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Articles 192181 - 192210 of 196048

Full-Text Articles in Engineering

Engineer Intelligence Guide 33, Preparation Of Terrain Diagrams, June 1960, Robert Bolin , Depositor Jun 1960

Engineer Intelligence Guide 33, Preparation Of Terrain Diagrams, June 1960, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

In 1960, geographic intelligence in the US Armed Forces was decentralized. The Intelligence and Mapping Division of the US Army Corps of Engineers was primarily responsible for creation of military intelligence concerning the surface of the earth excluding the oceans and seas for the armed forces of the United States. Engineer intelligence guides were issued to provide guidance concerning collection, processing, production, and dissemination of geographic intelligence to elements of the Corps of Engineers.

This engineer intelligence guide explains the differences between maps and terrain diagrams and provides examples using actual maps and terrain diagrams. The maps and terrain diagrams …


Irrigation And Drainage Problems In Uruguay, Jerald Emmet Christiansen Jun 1960

Irrigation And Drainage Problems In Uruguay, Jerald Emmet Christiansen

Reports

Synopsis: Uruguay irrigates about 65,000 acres, mostly rice (74%) and sugar cane (15%). Summer rainfall averages about 3.5 in. per month, but frequent droughts seriously affect both crops and livestock. Irrigation can be increased by storage in small reservoirs on tributary streams by means of low earth dams. Some areas will require flood control and draiange before intensive agriculture can be practiced.


Criteria For Design Of Pavement Thicknesses, Kentucky Interstate Highways, William B. Drake, James H. Havens Jun 1960

Criteria For Design Of Pavement Thicknesses, Kentucky Interstate Highways, William B. Drake, James H. Havens

Kentucky Transportation Center Research Report

The Kentucky Department of Highways, in 1946, sought a more systematic criteria and basis for designing the thickness of bituminous concrete pavements. The Research Division was authorized to pursue this work and to develop the criterion. These efforts were embodied in a report (1) to the Department, which offered a system of design based upon CBR's and EWL's. EWL's were computed originally for a 10-yr. period but this practice was revised in 1954, to encompass 20-yr. traffic (more realistic with respect to average road life). Then, in 1957, the Department requested a re-evaluation of the criteria from the standpoint of …


Experimental Paving Projects Using Curtiss-Wright’S Coal-Modified, Coal-Tar Binder [1960], James F. Hardyman Jun 1960

Experimental Paving Projects Using Curtiss-Wright’S Coal-Modified, Coal-Tar Binder [1960], James F. Hardyman

Kentucky Transportation Center Research Report

On April 7, 1959, the Curtiss-Wright Corporation announced the development of a new coal-based road paving binder, utilizing bituminous coal. This development was the result of their research program conducted in an effort to find new uses for coal and coal products. The basic principle used in preparing this bituminous binder was the digestion of powdered coal in coal tar and tar oils at temperatures of 500-600°F. By adjusting the proportions of tar, tar oils, and coal, binders could be prepared having penetration ranges comparable to asphalt cements. It was the intent of the developers that the modified binders be …


A Study Of The Flow Characteristics In The Core Region Of The Sandia Engineering Reactor, James A. Moeller Jun 1960

A Study Of The Flow Characteristics In The Core Region Of The Sandia Engineering Reactor, James A. Moeller

Chemical and Biological Engineering ETDs

The core region of a nuclear rector is an extremely compact area with a capability of providing a very high heat output. Regardless of the type of coolant used, the heat transfer characteristics of this region must be adequately designed to prevent any undesirable "hot-spots" from developing. The Sandia Engineering Reactor has one of the most compact cores of any in currently operating nuclear reactors. For this reason it is necessary to investigate fully the heat transfer characteristics of the core. The rate of heat transfer from the fuel elements to the coolant is directly dependent upon the temperature difference …


Demodulation Of A Special Am-Fm Signal, Donald W. Dearholt Jun 1960

Demodulation Of A Special Am-Fm Signal, Donald W. Dearholt

Electrical and Computer Engineering ETDs

As telemetry becomes more and more important in returning information, new types of modulation arise. Sometimes the modulation used is a direct result of a particular type of transducer, although the output of the transducer may be modified before the carrier is modulated to cause a very different type of signal than would otherwise have occurred.


