Index Catalog // ScholarsArchive@OSU

Development of a real-time digital computing facility in chemical engineering

Creator:: Fukui, Stanley Chikashi
Abstract:: An advanced laboratory interfacing capability was developed for the Real-Time Digital Computer Laboratory in the Chemical Engineering Department. A stationary interfacing unit located beside the computer mainframe and two small remote units were designed, developed and thoroughly tested. These interfacing units permit experiments with a wide variety of analog and...
Resource Type:: Masters Thesis
Full Text:: supply ±10 milliamperes maximum. The current output cards must be loaded with approximately 250 ohms

Residence time distribution of solids in a multi-compartment fluidized bed system

Creator:: Pongsivapai, Pajongwit
Abstract:: In a conventional well-mixed fluidized bed the solids are almost completely mixed and the residence time for individual particles may vary between zero and infinity. For materials especially sensitive to the processing time, a wide distribution of residence time is extremely undesirable. A multi-compartment fluidized bed was proposed to minimize...
Resource Type:: Masters Thesis
Full Text:: beads particles is shown in table 4-1. 36 Sieve Aperture (p.m) Weight Percent (%) 125-250 8 297

Density Functional Theory Investigation of CH Coupling and CH Hydrogenation Reactions on Different Cobalt Surface Facets and Fischer-Tropsch Temperature Swing Reactor Optimization

Creator:: Petersen, Dennis F.
Abstract:: Fischer-Tropsh Synthesis is a chemical process that converts CO and H₂ (syngas) into long stable hydrocarbon chains to use as fuel. This process suffers from large product distribution that requires expensive post processing. In this study, the reaction mechanism of hydrocarbon chain growth on Co is investigated on different surface...
Resource Type:: Masters Thesis
Full Text:: ……………..…………………....35 4.3. Simplified Carbon Reaction Network……………………………………..………………...36 5.1. CH* Coupling IS and FS

The plume model for large utility scale atmospheric fluidized bed combustors

Creator:: Park, Dalkeun
Abstract:: The atmospheric fluidized bed combustor (AFBC) is an alternative to the pulverized coal burner. The size of a utility scale AFBC would be enormous so that the use of large particles is necessary to reduce its size. In modeling the combustion of coal and capture of sulfur released from the...
Resource Type:: Dissertation
Full Text:: utility scale electric power generation. Even a small AFBC (250 MW) would be enormous by chemical

Fluidized bed granulator for an autocausticization recovery process of sodium in black liquor : experiment and theory

Creator:: Thulstrup, Niels, 1970-
Abstract:: Production of dry particles made of titanium dioxide powder and black liquor is the first step in a newly proposed black liquor treatment process (Frederick et. al., 1992). This work investigates the granulation processes in a fluidized bed granulator of titanium dioxide and black liquor. Experiments are performed in a...
Resource Type:: Masters Thesis
Full Text:: continously operated fluidized bed granulator, W bed=1800 [g], Fs=10 [g/min]. 99 5.18 Steady state

Experimental and theoretical analysis of radial porosity in a monodisperse sphere packing

Creator:: Nakamoto, Nathan
Abstract:: This thesis presents an experimental study of radial porosity in a manually filled cylindrical container with glass spheres. The symmetric distribution of bead diameter allowed for normalization of container properties and porosity models. The aspect ratio of the container was approximately 3.9, with tube-to-particle-diameter ratio λ ≈ 24.6 and height-to-particle-diameter...
Resource Type:: Masters Thesis

The Design and Construction of a Cost-Effective Atomic Layer Deposition System for Thin Film Growth

Creator:: Hong, Youngjoon
Abstract:: This paper describes the construction and use of a cost-effective custom-built atomic layer deposition (ALD) system, as well as the investigation of aluminum oxide atomic layer deposition using trimethylaluminum and water. For this research, a cost-effective ALD system was constructed for less than $8,000 using existing parts that were given...
Resource Type:: Masters Thesis
Full Text:: ellipsometry with Film Sense Ellipsometer FS-XY150. 22 A new custom-built heater block was designed

