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Articles 1651 - 1680 of 15927
Full-Text Articles in Physical Sciences and Mathematics
Analytical Treatment Of The Interaction Quench Dynamics Of Two Bosons In A Two-Dimensional Harmonic Trap, G. Bougas, Simeon I. Mistakidis, P. Schmelcher
Analytical Treatment Of The Interaction Quench Dynamics Of Two Bosons In A Two-Dimensional Harmonic Trap, G. Bougas, Simeon I. Mistakidis, P. Schmelcher
Physics Faculty Research & Creative Works
We Investigate The Quantum Dynamics Of Two Bosons, Trapped In A Two-Dimensional Harmonic Trap, Upon Quenching Arbitrarily Their Interaction Strength And Thereby Covering The Entire Energy Spectrum. Utilizing The Exact Analytical Solution Of The Stationary System, We Derive A Closed Analytical Form Of The Expansion Coefficients Of The Time-Evolved Two-Body Wave Function, Whose Dynamics Is Determined By An Expansion Over The Postquench Eigenstates. The Emergent Dynamical Response Of The System Is Analyzed In Detail By Inspecting Several Observables Such As The Fidelity, The Reduced One-Body Densities, The Radial Probability Density Of The Relative Wave Function In Both Real And Momentum …
The Total Syntheses Of Jbir-94 And Two Synthetic Analogs And Their Cytotoxicities Against A549 (Ccl-185) Human Small Lung Cancer Cells, Cathy L. Mangum, Mica B. Munford, Alyssa Sam, Sandra K. Young, Jeremy T. Beales, Yagya Prasad Subedi, Chad D. Mangum, Tanner J. Allen, Miranda S. Liddell, Andrew I. Merrell, Diana I. Saavedra, Becky L. Williams, Nicole Evans, Joseph L. Beales, Mike A. Christiansen
The Total Syntheses Of Jbir-94 And Two Synthetic Analogs And Their Cytotoxicities Against A549 (Ccl-185) Human Small Lung Cancer Cells, Cathy L. Mangum, Mica B. Munford, Alyssa Sam, Sandra K. Young, Jeremy T. Beales, Yagya Prasad Subedi, Chad D. Mangum, Tanner J. Allen, Miranda S. Liddell, Andrew I. Merrell, Diana I. Saavedra, Becky L. Williams, Nicole Evans, Joseph L. Beales, Mike A. Christiansen
Chemistry and Biochemistry Faculty Publications
We here disclose the total syntheses of the natural polyphenol JBIR-94 and two nonnatural analogs, whose structures are of interest for their bioactivity potential as radical scavengers. Although we initially attempted this by dually acylating both of putrecine’s amine nitrogens in a single pot, our endeavors with this method (which has been successfully reported by other groups) proved ineffectual. We accordingly opted for the lengthier approach of acylating each amine individually, which gratuitously prevailed and also aligns with separate literature precedent. Moreover, we here share our analysis of these target compounds’ cytotoxicities and IC50 values against A549 (CCL-185) human …
An Efficient Viologen-Based Electron Donor To Nitrogenase, Artavazd Badalyan, Zhi-Yong Yang, Bo Hu, Jian Luo, Maowei Hu, T. Leo Liu, Lance C. Seefeldt
An Efficient Viologen-Based Electron Donor To Nitrogenase, Artavazd Badalyan, Zhi-Yong Yang, Bo Hu, Jian Luo, Maowei Hu, T. Leo Liu, Lance C. Seefeldt
Chemistry and Biochemistry Faculty Publications
Nitrogenase catalyzes the reduction of N2 to NH3, supporting all biological nitrogen fixation. Electron donors to this enzyme are ferredoxin or flavodoxin (in vivo) and sodium dithionite (in vitro). Features of these electron donors put a limit on spectrophotometric studies and electrocatalytic applications of nitrogenase. Although it is common to use methyl viologen as an electron donor for many low-potential oxidoreductases, decreased nitrogenase activity is observed with an increasing concentration of methyl viologen, limiting its utility under many circumstances. In this work, we suggest that this concentration-dependent decrease in activity can be explained …
Spatiotemporal Analysis Of Lake Water Quality Indicators On Small Lakes, Lake Bloomington And Evergreen Lake In Central Illinois, Using Satellite Remote Sensing, Gare Ambrose-Igho
Spatiotemporal Analysis Of Lake Water Quality Indicators On Small Lakes, Lake Bloomington And Evergreen Lake In Central Illinois, Using Satellite Remote Sensing, Gare Ambrose-Igho
Theses and Dissertations
This research explores the use of Sentinel-2 satellite to determine the spatiotemporal patterns of lake water quality indicators (e.g. chlorophyll a) in Lake Bloomington and Evergreen Lake. Lake water quality issues related to algal blooms is a serious problem in basins with abundant agricultural lands causing harmful effects to freshwater ecosystems such as pollution of beaches, taste and odor problems in drinking water, depletion of oxygen levels causing fish kills and the issue of water exceeding safe drinking water standards. Developing monitoring techniques using various water quality indicators of algal blooms is crucial. In this project, remote sensing and field …
