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Electronic Analog Computer Hydrologic Simulation Of The Upper Bear River Basin, Mohammed A. Basha

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

OF the total precipitation falling on watersheds throughout the world, an average of approximately 85 percent returns directly to the atmosphere through evaporation and use by mountain vegetation. The remaining 15 percent moves from the watersheds as runoff and becomes available in the valleys to be used by man for irrigation, industry, recreation, and many other requirements in recent years has led to an increasing need for efficient management of available water resources, and in this regard computer modeling or simulation has proved to be a powerful tool.

The study described herein involves simulation of the hydrologic system of the …

A Study Of Flooded And Rain Infiltration Relations With Surface Ponding, Yehia Z. El-Shafei

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The non-linear partial differential equation (combination of Darcy's law and continuity equation) has been used in this investigation to predict the flooded infiltration through soils possessing appreciable amount of clay and initially drier than its field capacity. One of the most important assumptions made in solving the differential equation is that the capillary conductivity-moisture content relationship is unique for each initial moisture content computation due to the different reaction of clay minerals with different initial moisture contents.

Mathematical equations were also derived to predict:

1. The rate of the wetting front advance, prior to the occurrence of surface ponding, taking into …

A Study Of The Reduction Of Nickel Oxide Single Crystal By Hydrogen In A High Vacuum System., Jong In Joung

Chemical and Biological Engineering ETDs

Wafers of well-characterized nickel oxide single crystal, with (110) faces, were etched in hydrochloric acid and reduced by hydrogen in a high vacuum system. Reduction took place at temperatures of 280-310°C and pressures of 1.0-1.3 torr. The reduced wafers were replicated by carbon film and the replicas were examined by an electron microscope.

A series of reduction patterns at various stages of surface change were obtained. After a period of incubation, hemispherical metallic nickel particles, about 400 A in diameter, appeared on the parent nickel oxide surface. The number of hemispheres increased but the size of the hemispheres did not …

Median Design And Accident Histories, Gordon R. Garner

Kentucky Transportation Center Research Report

The purpose of this study was to provide information concerning the accident histories of various median types to verify minimum requirements for width and cross section. Previous accident studies failed to disclose significant relationships between median width and accident rates. Those studies did not recognize or control several important variables that were controlled in the present study. The efforts here are to compare median types on rural, four-lane, fully controlled access facilities with similar geometries other than median types. An attempt was made to account for some of the Variability in the accident data. Thus, this study gives information on …

A Study Of Air Cleaners And The Effect Of Air Cleaner Design On Horsepower, Roger D. Mcculley

Graduate Research Papers

It is the purpose of this study to investigate air cleaners and the effect of air cleaner housing design, intake snorkel tube design and filter media on engine horsepower. In doing the investigation, the writer will determine how horsepower is affected by: (1) the size and shape of the intake snorkel, (2) the placement of the intake snorkel in the engine compartment, (3) the size (volume) of the air cleaner housing, (4) the type of filtering media used, (5) the size of the filter element, (6) breather holes drilled in the filter housing, and (7) a partially clogged filter element.

Field Manual Fm 55-8, Transportation Intelligence, 12 March 1970, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

Obviously, reliable information about potential enemy transportation equipment, facilities, systems, capabilities is vital, since our forces may need to prevent an enemy from using them and we may need to use them. Transportation or mobility intelligence is such reliable information. This is a very thorough document describing the collection, production, and dissemination of transportation intelligence. The emphasis of this manual is collection of relevant information in the field.

The manual describes organizations and personnel in the army responsible for collecting transportation related information. It identifies the national-level military intelligence production agencies as:

(a) The Defense Intelligence Agency (DIA) which was …

Proceedings Of The International Symposium On Low Cost Housing Problems Related To Urban Renewal And Development, Oktay Ural

International Symposia on Low Cost Housing Problems

PREFACE TO SECOND EDITION--We are very happy to have a second printing of the Proceedings of the First International Symposium on Low-Cost Housing Problems Related to Urban Renewal and Development. The rather quick and large demand of this publication proved to us, once more, the importance and timeliness of the concern on the topic of housing technology and production. The contributions from eighteen nations painted a real picture of housing conditions and needs around the world.

