Digital Commons Network^™

The Use Of Pure Cultures As A Means Of Understanding The Performance Of A Mixed Culture In The Biodegradation Of Phenol, Chirasakdi Varuntanya

Dissertations

In an effort to gain a more fundamental understanding of the performance of mixed microbial cultures in the biodegradation of toxic organic chemicals, studies have been conducted using three phenol degrading species isolated from a municipal treatment plant. The rate of phenol degradation was investigated for each of the three pure phenol degrading species, and various combinations of the three species. A simple competitive model was used to predict the behavior of the mixed cultures by using the pure culture Monod rate constants. The model fit the growth data for total biomass very well, although (as with the pure culture …

High Temperature Reactions Of 1,2-Dichloroethane With Water Vapor In A Tubular Reactor, Charles E. Anderson

Theses

This study examines the reaction of l,2-dichloroethane with water vapor. The linear-flow method is utilized, assuming plug flow without axial diffusion. Normal operation is at atmospheric pressure and the reactor is a quartz tube in a thermal region 45 cm in length. Two reactor diameters of 0.4 cm and l.05 cm are used. Water and l,2-dichloroethane enter the system in liquid phase via syringe pumps. After vaporizing in heated tubing, they are combined with argon, the reactor carrier gas. The molar ratio of water to l,2-dichloroethane is 55:l and varied residence times are achieved by changing the argon flowrate. Reactor …

Elastic-Plastic Analysis Of Axisymmetrically Loaded Isotropic Circular And Annular Plates Undergoing Large Deflections, Aiman Raji Akileh

Dissertations and Theses

The concept of load analogy is used in the elastic and elastic-plastic analysis of isotropic circular and annular plates undergoing moderately large deflection. The effects of the nonlinear terms of lateral displacement and the plastic strains are considered as additional fictitious lateral loads, edge moments, and in-plane forces acting on the plate. The solution of an elastic or elastic-plastic Von Karman type plate is hence reduced to a set of two equivalent elastic plate problems with small displacements, namely, a plane problem in elasticity and a linear elastic plate bending problem. The method of finite element is employed to solve …

Managing Artificial Groundwater Recharge, Richard C. Peralta, K. G. Kowalski, H. J. Morel-Seytoux

Civil and Environmental Engineering Faculty Publications

Increase in maximum groundwater mining resulting from recharge basin usage in the Grand Prairie is reported. Management model incorporates new influence coefficients that describe effect on groundwater levels of simultaneously' occurring basin/aquifer interflow and groundwater extraction.

Guarding Against Machine Hazards, R. A. Cavaletto

BioResource and Agricultural Engineering

Successful guarding strategies requires knowledge of machine functions, the physical and psychological characteristics of man, and the their interactions. Machine hazards are identified along with recognized guarding methods. Material is included that could be used to teach this subject (case study, prob!em set, glossary}.

A Transient Electromagnetic Flowmeter, Paul J. Lefebvre, William W. Durgin

Office of the Provost Scholarship

An electromagnetic flowmeter was developed to measure transient flows with a frequency response of 60 Hz. The approach taken was to develop suitable electronics to replace the electronics of a commercially available electromagnetic flowmeter normally used for steady-state operation. Use of the commercially available flowmeter body, which includes the magnetic coils, core, and signal electrodes, provided a relatively economical means of fabricating the transient flowmeter. A transient flow calibration facility consisting of a free-falling water column was also designed and built. Results of the calibrations are presented and show that the flowmeter can accurately measure transient flows up to the …

Radiant Energy Transfer And Radiant Barrier Systems In Buildings, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

In Florida and other southern climates we depend on a number of strategies to keep heat out of buildings. Mostly, these affect heat gains by conduction or convection. In the average house, insulating walls and ceilings primarily restricts conduction. Double-glazed windows restrict both conductive and convective heat gain. We have largely ignored radiation - the third means of heat transfer - except in using window treatments and coatings that reflect, absorb or shade from solar energy. But research points to exciting potential for reducing heat gain in buildings by controlling radiation transfer in walls and ceilings through the use of …

Techniques For Shading Residential Walls And Windows, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

Solar radiation is a major heat source in buildings - welcome in cold weather but a summertime problem. Florida's long cooling season and short heating season increase the importance of protecting windows, walls and sliding glass doors during hot weather, while still permitting solar heat to enter a building during cold weather. cooling and heating energy savings of 10% - 20% are possible through good shading strategies. Properly designed roof overhangs can provide adequate sun protection, especially for south-facing surfaces. Vertical shading devices such as trees, trellises, trellised vines, shutters, shading screens awnings and exterior roll blinds are also effective. …

Solar Water Heater Troubleshooting Checklist, Florida Solar Energy Center

FSEC Energy Research Center®

Lists the Symptom, Component, Possible Cause, and Remedy/Check of possible solar hot water heater problems.

