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Articles 77791 - 77820 of 80245
Full-Text Articles in Entire DC Network
Simulation And Analysis Of Stream-Aquifer Systems, Morton W. Bittinger
Simulation And Analysis Of Stream-Aquifer Systems, Morton W. Bittinger
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
As defined for this study, a stream-aquifer system is a hydrologic system in which there is an intimate hydraulic interrelationship between one or more aquifers and a perennial stream. The objectives of this study are to better understand the response behavior of typical stream-aquifer systems, to look at the response behavior as influenced by water management practices, and to consider the problems and possibilities of integrated management of groundwater and surface water supplies within stream-aquifer systems.
A brief history of water development practices and policy, particularly in the Western United States, indicates that the tendency over the years has been …
Evaporation And Evapotransipration In Venezuela, Hidalgo Guillén Echeverría
Evaporation And Evapotransipration In Venezuela, Hidalgo Guillén Echeverría
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Equations and tables for estimating Fuess evaporation from climatological data were developed. Ten years of average records from 22 stations in Venezuela were analyzed in order to develop the equations.
Mathematical regression analysis, and plotting and computer programs were used to work out the equations. The form of the final expression for estimating Fuess evaporation is as follows:
Ev = K CRCTCWCHCDTCSCM
Pan evaporation was computed using the Christiansen, Mathison, Blaney-Criddle, Hargreaves, Penman, and Kohler formulas. The computed pan evaporation from these formulas, measured Fuess evaporation, and …
Development Of A Drainage Function For The Transient Case, And A Two-Dimensional Ground-Water Mound Study To Evaluate Aquifer Parameters, Seid Abdollah Jenab
Development Of A Drainage Function For The Transient Case, And A Two-Dimensional Ground-Water Mound Study To Evaluate Aquifer Parameters, Seid Abdollah Jenab
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A drainage function, D (un), is developed to describe the rate of fall and the shape of the water table between drains for an infinite series of parallel drains. The drainage function is evaluated and presented graphically for design purposes. The solution of the drainage function is compared with the solution of Glover's transient state drainage equation. The two equations agreed very well, but the agreement was not as good for very high values of √(4αt)/ L.
The drainage function, D (un ), was solved for the point midway between drains and the solution was presented graphically …
The Design Of A One-Man Terramechanism, Brent Charles Fryer
The Design Of A One-Man Terramechanism, Brent Charles Fryer
Theses and Dissertations
With the rebirth of special warfare in the last few years, the role of the individual soldier and of squad-sized units has been re-emphasized. Most guerilla-type fighting has been, is presently, and will most likely continue occurring in remote areas of the world. The terrain encountered may be tropical grasslands and canopy areas, or rugged mountains, inland waterways, swamps, mud flats and rice paddies. Other adverse terrain conditions are frequently encountered and must be crossed to accomplish the mission of the unit.
Flow Behavior Of Asphalt Cements, W. A. Mossbarger Jr., John A. Deacon
Flow Behavior Of Asphalt Cements, W. A. Mossbarger Jr., John A. Deacon
Kentucky Transportation Center Research Report
The Kentucky Department of Highways in cooperation with the Bureau of Public Roads is conducting a continuing investigation of the fundamental mechanical properties of flexible pavement materials. The ultimate objective of this investigation is to gain sufficient knowledge of the fundamental mechanical behavior of these materials to support the establishment of a responsive flexible pavement design procedure.
A preliminary report, issued in 1964, contained the results of the preparatory phase of this investigation. This report summarized from a theoretical point of view efforts that had been made to quantify the mechanical response of viscoelastic materials to known conditions of loading. …
A Study Of Aluminium-Lead Borate Glass Composite Materials, Aziza Nour El-Din Ragai
A Study Of Aluminium-Lead Borate Glass Composite Materials, Aziza Nour El-Din Ragai
Archived Theses and Dissertations
No abstract provided.
Epr Spectra Of Divalent Manganese In Halide Crystals, Veron Sarkis Sarkissian
Epr Spectra Of Divalent Manganese In Halide Crystals, Veron Sarkis Sarkissian
Archived Theses and Dissertations
No abstract provided.
Molecular Vibrations Of Tetrahedral Systems With Application To Fused Silica, Leila Sado Balloomal
Molecular Vibrations Of Tetrahedral Systems With Application To Fused Silica, Leila Sado Balloomal
Archived Theses and Dissertations
No abstract provided.
Conductivity And Photoconductivity Of As-S-I Glasses, Ahmed Abdel-Hamid El-Difrawi
Conductivity And Photoconductivity Of As-S-I Glasses, Ahmed Abdel-Hamid El-Difrawi
Archived Theses and Dissertations
No abstract provided.
Application Of Multivariate Analysis In Predicting Water Yields In Utah, Leei-Luoh Wang
Application Of Multivariate Analysis In Predicting Water Yields In Utah, Leei-Luoh Wang
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
The basic hydrologic data required to determine the water yield are usually unavailable for small basins and streams while increasing emphasis is being placed on their development. Therefore, some methods and techniques for estimating the amount of water available for development of these small units is needed .