The fifty-one technical papers included in this volume have been selected intentionally in various aspects of housing to draw a complete and meaningful picture …

Evaluation Of The Carbon Adsorption Method With Parallel Solvent Extraction Studies, Stanley Kent Wagher

Masters Theses

"In spite of the importance of the carbon adsorption method (CAM) in determining drinking water quality and its wide use in research and plant control studies, little work has been undertaken to quantitatively and qualitatively evaluate the method, especially under field conditions. This investigation was, therefore, undertaken in order to develop a test system consisting of equipment and procedures which would make possible the field evaluation of the carbon adsorption method by parallel solvent extraction studies, and to employ this system in preliminary field investigations to establish guidelines for the experimental conditions required for its effective application. The test system …

An Analysis Of A Quadrature Double-Sideband/Frequency Modulated Communication System, Denny Ray Townson

Masters Theses

"A QDSB/FM communication system is analyzed with emphasis placed on the QDSB demodulation process and the AGC action in the FM transmitter. The effect of noise in both the pilot and message signals is investigated. The detection gain and mean square error is calculated for the QDSB baseband demodulation process. The mean square error is also evaluated for the QDSB/FM system. The AGC circuit is simulated on a digital computer. Errors introduced into the AGC system are analyzed with emphasis placed on nonlinear gain functions for the voltage controlled amplifier"--Abstract, page ii.

Anodic Dissolution Of Zinc In Potassium Bromide-Potassium Bromate Solutions, Ying-Cheh Chuang

Masters Theses

"The purpose of this investigation was to study the anodic dissolution of zinc at a temperature of 25°C in Br⁻-BrO₃; solutions. In Br⁻ solutions, it was found that the apparent valences of zinc ions going into solution were approximately the normal value of two. Smaller values were obtained in BrO⁻₃ solutions, with the most pronounced changes occurring in the higher concentrations of BrO⁻₃. An empirical equation was derived relating the apparent valence (z_i) to the current density (amp·cm⁻²) and BrO⁻₃ concentration (gmol/liter): 2- z_i = 3.11 X i⁰̇̇¹³(C_BrO⁻₃)⁰̇⁵⁷ The mechanism for the dissolution of zinc …

The Failure Criteria And Deformational Moduli Of Granular Rock, Kyung Chul Ko

Masters Theses

"Analytical solutions of stress for composite material are obtained by means of mathematical theory of elasticity, assuming spherical inclusions and uniform displacements of boundaries of representative elements. These solutions show that the failure criteria of composite materials are complicated functions of the elastic moduli of matrix, inclusion and composite, and the volume ratio of matrix and inclusion. Combining this theory with Griffith's theory gives a new criteria for brittle failure of granular rook. This theory appears to provide a nearly perfect model for granular rooks, inasmuch as: a) most assumptions used in other criteria are eliminated, b) most phenomena in …

A Study On The Feasibility Of Using Pipelines For The Collection And Transportation Of Urban Solid Wastes, William Leo Sago Jr.

Masters Theses

"This study was conducted to determine the technological feasibility of using a tube transport (pipeline) system to supplement and partially eliminate the present inadequate solid waste collecting and transporting techniques employed in most cities throughout the United States. Specific objectives were to develop a practical pipeline system for the transport of refuse by means of a fluid and to determine the uniformity of composition of refuse. The hydrodynamic characteristics of each transport medium, water and Chemical Emulsion., W-4088, were to be determined also. Another item of interest was the degree of grinding necessary to transport refuse by pipeline. An experimental …

Time And Load Independent Properties Of Bituminous Mixtures: Technical Paper, S. A. Swami, William Harner Goetz, Milton Edward Harr

JTRP Technical Reports

No abstract provided.

Formulation And Solution Of Transient Flow Of Water From An Infiltrometer Using The Kirchhoff Transformation, Roland W. Jeppson

Reports

No abstract provided.

Transient Flow Of Water From Infiltrometers--Formulation Of Mathematical Model And Preliminary Numerical Solutions And Analyses Of Results, Roland W. Jeppson

Reports

The partial differential equation initial-boundary value problems which describe the three-dimensional axisymmetric flow of water from an infiltrometer through partially saturated soil are solved by finite differences using the alternating direction implicit method. Pertinent features which describe the flow characteristics obtained from 34 solutions for varying initial conditions and for 12 soil types are summarized in tables and figures. Relationships between such features as depth of penetration and lateral movement of the wetting front and rate of application and initial hydraulic head or tension in the soil are developed for several of these soils types from analyses of the results.

