Digital Commons Network^™

The Design Of Passive Solar Heating Systems, Gordon L. Moore

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The many facets of passive design are spelled out in a series of design choices. Starting with the surrounding elements and their effects on the building's energy uses, the procedure moves inward through the envelope, finally considering the thermal dynamics of the structure and its construction materials.

Human Resources In Electrical Energy Conservation, Tom Day

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

With America's increasing inability to produce, secure and conserve its own energy resources, many social and technical changes will have to take place in order to shift the tide of events from an increasing dependence upon foreign imports of energy stocks. The first change which must take place is within us: To be aware of the need and impetus to conserve energy of all forms so that we may buy time in which to properly assess where we are going, how we are going to achieve energy independence and once we get there, how it will be managed. Electrical energy …

De Facto Limits To Growth: Federal Environmental Policy And Domestic Energy Development In The United States, Richard H. K. Vietor

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper argues that public environmental policy, since 1969, has imposed de facto limits on the growth of America's economy. A plethora of regulations, in response to widespread public resistance to industrial growth, has already circumscribed energy developments to the point of inertia. These national policies reflect changed public values, the implications of which should be acknowledged and evaluated by corporate and governmental energy planners and by the energy consumer as well.

Analytic Modeling Of Gain‐Switched Lasers. Ii. Laser Amplifiers, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

The pulse transfer characteristics of gain‐switched laser amplifiers are investigated analytically. New closed‐form solutions have been obtained including arbitrary space‐ and time‐dependent pump distributions. The general results are specialzied to the important cases of uniform and traveling‐wave excitation. Input‐pulse shapes considered include step functions, practial oscillator output pulses, and also the inherent spontaneous‐emission noise. The results lead to improved models for pulse amplifiers and mirrorless traveling‐wave lasers. By proper choice of pump characteristics arbitrary output‐pulse waveforms can be synthesized.

Modulated Generalized Ellipsometry, R. M.A. Azzam

Electrical Engineering Faculty Publications

We extend ellipsometry to the direct measurement of small perturbations of the Jones matrix of any linear nondepolarizing optical sample (system) subjected to a modulating stimulus such as temperature, stress, or electric or magnetic field. The methodology of this technique, to be called Modulated Generalized Ellipsometry (MGE), is presented. First an ellipsometer with arbitrary polarizing and analyzing optics is assumed, and subsequently the discussion is specialized to a conventional ellipsometer having either the polarizer-sample-analyzer (PSA) or the polarizer-compensator-sample-analyzer (PCSA) arrangement. MGE provides the tool for the systematic study of thermo-optical, piezo-optical, electro-optical, magneto-optical, and other allied effects for both isotropic …

Computerized Conferencing And The Homebound Handicapped, Computerized Conferencing & Communications Center, Murray Turoff, Howard Gage

Computerized Conferencing and Communications Center Reports

Computer conferencing is a relatively new technique which can be applied to improve both the efficiency of education, and communication services available to the homebound handicapped. A system is currently being implemented at the New Jersey Institute of Technology which allows such individuals to engage in a written form of conversation with other individuals or groups. Here the computer stores the discus­sion and keeps track of what everyone has or has not seen, so participants can communicate at a time and pace of their choosing. There is also provision for a range of ancillary facilities such as voting, word processing, …

Constant-Rate-Of-Strain And Controlled-Gradient Consolidation Testing, C. Thomas Gorman

Kentucky Transportation Center Research Report

Controlled-gradient (CG), constant-rate-of-strain (CRS), and conventional incremental-loading (STD) consolidation testing are compared and evaluated. Undisturbed samples representing three soils common to Kentucky were used in the testing program. Settlements estimated by each testing technique were compared with settlement records from one of the sites. Results of 15 CG, 14 CRS, and 32 STD consolidation tests are shown. No significant differences were noted in values obtained from the three types of consolidation tests. Feasibility of the new test methods for routine testing is briefly discussed and recommendations were made for refinements in testing procedures.

Determination Of Lead Content In Apical Tissue Following Root Canal Obturation With Sargenti's Formula, G. Merle Hickok

Loma Linda University Electronic Theses, Dissertations & Projects

Four Stump-tail monkeys were used to help determine if the lead in Sargenti's formula diffuses out into the apical tissue while confined entirely within the root canal. In each animal two teeth were filled with Sargenti's formula 1-2 millimeters short of the radiographic apex, and two teeth were filled with gutta percha and Proco-Sol sealer for controls, making a total sample size of sixteen. The time ranged from 48 hours to 120 days. Lead analysis using the spectrophotometric method showed a higher lead content in the teeth filled with Sargenti's formula than with the gutta percha controls.

