Engineering Commons^™

Energy Impacts Of Water Based Recreation, J. Clair Batty, David A. Bell, E. Bruce Godfrey, Craig Howell, J. Paul Riley, Thomas C. Stoddard

Reports

The overall objective of the study reported here was to determine to what extent energy accounting could supplement and/or complement economic benfit/cost analyses of water management projects and to specifically examine the energy impacts of water based recreation. The energy accounting literature was carefully reviewed and an energy accounting methodology applicable to water management was devised. Data pertaining to receation at five reservoirs in Utah were assembled from visitation recoreds and on-site surveys. Energy requirements for site construction, travel to and from the recreation site, and recreation at the site were estimated. It was determined that energy devoted to water …

Predicted Limnology Of The Proposed Ridges Basin Reservoir, Lawrence A. Baker, V. Dean Adams

Reports

A limnological evaluation was conducted for the offstream Ridges Basin Reservoir proposed by the Bureau of Reclamation in southwest Colorado. The study required the determination of existing water quality in the source river and use of the information to predict the algal standing crop, hypolimnetic oxygen deficity, Secchi disk transparency, and retention of metals in the proposed reservoir. A water quality study was conducted between May 1977 and August 1978. Samplse were collected from the Animas River, which will provide the inflow to the proposed reservoir, and from the La Plata River, which will receive discharge from the reservoir. Samples …

Sprinkler Application Of So2 - Treated Groundwater At The Sandarosa Farm, Snowville, Utah, V. Dean Adams, Craig S. Criddle

Reports

Sulfur is recognized as one of the essential elements for plant growth. It has also been used in agriculture for reclamation of saline and sodic soils. During the reclamation process there is the potential benefit of increased availability of phosphorus and certain micro-nutrients for plant uptake. There is also potential for increased infiltration thus increasing water utilization efficiency.

Sulfur has been applied to soils in a flake or nodule form, by the addition of sulfuric acid and most recently by the application of sulfurous acid. The raw sulfur addition technique is accomplished by spreading raw sulfur on the soil and …

Removal Of Nitrogen From Secondary Wastewater Effluent Through No 3-N Reduction Using Sulfur Dioxide (So2), Javid Ghorashian, V. Dean Adams, Dennis B. George

Reports

The overall purpose of this study was to evaluate the ability of sulfur dioxide (SO2) to remove nitrate-nigrogen (i.e., reduction to a gaseous form) from the secondary wastewater effluent. To accomplish th above task, a jar test procedure was established and the concentration of NO3-N along with the concentration of NH3-N present in the secondary wastewater, treated with SO2, were measured initially and after 10 min, 20 min, 30 min, 40 min, and 24 hr. Then, the percent NO3-N removal was calculated, comparing the NO3-H concentrations measured in each treatment with the initial values. The above procedures were conducted for …

Guidelines For Minimizing Salinity Buildup In Groundwaters Of Utah, Edward P. Fisk, Calvin G. Clyde

Reports

In arid Utah practically all of the replenishable surface water supplies are nearly fully developed. At least some groundwater resources are being used in every basin. Groundwater use is expanding throughout the state and in some areas the draft is nearly equal to the sustained yield. Irrigated agriculture is the major water user. Multiple reuse of water is common in many areas, but as salinity increases with each cycle of usage, salinity also is usually the limiting factor for usefulness. Effective control of salinity buildup will permit more efficient and more extensive use of the state’s waters with potentially large …

Reverse Osmosis In The Treatment Of Drinking Water, R. Ryan Dupont, Talbert N. Eisenberg, E. Joe Middlebrooks

Reports

An extensive review of the literature was conducted and results were evaluated for the use of the reverse osmosis process in the treatment of drinking water supplies. All aspects of reverse osmosis technology, including pretreatment requirements; membrane type and configuration; membrane cleaning and maintenance; and reverse osmosis removal of organics, inorganics, and microbial contaminants were incorporated inot the literature evaluation. A survey (Appendix E) of existing full scale reverse osmosis installations was also carried out and results of the survey are discussed. In light of data presented in the literature and results of the survey conducted, the following recommendations were …

Evaluation Of Microcosms For Determining The Fate And Effect Of Benz(A)Anthracene In Aquatic Systems, Judith G. Dickson, V. Dean Adams, Dennis B. George