Solubilities of various salts in cooling tower water and a correlation to determine their scaling threshold

Creator:: Herbig, Scott M.
Resource Type:: Masters Thesis

Conversion of Waste Plastics to Diesel-Like Fuel Through Pyrolysis

Creator:: Carlson, Kayla
Abstract:: As the development, processing, and manufacturing of plastic has improved over the years, so has our amount of plastic waste. Currently, only approximately 9% of post-consumer plastics get recycled. The other 91% is buried in landfills, burned, ends up in the ocean, or is accumulating in communities without access to...
Resource Type:: Honors College Thesis
Full Text:: temperature at the bottom of the reactor. 7 The amount of plastic feed varied from 250-1000 g to

The flow characteristics of commercial powdered catalysts study II

Creator:: Nichols, Gayle Howard
Resource Type:: Masters Thesis
Full Text:: '? 218 316 2.8 4.20 82.7 00643 217 32 228 250 363 5.8 4.04 91.4 01248 218 34 310 295 428 10.5 4.65 124

The solubility of naphthalene in supercritical carbon dioxide : a comparison of the compressed-gas and expanded-liquid treatments

Creator:: Jones, Timothy J.
Resource Type:: Masters Thesis
Full Text:: done at constant molar volume and leads to where fs = frexp [ 14( P P°) 2 RT os os/f 2 = f 2 (7a

Uptake and metabolism of the explosive RDX by the marine seaweeds Portieria hornemannii and Acrosiphonia coalita, and uptake of the explosive TNT by algal extracts of Portieria hornemannii

Creator:: Weber, Ryan A.
Abstract:: This study examines the interactions between explosive environmental contaminants and marine seaweeds. The scope of this thesis includes studies done on the explosive RDX with tissue cultures of marine seaweeds, as well as studies on the explosive TNT with seaweed extracts. The ability of two different marine species of macroalgae...
Resource Type:: Masters Thesis
Full Text:: final concentration of 0.02 M. NADH stock solution was distributed to 8, 250 µl centrifuge tubes and

Heparin-regulated release of growth factors in vitro and angiogenic response in vivo to implanted hyaluronan hydrogels containing VEGF and bFGF

Creator:: Pike, Daniel B.
Abstract:: Biocompatible hydrogels composed of covalently crosslinked, chemically modified hyaluronan (HA), gelatin (Gtn), and heparin (Hp) were synthesized for controlled release of human vascular endothelial growth factor (VEGF) or basic fibroblast growth factor (bFGF). We hypothesized that inclusion of small quantities of heparin in these gels would result in regulated growth...
Resource Type:: Masters Thesis
Full Text:: and commonly holds more blood. The bar in the lower right indicates 250 µm [30

The flow characteristics of commercial powdered catalysts

Creator:: Rynning, Delroy Finlay
Resource Type:: Masters Thesis
Full Text:: 1120 g/sec grains ft/sec cm 1120 ft,fs 69 26.8 23.8 o.8 62 30 34 o.66 642 4.26 4.59

Corrosion and corrosion control of trawl wire rope

Creator:: Dardel, Brice Marie Jean
Abstract:: Trawl cables are wire ropes which corrode under the influence of seawater depending on fishing habits. Information about the problem was obtained from the preceeding work by Robert D. Malloch, and from contacts with the fishermen. Statistical data about fishing boats and fishing habits on the Pacific Northwest Coast are...
Resource Type:: Masters Thesis
Full Text:: WIRE ROPES I. INTRODUCTION About 250 trawlers from Washington, Oregon and Northern California drag

Turbulent pipe flow drag reduction with narrow distribution polystyrene materials : a test of drag reduction theories

Creator:: Yu, Da-Wei David
Resource Type:: Masters Thesis
Full Text:: measured for the solvent alone (fs) at a specific Reynolds number. There are several proposed theories

Determination of the optical constants of ash samples from kraft recovery boilers

