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Articles 185851 - 185880 of 193555

Full-Text Articles in Engineering

The Dynamic Characteristics Of A Beam Whose Material Is Represented By A Three-Parameter Viscoelastic Solid, Vishnurao K. Devkar May 1972

The Dynamic Characteristics Of A Beam Whose Material Is Represented By A Three-Parameter Viscoelastic Solid, Vishnurao K. Devkar

Theses and Dissertations

Man observes many phenomena occurring in nature which he can use to his benefit. He observes how physical quantities vary as a function of their environment in order to predict how these variations will affect a system he wishes to design. For this purpose, he must establish a model that is representative of the relation between those physical quantities and certain environments to which they are subjected.


Application Of The Maximum Deformation Theory Of Failure To The Torsional Failure Due To Fracture Of 4140 Steel, C. V. Krishna Kumar May 1972

Application Of The Maximum Deformation Theory Of Failure To The Torsional Failure Due To Fracture Of 4140 Steel, C. V. Krishna Kumar

Theses and Dissertations

Forming is the fastest way of changing the shape of a piece of metal. It is the most economical process to use for high-volume mass production when the shape of a part is such that it can be made by one of the forming operations


The Longest Flight, Tim Brady May 1972

The Longest Flight, Tim Brady

Publications

Recounts the last leg of a ferry mission in a C-7 from Southeast Asia to Okinawa where the aircraft experienced serious malfunctions. Rescue accomplished just short of destination with very minor injuries to flight crew after ditching.


The Use Of Soil-Cement As A Highway Material, Vongchai Jarernswan May 1972

The Use Of Soil-Cement As A Highway Material, Vongchai Jarernswan

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

Soil-Cement is not a new material; its low cost but high quality make it well-known and the use of this material for highway, dam, and airfield purposes increases every year. The origin of the idea of mixing soil and cement to produce a structural material has not been definitely established; informal records show that mixing soil and cement was tried in Iowa, Ohio, Texas and probably in other places by 1920 (1). Since the first controlled soil-cement construction was carried out near Johnsonville, South Carolina in 1935 (2), soil-cement has been considered a valuable engineering material. It is now an …


Hybrid Computer Modeling Of The Hydro-Salinity Flow System Within A River Basin, Duane R. Jensen May 1972

Hybrid Computer Modeling Of The Hydro-Salinity Flow System Within A River Basin, Duane R. Jensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As demands upon available water supplies increase, there is an accompanying increase in the need to assess the downstream consequences resulting from changes in the upstream hydrologic system and salinity flow system.

Since the burden of water quantity and quality maintenance must be shared by the users, predictions are needed for quantity and quality changes which might result from contemplated development at any specified location within the river system. A close relationship between the hydrologic and salinity flow systems exist, thus making it necessary for an understanding of both systems in order to properly manage the salinity system.

This study …


Simulation Of The Dynamics Of Erodible Streams, Kousoum S. Sakhan May 1972

Simulation Of The Dynamics Of Erodible Streams, Kousoum S. Sakhan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The movement of translatory waves over an erodible stream has a critical influence on the time of rise of the hydrograph which, in turn, affects the stability of the stream channel. In the present study, the movement of these flood waves is described by the one-dimensional equations of continuity and motion which are obtained by the space integration of the three-dimensional equation of continuity and Reynolds equations. The flow of suspended sediment is described by a one-dimensional dispersion equation which is derived from a three-dimensional equation of conservation of solid mass in the flow. With some modifications the one-dimensional dispersion …


Effects Of Land Use On Water Quality: Summit Creek, Smithfield, Utah, David W. Meyers May 1972

Effects Of Land Use On Water Quality: Summit Creek, Smithfield, Utah, David W. Meyers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of various land uses on water quality in Summit Creek were evaluated during the period beginning March 13, 1971 and ending October 27, 1971. Potential sources of pollution investigated were: (1) septic tank use, (2) feedlot runoff, (3) urban runoff, (4) rural runoff.

Samples were collected from five sampling stations on 16 separate days during the sampling period. Analyses were performed to determine the following constituents: ammonia, nitrite, nitrate, total phosphorus, orthophosphate, coliform bacteria, chloride, suspended solids, volatile suspended solids, total carbon, organic carbon, temperature and pH.