Reports

Small scale, three-phase microcosms were used to study the aquatic fate and effect of a polycyclic aromatic hydrocarbon (PAH), benz(a)anthracene. This compound was chosen as a model for carcinogenic PAH because it is a typical constituent of petro-chemical effluents and has middle-of-the-range physical and chamical characteristics. In a series of experiments, techniques were established for monitoring the behavior and for assessing the biological response to the pollutant. Results indicate taht benz(a)anthracene has no acute effect on aquatic organisms as indicated by the parameters used to measure community structure and function (gas productivity, nutrient utilization, biomass accumulation, and species composition). Gas …

Hydraulics And Numerical Solutions Of Steady-State But Spatially Varied Debris Flow, Alfredo A. Deleon, Roland W. Jeppson

Reports

Debris flow is a natural phenomenon triggered by special conditions that combine: high intensity rainfall, material available for transport, slopes steep enough to induce flowage, and insufficient protection of the ground by vegetation and/or other erosion control means. These conditions are very common in semiarid and arid regions in Utah, other Western states and many other parts of the globe. Previously, the two models proposed to solve debris flow are the Bingham plastic model and the dilatants model. Both these models depend upon coefficients that are not easy to obtain. Therefore, they are not very useful in practice. According to …

Site Report ,Stage One : Site Reports On Kevin Street And Camden Row Sites, Mackenna Brook Architects, O'Connor Kavanagh & Partners, Structural Consultants, Macardle, Mcsweeney & O'Malley, Mechanical And Electrical Consultants, Seamus Monahan & Partners, Quantity Surveyors

Buildings

Report produced to quantify the cost difference between the Kevin Street and Camden Row sites.

Contains architect's, quantity surveyor's, structural, mechanical and electrical engineer's reports.

Note : Date is approximate

A Potential Problem With The Tsi Electrostatic Aerosol Classifier, Darryl J. Alofs, Max B. Trueblood

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

Optical Filtering Element, Gary Edward Mueller, Timothy D. Ziebarth

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

Optical filtering elements having two opposed surfaces and including at least one thin layer of stable non-reflective fluorescent material provide transparent articles which, when exposed to incident electromagnetic radiation at one surface of the fluorescent layer, absorb certain wavelengths within the fluorescent layer and emit other wavelengths at the opposed surface of the fluorescent layer. In preferred embodiments, when radiation (light) in the visible range (about 400 nm to about 700 nm) is incident on the element from one side, certain wavelengths of radiation which transverse the element are absorbed in the fluorescent layer and other radiation of greater, but …

Optical Filtering Element Including Fluorescent Material, Gary Edward Mueller

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

Optical filtering elements having two opposed surfaces and including at least one thin layer of stable non-reflective fluorescent material provide transparent articles which, when exposed to incident electromagnetic radiation at one surface of the fluorescent layer, absorb certain wavelengths within the fluorescent layer and emit other wavelengths at the opposed surface of the fluorescent layer. In preferred embodiments, when radiation (light) in the visible range (about 400 nm to about 700 nm) is incident on the element from one side, certain wavelengths of radiation which transverse the element are absorbed in the fluorescent layer and other radiation of greater, but …

Deposition Of Cdte By Spray Pyrolysis, Jack L. Boone, Thomas P. Van Doren, Alok K. Berry

Electrical and Computer Engineering Faculty Research & Creative Works

We report the spray pyrolysis of thin films of CdTe which show promise as a base material for solar cell applications. The films predominately show a zinc blende structure and appear to be intrinsic. Microprobe analysis indicates an excess of cadmium but this is not detectable by X-ray diffraction or from electrical conduction measurements. Measurements indicate a nominal direct bandgap of 1.47 eV and an absorption coefficient of the order of 104 cm−1. The room temperature electrical resistivity is of the order of 107 Ω cm.