Absolute Viscosity Of The N-Paraffin Liquids, Gerald Permutt May 1960

Absolute Viscosity Of The N-Paraffin Liquids, Gerald Permutt

Theses

The absolute viscosity of the normal paraffins C5H12 to C20H42 was studied to determine a relationship more useful in predicting liquid viscosities than existing correlations such as the methods of Andrade, Souders, Thomas, and Doolittle.

It was found that a function of corresponding liquid states could be designed which related viscosity to the number of carbon atoms. This function, here called liquidity, is defined as the extent to which a substance exists as a liquid with respect to temperature. This function can be expressed mathematically as:

Lc = (t - tm)/(t …


Behavior Change Through Training, Robert Walter Messerschmidt May 1960

Behavior Change Through Training, Robert Walter Messerschmidt

Theses

This thesis represents an investigation of attitude and behavior change as a result of human relations training, The elements of heredity and environment are proffered as a basis for attitude and behavior formation. It is denoted that these elements are also instrumental in subsequent development of adult behavior.

As noted in the literature, the term "individual differences" embodies the effect of virtually unique heredity and environmental conditions to which each person is exposed. These differences are also partly determined by the growth in developmental trends, which varies from individual to individual and from time to time.

The existence of individual …


Correlation Of Maximum Air Velocity With Angle Of Installation For Wire Mesh Mist Eliminators, John Lawrence Reid May 1960

Correlation Of Maximum Air Velocity With Angle Of Installation For Wire Mesh Mist Eliminators, John Lawrence Reid

Theses

Wire mesh entrainment separators were installed in a vertical cylindrical column at varying angles from the horizontal. With a fixed liquid loading, air flow rates were varied in order to determine the maximum capacity of the mist eliminator for any given angle of installation. Mist eliminators studied were 4" thick and constructed of 0. 011" diameter Type 304 stainless steel wire with a density of 12 lbs. per cubic foot and 5 lbs. per cubic foot.

For normal installations of mist eliminators in the horizontal plane, the following equation is used to determine maximum allowable design capacity:

V = K …


Single Particle Crushing Of Glass, John Boyd Painter May 1960

Single Particle Crushing Of Glass, John Boyd Painter

Theses

An investigation was made to determine the relationship between new surface formed and energy input in the slow compression crushing of single glass particles at levels of high energy input.

Particle geometry, as represented by various sized hollow and solid cylinders, showed no effect on the energy-area relationship obtained.

Using an average particle size relationship as a measure of surface area, a definite relationship was found to exist between the new surface formed and the energy input for the slow compression crushing of glass.

Surface area measurements were attempted by employing gas adsorption techniques using a continuous flow method. This …


An Evaluation Of The Beggs Deformeter In Two-Dimensional Structural Analysis And An Investigation Of The Deformeter In Three-Dimensional Structural Analysis, Dwight F. Denton May 1960

An Evaluation Of The Beggs Deformeter In Two-Dimensional Structural Analysis And An Investigation Of The Deformeter In Three-Dimensional Structural Analysis, Dwight F. Denton

Civil Engineering ETDs

It was the purpose of this thesis to evaluate the Beggs deformeter in two-dimensional structural frames and then investigate the possible use in three-dimensional structural frames. It is intended in dealing with the subject to explain and describe the deformeter apparatus and verify the theoretical principle through actual structural model analysis.


A Study Of Minimum Element Syntheis Of A Two-Pole Rc Driving Point Impedance, William F. Carlson May 1960

A Study Of Minimum Element Syntheis Of A Two-Pole Rc Driving Point Impedance, William F. Carlson

Electrical and Computer Engineering ETDs

The point of view taken in this thesis is from the point of view of economy. A network containing resistors of values 1 ohm and 1 megohm may present problems of accuracy and element tolerance limits which are not aided by the fact that all elements may be increased or decreased by a constant multiplier without changing the shape of the network gain curve.


