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Articles 7021 - 7050 of 8042
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Sufficiency Conditions For Constrained Optima, Cheng-Chun Huang
Sufficiency Conditions For Constrained Optima, Cheng-Chun Huang
Masters Theses
"The sufficiency conditions for constrained optimization problems are derived through the use of Lagrangian functions and through the introduction of the new concept of "constrained total derivatives." The relations can be used with equality and/or inequality constraints. The sufficiency conditions derived earlier by Phipps were corrected in this work--Abstract, page ii.
Endogenous Metabolism Of Polyporus Sulfureus. : Utilization Of Exogenous Carbohydrates And Fatty Acids, Shu-Mei Wang
Endogenous Metabolism Of Polyporus Sulfureus. : Utilization Of Exogenous Carbohydrates And Fatty Acids, Shu-Mei Wang
Masters Theses
"A strain of Polyporus sulfureus from the collection at the University of Missouri at Rolla was used in this investigation. Organisms of this genus have been reported to produce eburicoic acid in good yield and this was confirmed for the organism used in this study by the isolation and identification of eburicoic acid from the mycelium. Growth studies of this organism showed that 4% malt extract is a better medium than synthetic media containing asparagine, nitrate or nitrate plus 0.5% yeast extract as nitrogen sources. An examination of the pH of the culture medium led to the conclusion that regardless …
A Study Of Swirling Air Flow In A Converging Nozzle, Charles William Lineberry
A Study Of Swirling Air Flow In A Converging Nozzle, Charles William Lineberry
Masters Theses
"A study was conducted to determine the behavior of swirling air flow in a converging nozzle. Special instrumentation was constructed to obtain radial traverses of the flow at four axial positions. the data collected consisted of velocity, static pressure, and stagnation temperature. The flow pattern demonstrated the Ranque-Hilsh effect and reversed axial flow in the core region. As the flow entered the nozzle, it had the characteristics of a free vortex. At the exit plane the characteristics were those of a forced vortex. The converging nozzle caused an increase in the magnitude of the axial velocity component"--Abstract, page ii.
Spacing Of Explosive Charges, Calvin J. Konya
Spacing Of Explosive Charges, Calvin J. Konya
Masters Theses
"It is generally believed that the spacing of simultaneously initiated collar primed multiple charges is not dependent on the charge length. The stresses generated by explosive charges have been assumed to propagate through a material in a cylindrical manner. this assumption implied that the stress generated in any plane along the charge diameter would have been uniform in magnitude and direction. A finite explosive velocity along with a conical stress wave causes the stresses near the collar to differ from those farther down the column. for this reason, the spacing of charges would be dependent on charge length. An experimental …
Radiation And Annealing Characteristics In Neutron Bombarded Transistors Operated In The Inverse Configuration, Lo-Soun Su
Masters Theses
"When operating a silicon planar epitaxial transistor in the inverse configuration (i.e., with the emitter functioning as a collector and the collector functioning an emitter) the bulk space-charge volume of the new "emitter-base" junction is increased by a factor of 26.5 times that of the normal emitter-base junction. The carrier concentration in the new "emitter" is decreased by five orders of magnitude from that of the normal emitter, thus making it easier to investigate the effects of neutron radiation on the space-charge region and at the surface. Experiments using biasing of the new "emitter-base" junction during neutron radiation to change …
A Study Of Porous Membrane Evaporation For Desalination In A Flow System, Jing Ming Lee
A Study Of Porous Membrane Evaporation For Desalination In A Flow System, Jing Ming Lee
Masters Theses
"The purpose of this investigation was to study the simultaneous mass and heat transfer mechanism in evaporation through a porous membrane with a non-wettable surface. Such water repellent membranes permit the passage of water vapor, but not liquid water. The investigation concerned the mass transfer rate through the membrane pores with flow on one or both sides of the membrane. The water-repellent membrane separated a hot salt solution from the fresh water, and a copper sheet separated the fresh water from a cold salt solution. A three-channel evaporator-condenser was used, and the membrane consisted of glass fiber paper treated with …