Creator:: Samretvanich, Artit
Resource Type:: Masters Thesis
Full Text:: iA(co) = 1 fexp(icoOdt fs(w)exp(iwt)dw + 1 Jexp(iwt)dt fs(co ) exp(icot)dco 2rc 2rc i-. 0 --. (9c

The uptake, transformation, and physiological response of the marine red macroalga Portieria hornemannii to the nitroaromatic explosive 2,4,6-trinitrotoluene (TNT)

Creator:: Cruz-Uribe, Octavio T.
Abstract:: The capability of the marine red macroalga Portieria hornemannii to remove and detoxify the nitroaromatic explosive 2,4,6-trinitrotoluene (TNT) in a seawater environment was evaluated using an axenic microplantlet suspension culture system. Microplantlets were challenged with TNT dissolved in seawater at concentrations of 1 to 50 mg L-1 in well-mixed photobioreactors...
Resource Type:: Dissertation

Effects of water quality and surface temperature on the scaling characteristics of cooling tower water

Creator:: Lahm, Lawrence
Abstract:: The fouling of cooling tower water was investigated as a function of heater surface temperature and water quality. In particular, the effects on fouling of the addition of calcium in excess of the amounts required for saturation were examined. First, the average bulk water temperature was 97 ± 1 degree...
Resource Type:: Masters Thesis

Multiscale modeling of two-phase flows in microarchitectures with microfeatures

Creator:: Truszkowska, Agnieszka
Abstract:: Two-phase flows in microtechnology based devices are purposefully present in multiphase reactors, phase separators, analytical devices and others. Two-phase flows can also be an undesirable side effect occurring during operation due to phase transitions or, more commonly, introduction of surrounding air through equipment gaps and with process feed. In both...
Resource Type:: Dissertation

Numerical Methods for Upscaling Complex Transport Phenomena

Creator:: Taghizadeh, Ehsan
Abstract:: Transport phenomena specially the ones that occur in the various engineering disciplines such as tissue engineering and natural environment are often complex to analyze mostly due to the dynamic and geometric complexities; as such, they have been the subject of an active and intense area of research in past decades....
Resource Type:: Dissertation
Full Text:: ) time period. (ii) Case 2 (first step). The solution, S1, for 0 < t < 250 min. (iii) Case 2 (second step

Drag coefficients for flat plates, spheres, and cylinders moving at low Reynolds numbers in a viscous fluid

Creator:: Jones, Alva Merle
Resource Type:: Masters Thesis
Full Text:: heavy duty gea r oil were used; Shell SAE 140 and Richfield SAE 250 . Viscosities of the two oils

Silicon and germanium uptake and cell growth by the marine diatom Nitzschia frustulum

Creator:: Jeffryes, Clayton S.
Abstract:: Diatoms are single celled algae that form cell walls made primarily of silicon dioxide (SO₂). The metabolic machinery that gives diatoms the ability to biogenically form highly ordered solid silica from soluble silicon extracted from their external environment provides a unique platform to create novel nanostructured materials inexpensively and with...
Resource Type:: Masters Thesis

Techno-economic analysis of algal lipid fuels

Creator:: Xiang, Xuwen
Abstract:: A techno-economic analysis (TEA) was performed to evaluate the technology, cost, and resource use for algal biofuel production based on today’s economics and technology. The basic goal of this study is to develop a model to calculate the mass and energy balances and costs to produce 10 million gal of...
Resource Type:: Masters Thesis
Full Text:: -8000 1500 KNO3 500-2500 1000 Ca(NO3)2 or Ca(NO3)2·4H2O 250-750 500 Ammonia NH4Cl* 50 50

Modeling and control studies of a magnetically-staged fluidized bed

Creator:: Al-Zahrani, Abdulrahim
Abstract:: A column which contains a series of three fluidized beds for counter-current contacting of solid particles with a gas stream has been studied. Successful, independent control of solids holdup on each stage has been achieved by manipulating the field of a magnetic distributor-downcomer on each stage. Two methods to manipulate...
Resource Type:: Dissertation
Full Text:: ) Actual vs. Measured Weight Fractions. 250 (106) Weight Fraction in the Fluidizing Region as a Function