An Investigation Of The Effects Of Pozzolans On New Mexico Concrete Aggregates, Harry W. Montgomery May 1960

An Investigation Of The Effects Of Pozzolans On New Mexico Concrete Aggregates, Harry W. Montgomery

Civil Engineering ETDs

It was the purpose of this investigation to determine some of the effects a pozzolan has on Portland cement concrete when New Mexico aggregates are used. The specific items investigated were (1) to determine the effects of a pozzolan on the alkali aggregate expansion in concrete; (2) to show the effect on the compressive strength of concrete and the tensile strength of mortar briquettes when part of the Portland cement is replaced with a pozzolan; (3) to determine whether or not the “Mason Jar Expansion Test” would give reliable results; and (4) to determine whether or not an aggregate, with …


Copper Converter: Basic Research Testing With A Plastic Model Converter And Four Types Of Refractories, Arthur C. Bigley Jr. May 1960

Copper Converter: Basic Research Testing With A Plastic Model Converter And Four Types Of Refractories, Arthur C. Bigley Jr.

Bachelors Theses and Reports, 1928 - 1970

In recent years there has appeared an increasing number of papers on converting operations as related to thermodynamics. This approach is a powerful, potential tool. However, the development of new ideas and changes must rely on accurate basic information.


Microradiography Of Metals And Alloys Using A Medical X-Ray Unit, W. R. Byrne May 1960

Microradiography Of Metals And Alloys Using A Medical X-Ray Unit, W. R. Byrne

Bachelors Theses and Reports, 1928 - 1970

There is no doubt that the microradiograph technique is of value to the metallurgist. A three-dimensional picture to supplement the photomicrographs should give a true picture of the microstructure. Microradiography can be used where etchants can not differentiate between the various components or where no etchant can be found suitable for a particular alloy.


Comminution Studies, George A. Grandy May 1960

Comminution Studies, George A. Grandy

Bachelors Theses and Reports, 1928 - 1970

Comminution, reduction in size, is one of the most important, yet least understood, steps in mineral dressing. So that more efficient comminuting devices may be designed and constructed, a better knowledge of the relationship between energy consumption and size reduction is desired. Occasional studies during the last 100 years have produced a few "laws" purporting to describe this relationship. In each case, the promulgators and supporters of these laws have presented experimental evidence for their verification. Obviously, all of these advocated practices cannot be correct. To the mill designer, the problem is "Which, if any, of these laws are valid." …


Secondary Recrystallization In Copper, James E. Thompson May 1960

Secondary Recrystallization In Copper, James E. Thompson

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to study the conditions under which secondary recrystallization will take place in copper. The variables considered were the time annealing, the temperature of annealing, and the degree of cold work undergone by the specimen before it was subjected to the heat treatment.


A Microwave Technique For Determining The Electronic Properties Of A Moving Plasma, Bernard Hayes May 1960

A Microwave Technique For Determining The Electronic Properties Of A Moving Plasma, Bernard Hayes

Electrical and Computer Engineering ETDs

A microwave interferometer technique which may be used as a diagnostic tool for determining the electronic properties of a moving plasma is described and analyzed. The plasma and microwaves are confined in a wave guide and longitudinal observation is employed. The complex reflection coefficient determined from resultant standing-wave pattern provides the means for obtaining the complex dielectric constant, conductivity, electron concentration and collision frequency of electrons with molecules in the plasma. The plasma used for these experiments is the reaction products of a gas detonation.


Test 745: Massey-Ferguson Mf 65 (Diesel), Nebraska Tractor Test Lab May 1960

Test 745: Massey-Ferguson Mf 65 (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 …


Functional And Economic Considerations Of An Electrical Line Feeding Large Concentration Loads, Seth O. Lewis May 1960

Functional And Economic Considerations Of An Electrical Line Feeding Large Concentration Loads, Seth O. Lewis

Electrical and Computer Engineering ETDs

This paper discusses the considerations required for selecting particular characteristics of [transmission lines] and presents an original method of obtaining the most economical solution. A typical problem at the Public Service Company of New Mexico is solved to illustrate the usefulness of this method.