A Study Of Bismuth Ferrate And Bismuth Manganate In Solid Solution With Lead Titanate, Harris C. Jones
A Study Of Bismuth Ferrate And Bismuth Manganate In Solid Solution With Lead Titanate, Harris C. Jones
Masters Theses
"A new sample holder for measuring the high frequency dielectric constant of ferroelectrics at high temperature was constructed. The new sample holder eliminated discontinuities in the slotted line and improved the electrical contact between the ceramic and brass components. Measurements of the high frequency dielectric constant of an aged sample of 90% BiFeO₃ - 10% PbTiO₃ were made as a function of temperature using the slotted line technique. The dissipation function for the aged sample was found to have a more normal behavior near the Curie point than the virgin samples previously measured. Resistivity measurements were made as a function …
Instrumentation Of A Shock Tube Facility, James Everett West
Instrumentation Of A Shock Tube Facility, James Everett West
Masters Theses
"The theory of schlieren and interferometer systems was described and related to studies of shock waves in a shock tube. An interferometer was procured and a schlieren system was modified for use with the UMR shock tube facility. The design and construction of a base for the systems and window assemblies for the shock tube comprised the major portion of the work on this project. A short series of tests were run to ascertain the compatibility of the instrumentation to the UMR shock tube facility. While no schlieren photograph of the shock wave was obtained, the system was shown to …
An Intensity Regulation System For A Monochromator, David A. Wayne
An Intensity Regulation System For A Monochromator, David A. Wayne
Masters Theses
"In the investigation of phenomena involving both optical intensity and wavelength, an instrument is often desired which allows one of the quantities to be held constant while the other is varied. A relatively inexpensive system is described which utilizes a commercial grating monochromator and external feedback electronics to regulate the output intensity as the wavelength is varied. In this system, a sample of the output intensity is taken by a photosensor with known spectral response. The output of the photosensor is then compared electronically with that of a pre-programmed function generator which cancels nonlinearities in the photo-sensor. The resulting signal …
Absolute Specification Of X-Ray Spectra By Laplace Transform Analysis Of Attenuation Data, Gerald Robert Lusk
Absolute Specification Of X-Ray Spectra By Laplace Transform Analysis Of Attenuation Data, Gerald Robert Lusk
Masters Theses
"A well characterized, variable plate separation ion chamber was utilized as a detector to collect x-ray attenuation data for generating information on the Laplace transform predicted spectrum of a 50 KvCP conventional x-ray tube. The variable plate separation feature allows one to include a wavelength dependent correction to the detector response which is associated with the hardening of the x-ray spectrum as it traverses the attenuating material. With this correction, the conventional two-term Laplace transform was shown to approximate independently the bremsstrahlung and characteristic L radiation from the tungsten target. The detector provides an absolute statement of the target-referenced x-ray …
Design And Construction Of A Liquid Nitrogen Cryostat For Use In A Swimming Pool Type Reactor, Bruce B. Joiner
Design And Construction Of A Liquid Nitrogen Cryostat For Use In A Swimming Pool Type Reactor, Bruce B. Joiner
Masters Theses
"The continued expansion of the nuclear reactor facility and the nuclear engineering program dictates the need that a liquid nitrogen cooled cryostat be available at the reactor. This unit would be available for use in graduate and undergraduate laboratories and for graduate research. A liquid nitrogen cooled cryostat capable of maintaining a sample between 77°K to 80°K for an extended period of time in or adjacent to the core of the reactor was designed, constructed, and successfully operated. Recommendations were made for possible modifications to expand the versatility of the system"--Abstract, page ii.