Agricultural activities, including livestock feedlot operations, were identified as the major …


A Study Of The Effects Of Water Institutions On Planning And Management Of Water Resources In Utah, Donald H. Mclean May 1972

A Study Of The Effects Of Water Institutions On Planning And Management Of Water Resources In Utah, Donald H. Mclean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One area of research that has been somewhat neglected in water planning programs and water development is that pertaining to water law and water institutions. Over the years each state has developed a complex system of water law and organizations for the allocation and distribution of water. The usual role of these institutions is one of orderly development and the efficient use of the water resource. However, in many cases water law and institutions have imposed serious constraints upon the planning and the most efficient use of a valuable resource.

This study, through historic research, has attempted to define these …


An Analytical Study Of The 1971-72 Cooperative Vocational Program In Utah With Comparison To A Guideline For Cooperative Vocational Programs, George C. Ku May 1972

An Analytical Study Of The 1971-72 Cooperative Vocational Program In Utah With Comparison To A Guideline For Cooperative Vocational Programs, George C. Ku

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was (1) to develop a guideline for cooperative education; (2) to determine the current status of cooperative vocational education in Utah; and (3) to compare current practices with the established guideline.

This study was completed in two parts. The first part involved the construction and verification of a guideline for cooperative education in Utah; the second, a survey of the current status of cooperative education. A descriptive survey technique was employed to gather data required for determination of the guideline's validity and relevance, and the current status of cooperative education in Utah.

All 13 key …


Photo Chemical Milling, Terry R. Smith May 1972

Photo Chemical Milling, Terry R. Smith

Graduate Research Papers

This study is concerned with the techniques used in the production of metal parts by the use of photofabrication. Included will be a research of the historical background of the industry, and the production processes used by the photofabrication industry that apply to this project. Information will include careers, education, current status of the industry, as well as methods for implementing the processes into the industrial arts curriculum.


A Study Of The Effect Of A Dielectric Field On The Solvolysis Rate Of Tert-Butyl Bromide In A Recycle Reactor, Rolf L. Ball Apr 1972

A Study Of The Effect Of A Dielectric Field On The Solvolysis Rate Of Tert-Butyl Bromide In A Recycle Reactor, Rolf L. Ball

Theses

Previous experiments at Newark College of Engineering have shown that a dielectric field can effect the rate of a chemical reaction. A theory was developed in this thesis to postulate how a dielectric field can increase the rate of a first order reaction whose rate determining step is an ionization. An experimental procedure was developed to measure the reaction rate constant of a tertiary alkyl halide with a solvent to test this theory. The solvolysis of tortbutyl bromide in aqueous ethanol (80%), aqueous dioxane (75%) and aqueous acetone (75%) solvent systems were the reactions selected for study. A total of …


The Development Of Langmuir's Adsorption Isotherms For Glucose And Fructose And The Separation Via Continuous Parametric Pumping, Jafir Abbas Jaferi Apr 1972

The Development Of Langmuir's Adsorption Isotherms For Glucose And Fructose And The Separation Via Continuous Parametric Pumping, Jafir Abbas Jaferi

Theses

The adsorption equilibria and adsorption rates of fructose and of glucose on aqueous suspensions of fullers earth were determined at various temperatures. The Langmuir adsorption equations were fitted to the equilibrium data and the Langmuir constants were determined so that isotherms could be developed for any pair of parametric pumping operating temperatures.

This glucose+fructose+water system was then subjected to continuous thermal parametric pumping for the separation of glucose and fructose. The operating conditions required for the separation were determined from the experimental adsorption rates and equilibrium isotherms. Samples taken from the continuous top and bottom streams were analyzed by polarimetry …


Dynamic Response Of Predictions Of Reinforced Concrete Beams, Lawrence D. Reaveley Apr 1972

Dynamic Response Of Predictions Of Reinforced Concrete Beams, Lawrence D. Reaveley

Civil Engineering ETDs

Prediction of the dynamic response of reinforced concrete beams by various analytical model techniques was considered. Four models were studied: (1) an elastic or elasto-plastic SDF model, (2) an SDF model based on experimental force-displacement data, (3) an SDF model based on a theoretical moment-flexural rigidity relationship, and (4) an MDF model based on a theoretical moment-flexural rigidity relationship.

Beam response, as predicted with the various models, was compared to experimental response data obtained from simply supported, singly reinforced, concrete beams. Static and dynamic response was considered. Dynamic model modifications for the stiffness, yield strength and damping were studied. Nominal …


Lowering The Transportation And On Site Labour Costs - Some Proposals, Iraj E. Majzub Apr 1972

Lowering The Transportation And On Site Labour Costs - Some Proposals, Iraj E. Majzub

International Symposia on Low Cost Housing Problems

No abstract provided.