Solar Ovens And Cookers, Florida Solar Energy Center

FSEC Energy Research Center®

Solar ovens work much like solar collectors used in domestic water heating systems. Both collect solar radiation, convert it to heat and transfer it to another substance. Solar ovens, however, focus the sun's rays with reflective surfaces on one point. The object of the sun's energy in the solar oven is the food.

Recipes For Solar Cooking, Florida Solar Energy Center, Jo Townsend

FSEC Energy Research Center®

As energy extension agent for the University of Florida Extension Service, Jo Townsend serves as the energy educator to small businesses in central Florida. She conducts employee programs on energy conservation in the workplace. She received her B.S. in home economics from Florida State University and her M.E. from the University of Central Florida. Formerly a home economist for the Florida cooperative Extension Service, Townsend researched and tested recipes for use in microwaves when they first gained popularity. She has been a consultant to Southern Living magazine and to Florida's seafood industry. For the last year, she has tested recipes …

Survey Of The Quality Control Program At A Large Nanufacturing Corporation And Application Of An Identified Decision Making Tool To Solve The Most Costly Quality Problem, Giles Wright Jr.

Graduate Research Papers

The problem of this study has two major components.

1. Identify the major quality control concerns at a large manufacturing corporation.

2. Apply a selected decision-making tool to develop a solution for the most costly quality problem.

Electric Power Transmission & Purchases : Report Of A Study By The Joint Standing Committee On Utilities, 112th Maine Legislature, Maine. Legislature. Joint Standing Committee On Utilities

Maine Collection

Electric Power Transmission & Purchases : Report Of a Study By the Joint Standing Committee on Utilities, 112th Maine Legislature

Maine Legislature. Joint Standing Committee on Utilities.

Augusta, Maine (December 2, 1986).

Contents: Introduction / Issues & Recommendations / Review of 1986 Legislation / Maine's Electric Power Picture / Technical Analysis of Transmission & Wheeling / Economic Implications of Transmission & Wheeling /. Legals Analysis of Transmission & Wheeling / Proposed Legislation / Appendices / Tables & Figures

Shear Layer Coupling With Side-Branch Resonators, D. D. Erickson, William W. Durgin, C. F. Maguire Iii, M. J. Moeller

Office of the Provost Scholarship

High velocity flow past the junction of a side branch with a pipe can result in the excitation of depth-mode standing waves in the branch. The shear layer separating the main stream flow and the cavity provides coupling between the driving and the driven flow. Photographic evidence indicates that large scale vortex structures develop at the shear layer. The vortex formation process involves strongly non-linear instability of the shear layer and may be characterized as a non-linear fluid mechanical oscillator. The standing wave system formed in the cavity is essentially an acoustic wave system of nearly linear character. The principle …

Acuta Enews December 1986, Vol. 15, No. 12

ACUTA Newsletters

In This Issue

Loyola University, New Orleans

Party Line

Region IV Hosts Seminar

Making the Phone Into a P.O. Box

Michael Toner Is First Recipient of Portfolio Award

Telecommunications Technology Seen Outpacing AI

Iupac 7th International Symposium On Cationic Polymerization And Related Processes, Otto Vogl, Dietmar Lohmann

Otto Vogl

No abstract provided.

Centers Of Polymer Chemistry In Czechoslovakia 1: Institute Of Macromolecular Chemistry, Prague, Czechoslovakia, Otto Vogl, Vladimir Kubanek, Jan Sebenda

Otto Vogl

No abstract provided.

Polarizing Beam Splitters For Infrared And Millimeter Waves Using Single-Layer-Coated Dielectric Slab Or Unbacked Films, R. M.A. Azzam

Electrical Engineering Faculty Publications

No abstract provided.

Response Of The Rotating-Detector Ellipsometer To Incident Partially Polarized Light, R. M.A. Azzam

Electrical Engineering Faculty Publications

No abstract provided.

A Checklist And Sample Specifications For Single And/Or Tandem Axle Dump Trucks, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This publication is a revision to the February 1983 publication of the same title and contains a checklist and sample specifications to assist Indiana's Local Public Agencies in the procurement of dump trucks for use in the maintenance of local roads and streets. Most LPA's do not purchase such equipment in large numbers, hence many do not have highly qualified and experienced staff to assist in the development of the specifications for purchasing new equipment.

