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Articles 37321 - 37350 of 39012
Full-Text Articles in Entire DC Network
Ambit Of Multiphase Cfd In Modelling Transport Processes Related To Oil Spill Scenario And Microfluidics, Abhijit Rao
Ambit Of Multiphase Cfd In Modelling Transport Processes Related To Oil Spill Scenario And Microfluidics, Abhijit Rao
LSU Doctoral Dissertations
During the ‘Deepwater Horizon’ accident in the deep sea in 2010, about 4.9 million barrels of oil was released into the Gulf of Mexico, making the spill one of the worst ocean spills in recent times. To mitigate the ill effects of the event on the environment, subsea injection of dispersants was carried out. Dispersant addition lowers the interfacial tension at oil/water interface and presence of local turbulence enhances the droplet disintegration process. The oil droplets contain a plethora of hydrocarbons which are soluble in water. In deep spill scenarios, droplets spend large amounts of time in water column; hence, …
Modeling Two-Phase Flow And Heat Transfer In Polygonal Microchannels, Sai Sashankh Rao
Modeling Two-Phase Flow And Heat Transfer In Polygonal Microchannels, Sai Sashankh Rao
LSU Doctoral Dissertations
Microfluidics is a burgeoning research area with applications ranging from microfluidic cooling to biomolecule synthesis. Here we study two problems to gain an improved understanding of two-phase flow and heat transfer in microfluidic devices. We also study a third problem on boundary layer flow out of theoretical interest. In the first problem, we study the heat and mass transfer in polygonal micro heat pipes under small imposed temperature differences. A micro heat pipe, used in electronics cooling, consists of a closed polygonal microchannel filled with a wetting liquid and a long vapor bubble. We model the evaporation, fluid flow, and …
Investigating Wave Forces On Coastal Bridge Decks, Guoji Xu
Investigating Wave Forces On Coastal Bridge Decks, Guoji Xu
LSU Doctoral Dissertations
Tsunamis and hurricane induced waves are responsible for many coastal bridge failures, especially in the last decade. In the current study, three countermeasures (reducing the entrapped air, elevating the structures and rigidifying the structures) are considered, two wave types (solitary wave theory and Stokes wave theory) are chosen, and two bridge types (single bridge deck and twin bridge decks) are taken into account. Parametric studies are conducted based on Computational Fluid Dynamics (CFD) software ANSYS Fluent. This dissertation comprises two broad themes according to the wave types adopted. The first one is to make a great effort to investigate solitary …
Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello
Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello
LSU Doctoral Dissertations
The objective of these studies was to examine the effects of oat-based cereals and a spinach extract, on eating behavior. The cereals compared included instant oatmeal (IO), old fashioned oatmeal (SO), and a ready to eat cereal (RTEC), each containing the soluble fiber beta-glucan. The spinach extract containing thylakoids, the internal photosynthetic membrane of plants, was compared with a placebo. The first study, a randomized crossover trial compared the effect of IO and SO on subjective ratings of satiety, with the RTEC. Subjects consumed isocaloric 150kcal servings of the cereals in random order. Visual analogue scale ratings evaluating satiety were …
Polycyclic Aromatic Hydrocarbons Dynamics In The Northern Gulf Of Mexico, Puspa Lal Adhikari
Polycyclic Aromatic Hydrocarbons Dynamics In The Northern Gulf Of Mexico, Puspa Lal Adhikari
LSU Doctoral Dissertations
Polycyclic aromatic hydrocarbons (PAHs) are introduced into the marine environment via oil seeps/spills, riverine discharges, continental runoff, coastal erosion, and atmospheric deposition. An estimated 2.1 x 1010g of PAHs entered into the northern Gulf of Mexico (GOM) during the Deepwater Horizon (DWH) oil spill in 2010. It became evident following the oil spill that accurate quantification of ultimate fate of these potentially carcinogenic and/or mutagenic organic pollutants is extremely challenging. In general, very little is known about PAHs fate, distribution and accumulation in the open ocean ecosystems. This study determines the upper ocean vertical fluxes and sedimentary PAHs accumulation rates …
Application Of Discrete Element Method And Computational Fluid Dynamics To Selected Dispersed Phase Flow Problems, Oladapo Olanrewaju Ayeni
Application Of Discrete Element Method And Computational Fluid Dynamics To Selected Dispersed Phase Flow Problems, Oladapo Olanrewaju Ayeni
LSU Doctoral Dissertations