Solution To Transient Vertical Moisture Movement Based Upon Saturation--Capillary Pressure Data And Modified Burdine Theory, Roland W. Jeppson

Reports

Using finite differences and the Crank-Nicholson implicit scheme for solving parabolic type partial differential equations, a computer program has been developed for solving the one-dimensional, vertical movement of water in soils. The formulation of the initial boundary value problem is obtained by introducing a new dependent variable through the Kirchoff transformation to replace the hydraulic head. Data relating saturation (or moisture content) to the capillary pressure in the soil are used to define the hydraulilc properties of the soil which are needed in order to obtain a solution. The Burdine Theory has been implemented in the program to obtain the …

Computer Simulation Of The Hydrologic-Salinity Flow System Within The Upper Colorado River Basin, M. Leon Hyatt, J. Paul Riley, M. Lynn Mckee, Eugene K. Israelsen

Reports

Changes in the hydrologic equilibrium of a river basin resulting from resource development also produce changes in the quality pattern. Since the burden of quality maintenance must be shared by users (just as are quantities) predictions are needed for quality changes which might result from contemplated development at any specified location within the river system. This study reports the development of a computer simulation model of the water and salt flow systems within the Upper Colorado River basin. Because of the close relationship between the hydrologic and salinity flow systems, an understanding of the hydrologic system is essential to successful …

A Hydrologic Model Of The Bear River Basin, Robert W. Hill, Eugene K. Israelsen, A. Leon Huber, J. Paul Riley

Reports

As demands upon available water supplies increase, there is an accompanying increase in the need to assess downstream consequences resulting from changes at specific locations within a hydrologic system. The problem is approached in this study by hybrid computer simulation of the hydrologic system. Modeling concepts are based upon the development of basic relationships which describe the various hydrologic processes. Within a system these relationships are linked by the continuity-of-mass priciple which requires a hydrologic balance at all points. Spatial resolution is achieved by considering the modeled areas as a series of subbasins. The time increment adopted for the model …

Bacterial Absorption On Soils--Thermodynamics, David W. Hendricks, Frederick J. Post, Deorao R. Khairnar, Jerome J. Jurinak

Reports

Laboratory studies on the adsorption of bacteria onto soils and activated carbon were undertaken to evaluate the role of the process in removal of bacteria from groundwater. It was hypothesized that removal of bacteria from water passing through soil would be primarily due to adsorption in which case the bacteria would behave in a manner similar to colloidal particles or chemical molecules. The basic kinetics of uptake of Staphylococcus aureus were determined on activated carbon, a highly adsorbing material chemically speaking. Once the technique was worked out and adsorption demonstrated to take place, sand, clay, and Mendon silt loam were …

Publications Of The Utah Water Research Laboratory, Utah Water Research Laboratory

Reports

No abstract provided.

The Function Of Social Behavior In Water Resource Development , Wade H. Andrews, Dennis C. Geertsen

Reports

Preface: This report is an analysis of a social survey of the middle and lower Bear River Basin of southeastern Idaho and northern Utah concerning the problem of water resource development in a semiarid region of the Western United States. The survey part of the study, carried out in the summer of 1966, dealt with both general social factors and a specific proposal made by the Bureau of Reclamation for developing water resources of the Bear River. In many respects this proposal and the resulting behavior is typical of other western river basin projects, in some other ways, however, it …

A Theoretical Study Of Infiltration Into Range And Forest Soils, Joel E. Fletcher, Yehia Z. El-Shafei

Reports

More than 400 rainfall simulator experiments were examined to detect which soil properties could be used to computer infiltration time relationships. Three theoretical equations were tested to determine their efficacy for calculating infiltration time relationships from soil and site characteristics. It was shown that both the modified Green and Ampt and Fletcher equations could by successfully used. Darcian type equations were developed on laboratory type samples which would show the relations between soil, solution and rainfall properties and infiltration. These latter equations have not been tested on undisturbed soils but give excellent agreement between measured and computed values for time …

Heat Transfer Through A Spherical Gas Shell, Adel Nassif Saad

Masters Theses

"The radiative transfer through an absorbing-emitting gas shell contained within black concentric spheres at uniform but different temperatures was investigated. A close form exact solution and an approximate solution were derived for the case of isothermal gas layer. The two solutions appear to compare well specially at low diameter ratios, and both agree with the radiative equilibrium solution in the thin limit. An approximate method was developed for the radiative equilibrium, non-isothermal gas layer, of the above problem. The method is based on the assumption of a hyperbolic emissive power distribution through the gas shell. The jump boundary conditions were …

