
adjacent nodes can influence each other, and each agent holds an array
of continuous opinion values (on a 0-1 scale) on a number of separate
issues. I use three measures as a proxy for the virtual society’s “po-
larization:” the average assortativity of the graph with respect to the
agents’ opinions, the number of non-uniform issues, and the number
of distinct opinion buckets in which agents have the same …
Non-Linear Optical Characterization Of Stressed Materials, Kaylee N. Rellaford
Non-Linear Optical Characterization Of Stressed Materials, Kaylee N. Rellaford
Theses and Dissertations
Interactions between materials, their surfaces, and applied stresses are involved in every man-made construction in the world. Therefore, finding ways to interact without altering inherent properties of materials is of great interest. Surface spectroscopies, including second harmonic generation (SHG) and sum frequency generation (SFG), are inherently noninvasive testing methods. Both SHG and SFG are well-developed techniques that can be used in various applications including the characterization of material state. Both of these techniques allow for a noninvasive analysis of various materials, such as metals and polymers. We have used SHG as a method to characterize the change in signal strength …
A Simplified Stress Analysis Of Functionally Graded Beams And Influence Of Material Function On Deflection, Elias Ali
Faculty Scholarship
This paper aims at providing a simplified analytical solution for functionally graded beam stress analysis and optimized material gradation on the beam deflection. The power-law (P-FGM) and exponential (E-FGM) material functions were considered for an exact solution of the normal and shear stress distributions across the beam thickness. Optimization of material function on the FGM beam deflection, which is new of its kind, was also investigated considering both simply supported and cantilever beams. It was observed that the non-dimensional normal stress and shear stress are independent of the elastic moduli values of the constituent materials but rather depends on both …
One Story, Two Authors And Seven Layers, Edwin B. Smith
One Story, Two Authors And Seven Layers, Edwin B. Smith
University of Mississippi News
Gregg Davidson's 'The Manifold Beauty of Genesis One' melds scholarship with faith
Campus Guide, Memphis State University, Circa 1971
Campus Guide, Memphis State University, Circa 1971
Documents
Campus guide of Memphis State University, Memphis, Tennessee, circa 1971.
Defects Analysis And Root Cause Robustness Of Product Labels Of An Acaricide Product In East Africa, Moses Okal Ogodo, Z Ekeocha, S Byrn, K Clase
Defects Analysis And Root Cause Robustness Of Product Labels Of An Acaricide Product In East Africa, Moses Okal Ogodo, Z Ekeocha, S Byrn, K Clase
BIRS Africa Technical Report Papers
This project aimed at investigating online damages of packaging materials generated during production because of imperfectness of production processes. These online damages may lead to upsurge in production cost and/or market returns, causing the company to experience losses and even damage its reputation. Data on online damages were collected for 20ml, 40ml and 100ml labels of an acaricide product for the period between July 2018 and June 2019 and statistically analyzed. Investigation was done on the causes of online damages, then corrective and preventive actions carried out. Analysis of online damages of labels of the three pack sizes revealed a …
The Montclarion, December 9, 2021, The Montclarion
The Montclarion, December 9, 2021, The Montclarion
The Montclarion
Student Newspaper of Montclair State University
Autonomous Control And Signal Acquisition System, Rion Cadell Krampe
Autonomous Control And Signal Acquisition System, Rion Cadell Krampe
Honors College Theses
Our goal is to continue a previous teams project to build a NDE autonomous control and signal acquisition system that is more precise, more customizable with both code and mechanical parts, and cheaper than a similar system bought by the school. This goal has two stages to it. First, to repair the system from considerable damage it received during transportation. Secondly, to continue designing and developing the system to make considerable progress towards the goal of a fully functional NDE system. Along with making progress we must consider the team after us and create an easy stepping off point for …
Proquest Tdm Studio: A Text And Data Mining Solution, Anamika Megwalu, Anne Marie Engelsen
Proquest Tdm Studio: A Text And Data Mining Solution, Anamika Megwalu, Anne Marie Engelsen
Faculty Research, Scholarly, and Creative Activity
TDM Studio is an integrated platform offered by ProQuest for data and text mining. TDM stands for text and data mining. This cloud-based, all-in-one innovative product is designed to offer researchers a clean interface with rights-cleared content, Jupyter notebook, and data visualization tools. As a result, researchers can now search Pro-Quest databases, create large datasets, import data to Jupyter notebook for analysis, and download results within a day.