Effects Of Heavy Metals (Cadmium, Copper, And Mercury) On Reproduction, Growth, And Survival Of Brine Shrimp (Artemia Salina) From The Great Salt Lake, Karl A. Gebhardt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to report findings concerning the effects of cadmium, copper, and mercury on the brine shrimp Artemia Salina, of the Great Salt Lake. Metal toxicity was observed in relation to acute susceptibility, growth, reproduction, and hatching of the brine shrimp.

Heavy metal concentrations such as cadmium, copper, and mercury are known to be considerably higher in the Great Salt Lake than those in both freshwater and seawater. No published study has been concerned with heavy metal effects on organisms in salinities greater than seawater (35 grams per liter total dissolved solids). The experiments reported …

A Soils Data System For Kentucky, Dwight Spradling

Kentucky Transportation Center Research Report

This report discusses the development of a computerized soils data system which facilitates collection, centralized storage, and retrieval of soils data developed by engineers and scientists for projects in Kentucky. Without such a system, much soils data are essentially lost after each project is completed. This system will provide data that can conveniently be used for developing preliminary sources of information for site investigation, for preparing regional soil maps, for land use planning, and for studying new and existing empirical relationships involving soil properties and characteristics.

Various types of data systems, the design of the system to include software and …

Growth Of Saprophytic And Pathogenic Leptospira: Evaluation Of Medium, Temperature, Inoculum, And Cost, Mary A. Finn, Ronald H. Jones

Biomedical Engineering and Sciences Faculty Publications

Of four media tested, a tissue culture medium supplemented with a bovine serum albumin oleic acid complex provided the best leptospiral growth and cost efficiency.

Factors In Modeling Floridan Aquifer Recharge, Harlan Alfred Hannah

Retrospective Theses and Dissertations

No abstract provided.

Upward Water Movement In Field Cores, Larry G. Wells, R. W. Skaggs

Biosystems and Agricultural Engineering Faculty Publications

No abstract provided.

Computer Analysis Of The Flow Of A Dissociating Gas Through A Porous Matrix, David P. Lippy

Retrospective Theses and Dissertations

A computer model has been developed to analyze the flow of a dissociating gas through a porous metal matrix. The program predicts the transient temperature distributions through the coolant gas and matrix along with the pressure distribution and mass flow rate. The differential equations used in developing the program are documented in the literature of represent logical extensions of documented equations. The derivation of the finite difference equations is presented. Comparisons of experimental data with computer predictions are shown and indicate that the predictions fall within the experimental error in the data. A source listing of the computer program is …

Individual Residential Wastewater Treatment, Robert H. Mcneal

Retrospective Theses and Dissertations

No abstract provided.

Application Of Solar Energy To The Solvent Reclamation Industry, Arthur H. Litka

Retrospective Theses and Dissertations

An analysis of an operational industrial acetone reclamation system is performed to ascertain the possibility of its adaptation of solar thermal energy augmentation using fixed orientation, flat plate solar collectors. Currently, the system utilizes and oil fired heater for the thermal input. The water is heated to 185°F (85°C) and circulated through a heat exchanger which is immersed within the contaminated acetone solution. The solvent is thereby vaporized, condensed, and drawn off for reuse. Analytical models of two possible configurations utilizing a series of commercially available, flat plate solar collectors, a hot water storage tank, and an oil fired auxiliary …

System Safety In Rail Transportation, Quave Norvell Smith

Retrospective Theses and Dissertations

This thesis "System Safety in Rail Transportation," is addressed to an individual having a basic technical background but little or no experience in this field. The thesis discusses the need for and the benefits to be obtained by using system safety techniques and principles in the railroad industry. Examples of typical railroad accidents are reviewed, and it is pointed out that analysis of the hazards in the railroad industry prior to the accidents would have identified problems which eventually resulted in the accidents. The system safety approach, which was developed for use in the aerospace and aviation fields, has proved …

A Computer Simulation Of A Weapons Fire Simulator Modeled By Sceptre As An Optical Communication Channel, John James Cormack

Retrospective Theses and Dissertations

This paper presents a method of simulating various noise sources in a Weapons Fire Simulator System which has been modeled as an Optical Communication Channel. This Weapons Fire Simulator System is composed of laser transmitters mounted on weapons that fire blank cartridges, and laser receivers mounted on targets. The laser transmitter sends out 'kill' beam pulses to the target whenever blank cartridges are fired. Detection of these pulses at the target signifies a 'hit'. The entire system along with the optical communication channel is simulated in a general purpose computer program called SCEPTRE. This analysis package is an efficient means …

Factors Influencing Nitrogen Fixation By Several Woody Shrubs And Trees : Interim Report, Robert E. Mcniel

JTRP Technical Reports

No abstract provided.