Effects Of Reservoir Conditions And Trace Co-Contaminant Gases On Geological Carbon Sequestration, Ram Kumar
Effects Of Reservoir Conditions And Trace Co-Contaminant Gases On Geological Carbon Sequestration, Ram Kumar
USF Tampa Graduate Theses and Dissertations
Geological carbon sequestration in a saline formation is a promising technology for large-scale carbon dioxide (CO2) mitigation. Several factors such as temperature, pressure, salinity, hydraulic conductivity, and mineralogy of a formation affect the CO2 sequestration in saline formations. These factors can vary widely depending upon the type of formation or the degree of heterogeneity within a formation. In addition to these properties of the repositories, the CO2-rich flue gas streams captured from point sources often contains small amounts of impurities such as sulfur oxides (SOx) and nitrogen oxides (NOx), which may have serious implications on the chemistry of the repositories …
Evaluating Conversation Agent Impact On Student Experience In A Distance Education Course, Grover Walters
Evaluating Conversation Agent Impact On Student Experience In A Distance Education Course, Grover Walters
USF Tampa Graduate Theses and Dissertations
We explore the efficacy of conversation agents operating as an instructional aid in a distance education course. Two aspects of efficacy are considered—conversation agent impact on student perceptions of the experience, and how different design features of the agent affect student perceptions of engagement. Evaluation of the agent is accomplished by collecting data from 24 undergraduate participants separated into random groups. We conduct two rounds of mixedmethod evaluation. Between the two rounds, a modification to the agent occurs based on the outcome of the first evaluation. Findings include limitations related to phrasing and data persistence features of the design that …
Repeat Length Of Patterns On Weaving Products, Zhuochen Liu
Repeat Length Of Patterns On Weaving Products, Zhuochen Liu
Mathematical Sciences Technical Reports (MSTR)
Interlacing strands have been used to create artistic weaving patterns. Repeated patterns form aesthetically pleasing products. This research is a mathematical modeling of weaving products in the real world by using Cellular Automata. The research is conducted by observing the evolution of the model to better understand products in the real world. Specifically, this research focuses on the repeat length of a weaving pattern given the rule of generating it and the configuration of the starting row. Previous studies have shown the range of the repeat length in specific situations. This paper will generalize the precise repeat length in one …
Effect Of Foliar Spray Application Of Zinc Oxide Nanoparticles On Quantitative, Nutritional, And Physiological Parameters Of Foxtail Millet (Setaria Italica L.) Under Field Conditions, Marek Kolenčík, Dávid Ernst, Matej Komár, Martin Šebesta, Martin Urík, Edmund Dobročka, Ivan Černý, Ramakanth Illa, Raghavendra Kanike, Qian Yu, Huan Feng, Denisa Orlová, Gabriela Kratošová
Effect Of Foliar Spray Application Of Zinc Oxide Nanoparticles On Quantitative, Nutritional, And Physiological Parameters Of Foxtail Millet (Setaria Italica L.) Under Field Conditions, Marek Kolenčík, Dávid Ernst, Matej Komár, Martin Šebesta, Martin Urík, Edmund Dobročka, Ivan Černý, Ramakanth Illa, Raghavendra Kanike, Qian Yu, Huan Feng, Denisa Orlová, Gabriela Kratošová
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
It has been shown that the foliar application of inorganic nano-materials on cereal plants during their growth cycle enhances the rate of plant productivity by providing a micro-nutrient source. We therefore studied the effects of foliarly applied ZnO nanoparticles (ZnO NPs) on Setaria italica L. foxtail millet’s quantitative, nutritional, and physiological parameters. Scanning electron microscopy showed that the ZnO NPs have an average particle size under 20 nm and dominant spherically shaped morphology. Energy dispersive X-ray spectrometry then confirmed ZnO NP homogeneity, and X-ray diffraction verified their high crystalline and wurtzite-structure symmetry. Although plant height, thousand grain weight, and grain …
Potentials And Challenges For Egypt To Achieve Blue Growth: An Sdg 14 Perspective, Mamdouh Awad Abdelrahman Shahhat
Potentials And Challenges For Egypt To Achieve Blue Growth: An Sdg 14 Perspective, Mamdouh Awad Abdelrahman Shahhat
World Maritime University Dissertations
No abstract provided.
