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Articles 10111 - 10140 of 10902
Full-Text Articles in Entire DC Network
The Missouri Miner, September 28, 1956
The Missouri Miner, September 28, 1956
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, May 11, 1956
The Missouri Miner, May 04, 1956
The Missouri Miner, April 27, 1956
The Missouri Miner, April 07, 1956
The Missouri Miner, March 02, 1956
The Missouri Miner, February 03, 1956
The Missouri Miner, February 03, 1956
The Missouri Miner Newspaper
No abstract provided.
Investigation Of The Current Distribution On An Antenna In A Waveguide, David J. Freeman
Investigation Of The Current Distribution On An Antenna In A Waveguide, David J. Freeman
Masters Theses
"In a communication system composed of several networks and transmission systems, it is necessary for all parts of the system to be impedance matched so that medium energy transfer is possible.
One of the recent transmission systems which has been developed is the wave guide. With the advent of the wave guide the communication engineer is immediately faced with the problem of coupling existing systems and networks to his newly found mode of transmission.
Practically this coupling problem reduces to one of feeding radio frequency energy to the wave guide with some conventional transmission line such as a coaxial line. …
Promotion Of Dropwise Condensation By Silicones, Charles Orlando Reed Jr.
Promotion Of Dropwise Condensation By Silicones, Charles Orlando Reed Jr.
Masters Theses
"Within this rather extensive field of study, transfer of heat through fluid films and heat transfer during the condensation process have been the subject of considerable thought and investigation both from a theoretical standpoint and with the aim of collecting data on specific systems to aid the design and construction of equipment in which heat transfer is involved….
The phenomenum of dropwise condensation has not become a common one in industrial practive for a number of reasons, namely, the difficulty in maintaining the activity of the promoter without frequent makeup because of impermanent attachment and volatility, the difficulty in finding …
Thermal Conductivity Of Sodium Chloride Within The Temperature Range 375°K To 637°K, Paul E. Ohlsen
Thermal Conductivity Of Sodium Chloride Within The Temperature Range 375°K To 637°K, Paul E. Ohlsen
Masters Theses
"The transport of heat in dielectric solids is attributed entirely to lattice waves whereas in metals there is in addition a transfer by the flow of valence electrons. The thermal conductivity of a non-electrical-conductor is limited by a number of scattering processes giving rise to thermal resistances. Scattering results from impurity atoms and from vacancies and dislocations within the crystal structure and from the interaction of the lattice vibrations amongst themselves. Scattering also occurs at the boundaries of the crystal. The thermal resistance of an ideal crystal at low temperatures is due almost entirely to boundary scattering and at high …
The Effect Of Ph On Phase Reversals Of Protein-Stabilized Emulsions, Samuel Arthur Bradford
The Effect Of Ph On Phase Reversals Of Protein-Stabilized Emulsions, Samuel Arthur Bradford
Masters Theses
"The phase reversal of an emulsion from a system in which oil droplets are dispersed in a water medium to a system in which water droplets are dispersed in oil is dependent upon the interfacial characteristics of the liquids and the emulsifying agent being used, as well as the volume ratio of the two liquid phases. A preliminary investigation at this institution has indicated a possible relationship between phase reversal and the isoelectric point of gelatin used as the emulsifying agent. Since the properties of proteins vary so greatly with the hydrogen ion concentration, particularly near their isoelectric points, research …
Geothermometry At The Balmat No. 2 Mine, New York By The Fes-Zns System, Bruce R. Doe
Geothermometry At The Balmat No. 2 Mine, New York By The Fes-Zns System, Bruce R. Doe
Masters Theses
"Definition Of The Study. The study consists of an investigation of the variation in the temperature of formation of sphalerite on the 500 and 1500 ft levels of the Balmat zinc deposit at Balmat, New York. A subsidiary investigation was performed on the use of x-ray fluorescence as a means of chemical quantitative analysis. Twelve samples of sphalerite from the 500 ft level and 13 samples from the 1500 ft level were analyzed for atomic percent iron content by measuring Zn/Fe x-ray fluorescent ratios. The x-ray fluorescent ratios were standardized by ''wet" quantitative analysis. The results of the analyses are …
Phase Relationships In The Quaternary System Lime-Titania-Zirconia-Silica, Robert Martin Gruver
Phase Relationships In The Quaternary System Lime-Titania-Zirconia-Silica, Robert Martin Gruver
Doctoral Dissertations
"The phase compatibility relationships for the quaternary system lime-titania-zirconia-silica have been determined by a solid-phase-reaction technique.
Preliminary division of the system into Alkemade tetrahedra was based on the phases found in samples by X-ray diffraction analysis. These samples covered the entire volume of the tetrahedron in a systematic fashion. When the quaternary system had been divided into regions or compatible phases, an analytical method was used to calculate the phase composition of each sample. The relative amounts of each phase in a sample determined by X-ray analysis were compared with the calculated quantities, and agreement between the two methods verified …
Physical Properties Of Concrete At Early Ages, Peter G. Hansen
Physical Properties Of Concrete At Early Ages, Peter G. Hansen
Masters Theses
"One of the principal types of heavy duty pavements in use in Missouri and in many other states is that known as rigid type portland cement concrete.