An Optimal Control Law By Eigenvalue Assignment For Improved Dynamic Stability In Power Systems, A. B.R. Kumar, Earl F. Richards

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

An Optimal Control Law By Eigenvalue Assignment For Improved Dynamic Stability In Power Systems, A. B.R. Kumar, Earl F. Richards

Electrical and Computer Engineering Faculty Research & Creative Works

Whenever control laws are computed on the basis of linear optimal control theory and implemented on non-linear systems, such as power systems, the performance is not as good as expected because of saturation type non-linearities in the system components. The only way to ensure that a control law is adequate, short of actually testing the real system, is to observe the simulated behavior of the system. Departure between a calculated linear control law and the actual response can be minimized by (a) computing a feedback control law with gains of small magnitudes to achieve a pre-assigned set of eigenvalues for …

Conversion And Matched Filter Approximations For Serial Minimum-Shift Keyed Modulation, Carl R. Ryan, James H. Stilwell, Rodger E. Ziemer

Electrical and Computer Engineering Faculty Research & Creative Works

Serial minimum-shift keyed (MSK) modulation, a technique for generating and detecting MSK using series filtering, is ideally suited for high data rate applications provided the required conversion and matched filters can be closely approximated. Low-pass implementations of these filters as parallel inphase-and quadrature-mixer structures are characterized in this paper in terms of signal-to-noise ratio (SNR) degradation from ideal and envelope deviation. Several hardware implementation techniques utilizing microwave devices or lumped elements are presented. Optimization of parameter values results in realizations whose SNR degradation is less than 0.5 dB at error probabilities of 10-6. © 1982 IEEE

Development Of A Friction Element For Metal Forming Analysis, W. D. Webster, Robert L. Davis

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A three-dimensional finite element friction element has been developed. The friction element has been used in the analysis of round-to-square forward extrusion.Comparison with some limited experimental data is presented. © 1982 by ASME.

A Mathematical Model Used In Conjunction With A Finite Element Analysis To Aid In The Design And Analysis Of Bourdon Tubes, R. C. Weber, Robert L. Davis

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A mathematical model that describes a variety of Bourdon tube geometries has been used for the three-dimensional analysis of Bourdon tubes. The variation of the stresses and tip deflections with respect to the variables used in the mathematical model are then presented as an aid in the design and analysis of the Bourdon tube. The finite element program represents a user-orientated package for calculation of tip deflections and stresses. Stresses and deflections are compared to both strain gage data and instrumented tip deflections as well as published data to establish the credibility of both the model and computer program. © …

Applying Software Complexity Metrics To Program Maintenance, Kenneth Magel, Raymond Michael Kluczny, Warren A. Harrison, Arlan R. Dekock

Business and Information Technology Faculty Research & Creative Works

No abstract provided.

H & V News

Building Services Engineering

No abstract provided.

Measurement Of The Wear Properties Of Metallic Solids With A Falex Lubricant Testing Machine, Edward Boyd Hale, Chun-Ping John Meng, Ronald A. Kohser

Physics Faculty Research & Creative Works

A modified Falex Lubricant Testing Machine has been used to determine wear properties of metallic solids. In particular, wear mass loss, wear volume loss, wear rates, and other parameters have been determined for a basic steel, as heat treated and after ion implantation. Wear rate improvements of more than an order of magnitude were found in a nickel-chrome steel (SAE 3135) implanted with 2.5x10¹⁷ N⁺₂/cm². Wear tests were conducted with a cylinder-in-groove geometry in a mild lubricating oil with loads greater than 540 N, which corresponded to pressures which exceeded 10⁸N/m^{2 …}

Effects Of Varying Oxygen Partial Pressure On Molten Silicon-Ceramic Substrate Interactions, And Oxygen Partial Pressure Measurements Of Silicon Sheet Production Facilities, P. D. Ownby, Harold V. Romero

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Industrial Safety And Technologicalization: An Analysis Of The Management Of Industrial Safety Programs In Saudi Arabia, Abdulla Rashad Jastaniah

Dissertations and Theses @ UNI

The problem of this research was to determine the present industrial safety measures in selected Saudi Arabian industries, and to determine the status of government activity and involvement in industrial safety.

