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Articles 57331 - 57360 of 57604
Full-Text Articles in Entire DC Network
A Thermodynamic Study Of The Molybdenum-Sulfur System At 1100⁰C, Seth C. Schaefer
A Thermodynamic Study Of The Molybdenum-Sulfur System At 1100⁰C, Seth C. Schaefer
Masters Theses
"A static method was used to determine equilibrium sulfur pressure for molybdenum-sulfur mixtures at 1100°C.
The results obtained were:
(1) The molybdenum disulfide phase was stable in a sulfur pressure range of 1.023 x 10-5 to 6.026 x 10-1 atmospheres. A range of non-stoichiometry from MoS2.00 to MoS2.22 was determined under these conditions.
(2) The upper limit of sulfur content of molybdenum sesquisulfide (Mo2S3) is nearly stoichiometric.
(3) The extent of solid solution of sulfur in molybdenum is approximately 1.5 atomic % (0.5 wt %).
(4) Molybdenum sesqu-isulfide (Mo2S3 …
Small Signal Gain Analysis For A Seven Cavity Klystron Amplifier., William E. Hord
Small Signal Gain Analysis For A Seven Cavity Klystron Amplifier., William E. Hord
Masters Theses
"The problem was to find a suitable method of using the digital computer to calculate the small signal gain characteristics of a seven cavity klystron amplifier. Background material relevant to the problem was reviewed. The differential equations for small signal conditions in a gridless gap klystron were developed. These equations were then solved and put in a matrix form suitable for digital computer analysis. Suggestions for additional development were proposed"--Abstract p. ii
Infrared Modulation Using The Field-Effect Properties Of Germanium., Lloyd E. Brunkhorst
Infrared Modulation Using The Field-Effect Properties Of Germanium., Lloyd E. Brunkhorst
Masters Theses
"The absorption of infrared radiation, by free carriers in germanium, has been used to amplitude modulate infrared radiation. In the experiment, a space charge layer consisting of free carriers is established at the inner surface of a germanium sample by using the field-effect technique. Infrared radiation of a wavelength to which the germanium is transparent is then Internally reflected from this surface. The infrared radiation passes twice through the space charge layer for each internal reflection. With each pass through the space charge layer, the amplitude of the transmitted infrared is decreased. Amplitude modulation of the transmitted infrared is accomplished …
Evaluation Of Asphalt-Aggregate Distribution In Bituminous Mixes By Autoradiography : Technical Paper, Donald R. Lamb, William Harner Goetz, John E. Christian
Evaluation Of Asphalt-Aggregate Distribution In Bituminous Mixes By Autoradiography : Technical Paper, Donald R. Lamb, William Harner Goetz, John E. Christian
JTRP Technical Reports
No abstract provided.
Tobermorite And Tobermorite-Like Calcium Silicate Hydrates: Their Properties And Relationships To Clay Minerals, Sidney Diamond
Tobermorite And Tobermorite-Like Calcium Silicate Hydrates: Their Properties And Relationships To Clay Minerals, Sidney Diamond
JTRP Technical Reports
No abstract provided.
An Application Of Gravity Model Theory Using A Small Sample Of Origin-Destination Data : Informational Report, Bob L. Smith
An Application Of Gravity Model Theory Using A Small Sample Of Origin-Destination Data : Informational Report, Bob L. Smith
JTRP Technical Reports
No abstract provided.
An Approach To Correlate Pulsed Radar And Photographic Data, Nasir Ahmed
An Approach To Correlate Pulsed Radar And Photographic Data, Nasir Ahmed
Electrical and Computer Engineering ETDs
The Jet Propulsion Laboratory Lunar Program, which is supported by the National Aeronautics and Space Administration has two major projects underway. These are Ranger and Surveyor. The Ranger Project is in the flight stage whereas Surveyor is still in hardware development. The equipment of Ranger 3, 4, and 5 spacecrafts includes a radar altimeter to obtain radar reflection data, and a vidicon camera to obtain close-up pictures of the moon's surface. The data obtained in these flights will thus be available for analysis and comparison using the techniques outlined in this thesis.