The purpose of this study is to use the concepts and techniques of statistical analysis to develop equations which are useful in estimating the water yield of watersheds for which no stream flow records are available . The approach is an extension of earlier studies at Utah State University (1, lQ) in …
Test 959: Ford 2000 8-Speed (Diesel), Nebraska Tractor Test Lab
Test 959: Ford 2000 8-Speed (Diesel), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Test 958: Ford 2000 4-Speed (Diesel), Nebraska Tractor Test Lab
Test 958: Ford 2000 4-Speed (Diesel), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Carburizing Of Steel Using "Cracked" Methane, Robert Alvin Hesse
Carburizing Of Steel Using "Cracked" Methane, Robert Alvin Hesse
Theses
An attempt was made to carburize steel using cracked methane, industrial terminology for methane burned in air over a catalyst to give carbon monoxide and hydrogen, as the carburizing agent. Initial tests in a laboratory scale furnace using steel in chip form showed that, the feasibility of this method was excellent. These tests also indicated that a good method of control of the carburizing would be by a system that could measure the dew point of the gases introduced into the furnace. The next step was to apply the method of carburizing to small production size lots of bearing components. …
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Land grading in the South West Irrigation Areas with modern earth moving equipment first commenced in 1949.
The advantages of land grading are well recognised by farmers and this season grading operations were carried out on 208 farms.
Pumping And Horsepower, R P. Harington
Pumping And Horsepower, R P. Harington
Journal of the Department of Agriculture, Western Australia, Series 4
WATER is vital to the survival of plants and animals and its availability will influence the site of the homestead and the farm layout generally.
This article describes some of the factors involved in the installation of a pumping outfit for domestic and stock requirements.
Rectangular Cutthroat Flow Measuring Flumes, Gaylord V. V. Skogerboe, M. Leon Hyatt
Rectangular Cutthroat Flow Measuring Flumes, Gaylord V. V. Skogerboe, M. Leon Hyatt
Reports
Introduction: Procedures and methods for more accurate measurement and improved management of water are continually being sought to make better use of our water resources. Of all the devices and structures developed for measuring water, measuring flumes are among the most widely accepted and used. The most common measuring flume is the Parshall flume developed by Ralph Parshall at Colorado State University. Common to most flumes is the basic geometry consisting of a converging inlet section, a throat, and a diverging outlet section. Occasionally, the diverging outlet section is removed under free flow conditions, and the water is allowed to …
Estimating Water Yields In Utah By Principal Component Analysis, Leei-Luoh Wang, A. Leon Huber
Estimating Water Yields In Utah By Principal Component Analysis, Leei-Luoh Wang, A. Leon Huber
Reports
The basic hydrologic data required to determine the water yield are usually unavailable for small basins and streams while increasing emphasis is being placed on their development. Therefore, some methods and techniques for estimating the amount of water available for development of these small units is needed. The purpose of this study is to use the concepts and techniques of statistical analysis to develop equations which are useful in estimating the water yield of watersheds for which no stream flow records are available. The approach is an extension of earlier studies at Utah State University (1, 10) in which physiographic …
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 2 -Parshall Flumes, Gaylord V. Skogerboe, M. Leon Hyatt, Joe D. England, J. Raymond Johnson
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 2 -Parshall Flumes, Gaylord V. Skogerboe, M. Leon Hyatt, Joe D. England, J. Raymond Johnson
Reports
No abstract provided.
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 4 - Weirs, Gaylord V. Skogerboe, M. Leon Hyatt, Lloyd H. Austin
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 4 - Weirs, Gaylord V. Skogerboe, M. Leon Hyatt, Lloyd H. Austin
Reports
No abstract provided.
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 1 - Submerged Flow, Gaylord V. Skogerboe, M. Leon Hyatt, Keith O. Eggleston
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 1 - Submerged Flow, Gaylord V. Skogerboe, M. Leon Hyatt, Keith O. Eggleston
Reports
No abstract provided.
Subcritical Flow Over Highway Embankments, Gaylord V. V. Skogerboe, M. Leon Hyatt
Subcritical Flow Over Highway Embankments, Gaylord V. V. Skogerboe, M. Leon Hyatt
Reports
Introduction: At Utah State University, considerable effort has been devoted to the analysis of submerged flow at open channel constrictions. A method of analyzing subcritical (submerged) flow has been developed for flumes. Because of previous findings, it was felt that this method of analyzing submerged flow could be applied to highway embankments. A highway embankment, when overtopped by flood waters, is a form of broad-crested weir. Being a weir, the flood discharge over the embankment is only a function of the upstream depth for free flow conditions. This paper will present a method for determining the discharge under submerged flow …
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 3 - Cutthroat Flumes, Gaylord V. Skogerboe, M. Leon Hyatt, Ross Kay Anderson, Keith O. Eggleston
Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 3 - Cutthroat Flumes, Gaylord V. Skogerboe, M. Leon Hyatt, Ross Kay Anderson, Keith O. Eggleston
Reports
No abstract provided.
