Index Catalog // ScholarsArchive@OSU

Measuring and Correcting the Electrical Resistivity of Concrete Pore Solution in Fresh Mixtures

Creator:: Biever, Joseph H.
Abstract:: A vital aspect of concrete construction is quality assurance and control (QA/QC). Engineered structures must meet pre-determined and agreed-upon strength and durability requirements. Concrete falls into a specific category of infrastructure material because in most cases, these strength and durability requirements cannot be found until the material has at least...
Resource Type:: Masters Thesis
Full Text:: my committee members Dr. Istok and Dr. O Neill for taking the time to review my thesis and be a

Hydraulic influences on pool morphology : a laboratory investigation

Creator:: Frizenschaf, Jacqueline
Abstract:: A flume study was conducted to investigate the influences of changing hydraulic conditions on the bed morphology of a scoured pool. During a simulated storm runoff event, responses of the pool were tested under different conditions: clearwater flow, sediment supply at steady rates, and two different sediment mixtures of the...
Resource Type:: Masters Thesis
Full Text:: examination committee members Dr. Robert L. Beschta and Dr. Jonathan D. Istok, who both helped me to further

Simulation of drag reduction due to multi-aligned spheres

Creator:: Lindqvist, Varna
Abstract:: A method was sought to predict the flight paths and collisions for closely spaced ink droplets of various sizes as a design aid for ink-jet printing development. Computational fluid dynamics models of two rigid aligned spheres, as a proxy for ink droplets, were initiated in atmospheric pressure air at constant...
Resource Type:: Masters Thesis
Full Text:: Ellipsoid long axis length (m) Cd Drag coefficient d Sphere diameter (μm) g Gravitational

A thermal hydraulics analysis of a molybdenum production element for implementation in TRIGA reactors

Creator:: Byfield, Patrick
Abstract:: The metastable isotope of technetium-99 (Tc-99m) is an important diagnostic tool used in the field of nuclear medicine due to the isotope's 6.0 hour half-life, 140.5 keV γ-decay mechanism, and multiple oxidation states [1,2]. Approximately 70% of the world’s nuclear medicine procedures involve the use of Tc-99m [3]. The conventional...
Resource Type:: Masters Thesis
Full Text:: -1) where 1/2 1 8 2 16h h k for D D   = < <    (2-2) ( )1/32 0.8 , 0.8 .5k min

Photonic Sintering of Nanoparticle Inks : Experimental Characterization, Computational Modeling and System Design for Additive Manufacturing

Creator:: MacNeill, William D.
Abstract:: Photonic sintering of nanoparticles is a relatively new process for sintering of nanoparticles, deposited on a substrate, into functional solid structures. The working principle of this process is the incidence of large-area broad-spectrum light onto deposited nanoparticles, which results in heat generation in the nanoparticles and their subsequent densification. Key...
Resource Type:: Masters Thesis
Full Text:: OF William D. MacNeill for the degree of Master of Science in Mechanical Engineering presented

Experimental demonstration and modeling of aerobic cometabolism of 1,4-dioxane by isobutane-utilizing microorganisms in aquifer microcosms

Creator:: Rolston, Hannah M.
Abstract:: 1,4-dioxane, a probable human carcinogen at low (< 1ppb) concentrations, has emerged as a groundwater contaminant due to its historical use as a stabilizer for the chlorinated solvent 1,1,1-trichloroethane. Aerobic cometabolism, the use of a primary substrate to induce the production of microbial enzymes that fortuitously degrade other compounds, is...
Resource Type:: Masters Thesis
Full Text:: Dolan, Dr. Tyler Radniecki, and Dr. Jack Istok. I appreciate your commitment as researchers, educators

Are watershed management plans selected and preferred by stakeholders considering current climate conditions robust against climate change scenarios? A sensitivity study of stakeholders spatially-explicit preferences

Creator:: Cannady-Shultz, Kenneth R.
Abstract:: In the light of the changing climate, the importance of designing effective watershed management plans that are likely to be implemented is becoming ever more important. This research introduces a new concept, consensus, for incorporation into stakeholder-guided interactive optimization of watershed management plans. User preferences were mathematically simulated based upon...
Resource Type:: Masters Thesis

Design of a microstructured liquid-liquid separator utilizing a capillary pressure gradient

Creator:: Zoebelein, Conor M.
Abstract:: Continuous liquid-liquid two-phase separation is needed in microfluidic devices. Due to the small characteristic lengths of microreactors, phenomena such as mass transport via molecular diffusion occur within seconds. Typically, discrete slugs of an extract are created within microchannels for high specific interfacial area to achieve intensified mass transfer. A challenge...
Resource Type:: Masters Thesis
Full Text:: using MATLAB script in Appendix D ................................................. 8 4. Tower for

Copper Speciation in Wastewater-Impacted Surface Waters

Creator:: Mosbrucker, Ariel M.
Abstract:: This study investigates the relationship between total and ionic copper in samples taken from the Tualatin River and wastewater treatment facilities (WWTFs) that discharge into the Tualatin River. Copper speciation was analyzed by determining conditional stability constants and densities of copper binding ligands on the dissolved organic matter (DOM) in...
Resource Type:: Masters Thesis

An Experimental Study on Violent Geysers in Vertical Shafts

Creator:: Elayeb, Ibrahem S.
Abstract:: A Geyser in a stormwater (SW) and combined sewer system (CSS) is an oscillatory and violent release of a mixture of air and water through vertical shafts. Violent geysers are highly destructive. In the case of combined sewer systems, many municipalities operate their systems at a fraction of their maximum...
Resource Type:: Masters Thesis
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.2 Geyser data for NR experiments (d = 6′′, d/D = 1, (No retrofitting)) . . . . . . 14 2.3

ScholarsArchive@OSU

Measuring and Correcting the Electrical Resistivity of Concrete Pore Solution in Fresh Mixtures

Hydraulic influences on pool morphology : a laboratory investigation

Simulation of drag reduction due to multi-aligned spheres

A thermal hydraulics analysis of a molybdenum production element for implementation in TRIGA reactors

Photonic Sintering of Nanoparticle Inks : Experimental Characterization, Computational Modeling and System Design for Additive Manufacturing

Experimental demonstration and modeling of aerobic cometabolism of 1,4-dioxane by isobutane-utilizing microorganisms in aquifer microcosms

Are watershed management plans selected and preferred by stakeholders considering current climate conditions robust against climate change scenarios? A sensitivity study of stakeholders spatially-explicit preferences

Design of a microstructured liquid-liquid separator utilizing a capillary pressure gradient

Copper Speciation in Wastewater-Impacted Surface Waters

An Experimental Study on Violent Geysers in Vertical Shafts

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