Missouri School Of Mines Antenna Range Design., Russell Melvin Ousley
Missouri School Of Mines Antenna Range Design., Russell Melvin Ousley
Masters Theses
"The problem was to design, construct and evaluate an antenna range which could be used in future research and instructional programs. The basic theory of range design and practical considerations were studied and a range was then designed and built from equipment which was either immediately applicable, applicable after modification or constructed to fit the needs of the range. Tests were made to determine the performance characteristics of the system with respect to the more important design parameters. Suggestions were given for future improvement of operation and expansion of the range capabilities"--Abstract p. ii
The Justification For And Design Of A Lunar Radio Observatory., Thomas Van Doren
The Justification For And Design Of A Lunar Radio Observatory., Thomas Van Doren
Masters Theses
"The purpose of a radio telescope is to record information concerning the strength, spectrum, polarization, and direction of arrival of extraterrestrial electromagnetic radiation at radio frequencies. Earthly based radio observatories are hampered in their attempt to achieve this purpose by atmospheric absorption and reflection of the radiation. A lunar based system would not have this problem because the Moon possesses practically no atmosphere. However, other environmental conditions, such as micrometeorites, high frequency radiation, and extreme temperature variations, must be overcome. This thesis justifies the need for a lunar radio observatory and also describes a particular radio telescope system which should …
A Study Of Chemical Stabilization Of The Swell Properties Of Putman Soil, Dale E. Dobson
A Study Of Chemical Stabilization Of The Swell Properties Of Putman Soil, Dale E. Dobson
Masters Theses
"The theory of chemical stabilization of a swelling clay was reviewed. The effect of several chemicals on the engineering properties of Putnam soil was investigated using the Atterberg tests. Strength of concentration of chemical additives versus preferred structural orientation of treated Putnam was investigated using sedimentation procedures similar to those used in the hydrometer analysis of fine grained soil sizes. Swell tests were conducted under a static load of 1.25 psi on untreated Putnam, Putnam in combination with sodium carbonate, and Putnam treated with calcium hydroxide. These tests were conducted at varying initial moisture contents and dry densities.
It was …
A Parametric Study Of The Heat Transfer Characteristics Of A Moving Band Heat Exchanger, Larry Hyde Brim
A Parametric Study Of The Heat Transfer Characteristics Of A Moving Band Heat Exchanger, Larry Hyde Brim
Theses and Dissertations
In recent years much attention has been devoted to the development of efficient heat exchangers. The regenerative or moving matrix heat exchanger is one type which has been considered. Most regenerative heat exchangers use one of the conventional types of high area matrices mounted in a drum or disk in such a manner that it can be moved in a continuous cycle from a cold fluid stream to a hot fluid stream and back again. A rather different approach to the design of a regenerative heat exchanger which has been patented in this country is a set of flexible moving …
An Information Brochure On Annexation For The Metropolitan Area Of Jacksonville, Florida, Junius Elmore Dovell, Arthur W. Smith
An Information Brochure On Annexation For The Metropolitan Area Of Jacksonville, Florida, Junius Elmore Dovell, Arthur W. Smith
Arthur N. Sollee, Sr. Textual Materials
Informational brochure containing a letter Dovell and Smith, Consultants, to Mayor Haydon Burns and Council President Brad Tredinnick, Members of the City Council and the City Commission, City of Jacksonville, dated August 24, 1962 to present the fact concerning annexation.
An Electronics Course Of Study For The High Schools In The Highline School District, Rual Elmer Tigner
An Electronics Course Of Study For The High Schools In The Highline School District, Rual Elmer Tigner
Graduate Student Research Papers
Electronics is now being taught in the Highline District in one course for one year in each of the four high schools. There are no formal district objectives tor this course, no sequence of instruction, no list of course content. The writer has felt the need for the above and has interviewed all four instructors in the district and the assistant superintendent of instruction. It was agreed that in order to provide a more meaningful, correlated program, it would be necessary to have such a district-wide course of study developed. In view of this, the writer has attempted to develop …
Program Evaluation And Review Technique, Anthony Immaculate Agresta
Program Evaluation And Review Technique, Anthony Immaculate Agresta
Theses
The problem of planning, controling and evaluating complex projects both engineering and non-engineering has existed as long as the projects themselves. In the past the approach of management to this problem has been one which was based heavily on the use of historical information. There have been very few attempts to predict and control the occurrence of the objective event of these projects.
This thesis deals with a review of this problem and a new approach to the planning, control, and evaluation of these complex projects. This new approach is the Program Evaluation and Review Technique (PERT) which was developed …
Zirconium-Hafnium Equilibria, Edwin Otto Eisen
Zirconium-Hafnium Equilibria, Edwin Otto Eisen
Theses
Equilibria in the thiocyanate-methyl isobutyl ketone process for the separation of zirconium and hafnium were studied. The effects of average thiocyanate concentration, feed acidity, and feed zirconium concentration on the separation factor of hafnium and the distribution coefficients of zirconium and hafnium were investigated. The hafnium separation factor was significantly dependent on the feed acidity but only slightly affected by the average thiocyanate concentration. No conclusion was reached about the effect of the feed zirconium conoentration on the hafnium separation factor. The polymerization of thiocyanic acid was found to be strongly dependent on the average thiocyanate concentration.