The preparation and evaluation of greases with a synthetic oil base

Creator:: Adamson, Robert Wallace
Resource Type:: Masters Thesis
Full Text:: various substances is available from tho manufacturer (26, p.155; 19, p.249-250). The 50-H5 series are

Utilization of Renewable Energy via Thermochemistry

Creator:: Lei, Fuqiong
Abstract:: Utilization of solar energy or wind energy for electricity production is inherently challenging due to the diurnal and seasonal variations and normal intermittency. Effective, high efficiency storage methods need to be developed for further advancing renewable energy utilization. Endothermic chemical processing and thermochemical energy storage can be both employed as...
Resource Type:: Dissertation
Full Text:: (~10years) Battery (Lithium- ion) 95-98 250-550 230-450 + High cycle efficiency + High

Strategies for process flowsheeting

Creator:: Sanz, Carlos C.
Abstract:: Two packages of subroutines were developed to perform material balances on chemical processes using the simultaneous modular approach and the equation-based approach. The performances of these packages were compared for five different processes under at least two conditions: one with no design specifications, and one with two or more design...
Resource Type:: Masters Thesis
Full Text:: Figure 1-3. Simple Flowsheet with a Recycle Stream Fs FLASH 8 algorithms to choose the best tear

Electron spin resonance of ZnS:Mn thin films grown by halide transport chemical vapor deposition

Creator:: Lu, Xiaobin
Resource Type:: Masters Thesis

Kinetic study on the production of silicon nitride by direct nitridation of silicon in a fluidized bed : experiment and modeling

Creator:: Jovanovic, Zoran R.
Resource Type:: Dissertation
Full Text:: ) 250 C23. Run-22: results of XRD analysis (dp > 425 pm) 252 C24. Run-23: results of XRD analysis

The effect of copolymer and iron on the fouling characteristics of cooling tower water containing corrosion inhibitors

Creator:: Abu-Al-Saud, Abdullah A.
Abstract:: Various antifoulant treatment programs and the considerations necessary for the effective use of such programs were examined. Two different groups of tests, with and without iron contamination, have been carried out on the effectiveness of several of the state-of-the-art copolymers (PA, HEDP, AA/HPA, AA/MA, SS/MA and AA/SA) in the inhibition...
Resource Type:: Dissertation

Alkalinity effects on the scaling of simulated cooling tower water

Creator:: Morse, Robert Weber
Resource Type:: Masters Thesis

Removal of E. coli with alternative media Biosand filters

Creator:: Fulton, Nathan J.
Abstract:: When Biosand filters cannot be constructed with crushed quarry rock due to resource limitations, a suitable alternative filter media is needed. In this research, two crushed quarry rock alternatives were examined. Three bench-scale Biosand filters with crushed rock, beach sand, and heat-treated beach sand media were simultaneously dosed with Willamette...
Resource Type:: Masters Thesis

Investigation of Styrene-Free Unsaturated Polyester Resins for Fiber-Reinforced Composites

Creator:: Wu, Yili
Abstract:: Most of existing commercial unsaturated polyester (UPE) resins are typically composed of a UPE and a high amount of highly volatile, flammable, and toxic styrene. The emission of hazardous styrene in the handling of the UPE resins and the preparation and use of fiber-reinforced UPE composites poses severe hazards to...
Resource Type:: Dissertation

Measuring and modeling solids movement in a large, cold fluidized-bed test facility

Creator:: Daous, Muhammad A.
Abstract:: Solids movement in large-particle fluidized beds was studied in an 18 in x 18 in (46 cm x 46 cm) tube-filled, cold fluidized bed test facility. Direct measurement of local solid mass flux in two dimensions at various locations inside the bed was made possible by a new instrument developed...
Resource Type:: Dissertation

Fouling characteristics of cooling tower water containing corrosion inhibitors

Creator:: Santoso, Elisabeth
Abstract:: The fouling characteristics of cooling tower water containing various corrosion inhibitors and other additives on heat transfer surface have been investigated. Corrosion inhibitors investigated included zinc-chromate and phosphates. In addition, additives including polyacrylate and phosphonate (HEDP and AMP) were used to determine their effectiveness as antifoulants. The tests were conducted...
Resource Type:: Dissertation