The Modeling, Fabrication, And Testing Of An Instantaneous Torque Measuring System, Thomas Phillip Hertel
The Modeling, Fabrication, And Testing Of An Instantaneous Torque Measuring System, Thomas Phillip Hertel
Masters Theses
"The purpose of this work was to obtain a measuring system to experimentally determine the instantaneous magnitude and frequency of the torques from zero to 2400 Hertz produced by a single phase motor. This paper explains the methods employed in designing and fabricating a measuring system and shows the results from tests using this equipment. It was found that a measuring system based on the determination of the instantaneous value of the stator's reaction torques could be realized. Also, it was found that some simple methods of computation could be used to find the magnitudes of the frequency components comprising …
Corrosion Rates And Electrokinetics Of Cobalt And Cobalt-Rich Cobalt-Iron Alloys In Sulfuric And Hydrochloric Acids, Cheng Tzong Horng
Corrosion Rates And Electrokinetics Of Cobalt And Cobalt-Rich Cobalt-Iron Alloys In Sulfuric And Hydrochloric Acids, Cheng Tzong Horng
Masters Theses
"Corrosion rates for Co and Co-rich Co-Fe alloys were determined in sulfuric and hydrochloric acids under both deaerated and oxygenated conditions. For the purpose of comparison, corrosion rates of Co cut from metal sheet were also determined in the same environments as those of sintered alloys. Sintered alloys were inferior to solid Co as corrosion resistant materials. It was found that the surface was more corrosion resistant than the interior. Thus after long exposure to the corrosive acid, the samples became porous inside while the surfaces remained substantially intact. Oxygen had a pronounced effect in accelerating the corrosion of Co …
Thixotropic Effects In A Clay-Water System, John Arthur Mathes
Thixotropic Effects In A Clay-Water System, John Arthur Mathes
Masters Theses
"Fundamental aspects of thixotropic phenomena are described, and previous investigations of thixotropic behavior in soil systems are summarized. The complex nature of the thixotropic phenomena as well as its general occurrence in fine grained soils is described. As existing hypothesis for thixotropic behavior based on initial non-equilibrium conditions is examined. Experimental results, as determined from a testing program on the Putnam clay, verify this hypothesis. The rate and magnitude of thixotropic strength increases of the Putnam clay were determined. Shear strength determinations were made by the unconfined compression and laboratory vane shear tests. The results of the tests were compared …
The Analysis Of A Phase-Locked Loop By The Functional Expansion Method, Hugh Francis Spence
The Analysis Of A Phase-Locked Loop By The Functional Expansion Method, Hugh Francis Spence
Masters Theses
"The time response of a generalized second order Phase-Locked Loop to step and ramp inputs is described by a functional power, truncated at the third order term. The responses given by the functional power series differs from the analog simulation by less than 6% when the inputs are below 2.0 rad (rad/sec)"--Abstract, page ii.
Shear Strength Behavior In Silts And Clay Mixtures, Alan T. Jackson
Shear Strength Behavior In Silts And Clay Mixtures, Alan T. Jackson
Masters Theses
"A series of consolidated undrained triaxial tests with pore pressure measurements were performed on laboratory sedimented samples having various known silt to clay content ratios. The clay used was commercial grundite clay from Goose Lake, Illinois, and the silt used was extracted from Lebanon Silt Loam from Rolla, Missouri. Silt was mixed with clay in the following percentages by weight: 0%, 20%, 40%, 50%, and 80%. Results indicate an increasing angle of internal friction with an increase in silt content. The unconfined compressive strength of the samples remained constant, as would be expected in a clay, with increasing silt content …
Constant Horizontal Force Machining Through Flash Welded Steel Bars Of Varying Hardness, Donald Naeger
Constant Horizontal Force Machining Through Flash Welded Steel Bars Of Varying Hardness, Donald Naeger
Masters Theses
"The purpose of this experiment was to determine the effect of a constant horizontal force applied to the carriage of a lathe as it turned a piece of stock which consisted of two steel bars, of different hardness, flash welded together. This experiment was performed on a lathe to which a pulley system with a mechanical advantage of six was attached to the carriage. The strain on the tool was measured both in the horizontal and vertical directions by a tool dynamometer on which eight strain gages were mounted. The strain gages were calibrated on a Tinius-Olsen testing machine. The …