Error Propagation And Algorithmic Design Of Contour Integral Eigensolvers With Applications To Fiber Optics, Benjamin Quanah Parker
Error Propagation And Algorithmic Design Of Contour Integral Eigensolvers With Applications To Fiber Optics, Benjamin Quanah Parker
Dissertations and Theses
In this work, the finite element method and the FEAST eigensolver are used to explore applications in fiber optics. The present interest is in computing eigenfunctions u and propagation constants β satisfing [sic] the Helmholtz equation Δu + k2n2u = β2u. Here, k is the freespace wavenumber and n is a spatially varying coefficient function representing the refractive index of the underlying medium. Such a problem arises when attempting to compute confinement losses in optical fibers that guide laser light. In practice, this requires the computation of functions u referred to as …
Late Cretaceous Paleoceanographic Evolution And The Onset Of Cooling In The Santonian At Southern High Latitudes (Iodp Site U1513, Se Indian Ocean), Maria Rose Petrizzo, Kenneth G. Macleod, David K. Watkins, Erik Wolfgring, Brian T. Huber
Late Cretaceous Paleoceanographic Evolution And The Onset Of Cooling In The Santonian At Southern High Latitudes (Iodp Site U1513, Se Indian Ocean), Maria Rose Petrizzo, Kenneth G. Macleod, David K. Watkins, Erik Wolfgring, Brian T. Huber
Department of Earth and Atmospheric Sciences: Faculty Publications
The latest Cenomanian to Santonian sedimentary record recovered at IODP Expedition 369 Site U1513 in the Mentelle Basin (SE Indian Ocean, paleolatitude 60°S at 85 Ma) is studied to interpret the paleoceanographic evolution in the Southern Hemisphere. The planktonic foraminiferal assemblage changes, the depth ecology preferences of different species, and the surface and seafloor temperature inferred from the stable isotopic values measured on foraminiferal tests provide meaningful information to the understanding of the Late Cretaceous climate. The hothouse climate during the Turonian-Santonian, characterized by weak latitudinal temperature gradients and high atmospheric CO2 concentrations, is followed by a progressive cooling …
Modeling Nitrous Oxide Emissions From Large-Scale Intensive Cropping Systems In The Southern Amazon, Ciniro Costa Jr., Gillian L. Galford, Michael T. Coe, Marcia Macedo, Kathijo Jankowski, Christine S. O'Connell, Christopher Neill
Modeling Nitrous Oxide Emissions From Large-Scale Intensive Cropping Systems In The Southern Amazon, Ciniro Costa Jr., Gillian L. Galford, Michael T. Coe, Marcia Macedo, Kathijo Jankowski, Christine S. O'Connell, Christopher Neill
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Nitrogen (N) fertilizer use is rapidly intensifying on tropical croplands and has the potential to increase emissions of the greenhouse gas, nitrous oxide (N2O). Since about 2005 Mato Grosso (MT), Brazil has shifted from single-cropped soybeans to double-cropping soybeans with maize, and now produces 1.5% of the world's maize. This production shift required an increase in N fertilization, but the effects on N2O emissions are poorly known. We calibrated the process-oriented biogeochemical DeNitrification-DeComposition (DNDC) model to simulate N2O emissions and crop production from soybean and soybean-maize cropping systems in MT. After model validation with …
Nutrient Intake And Dietary Inflammatory Potential In Current And Recovered Anorexia Nervosa, Olivia Patsalos, Bethan Dalton, Christia Kyprianou, Joseph Firth, Nitin Shivappa Mbbs, Mph, Ph.D., James Hébert Scd, Ulrike Schmidt, Hubertus Himmerich
Nutrient Intake And Dietary Inflammatory Potential In Current And Recovered Anorexia Nervosa, Olivia Patsalos, Bethan Dalton, Christia Kyprianou, Joseph Firth, Nitin Shivappa Mbbs, Mph, Ph.D., James Hébert Scd, Ulrike Schmidt, Hubertus Himmerich
Faculty Publications
Anorexia nervosa (AN) is characterised by disrupted and restrictive eating patterns. Recent investigations and meta-analyses have found altered concentrations of inflammatory markers in people with current AN. We aimed to assess nutrient intake in participants with current or recovered AN, as compared to healthy individuals, and explore group differences in dietary inflammatory potential as a possible explanation for the observed alterations in inflammatory markers. We recruited participants with current AN (n = 51), those recovered from AN (n = 23), and healthy controls (n = 49). We used the Food Frequency Questionnaire (FFQ), to calculate a Dietary …
Teacher Education Programs Of Top Pisa Scoring Countries, Stephanie Kafer
Teacher Education Programs Of Top Pisa Scoring Countries, Stephanie Kafer
Honors Projects
This research paper aims to investigate the teacher education programs of four different countries that have consistently scored high on the international Programme for International Student Assessment (PISA) test. This project intends to answer two questions: What locations consistently perform high on the Programme for International Student Assessment (PISA) test? What do the teacher training programs look like for these locations and are there commonalities between programs of different locations? The first question is answered using statistics of PISA scores from the past twenty years and from those statistics, the top four countries that this paper focuses on are Finland, …
Totally P-Adic Numbers Of Degree 4, Melissa Janet Ault
Totally P-Adic Numbers Of Degree 4, Melissa Janet Ault
Theses and Dissertations
In this thesis, we extend results of Emerald Stacy to compute an upper bound on the minimal height of a totally p-adic algebraic integer of degree 4 independent of p. We also compute actual values of the minimal height of a totally p-adic algebraic integer of degree 4 for small primes p.