A parallel discrete particle modelling framework (PAR_DPM3D) is applied to study three fundamental multiphase flow problems: The sedimentation of a cluster of particles in a viscous ambient fluid, multiphase flow in a bench-scale fluidized bed and granular segregation and mixing dynamics in a rotating drum. Various phenomena including torus formation and particle cluster breakup are reproduced. We provide new insights into the volume fraction dependence of the dynamic characteristics of a settling particle cluster and find a similar dependence in the simulations as in the theoretical predictions of Nitsche and Batchelor 1. Similarities in the interaction between a system of …
Implications Of Psr J0737-3039b For The Galactic Ns-Ns Binary Merger Rate, C. Kim, B. B. P. Perera, M. A. Mclaughlin
Implications Of Psr J0737-3039b For The Galactic Ns-Ns Binary Merger Rate, C. Kim, B. B. P. Perera, M. A. Mclaughlin
Faculty & Staff Scholarship
The Double Pulsar (PSR J0737−3039) is the only neutron star–neutron star (NS–NS) binary in which both NSs have been detectable as radio pulsars. The Double Pulsar has been assumed to dominate the Galactic NS–NS binary merger rate
Seismic Velocity Characteristics Of Partially Saturated Unconsolidated Sediments, Jie Shen
Seismic Velocity Characteristics Of Partially Saturated Unconsolidated Sediments, Jie Shen
LSU Doctoral Dissertations
Seismic velocity models of the near-surface (< 30 m) better explain seismic velocities when all elements of total effective stress are considered, particularly in materials with large cohesive and soil suction stress such as clays. Traditional constitutive elastic models assume interparticle and soil suction stresses are negligible. This study proposes a new methodology which corrects total effective stress in Hertz-Mindlin theory for interparticle and soil suction and calculates the elastic moduli by extending Biot-Gassmann theory to include pressure effects induced by water saturation changes and cohesion. The proposed model predicts seismic velocities that correlate well with measured field velocities from the literature. Soil density, porosity, elastic moduli and the soil-water characteristic curve (SWCC) are important properties for soil characterization. Currently, geotechnical and laboratory tests for soil properties are costly and limited to point sampling sites. Seismic surveys can potentially provide laterally continuous soil property values that may complement geotechnical borehole tests with low cost. We propose a new method to invert for soil properties and the SWCC from seismic P- and S-wave velocity-vs.-depth profiles interpreted from shallow (< 25 m depth) unconsolidated sediments under conditions of near-full saturation (> 99%). The results from seismic soil property inversion are validated by comparison to geotechnical and laboratory results conducted independently in the same area as the seismic survey. Knowledge of homogeneous and heterogeneous fluid-distribution patterns is important for the estimation of oil reserves, reservoir simulation, the interpretation of time-lapse seismic, and the selection of remediation techniques for groundwater contamination. Problems exist in determining in-situ fluid-distribution patterns in unconsolidated sediments because laboratory tests on core samples may not be representative of in-situ conditions. We propose a new method to determine in-situ fluid-distribution patterns by inverting …
Game Theoretic Analyses Of The United States-Canada Softwood Lumber Trade, Rajan Parajuli
Game Theoretic Analyses Of The United States-Canada Softwood Lumber Trade, Rajan Parajuli
LSU Doctoral Dissertations
The ongoing softwood lumber trade dispute between the United States (U.S.) and Canada is one of the most contentious and largest bilateral trade battles over the recent decades. The bilateral trade debate is mostly because of the different forestland ownership systems in the U.S. and Canada, and the alleged timber subsidies by provincial governments to Canadian lumber producers. The Softwood Lumber Agreement (SLA) 2006 between the U.S. and Canada is the latest transitory solution of this dispute, entailing Canada to impose mandatory export charges on its lumber shipments to the U.S. In order to understand this trade dispute from a …
Wiyot Residents- Arcata Marsh History, Susie Van Kirk
Wiyot Residents- Arcata Marsh History, Susie Van Kirk
Susie Van Kirk Papers
From time immemorial, Wiyot people lived in permanent villages around North or Arcata Bay. Tidal flats and sloughs, bay channels, brackish marshes, creeks, and seasonal wetlands and ponds were the nature of things, all providers of food and materials. The people fished, harvested bivalves and crustaceans, gathered plant materials, and hunted waterfowl, marine mammals, and upland game. The bay and its environs sustained them.