Growth Of A Preferentially Oriented Aluminum Single Crystal, John George Bjeletich May 1960

Growth Of A Preferentially Oriented Aluminum Single Crystal, John George Bjeletich

Bachelors Theses and Reports, 1928 - 1970

When studying some anisotropic property of a specific metal, such as the critical shear stress of aluminum, it is desirable that the test specimen be a single crystal with the crystal axes preferentially oriented. Therefore, it is necessary to obtain a single crystal by one of the methods mentioned and by use of x-rays to determine the orientation. Once the single crystal is obtained and the orientation known, it is possible to grow a preferentially oriented aluminum single crystal by a method generally known as "seeding". The purpose of this thesis problem was to grow a crystal by utilizing the …


The Identification Of Montana Clays By X-Ray Analysis, James Francis Donovan May 1960

The Identification Of Montana Clays By X-Ray Analysis, James Francis Donovan

Bachelors Theses and Reports, 1928 - 1970

This investigation is concerned primarily with the determination of the various clay minerals comprising certain deposits through the state. This investigation was accomplished with the use of X-Ray diffraction equipment and it can be easily understood why this equipment has been of such benefit to the clay mineralogist.


The Macromosaic Structure Of Lead Single Crystals, Eldon J. Nicholson May 1960

The Macromosaic Structure Of Lead Single Crystals, Eldon J. Nicholson

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation is to examine this structure [macromosaic] to determine any properties or characteristics peculiar to it that could shed light on its cause or on the basic mechanism of crystal growth from the melt.


Design And Use Of A High Power Laser For Plasma Generation Studies., Philip N. Mace May 1960

Design And Use Of A High Power Laser For Plasma Generation Studies., Philip N. Mace

Electrical and Computer Engineering ETDs

The advent of high power lasers to the technological scene has introduced the possibility of creating new effects utilizing the interaction of this high intensity light with matter. C. M. Fowler and D. B. Thomson of the Los Alamos Scientific Laboratory suggested in 1963 the possibility of using a high power laser to pre-ionize and heat a target material to be contained in an explosively driven theta pinch machine. There had been calculations performed by John Dawson, Princeton University, and A. Engel­hardt, Westinghouse Research Laboratories, which indicated that such an approach was theoretically feasible. The laser powers required, however, were …


Test 743: Case 731 (Diesel), Nebraska Tractor Test Lab Apr 1960

Test 743: Case 731 (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 742: Case 731c (Diesel), Nebraska Tractor Test Lab Apr 1960

Test 742: Case 731c (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 741: Case 930 (Diesel), Nebraska Tractor Test Lab Apr 1960

Test 741: Case 930 (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 …


Csr 381-1, Military Intelligence, Technical Intelligence Relationships, 12 May 1960., Us Army Chief Of Staff, Robert Bolin , Depositor Apr 1960

Csr 381-1, Military Intelligence, Technical Intelligence Relationships, 12 May 1960., Us Army Chief Of Staff, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This document was issued by the Chief of Staff to prescribe relationships between different officers in the Army staff. Particularly, it was intended to “prescribe relationships between the Assistant Chief of Staff for Intelligence (ACSI), the Deputy Chief of Staff for Logistics (DCSLOG), and the technical Services in the field of intelligence activities.” This is essentially the same as the 1958 version.

It was published as part of an attempt to solve an ongoing organizational problem: how to coordinate the intelligence activities of the US government.

In the 1950s, military intelligence was decentralized. There was no national-level military intelligence agency. …


Determination Of Required Component Reliability From System Reliability Requirements, Arthur M. Breipohl Apr 1960

Determination Of Required Component Reliability From System Reliability Requirements, Arthur M. Breipohl

Electrical and Computer Engineering ETDs

No abstract provided.


Test 740: Case 841 (Lpg), Nebraska Tractor Test Lab Apr 1960

Test 740: Case 841 (Lpg), 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 …