Wind Turbines Dataset, Pawel Manikowski, David Walker, Matthew Craven
Wind Turbines Dataset, Pawel Manikowski, David Walker, Matthew Craven
Faculty of Science and Engineering Datasets
Dataset associated to the publication "Multi-objective Optimisation of the Benchmark Wind Farm Layout Problem". Citation Manikowski, Pawel et al. (2021). Wind Turbines Dataset. PEARL Research Repository https://doi.org/10.24382/6jkb-4z32
Pengaruh Bahan Organik Terhadap Kesuburan Tanah Serta Pertumbuhan Dan Fisiologi Tanaman Kakao Muda Hasil Transplanting Di Tanah Inceptisol, Santi Rosniawaty, Rija Sudirja, Mira Ariyanti, Syariful Mubarok, Agus Wahyudin
Pengaruh Bahan Organik Terhadap Kesuburan Tanah Serta Pertumbuhan Dan Fisiologi Tanaman Kakao Muda Hasil Transplanting Di Tanah Inceptisol, Santi Rosniawaty, Rija Sudirja, Mira Ariyanti, Syariful Mubarok, Agus Wahyudin
Jurnal Kultivasi
Penanaman bibit kakao pada tanah inceptisol memiliki beberapa kendala, salah satunya adalah bahan organik rendah. Peningkatan pertumbuhan tanaman kakao pada awal tanam dapat dilakukan dengan pemberian bahan organik. Saat ini terdapat bahan organik berbentuk cair, namun pengaruhnya terhadap kakao belum menghasilkan belum diketahui, karena pada umumnya bahan organik yang digunakan pada tanaman kakao berbentuk padat. Tujuan penelitian ini untuk melihat pengaruh bahan organik berbeda (asam humat dan pupuk kotoran sapi) terhadap kesuburan tanah, pertumbuhan, dan fisiologi tanaman kakao belum menghasilkan. Percobaan dilakukan pada bulan Januari sampai Desember 2017 di kebun percobaan Fakultas Pertanian, Universitas Padjadjaran, Jatinangor. Rancangan percobaan yang digunakan …
Element Contamination In Port Everglades – Preparing For Ecological Impacts, Laura White
Element Contamination In Port Everglades – Preparing For Ecological Impacts, Laura White
All HCAS Student Capstones, Theses, and Dissertations
Port dredging is of economic importance worldwide but its impacts to the marine environment through the remobilization of elemental contaminants are not well understood. A massive deepening and widening of Port Everglades, Florida, will begin in 2023. Contaminated sediment disturbed during the dredging process could be released and prove to be harmful to three coral reef tracks located beginning 1.5 miles away from the port. This study focused on identifying and quantifying 14 different trace elements: arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), lead (Pb), manganese (Mn), molybdenum (Mo), nickel (Ni), selenium (Se), tin (Sn), …
Spring Regrowth And Steer Performance On Tifton 85 And Coastal Bermudagrass Pastures Following Sod-Seeding With Ryegrass, G. M. Hill, R. N. Gates
Spring Regrowth And Steer Performance On Tifton 85 And Coastal Bermudagrass Pastures Following Sod-Seeding With Ryegrass, G. M. Hill, R. N. Gates
IGC Proceedings (1977-2023)
Effects of autumn sod-seeded ryegrass (Lolium multiflorum; cv. Passerel; 37.7 kg/ha) in bermudagrass pastures (Cynodon spp.; cv. Coastal and cv. Tifton 85) on grazing steer performance were determined. Ryegrass was sod-seeded in three of six .81 ha pastures of each bermudagrass. Forage height was adjusted to10 cm during spring. Stocking rates were unaffected by ryegrass in Tifton 85 pastures, but they were higher (P < .05) for Tifton 85 than Coastal. Ryegrass increased tester steer average daily gains by 34% (.86 vs .64 kg/day; P < .01), and gain/ha by 26% (387 vs 306 kg/ha; P < .05). Higher stocking rates resulted in 22% more grazing days (515 vs 421 days/ha; P < .01), and 30% higher gain/ha (391 vs 301 kg/ha; P < .05) for Tifton 85 than Coastal pastures. Ryegrass did not affect stocking rates or steer performance on Tifton 85, but it depressed both on Coastal pastures.