Harnessing The Potentials Of The Blue Economy For Kenya’S Sustainable Development, Enock Mong'are Okemwa
Harnessing The Potentials Of The Blue Economy For Kenya’S Sustainable Development, Enock Mong'are Okemwa
World Maritime University Dissertations
No abstract provided.
Rating Mechanisms For Sustainability Of Crowdsourcing Platforms, Chenxi Qiu, Anna Squicciarini, Sarah Rajtmajer
Rating Mechanisms For Sustainability Of Crowdsourcing Platforms, Chenxi Qiu, Anna Squicciarini, Sarah Rajtmajer
College of Science & Mathematics Departmental Research
Crowdsourcing leverages the diverse skill sets of large collections of individual contributors to solve problems and execute projects, where contributors may vary significantly in experience, expertise, and interest in completing tasks. Hence, to ensure the satisfaction of its task requesters, most existing crowdsourcing platforms focus primarily on supervising contributors' behavior. This lopsided approach to supervision negatively impacts contributor engagement and platform sustainability.
The Economic Impact Of Low Sulphur Compliance On Future Fuel Cost And Container Freight Rates: A Case Study Of Shanghai-Lagos, Usman Shuaibu
The Economic Impact Of Low Sulphur Compliance On Future Fuel Cost And Container Freight Rates: A Case Study Of Shanghai-Lagos, Usman Shuaibu
World Maritime University Dissertations
No abstract provided.
A Case Study Of The Implementation And Enforcement Of Marpol Annex Vi Sulphur Regulations In Kenya, Annette Wangari Muriithi
A Case Study Of The Implementation And Enforcement Of Marpol Annex Vi Sulphur Regulations In Kenya, Annette Wangari Muriithi
World Maritime University Dissertations
No abstract provided.
Assessing The Limitations Of Integrating Energy And Environmental Standards Into Seaports Of Small Island Developing States, Matthew Kensen
Assessing The Limitations Of Integrating Energy And Environmental Standards Into Seaports Of Small Island Developing States, Matthew Kensen
World Maritime University Dissertations
No abstract provided.
Sustainable Growth Through Value Chain Development In The Blue Economy: A Case Study Of The Port Of Walvis Bay, Tangeni Haimbala
Sustainable Growth Through Value Chain Development In The Blue Economy: A Case Study Of The Port Of Walvis Bay, Tangeni Haimbala
World Maritime University Dissertations
No abstract provided.
Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower
Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower
Mathematics and Statistics Faculty Publications
Partial differential equations (PDEs) are a useful tool for modeling spatiotemporal dynamics of ecological processes. However, as an ecological process evolves, we need statistical models that can adapt to changing dynamics as new data are collected. We developed a model that combines an ecological diffusion equation and logistic growth to characterize colonization processes of a population that establishes long‐term equilibrium over a heterogeneous environment. We also developed a homogenization strategy to statistically upscale the PDE for faster computation and adopted a hierarchical framework to accommodate multiple data sources collected at different spatial scales. We highlighted the advantages of using a …
Environmental Regulation Of Emerging Offshore Oil And Gas Activities In Somalia, Abubakar Mohamud Abubakar
Environmental Regulation Of Emerging Offshore Oil And Gas Activities In Somalia, Abubakar Mohamud Abubakar
World Maritime University Dissertations
No abstract provided.
Assessing Stakeholder Expectations For Marine Spatial Planning In Tonga: Implications For Governance, Hulita Lamasialeva Fa'anunu
Assessing Stakeholder Expectations For Marine Spatial Planning In Tonga: Implications For Governance, Hulita Lamasialeva Fa'anunu
World Maritime University Dissertations
No abstract provided.