Lower Prairie Creek Project Mining, Susie Van Kirk
Lower Prairie Creek Project Mining, Susie Van Kirk
Susie Van Kirk Papers
Collection of newspaper research, deeds, and patents.
Eye Movement Patterns As An Indicator Of Task Automaticity, Olga Clarke
Eye Movement Patterns As An Indicator Of Task Automaticity, Olga Clarke
Theses : Honours
Automaticity is a vital aspect of daily living, as it allows for tasks to be completed quickly and with the fraction of the cognitive load required for tasks that cannot be completed automatically. Task automaticity is commonly measured with reaction time, which is considered to be an indirect measure of behaviour. As more direct measures are becoming available, there is an opportunity to assess task automaticity in greater detail. The purpose of the current study was to determine whether eye movements change as participants reach task automaticity. The study involved 16 participants who were asked to complete the dot counting …
The Missing Link: Filling The Gap And Achieving Success In Australian Contrabass Auditions, Giovanni Vinci
The Missing Link: Filling The Gap And Achieving Success In Australian Contrabass Auditions, Giovanni Vinci
Theses : Honours
In Australia, a contrabass player who wishes to win a full-time orchestral position must pass a formal audition. Australian contrabass auditions normally consist of both solo works and a set of orchestral excerpts. In order to be successful in the audition, the aspiring musician must meet the standard expected by the adjudicating panel of musicians. This dissertation explores the keys to success in such auditions, shining light upon why some musicians are successful and others not. A series of interviews have been conducted with string musicians around Australia to assist in discovering optimal strategies and approaches to achieving success. Practising …
Thinking Differently About Reflective Practice In Australian Social Work Education: A Rhapsody, Lynelle Watts
Thinking Differently About Reflective Practice In Australian Social Work Education: A Rhapsody, Lynelle Watts
Theses: Doctorates and Masters
There are many different ways of thinking about reflective practice in social work education in Australia. This research utilises a musical metaphor to illustrate this diversity. Written as a piece of music with album notes, the study utilises a reflexive methodology with a qualitative mixed method approach. Three studies were conducted to explore how reflective practice is understood in social work education and practice in Australia. The first study examined my own learning and teaching of reflective practice through an autoethnographic process. The findings indicated a range of models of reflective practice potentially available to the educator. Also explored in …
Managerial Cost Accounting, Christopher M. Fairchild
Managerial Cost Accounting, Christopher M. Fairchild
Syllabus Repository
No abstract provided.
Disambiguating Company Names In Microblog Text Using Clustering For Online Reputation Management, Fernando Perez-Tellez, John Cardiff, Paolo Rosso, David Pinto
Disambiguating Company Names In Microblog Text Using Clustering For Online Reputation Management, Fernando Perez-Tellez, John Cardiff, Paolo Rosso, David Pinto
Articles
Twitter is used by millions of users to publish brief messages (tweets) with the purpose of sharing experiences and/or opinions about a product or service. There is a clear need for systems that can mine these messages in order to derive information about the collective thinking of twitterers (e.g. for opinion or sentiment analysis). Tweet analysis is a very important task because comments, opinions, suggestions, complaints etc. can be used for marketing strategies or for determining information on a company’s reputation. For this purpose, it is necessary to automatically establish whether a tweet refers to a company or not, when …
The Tyrosine Kinase Bcef And The Phosphotyrosine Phosphatase Bced Of Burkholderia Contaminans Are Required For Efficient Invasion And Epithelial Disruption Of A Cystic Fibrosis Lung Epithelial Cell Line, Ana S. Ferreira, Ines N. Silva, Fabio Fernandes, Ruth Pilkington, Máire Callaghan, Siobhán Mcclean, Leonilde M. Moreira
The Tyrosine Kinase Bcef And The Phosphotyrosine Phosphatase Bced Of Burkholderia Contaminans Are Required For Efficient Invasion And Epithelial Disruption Of A Cystic Fibrosis Lung Epithelial Cell Line, Ana S. Ferreira, Ines N. Silva, Fabio Fernandes, Ruth Pilkington, Máire Callaghan, Siobhán Mcclean, Leonilde M. Moreira
Articles
Bacterial tyrosine kinases and their cognate protein tyrosine phosphatases are best known for regulating the biosynthesis of polysaccharides. Moreover, their roles in the stress response, DNA metabolism, cell division, and virulence have also been documented. The aim of this study was to investigate the pathogenicity and potential mechanisms of virulence dependent on the tyrosine kinase BceF and phosphotyrosine phosphatase BceD of the cystic fibrosis opportunistic pathogen Burkholderia contaminans IST408. The insertion mutants bceD::Tp and bceF::Tp showed similar attenuation of adhesion and invasion of the cystic fibrosis lung epithelial cell line CFBE41o- compared to the parental strain B. contaminans …
The Two Witnesses And The Land Beast In The Book Of Revelation, Kayle B. De Waal
The Two Witnesses And The Land Beast In The Book Of Revelation, Kayle B. De Waal
Andrews University Seminary Studies (AUSS)
No abstract provided.