This checklist and the sample specifications provide for individual preferences. They are not intended to dictate decisions or restrict bidding. If followed, they will assure …

Discussion Of "Lime-Enhanced Reduction Of Sulfide Concentrates: A Thermodynamic Discussion", Arthur E. Morris, Harry Flynn

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Status Report For Selected Projects Containing Experimental Features, Kentucky Transportation Research Program

Kentucky Transportation Center Research Report

Projects containing experimental features or innovative concepts were selected for long-term monitoring and are reported herein. Certain projects are recommended for more intensive investigation under other appropriate ongoing studies.

Cooling With Ventilation, Florida Solar Energy Center, Subrato Chandra

FSEC Energy Research Center®

In keeping with the national energy policy goal of fostering an adequate supply of energy at a reasonable cost, the United States Department of Energy (DOE) supports a variety of programs to promote a balanced and mixed energy resource system. The mission of the DOE Solar Building Research and Development Program is to support this goal by providing for the development of solar technology alternatives for the buildings sector. It is the goal of the Program to establish a proven technology base to allow industry to develop solar products and designs for buildings that are economically competitive and can contribute …

Multistep Measurement Of Plantar Pressure Alterations Using Metatarsal Pads, An-Hsiung Chang, Ziad U. Abu-Faraj, Gerald F. Harris, Joe Nery, Michael J. Shereff

Biomedical Engineering Faculty Research and Publications

Metatarsal pads are frequently prescribed for nonoperative management of metatarsalgia due to various etiologies. When appropriately placed, they are effective in reducing pressures under the metatarsal heads on the plantar surface of the foot. Despite the positive clinical reports that have been cited, there are no quantitative studies documenting the load redistribution effects of these pads during multiple step usage within the shoe environment. The objective of this study was to assess changes in plantar pressure metrics resulting from pad use. Ten normal adult male subjects were tested during a series of 400-step trials. Pressures were recorded from eight discrete …

Metal Waveguide Modeling Of Tapered Quadratic Index Media, Lee W. Casperson, Bahram Zandi

Electrical and Computer Engineering Faculty Publications and Presentations

The basic electromagnetic properties of tapered graded index fibers are equivalent to the properties of a class of concave metallic waveguides. Although useful in their own right, such metal waveguides also provide a straightforward and inexpensive means for studying the characteristics of more complicated tapered media.

The Mg-Sb System, A. A. Nayeb-Hashemi, J. Beverley Clark

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Optimal Groundwater Mining Methods, Richard C. Peralta, Krzysztof G. Kowalski

Civil and Environmental Engineering Faculty Publications

No abstract provided.

A Dynamic Study Of The Effect Of Cationic Starch Molecular Weight And Charge On Filler And Fines Flocculation, Deflocculation, And Reflocculation, Bob Shian-Hou Ching

Masters Theses

A modified laboratory instrument was used to dynamically monitor the flocculation of fines and filler under various shear conditions on the "seconds" basis. A three-way factorial design and ANOVA were used to evaluate the significance of cationio starch molecular weight and charge in affecting fines and filler flocculation, deflocculation, and reflocculation. The reduction of molecular weight under high shear was suggested by the results. Both main effects and interaction effects of charge and molecular weight were important in determining flocculation. Charge was the only significant factor for the reflocculation process. Molecular weight was more important than charge in imparting shear …

Second Generation Hybrid Image-Coding Techniques, M. Reha Civanlar, Sarah A. Rajala, Wonrae M. Lee

Sarah A. Rajala

Recently, ways to obtain a new generation of image-coding techniques have been proposed. The incorpordtion of the human visual system (IIVS) models and tools of the image analysis, such as segmentation, are two defining features of these techniques. In this paper, an application of the new approach to the classical linear predictive coding (LPC) of images and an HVS based segmentation technique for the second genera-tion coders will be discussed. In the case of LPC, the error image is encoded using an image decomposition approach and binary image coding. This improves the compression ratio keeping the quality nearly the same. …

Implementation Of A Projection Onto Convex Sets Iteration Based Image Coder, M. Reha Civanlar, Sarah A. Rajala, Thomas K. Miller

Sarah A. Rajala

Projection onto convex sets iteration based image coding, where efficiently encodable sets are used to describe an image, is a recent approach to image compression. The technique allows the use of a variety of sets to encode an image. The focus of this paper, however, will be on two particular sets: the set of images whose cosine transform is known for certain frequencies and the set of images which are nonzero over a specified region. These sets can be used to encode interframe difference pictures of video teleconferencing images. A drawback of this new type of codec is its computational …