Fouling characteristics of cooling tower water : pH effect

Creator:: Roy, Bhasker Vilva
Abstract:: The fouling characteristics of simulated cooling tower water flowing over a heated metallic surface has been studied. The bulk temperature of the water was maintained around 95°F. Mainly three different water qualities with respect to calcium hardness level were investigated. The pH was controlled by the addition of hydrochloric acid....
Resource Type:: Masters Thesis

Partial dehydration of glucose to oxygenated hydrocarbons in molecular-sieving catalysts

Creator:: Lourvanij, Khavinet
Resource Type:: Dissertation
Full Text:: . Activity ratio (Fs) for the four major reaction processes at 130°C vs. B 72 LIST OF TABLES Table

Experimental approach for the determination of lignin modification by manganese peroxidase

Creator:: Goby, Jeffrey D.
Abstract:: Degradation of lignin to simpler compounds is desirable for removing residual lignin during paper manufacture and accessing biomass carbohydrates for biofuel production, among other purposes. Lignin transformation using enzymes found in white rot fungi, some of nature's most efficient lignin-degrading organisms, offers a more environmentally benign, selective, and possibly less...
Resource Type:: Masters Thesis

Modeling Study of the Effects of Catalyst Support on Bio-Hydrogenated Diesel Production Using Density Functional Theory

Creator:: Huang, Dan
Abstract:: The catalyst support effect on NiMoS of bio-hydrogenated diesel production was investigated via density functional theory. The activity, stability and selectivity of catalyst on three widely used catalyst supports (Al2O3, TiO2 and SiO2) were studied and compared. Catalyst-support interaction and Brønsted acidity strength of different catalyst supports were characterized, which...
Resource Type:: Dissertation

Calcium carbonate scaling characteristics of cooling tower water

Creator:: Coates, Kenneth Edwin
Abstract:: Scaling characteristics of calcium carbonate on a heated surface in cooling tower water was investigated. Bulk temperature was maintained constant at 95°F. Flow velocities and surface temperatures ranged from 3 ft/sec to 10.3 ft/sec and from 105°F to 170°F respectively. City water was used as make-up for two different water...
Resource Type:: Masters Thesis
Full Text:: total hardness from an average of 200 ppm as Ca00, to an average of 250 ppm and by introducing

Probing Structure, Selectivity, and Orientation of Biomolecules to Cell Membranes by Sum Frequency Generation

Creator:: Golbek, Thaddeus W.
Abstract:: Cell membranes act as barriers against unwanted movement of ions and biomolecules and are complex surfaces littered with protein channels, ion channels, cholesterol, and a myriad of different proteins. While this surface is extremely well studied, there is still much we do not know. The work in this dissertation demonstrates...
Resource Type:: Dissertation

Mass transfer at the solid-liquid interface for climbing film flow in an annular duct

Creator:: Sutey, Anthony Michael
Resource Type:: Dissertation

Novel Approaches to Porous Material Discovery

Creator:: Sturluson, Arni
Abstract:: Uses for materials with a large surface area and high porosity have grown sig-niﬁcantly in recent years. Porous materials have found usage in applications such as separation, gas storage, sensing, puriﬁcation and more, prompting researchers to ﬁnd and discover numerous new porous materials to suit a speciﬁc purpose. Hundreds of...
Resource Type:: Dissertation

Binding of bacterial lipopolysaccharide by the cationic amphiphilic peptide WLBU2 at interfaces

Creator:: Ryder, Matthew P.
Abstract:: Passage of blood through a sorbent device for removal of bacteria and endotoxin by specific binding with immobilized, membrane-active, bactericidal peptides holds promise for treating severe blood infections. Peptide insertion in the target membrane and stable binding is desirable, while membrane disruption and release of degradation products to the circulating...
Resource Type:: Dissertation

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