Suspended Modular Component System, Lawrence C. Abell, Conrad P. Heins Jr. Apr 1972

Suspended Modular Component System, Lawrence C. Abell, Conrad P. Heins Jr.

International Symposia on Low Cost Housing Problems

No abstract provided.


The Sears Eco-System Home, Jack R. Warner, G. Day Ding Apr 1972

The Sears Eco-System Home, Jack R. Warner, G. Day Ding

International Symposia on Low Cost Housing Problems

No abstract provided.


Housing Design Process And Ekistics -- A Systems Approach, Jawalker K. Sridhar Rho Apr 1972

Housing Design Process And Ekistics -- A Systems Approach, Jawalker K. Sridhar Rho

International Symposia on Low Cost Housing Problems

No abstract provided.


Use Of Pressurized Membranes As A Low-Cost Erection Scheme For Concrete Structures, John W. Leonard Apr 1972

Use Of Pressurized Membranes As A Low-Cost Erection Scheme For Concrete Structures, John W. Leonard

International Symposia on Low Cost Housing Problems

No abstract provided.


The Technology And Management Of Mobile Home Production, Arthur D. Bernhardt Apr 1972

The Technology And Management Of Mobile Home Production, Arthur D. Bernhardt

International Symposia on Low Cost Housing Problems

No abstract provided.


Engineering Improvements In Reclaimed Marshland For Housing Project, Carl W. Garbe, Kuei-Wu Tsai Apr 1972

Engineering Improvements In Reclaimed Marshland For Housing Project, Carl W. Garbe, Kuei-Wu Tsai

International Symposia on Low Cost Housing Problems

No abstract provided.


Low Cost Housing Is Not Low Standard Housing, N. K. Gandhi Apr 1972

Low Cost Housing Is Not Low Standard Housing, N. K. Gandhi

International Symposia on Low Cost Housing Problems

No abstract provided.


The Systems Approach To Lower-Cost Housing, Kenneth G. Jessop Apr 1972

The Systems Approach To Lower-Cost Housing, Kenneth G. Jessop

International Symposia on Low Cost Housing Problems

No abstract provided.


The Procurement Process And System Building For Housing, Guy G. Rothenstein Apr 1972

The Procurement Process And System Building For Housing, Guy G. Rothenstein

International Symposia on Low Cost Housing Problems

No abstract provided.


Construction Of Low Cost Housing On Very Steep Slopes, Leandro Uintana, Felipe Farias, Fernando H. Tinoco Apr 1972

Construction Of Low Cost Housing On Very Steep Slopes, Leandro Uintana, Felipe Farias, Fernando H. Tinoco

International Symposia on Low Cost Housing Problems

No abstract provided.


Goal 26: A Game For Housing Education, G. Day Ding, Jack R. Warner Apr 1972

Goal 26: A Game For Housing Education, G. Day Ding, Jack R. Warner

International Symposia on Low Cost Housing Problems

No abstract provided.


A Super-Roof Concept For New Towns In Extreme Climates, John V. Huddleston Apr 1972

A Super-Roof Concept For New Towns In Extreme Climates, John V. Huddleston

International Symposia on Low Cost Housing Problems

No abstract provided.


Lower-Cost Housing Research -- Interdisciplinary Graduate Study Programs, Gunter Schmitz Apr 1972

Lower-Cost Housing Research -- Interdisciplinary Graduate Study Programs, Gunter Schmitz

International Symposia on Low Cost Housing Problems

No abstract provided.


System Approach To Analysis Of Housing Construction Costs, Schlomo Peer Apr 1972

System Approach To Analysis Of Housing Construction Costs, Schlomo Peer

International Symposia on Low Cost Housing Problems

No abstract provided.


The Process Of Urban Renewal In England & Wales -- A Case Study: Portsmouth (Buckland), Michael Fagence Apr 1972

The Process Of Urban Renewal In England & Wales -- A Case Study: Portsmouth (Buckland), Michael Fagence

International Symposia on Low Cost Housing Problems

No abstract provided.


Urban Housing Policy In Iran, M. T. Jahanshahi Apr 1972

Urban Housing Policy In Iran, M. T. Jahanshahi

International Symposia on Low Cost Housing Problems

No abstract provided.