Identify Monitoring Needs And Emerging Technology To Support Ecosystem Based Management (Ebm) And Sustainable Blue Growth In Nigerian Ports: Case Study : Lagos Ports (Lagos Pport Complex And Tin Can Island Port Complex), Roland Oladipo Ijabiyi
World Maritime University Dissertations
No abstract provided.
An Impact Assessment Of Illegal Unreported Unregulated (Iuu) Fishing In Central Africa As A Step Towards Sustainability In Africa’S Fishing Industry: Case Study : Cameroon, Noella Njeuyap Mbotiji
An Impact Assessment Of Illegal Unreported Unregulated (Iuu) Fishing In Central Africa As A Step Towards Sustainability In Africa’S Fishing Industry: Case Study : Cameroon, Noella Njeuyap Mbotiji
World Maritime University Dissertations
No abstract provided.
The Implementation Of The Joint Development Of Greater Sunrise Special Regime Under The 2018 Timor Sea Maritime Boundaries Treaty Between Timor-Leste And Australia, Melkiades Laot
World Maritime University Dissertations
No abstract provided.
Emissions Control Investment Policy For The 2020 Sulphur Cap Implemented By Port Of Gothenburg As A Model For The Port Of Mombasa, Luis M. Colmenares, Wachira W. Margaret
Emissions Control Investment Policy For The 2020 Sulphur Cap Implemented By Port Of Gothenburg As A Model For The Port Of Mombasa, Luis M. Colmenares, Wachira W. Margaret
World Maritime University Dissertations
No abstract provided.
Marine Safety And Pollution Prevention From Oil Spills In The Arabian Gulf : A Comparative Study Of Applicable International And Regional Conventions, Khalid Rakan Aldosari
Marine Safety And Pollution Prevention From Oil Spills In The Arabian Gulf : A Comparative Study Of Applicable International And Regional Conventions, Khalid Rakan Aldosari
World Maritime University Dissertations
No abstract provided.
Challenges For The Ratification Of The Hong Kong Convention For The Safe And Environmentally Sound Recycling Of Ships, 2009 In Indonesia, Monica Ajeng Oktaviany
Challenges For The Ratification Of The Hong Kong Convention For The Safe And Environmentally Sound Recycling Of Ships, 2009 In Indonesia, Monica Ajeng Oktaviany
World Maritime University Dissertations
No abstract provided.
Development Of A Holistic Framework For Shipyard Energy Management : A Case Study On Production Facilities And Technology, Morné Irshkin Sinden
Development Of A Holistic Framework For Shipyard Energy Management : A Case Study On Production Facilities And Technology, Morné Irshkin Sinden
World Maritime University Dissertations
No abstract provided.
Stakeholder Engagement In Marine Spatial Planning Of Bangladesh, Mohammad Samsul Mannan
Stakeholder Engagement In Marine Spatial Planning Of Bangladesh, Mohammad Samsul Mannan
World Maritime University Dissertations
No abstract provided.
Developing Safe And Environmentally Sound Ship Recycling In Indonesia, . Irawati
Developing Safe And Environmentally Sound Ship Recycling In Indonesia, . Irawati
World Maritime University Dissertations
No abstract provided.
Wind Propulsion Optimisation And Its Integration With Solar Power, Mphatso Nsanjama Nyanya, Huy Ba Vu
Wind Propulsion Optimisation And Its Integration With Solar Power, Mphatso Nsanjama Nyanya, Huy Ba Vu
World Maritime University Dissertations
No abstract provided.
Ship Energy Efficiency Management Plan: Analysis Of Biofouling Effect On Co2 Emission Performance Of Iraq Non-Trading Fleet, Oudah Salim Mohammed Ali Alshawi, Tsitskishvili Avtandil
Ship Energy Efficiency Management Plan: Analysis Of Biofouling Effect On Co2 Emission Performance Of Iraq Non-Trading Fleet, Oudah Salim Mohammed Ali Alshawi, Tsitskishvili Avtandil
World Maritime University Dissertations
No abstract provided.
Towards Implementing Integrated Coastal Zone Management In The Gambia: Coastal Adaptation To Climate Change And Human Impacts In The High Risk Zone (Cell 6), Lamin Komma
World Maritime University Dissertations
No abstract provided.