A 5-Year Evaluation Of Highway Mowing Practices: Summary And Recommendations : Interim Report, D. James Morré, Jane Eberle

JTRP Technical Reports

No abstract provided.

Chemical Control Of Brush And Environmental Safety Of Roadside Vegetation Management Chemicals : Interim Report, D. James Morré

JTRP Technical Reports

No abstract provided.

Direct Tension Test Results For Some Asphalt Concretes : Technical Paper, Raymond Doran Pavlovich, William Harner Goetz

JTRP Technical Reports

No abstract provided.

Carbon Removal Of Organohalides In Drinking Water, William Ray Mccurley

Retrospective Theses and Dissertations

Drinking water samples provided by Orlando Utilities from various locations and from Florida Technological University were analyzed for organohalides. Compounds tentatively identified were 0.0024 mg/l DDT, 0.003 mg/l phosdrin, 0.00036 mg/l BHC, and 0.000095 mg/l endosulfan. These concentrations are well below recommended limits for drinking water. Two water samples were mixed with 10 mg/l of 20-40 mesh granular activated carbon, agitated for 2 minutes and then allowed to settle in the flask for 45 minutes. A reduction in the organohalide concentration varied from 25 to 98 percent of the original concentration. Also, a solution of seven common pesticides of 0.1 …

Stormwater Infiltration Thru Sewer Lines In Brevard County, Florida, Robert Earl Stubbe

Retrospective Theses and Dissertations

This is a broad study of stormwater infiltration and inflow effects on two sewer systems with an equivalent size for comparison in Brevard County, Florida. The systems are Rockledge, which is located on the highest ground in the area, and Cocoa Beach, which is located down in the local water table. Rainfall data, sewage flow, quality, and flow rates were collected from the Brevard Public Health Department, Cocoa Beach and Rockledge sewage Plants, weather stations, and the Cocoa Water plant. The data indicated minimum, or no infiltration thru the Rockledge wastewater collection system. However, infiltration thru the Cocoa Beach system …

Nitrogen Cycling In Microcosms And Application To The Biology Of The Northern Arm Of The Great Salt Lake, John C. Stube, Frederick J. Post, Donald B. Porcella

Reports

No abstract provided.

Application Of A Hydrologic Model To The Planning And Design Of Storm Drainage Systems For Urban Areas, George B. Shih, Eugene K. Israelsen, Robert N. Parnell, Jr., J. Paul Riley

Reports

A generally applicable hybrid computer program is developed to simulate runoff from urban watersheds, and is applied to represent the outflow hydrographs of three urban watersheds located within Salt Lake County, Utah. The gaged outflow of the watersheds provided a means for comparing the observed and the simulated final outflow hydrographs. Each of the three watersheds was subdivided into spatial units or subzones, and the outflow hydrographs for each subzone were obtained by abstracting interceptions, infiltration, and depression storage from the rainfall hyetograph of each subzone. The resulting hydrograph outflow of each subzone was routed to the Jordan River, the …

Bsam: Basin Simulation Assessment Model Documentation And User Manual, Utah Water Research Laboratory

Reports

No abstract provided.

Hydrologic Impact Of Burning And Grazing On A Chained Pinyon-Juniper Site In Southeastern Utah, Gerald F. Gifford, John C. Buckhouse, Frank E. Busby

Reports

No abstract provided.

Disposal Alternatives For Intermittent Sand Filter Scrapings Utilization And Sand Recovery, Jerry T. Elliott, Daniel S. Filip, James H. Reynolds

Reports

A three phase study is used to develop disposal alternatives and cost analysis for algae laden sand scrapings removed from intermittent sand filters used to polish wastewater lagoon effluent. Phase I, Irrigation Technique, explores the feasibility of supplying sufficient water to sand scrapings to leach out entrapped material. Details of removal with amount of water applied are presented. Phase II, Soil Application, tests with lysimeters soil response to application of the algae laden sand material. Physical and chemical parameters are not markedly altered where algae laden sand is applied to the soil surface. Phase III, Plant Bioassays, grew tall fescue …

Evaluation Of The Addition Of Granular Media Filtration To Wastewater Treatment Plants To Meet New Standards, Madhusudan M. Dawda, M. L. Davidson, E. J. Middlebrooks

Reports

A dual media filtration study was carried out at the central Weber Wastewater Treatment Plant in Ogden, Utah, to evaluate its feasibility as a tertiary treatment to meet new effluent quality standards. A review of the literature indicated that dual media filters were more efficient than conventional single media sand filters because of the “in depth” filtration achieved by dual media filters. An experimental filter was operated at four different hydraulic loading rates, ranging from 3 to 6 gpm/ft 2 (122.10 to 244.20 1/min/m2), to evaluate its effects on effluent quality. Hydraulic loading rate was shown not to affect suspended …