The procedural methods that were incorporated in this research were:

1. An intensive review of the literature was conducted concerning the management principals and theories of industrial safety programs.
2. Two data collection instruments were designed. The questionnaire was designed to determine: (a) the status of industrial safety procedures, (b) the practices of management regarding safety, and (c) the extent of management acceptance of responsibility for industrial safety in accordance with …

Separation Technique On Proteins Via A Ph-Parametric Pump : A Theoretical And Experimental Study, Ura Pancharoen

Dissertations

The separation of protein mixtures via pH-parametric pumping was investigated both theoretically and experimentally. A simple system consisting of one column packed either with cation or anion exchanger was first considered. A system of parapumps was then developed with more columns which were connected in series and packed alternately with cation and anion exchangers. Various methods of operation of parapumps are discussed. Enrichment and spliting of protein mixtures were examined. In most cases, the separation factor was defined at a steady state condition and was improved by increasing the number of cycles and columns.

Computational methods for predicting both Batch …

Polarimeter, Rasheed M.A. Azzam

University of New Orleans Patents

To measure characteristics such as density and particle-size distributions of a medium that interacts with light, a polarimeter simultaneously develops all 16 elements of the Mueller matrix by modulating polarized monochromatic light with a quarter-wave retarder operating at a predetermined frequency before transmitting it to the medium and then modulating the light leaving the medium with another quarter-wave retarder which operates at a frequency five times that of the predetermined frequency of modulation of the light transmitted to the medium. The light is electrically detected and provides a signal which may, by Fourier analysis, be broken into 25 terms. The …

Religion, Technology, And Modernization In Islamic Developing Countries: A Case Study Of Pakistan, Nizamuddin Syed

Graduate Research Papers

Pakistan is one of the Islamic developing countries, and since its independence in 1947 the leaders and administrators of this country have adopted different constitutions to pave the way for modernization. President Ayub Khan of Pakistan not only tried to change the traditional thinking of his countrymen, but also toured the Middle Eastern Islamic countries to urge a reformist revival in Islam (Abbott, 1968).

Religion, technologicalization, and modernization are elements of a controversial issue which has been brought un and discussed among the religious functionaries and polity of Pakistan. The issue is, what should be the role of Islam in …

Passive Cooling And Human Comfort, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

Comfort within buildings is primarily controlled by four major factors: air temperature, mean radiant temperature, humidity and airflow. Each can have a dominating effect. Their effects are not necessarily additive and practically never linear. There are, additionally, other factors which affect comfort including clothing, activity level and climatization. Some psychological triggers, such as certain colors, also seem to affect comfort, and "state of mind" can have major effects on individual comfort sensations. Comfort zones, therefore, are very generally defined as the zone in which 80 percent of the population will experience the sensation of thermal comfort.

Users' Manual For The Electronic Information Exchange System, Computerized Conferencing & Communications Center, Elaine B. Kerr, Murray Turoff, Peter Johnson-Lenz, Trudy Johnson-Lenz

Computerized Conferencing and Communications Center Reports

The purpose of this manual is to teach you the simpler parts of the system and make you comfortable with using the one-page User's Guide. As you gain more experience with the system, you may wish to learn some of the advanced features available. But EIES (pronounced "eyes") has been designed so that you don't need to learn more than meets your needs.

Since the best way to learn how to use a computer system is by direct experience, don't be discouraged if some of this manual is confusing at first. The most effective way to learn is to try …

Silicon As A Millimeter-Wave Monolithically Integrated Substrate - A New Look, Arye Rosen, Martin Caulton, Anna M. Gombar, Walter M. Janton, Chung P. Wu, John F. Corboy, Charles W. Magee

Henry M. Rowan College of Engineering Departmental Research

Materials suitable for use as monolithic substrates are summarized. A study of the properties of silicon substrates as transmission line media shows that serious consideration should be given to them for use at mm-wave frequencies. It is concluded that for silicon resistivities of 2000 ohm-cm or greater, microstrip loss in silicon at mm-wave frequencies is only slightly higher than that in GaAs or alumina. The cross section width of a transmission line represents an appreciable part of a wavelength when microstrip is used as an impedance transformer at mm-wave frequencies. Therefore, substrate thickness (using the latest dispersion characteristics) is especially …

Energy In Agriculture: Energy Resource Series For Youth And Adult Energy Programs: 11. Geothermal, George M. Turner

Agricultural Engineering Energy Series

Geothermal energy or earth heat has the potential of becoming the foremost source of energy during the next few decades just as the fossil fuels have been for the past 75 years. This source is so great that it is limitless, unlike the fossil or nuclear fission fuels. Yet there are formidable problems in the application of geothermal energy for useful work.