Electrode Reactions In Zinc Electrolysis, Ernest R. Cole

Doctoral Dissertations

"The effects of temperatures from 0°C to 50°C and current densities from 10 asf to 200 asf on the current efficiency in the electrolysis of pure zinc sulfate solutions (65 gpl Zn⁺⁺ - 200 gpl H₂SO₄) were determined. Pure platinum and platinum coated titanium anodes were used with an aluminum cathode. Platinum anodes were not inert at certain combinations of temperature and current density, and platinum acted as a low overvoltage impurity causing resolution of the cathode deposit. Orientation of the zinc deposits was found to vary with temperature and to have a distinct relationship to current efficiency. Preconditioning of …

Higher Space Mode Analysis Of A Large Cylindrical Pulsed H₂O System, Harold David Hollis

Doctoral Dissertations

"By utilizing a geometrically centered pulsed source internal to a large (B²_g) ≈ 0.002) cylindrical H₂O system, the neutron flux was measured as a function of position and time. A least square fit of the data yielded the fundamental and five higher decay constants and amplitudes of the thermal neutron flux. Symmetrical and enhanced neutron densities were obtained as a result of the internal source. Long waiting times were unnecessary and data acquisition was accelerated.

The decay constants were found to be independent of position, pulse width, counting time and rates, method of normalization, or waiting time. …

A Study Of The Anodic Oxidation Of 1, 3-Butadiene On Platinum And Gold Electrodes, Arun Kumar Agrawal

Doctoral Dissertations

"The anodic oxidation of 1,3-butadiene on Pt and Au electrodes was studied at 70°C in solutions of H₂SO₄, K₂SO₄, K₂CO₃, and KOH with pH's ranging from 0.35 to 12.5. Reaction rates (current) were measured as a function of potential, pH, temperature, and butadiene partial pressure. A transition region (apparently a shift in the rate determining step) in case of Pt was observed in the Tafel plots. The coulombic efficiencies of oxidation to CO₂ were 85 percent in 1 N H₂SO₄ on Pt, 93 percent in 1 N KOH on Pt, and 72 percent in 1 N KOH on Au"--Abstract, Page …

Numerical Simulation Of Forward Combustion In A Radial System, Tommie C. Wilson

Doctoral Dissertations

"A generalized mathematical model is described for the thermal recovery of oil in a radial system in which there are conductive heat losses to the surrounding formations, three phase fluid flow, conductive-convective heat transfer within the producing formation, combustion, and aqueous-phase changes considered. The mathematical form of the temperature equation requires that numerical solutions be obtained with a digital computer for which the numerical approximations of the partial differential equations are presented and the results discussed. The analysis is applied to field size simulations of a forward combustion project to permit direct field analyses of significant importance for accurate reproductions …

Determination Of Reservoir Characteristics From Capillary Pressure Curves And Electrical Properties Of Rocks, Prasanta Kumar Guharoy

Masters Theses

"Based upon the assumptions that a porous medium is analogous to a bundle of capillary tubes and that there is equivalence of electrical and hydraulic tortuosity in a porous medium, empirical expressions are presented which relate capillary pressure data and electrical properties of the rock to the porosity, permeability and relative-water permeability, respectively, of completely water-wet rocks. Experimental data are presented for comparison in order to verify their validity. Three principal models are presented, each of which is characterized by a particular expression for estimating tortuosity. The method of determining this parameter was varied in order to find the form …

Penetration In A Graded Filter, William Chuan Shen

Masters Theses

"An experimental laboratory study conducted to examine clogging within and penetration of fines into a single layer graded filter. Hydraulic gradient, filter gradation and flow direction were varied. Forty one tests gave over six hundred individual penetration depths. The magnitude of penetration in filters with considerable variation in gradation patterns correlated with an average hydraulic radius based on the volume of voids and an approximated total surface area. It has been shown than an increased thickness of poorly graded filter will stop penetration such as that caused by seepage erosion. A relationship between hydraulic radius, penetration depth and probability of …

Linear Analysis Of Pneumatic Dashpot Damping, Nathalal Gordhanbhai Patel

Masters Theses

"The linear analysis of pneumatic damping with orifice or capillary restrictions and with or without mean flow is presented. Temperature and pressure relationships are derived from energy considerations rather than the usual simplification of an assumed polytropic coefficient. Analytical results are compared with the experimental results and a coefficient of heat transfer, C_h, is defined for calculation of the equivalent linear damping factor C_d"--Abstract, page ii.