Cultural Considerations And Women's Ordination, Bruce Bauer, Boubakar Sanou
Cultural Considerations And Women's Ordination, Bruce Bauer, Boubakar Sanou
Andrews University Seminary Studies (AUSS)
No abstract provided.
Sennacherib At The Gates Of Jerusalem: Story, History And Historiography [Review] / Kalimi, Isaac, And Seth Richardson, Eds., Tarsee Li
Andrews University Seminary Studies (AUSS)
No abstract provided.
The Ellen G. White Letters & Manuscripts With Annotations, 1845-1859. [Volume 1] [Review] / Poirier, Timothy L., Ed. Roland Karlman, Annotator, Michael W. Campbell
The Ellen G. White Letters & Manuscripts With Annotations, 1845-1859. [Volume 1] [Review] / Poirier, Timothy L., Ed. Roland Karlman, Annotator, Michael W. Campbell
Andrews University Seminary Studies (AUSS)
No abstract provided.
Loughborough: The Last Of The Adventist Pioneers [Review] / Strayer, Brian E.J.N., Michael W. Campbell
Loughborough: The Last Of The Adventist Pioneers [Review] / Strayer, Brian E.J.N., Michael W. Campbell
Andrews University Seminary Studies (AUSS)
No abstract provided.
Biblia Hebraica Stuttgartensia: A Reader’S Edition [Review] / Vance, Donald A., George Athas, And Yael Avrahami, Oliver Glanz
Biblia Hebraica Stuttgartensia: A Reader’S Edition [Review] / Vance, Donald A., George Athas, And Yael Avrahami, Oliver Glanz
Andrews University Seminary Studies (AUSS)
No abstract provided.
Dr. John Harvey Kellogg And The Religion Of Biologic Living [Review] / Wilson, Brian C., Kevin M. Burton
Dr. John Harvey Kellogg And The Religion Of Biologic Living [Review] / Wilson, Brian C., Kevin M. Burton
Andrews University Seminary Studies (AUSS)
No abstract provided.
Creation In Hebrews, Felix H. Cortez
Creation In Hebrews, Felix H. Cortez
Andrews University Seminary Studies (AUSS)
No abstract provided.
Cleansing The Common: A Narrative-Intertextual Study Of Mark 7:1-23, Eike Mueller
Cleansing The Common: A Narrative-Intertextual Study Of Mark 7:1-23, Eike Mueller
Andrews University Seminary Studies (AUSS)
No abstract provided.
God Dwells Among Us: Expanding Eden To The Ends Of The Earth [Review] / Beale, G. K. And Mitchell Kim, Kendra Haloviak Valentine
God Dwells Among Us: Expanding Eden To The Ends Of The Earth [Review] / Beale, G. K. And Mitchell Kim, Kendra Haloviak Valentine
Andrews University Seminary Studies (AUSS)
No abstract provided.
Benefit Of The Doubt: Breaking The Idol Of Certainty [Review] / Boyd, Gregory A., Martin Frederick Hanna
Benefit Of The Doubt: Breaking The Idol Of Certainty [Review] / Boyd, Gregory A., Martin Frederick Hanna
Andrews University Seminary Studies (AUSS)
No abstract provided.
When, Where, And Why Did The Change From Sabbath To Sunday Worship Take Place In The Early Church?, Robert Kerry Mciver
When, Where, And Why Did The Change From Sabbath To Sunday Worship Take Place In The Early Church?, Robert Kerry Mciver
Andrews University Seminary Studies (AUSS)
No abstract provided.
The Current Theological Debate Regarding Eternal Punishment In Hell And The Immortality Of The Soul, Jiří Moskala
The Current Theological Debate Regarding Eternal Punishment In Hell And The Immortality Of The Soul, Jiří Moskala
Andrews University Seminary Studies (AUSS)
No abstract provided.