Computer Simulation Of Scraper-Pusher Behavior During Early Open Pit Mining Operations, Martin Alan Thieme
Computer Simulation Of Scraper-Pusher Behavior During Early Open Pit Mining Operations, Martin Alan Thieme
Masters Theses
"A method has been developed for study and evaluation of overburden removal systems in open pit mining. The computer simulation method shows the effect of vehicle and course characteristics and the control of loading time on overall production and cost per unit of overburden removed. Data are available from vehicle manufacturers and from past mining experience. The data are punched onto processing cards and the system is then simulated and analyzed using a digital computer. The products of the system simulation consist of a tabulated listing of all control variables after each simulated vehicle loading and a system summary predicting …
Radar Waveform Synthesis By Mean-Square Optimization Techniques, John D. Wolf
Radar Waveform Synthesis By Mean-Square Optimization Techniques, John D. Wolf
Masters Theses
"The ambiguity function is derived and its properties useful to radar waveform analysis are investigated. Synthesis of the phase-modulated waveform whose ambiguity function is the minimum mean-square estimate of some desired ambiguity function is accomplished by expanding the phase modulation function in an orthogonal series. The ambiguity function, defined as a magnitude, and the value of an arbitrary cost functional defined on the ([tau],wd) plane is then expressed in terms of the coefficients of the orthogonal series. thus, the "optimum" waveform can be determined by solving the variational equations for the coefficients. Numerical examples are presented for the …
A Descriptive Analysis Of The Kalamazoo Consultation Center For Clergy, Arthur Eckert Bilyeu
A Descriptive Analysis Of The Kalamazoo Consultation Center For Clergy, Arthur Eckert Bilyeu
Masters Theses
No abstract provided.
Effect Of Nitrogen Fertilization On The Establishment, Density, And Strength Of Merion Kentucky Bluegrass Sod Grown On A Mineral Soil, Kent W. Kurtz
Effect Of Nitrogen Fertilization On The Establishment, Density, And Strength Of Merion Kentucky Bluegrass Sod Grown On A Mineral Soil, Kent W. Kurtz
Masters Theses
No abstract provided.
The Evaluation Of Certain Serum Iron Analyses By Atomic Absorption Spectroscopy, James Allan Boersma
The Evaluation Of Certain Serum Iron Analyses By Atomic Absorption Spectroscopy, James Allan Boersma
Masters Theses
No abstract provided.
The Development Of Parzival As An Ideal Knight, Susan S. Huston
The Development Of Parzival As An Ideal Knight, Susan S. Huston
Masters Theses
No abstract provided.
A Review Of The Short Forms Of The Wechsler Intelligence Scale For Children, Edward Gerald Tava
A Review Of The Short Forms Of The Wechsler Intelligence Scale For Children, Edward Gerald Tava
Masters Theses
No abstract provided.
Cell Free Amino Acid Incorporating Systems From Mesophilic And Thermophilic Bacteria, Nisson Schechter
Cell Free Amino Acid Incorporating Systems From Mesophilic And Thermophilic Bacteria, Nisson Schechter
Masters Theses
No abstract provided.
Achievement Motivation And Leadership Opinion, John Maxwell Clark
Achievement Motivation And Leadership Opinion, John Maxwell Clark
Masters Theses
No abstract provided.
Measurement Of Ultrasonic Absorption In Liquids By A Thermal Method, Ronald J. Tanis
Measurement Of Ultrasonic Absorption In Liquids By A Thermal Method, Ronald J. Tanis
Masters Theses
No abstract provided.
Some Variables In Conditioned Suppression With Humans, David Wayne Mulder
Some Variables In Conditioned Suppression With Humans, David Wayne Mulder
Masters Theses
No abstract provided.
The Application Of Behavioral Principles To The Modification Of An Acting Out Child's Classroom Behavior In A Regular Classroom, Marjorie M. Mcarthur
The Application Of Behavioral Principles To The Modification Of An Acting Out Child's Classroom Behavior In A Regular Classroom, Marjorie M. Mcarthur
Masters Theses
No abstract provided.
An Investigation Of The Refractive Index Of Selected Liquids In The Ultraviolet, Robert Bruce Eaton
An Investigation Of The Refractive Index Of Selected Liquids In The Ultraviolet, Robert Bruce Eaton
Masters Theses
No abstract provided.