There have been two major trends in this type of pavement design. One of these trends is the use of short slabs, i.e., 15 to 25 feet, with no reinforcement. Another trend consists of concrete slabs containing distributed reinforcement such as wire mesh or reinforcing bars with joints occurring at fairly large intervals of 50 to 100 feet. As loads on the highways have increased the designers have increased the slab thicknesses and …
Geology Of The Northwest Quarter Of The Washington Quadrangle, Missouri, James Anthony Martin
Geology Of The Northwest Quarter Of The Washington Quadrangle, Missouri, James Anthony Martin
Masters Theses
"This report presents the results of detailed mapping of the geology of the northwest quarter of the Washington Quadrangle, Missouri. Extensive mapping and stratigraphic work have been done in St. Louis and St. Charles Counties to the east and in Callaway and Boone Counties to the west. These two well studied areas are separated by approximately 45 miles. This study adds geologic information to the area immediately between the above locations. In this area a gentle regional dip to the north permits a study of sediments ranging in age from lower Ordovician in the south to late Paleozoic and Pleistocene …
Heat Transfer Coefficient Of Paint Films, Richard F. Justus
Heat Transfer Coefficient Of Paint Films, Richard F. Justus
Masters Theses
"Many studies of heat transmission have been carried out on various kinds of surfaces. But relatively few investigators have studied the loss of heat from a painted surface. Any surface will lose or gain heat by one or more of the three mechanisms of heat transmission: conduction, convection, and radiation. These mechanisms are thoroughly discussed by McAdams.
Heat transmission can be analyzed by determining thermal conductivity for conduction, overall coefficient for convection, and emissivity for radiation. The resistance concept is useful in indicating the various components of the overall coefficients and in analyzing problems in thermal conduction.
In studying heat …
The Thermal Conductivity Of Potassium Chloride At Elevated Temperatures, Wendell D. Miller
The Thermal Conductivity Of Potassium Chloride At Elevated Temperatures, Wendell D. Miller
Masters Theses
"The transport of heat in solids is attributed to the combined effect of the quantized vibrations of lattice points, or phonons, and the flow of valence electrons. In dielectric solids, the thermal conductivity is due almost entirely to phonons, while in metals the latter method preponderates. Scattering processes in dielectric solids, giving rise to thermal resistance, also serve to limit the thermal conductivity. Scattering results from vacancies, dislocations, interstitial atoms and phonon interaction. Crystal boundaries also function as scattering points and in crystals of small dimensions, this process is the most pronounced conductivity-limiting factor. At low temperatures the thermal resistance …
Determination Of The Effect Of Air-Entraining Agents On Certain Physical Properties Of Concrete At Early Ages, James Arthur Spilman
Determination Of The Effect Of Air-Entraining Agents On Certain Physical Properties Of Concrete At Early Ages, James Arthur Spilman
Masters Theses
"Air entrained concrete over the past eighteen years has received national recognition as a result of its satisfactory performance in highway concrete pavements and other concrete structures subjected to outside exposure.
Numerous highway departments over the entire United States have laid test slabs made of air entrained concrete. Among those to date are Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, Vermont, Maine, Illinois, Missouri and California. The primary purpose in building these test slabs was to investigate their durability or resistance to freezing and thawing and the action of various salts on air entrained concrete. The results of the test …
Correlation Of Weir Crest Depth, Froude Number, H/P Ratio, Weir Thickness, Paul Harrawood
Correlation Of Weir Crest Depth, Froude Number, H/P Ratio, Weir Thickness, Paul Harrawood
Masters Theses
"1. The Froude number criterion for weir flow was shown to be sound and accurate by experimental verification of the theoretical correlation of Froude number and critical depth. It was proved that sub-critical, critical and super-critical flows are correctly identified by the Froude number.
2. In order to accurately determine the Froude number, the actual flow section at the weir crest must be known. Because of end contractions, it does not have the same dimensions as the weir opening. For the Cipoletti weir, it is the product of the length of the crest and the crest depth, i.e., A= by. …
Pre-Cambrian Geology Of Washington County Area, Missouri, Gordon Blair French
Pre-Cambrian Geology Of Washington County Area, Missouri, Gordon Blair French
Masters Theses
"The Problem.
Washington County, Missouri contains a limited number of outcrops of pre-Cambrian igneous rocks, the majority of which are in the extreme southern part of the county. The known association of lead ore with buried or partially buried pre-Cambrian igneous knobs and ridges in this part of Missouri has led the St. Joseph Lead Company to prospect in areas known to contain these features. In its exploration program, the St. Joseph Lead Company has drilled a number of prospect holes which have encountered other occurrences of pre-Cambrian igneous rocks within the limits of Washington County. This drilling, correlated with …
The Missouri Miner, December 16, 1955
The Missouri Miner, December 16, 1955
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, November 18, 1955
The Missouri Miner, November 18, 1955
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, October 21, 1955
The Missouri Miner, October 21, 1955
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, September 30, 1955
The Missouri Miner, September 30, 1955
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, September 23, 1955
The Missouri Miner, September 23, 1955
The Missouri Miner Newspaper
No abstract provided.
Missouri S&T Magazine, September-October 1955, Miner Alumni Association
Missouri S&T Magazine, September-October 1955, Miner Alumni Association
Missouri S&T Magazine
No abstract provided.
The Missouri Miner, May 06, 1955
The Missouri Miner, April 08, 1955
The Missouri Miner, March 25, 1955
The Missouri Miner, February 25, 1955
The Missouri Miner, February 25, 1955
The Missouri Miner Newspaper
No abstract provided.