An Evaluation Of Oxide Films Of Lead And Tellurium Prepared By Reactive Sputtering, Frank Groom Peters
An Evaluation Of Oxide Films Of Lead And Tellurium Prepared By Reactive Sputtering, Frank Groom Peters
Theses
Oxide films of lead, tellurium, and their alloys were deposited by reactive sputtering onto substrates and analyzed by X-ray emission spectrography. The sputtering process involved the bombardment of a metallic cathode with positive ions in an atmosphere containing oxygen. The preparation and analysis of these films are described. The unstrained, homogeneous films have good adherence to the substrate and may be prepared to arbitrary thicknesses. Over a range of lead-tellurium oxide compositions these films are transparent and are glassy, rather than crystalline or amorphous solids.
From the analyses of the films by X-ray emission spectrography and known cathode compositions, it …
A Theory Of Self-Evaluating Discrete Communication Systems, Samuel D. Sterns
A Theory Of Self-Evaluating Discrete Communication Systems, Samuel D. Sterns
Electrical and Computer Engineering ETDs
No abstract provided.
Area Analysis Intelligence Plan, Chief Of Engineers, Department Of The Army, Robert Bolin , Depositor
Area Analysis Intelligence Plan, Chief Of Engineers, Department Of The Army, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
Reorganization of the Army and creation of the Defense Intelligence Agency by Secretary of Defense Robert McNamara lead to the creation of the Area Intelligence Analysis Agency.
For 20 years before 1962, the concept of technical intelligence had evolved in the US Army. Originally the Army Technical Services were charged with producing intelligence about German and Japanese weapons and about organizations analogous to the Army Technical Services in the German and Japanese armed forces.
The Army Technical Services were bureaus within the Headquarters, Department of the Army, which supplied weapons, equipment, and services to the Army, managed the careers of …
Us Army Foreign Science And Technology Center Planning Document, Robert Bolin , Depositor
Us Army Foreign Science And Technology Center Planning Document, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
In August 1962, the Army Foreign Science and Technology Center (FSTC) was created as a special-purpose military unit to produce technical intelligence. FSTC was subordinate to the commander of the newly created US Army Materiel Command (AMC). FSTC was created using personnel and resources of a number of Army technical intelligence agencies including:
- The Chemical Corps Intelligence Agency
- The Ordnance Technical Intelligence Agency
- The Signal Corps Intelligence Agency
- The Transportation Intelligence Agency
- The Quartermaster Intelligence Agency
- Organizations subordinate to the Corps of Engineers.
As well as from the Technical Intelligence Field Agency, ACSI
Background
On May 18, 1962, the Army …
An Evaluation Of State Mineral Taxation In Missouri, Jerry Wayne Huffman
An Evaluation Of State Mineral Taxation In Missouri, Jerry Wayne Huffman
Masters Theses
"A study was made to evaluate the present taxes levied on the mineral industry in the State of Missouri. The corporate income tax, corporate franchise tax, and general property taxes were examined, in addition to the mine inspection fees and methods of local assessment of mineral properties.
It is suggested that the State of Missouri revise the method of application of the general property tax to mineral properties. Utilization of the principle of taxation of future profits and employment of qualified appraisers would provide a more equitable application of the general property tax.
It is recommended that the present mine …
A Tunnel Diode Parametric Down Converter, Leland Lovell Long
A Tunnel Diode Parametric Down Converter, Leland Lovell Long
Masters Theses
"The problem, as presented, is to derive analytical expressions for the conversion gain, bandwidth, and noise figure of a self excited tunnel diode converter and to verify, if possible, the validity of these express- ions by building such a converter. These analytical results are presented and discussed. The converter circuit is shown along with the resulting intermediate frequency output. Gain and bandwidth measurements are also given. It is concluded that the self excited converter could very definitely be of value as a low noise pre-amplifying device in the ultra-high frequency and microwave frequency ranges"--Abstract, page ii.
The Experimental Determination And Prediction Of Ternary-Liquid Equilibria Data, Risdon William Hankinson
The Experimental Determination And Prediction Of Ternary-Liquid Equilibria Data, Risdon William Hankinson
Masters Theses
"Although the field of liquid extraction is of increasing importance in today's chemical industry, the ternary-liquid data so necessary to the design and study of extraction operations are available in the literature only to a limited extent. During the twentieth century, approximately 120 ternary-liquid systems have been studied. However, limiting solubility data have been reported for approximately one-third of these systems, and about 30 per cent of the equilibria data reported for the remainder of these systems are incomplete or inaccurate.
Within limits, liquid equilibria data may be calculated for a ternary system from the properties of its constituents which …
The Simulation Of Traffic Flow To Obtain Volume Warrants For Intersection Control, Russell Maclean Lewis
The Simulation Of Traffic Flow To Obtain Volume Warrants For Intersection Control, Russell Maclean Lewis
JTRP Technical Reports
No abstract provided.