A Procedure For Determining The Feasibility Of Planned Conjunctive Use Of Surface And Ground Water, Barry C. Saunders
A Procedure For Determining The Feasibility Of Planned Conjunctive Use Of Surface And Ground Water, Barry C. Saunders
Reports
Improved management of water resources is one means for alleviating deficiencies in water supply. One promising management technique is integration of ground water and surface water supplies and storage unites, or planned conjunctive use. In order to assess the value of this technique in relations to a particular area or basin, it is necessary to look at the economic, hydrologic, and legal system as a whole. A planning procedure is developed which will enable feasibility to be determined at a minimum cost.
The procedure consists of determining legal constraints, estimating benefits which will accrue to additional water, estimating the quantity …
Analysis Of Submergence In Flow Measuring Flumes, Gaylord V. V. Skogerboe, M. Leon Hyatt
Analysis Of Submergence In Flow Measuring Flumes, Gaylord V. V. Skogerboe, M. Leon Hyatt
Reports
Submerged flow exists in a measuring flume when a change in flow depth downstream from the flume causes a change in flow depth upstream for any particular constant value of discharge. When a change in tailwater depth does not affect the upstream depth, free flow exists. To evaluate the discharge under free-flow conditions, it is necessary to measure only a flow depth upstream from the contracted section (throat) of the flume, whereas two flow depths must be measured to evaluate the discharge under submerged-flow conditions. The two flow depths normally measured when submerged flow exists consist of the same upstream …
Frequency And Magnitudes Of Monthly And Annual Flow Rates (As Determined By (A) A Normal Distribution (B) By Ranking (C) A Gamma Distribution And (D) By A Log Normal Distribution), Roland W. Jeppson
Reports
Background of Program: In developing a water resources atlas for the State of Utah it was necessary to determine the characterisitcs of stream flows within the State. The variations of stream flow for any given month from year to year as well as the variations from month to month throughout the year are important characterisitcs which are determined by analyzing the streamflow records to determine their probability distributions. The program which is descirbed in the following pages was written to determine the monthly as well as annual runoff amounts which might be expected for any number of specified levels of …
Brief Abstracts Of Some Papers On Seeding Agents, Jay D. Schiffman, Joel E. Fletcher
Brief Abstracts Of Some Papers On Seeding Agents, Jay D. Schiffman, Joel E. Fletcher
Reports
During the preparation of a work plan for a study of the atmospheric water resources in Utah, a number of publications were studied which presented information pertaining to agents used to modify weather. These publications have been compiled to eliminate repetition of this laborious task. Brief abstracts of these papers were prepared to help investigators determine whether or not they wish to see the original publications.
Finite Difference Solutions To Free-Surface Flow Through Nonhomogeneous Porous Media, Roland W. Jeppson
Finite Difference Solutions To Free-Surface Flow Through Nonhomogeneous Porous Media, Roland W. Jeppson
Reports
No abstract provided.
Frequency Analyses And Probable Storage Requirements By Frequency Mass Curve Methods, Roland W. Jeppson
Frequency Analyses And Probable Storage Requirements By Frequency Mass Curve Methods, Roland W. Jeppson
Reports
Background of Program: In devloping a water resources atlas for the State of Utah, numerous stream flow records were analyzed to determine their flow characteristics. The objective was to present the results in a format which is well adapted for use by water resources planners in preliminary designs to obtain optimum benefits from the water resources. The program described in this booklet was written to determine the probable amounds of storage required in order to meet specified levels of sustained demand for water. The method used not only gives information concerning amounts of storage but also information concerning the probably …
Reliability Of Can-Type Precipitation Gage Measurements, C Earl Israelsen
Reliability Of Can-Type Precipitation Gage Measurements, C Earl Israelsen
Reports
A comprehensive review of literature was made of studies conducted since 1952 pertaining to the accuracy of can-type precipitation gage measurements. Brief discussions are given of the results of some of them, and conclusions are drawn. Topics discussed include raingage comparisons, accuracy of precipitation measurements, precipitation gage errors, and precipitation measurements in mountains. A bibliography is included
Mathematical Simulation Of Small Watershed Hydrologic Phenomena, V. V. Dhruva Narayana, Jay M. Bagley
Mathematical Simulation Of Small Watershed Hydrologic Phenomena, V. V. Dhruva Narayana, Jay M. Bagley
Reports
In many hydrologic investigations concerning small watersheds, data and observations are totally inadequate to provide a basis for outflow hydrographs. Consequently, a variety of empirical approaches have been developed which have limited rational validity. Hydrograph synthesis offers a reasonable approach to predicting the outflow hydrograph characteristics. In order to synthesize a hydrograph, it is necessary to mathematically describe the physical behavior of the dynamic processes involved in the hydrologic phenomena. Hydrograph synthesis may be considered to comprise (a) hydrographs (actual or simulated) of precipitation, (b) hydrographs of abstractions such as interception, infiltration, and depressional storage, (c) routing or translating the …