A Model Study Of The Induction Log Applied To The Detection Of Asymmetrically Located Orebodies, Robert Walter Piekarz
A Model Study Of The Induction Log Applied To The Detection Of Asymmetrically Located Orebodies, Robert Walter Piekarz
Masters Theses
"This research project was undertaken to determine the possibility of using an induction log of the type applied in petroleum exploration, for the detection of conductive ore- bodies asymmetrically located with respect to a borehole. Since a mathematical analysis would be extremely complex, a model study was conducted, using graphite bodies of various shapes to simulate different modes of mineral occurence.
The investigation showed that these bodies were readily detectable, and were capable of yielding anomalous curves characteristic of their geometry. The values of apparent conductivity decreased rapidly with lateral displacement, from the logging tool, as expected, due to the …
The Removal Of Sub-Structure From Alpha Uranium, Albert E. Bolon
The Removal Of Sub-Structure From Alpha Uranium, Albert E. Bolon
Masters Theses
"The possibility of obtaining larger, perfect single crystals of alpha uranium by a modified strain-anneal method has been investigated. A -196°C tensile deformation was performed on pseudo single crystal rods which had been prepared by the phase transformation method. The specimens were subsequently annealed at 650°C.
It was found that by utilizing pseudo single crystals with a prescribed crystallographic orientation with respect to the tensile axis that recrystallized crystals of comparable size and perfection to those prepared by the grain coarsening method could be produced. Grain coarsening is the presently accepted process for preparing perfect single crystals of alpha uranium. …
Permeability Of Poly (Ethylene Terephthalate), James G. Harvey
Permeability Of Poly (Ethylene Terephthalate), James G. Harvey
Masters Theses
"Corrosion is a phenomenon which has been the subject of extensive research, in order to find a way to control or completely stop it. Two general methods, either placing the material which corrodes in an anti-corrosive atmosphere or protecting the material which corrodes from the corrosive atmosphere, are the chief means of preventing corrosion today.
The second method is probably most widely used presently. One of the most important methods of protection is by means of organic protective coatings, or paints, but at best these only retard corrosion, due to the fact that corrosive media e.g. water vapor, ions etc. …
Fm 55-8, Transportation Intelligence, 1961, Robert Bolin , Depositor
Fm 55-8, Transportation Intelligence, 1961, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
In 1961, American military intelligence was decentralized. The Army was responsible for all intelligence concerning foreign armed forces. Within the Army, the technical services – Transportation Corps, Signal Corps, Ordnance Corps, etc. – were responsible for intelligence concerning analogous organization in foreign organizations. The Transportation Corps was responsible for intelligence concerning foreign transportation equipment and services. Since there was no centralized American military intelligence organization, the Transportation Corps was tasked with supplying intelligence concerning foreign road and rail networks and waterways as well as ports and landing beaches and airfields.
This manual defines transportation intelligence and prescribes Army doctrine concerning …
Propagation Between Conducting And Nonconducting Media, Richard H. Williams
Propagation Between Conducting And Nonconducting Media, Richard H. Williams
Electrical and Computer Engineering ETDs
This paper contains a study of the electromagnetic fields caused by electric dipoles located within a highly conductive medium such as the sea. The theoretical treatment of this problem was begun in 1951 with Moore's thesis. "The Theory of Radio Communication between Submerged Submarines." Some subsequent major theoretical treatments of this problem have been published by Wait and Campbell, Lien, Banos and Wesley, and Anderson. All of the above work stems from Sommerfeld's classic paper published in 1909 where he considers the fields in the air caused by a vertical electric antenna located on the interface between the air and …
"Observations Of A Visiting Highway Engineer", J. Alan Proudlove
"Observations Of A Visiting Highway Engineer", J. Alan Proudlove
Kentucky's Annual Forum on Transportation
No abstract provided.
Engineer Intelligence Guide 32, Stream Hydrology And Hydraulic Structures, [1961], Army Map Service, Us Army Corps Of Engineers, Robert Bolin , Depositor
Engineer Intelligence Guide 32, Stream Hydrology And Hydraulic Structures, [1961], Army Map Service, Us Army Corps Of Engineers, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
Despite the title, this engineer intelligence guide (EIG) is a photo-interpretation handbook. It was intended to help photo-interpreters recognize streams, rivers, lakes, and other hydrologic features. The introduction says that the purpose is:
a) To give “the officer responsible for furnishing hydrologic and hydraulic data in an assigned area … an understanding of the usefulness and limitations of photography in furnishing the type of information needed …,” and to assist in planning requests for photographic coverages of the assigned area.
b) To give “photo-interpreters sufficient knowledge of hydrology and hydraulics to be able to satisfy requests for information that can …