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Articles 4651 - 4680 of 4904
Full-Text Articles in Entire DC Network
Understanding Fractions In The Sixth Grade, Marvin T. Carwell
Understanding Fractions In The Sixth Grade, Marvin T. Carwell
Masters Theses
No abstract provided.
An Introduction To The Derivative Of A Polynomial, Floyd A. Miller
An Introduction To The Derivative Of A Polynomial, Floyd A. Miller
Masters Theses
No abstract provided.
History Of Pana Public Schools, John W. Strader
History Of Pana Public Schools, John W. Strader
Masters Theses
No abstract provided by author.
Intuition On Trial, Virginia Christian
Effects Of The Attitudes Of The White People Upon Negro Education, Elizabeth R. Gordon
Effects Of The Attitudes Of The White People Upon Negro Education, Elizabeth R. Gordon
Masters Theses
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. …
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 …
The Effect Of Metallic Naphthenates On The Oxidation Of Linoleic Acid, David Elliott Troutner
The Effect Of Metallic Naphthenates On The Oxidation Of Linoleic Acid, David Elliott Troutner
Masters Theses
"It has been known for many years that certain metallic soaps catalyse the drying of oils. A great deal of information is available concerning the use of these soaps, but there is little knowledge of the actual manner in which the soaps catalyse drying. As the drying is known to be an autoxidation reaction, it is generally believed that the soaps must affect the oxidation of the oil in some way. The work described in this thesis was undertaken to gain some knowledge of the mechanism of the catalysis, and to correlate the effect of the soaps on the drying …
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 …
A Comparative Study Of Four Office Machines Commonly Used In The Office Practice Course At Eastern Illinois State College, William Henry Reineke
A Comparative Study Of Four Office Machines Commonly Used In The Office Practice Course At Eastern Illinois State College, William Henry Reineke
Masters Theses
No abstract provided.
An Analysis Of Three Methods Of Financing High School Athletics, Richard E. Adair
An Analysis Of Three Methods Of Financing High School Athletics, Richard E. Adair
Masters Theses
No abstract provided.
Results Of A Survey Of Business Department Graduates Of Eastern Illinois State College, 1946-1953, Fred Davison
Results Of A Survey Of Business Department Graduates Of Eastern Illinois State College, 1946-1953, Fred Davison
Masters Theses
No abstract provided by author.
A Study Of Integration And Its Relation To Music Education, Dorcas Buehler Herren
A Study Of Integration And Its Relation To Music Education, Dorcas Buehler Herren
Masters Theses
No abstract provided by author.
Provisions For Development Of Leadership In Gifted Children In The Elementary School, Elmer David Dalton
Provisions For Development Of Leadership In Gifted Children In The Elementary School, Elmer David Dalton
Masters Theses
No abstract provided.
The Guidance Practices At Mary W. French School, Decatur, Illinois, And Some Suggestions For Their Improvement, Hazel H. Dunivan
The Guidance Practices At Mary W. French School, Decatur, Illinois, And Some Suggestions For Their Improvement, Hazel H. Dunivan
Masters Theses
No abstract provided.
Guidance In A One-Room School, Andrew William Komarchuk
Guidance In A One-Room School, Andrew William Komarchuk
Masters Theses
No abstract provided.
A Survey Of The Reading Program In The Charleston Community Unit School District Number One And Recommendations For Improving The Program, Francis X. Vogel
A Survey Of The Reading Program In The Charleston Community Unit School District Number One And Recommendations For Improving The Program, Francis X. Vogel
Masters Theses
No abstract provided.
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 …
Direct Correlation Functions For Liquid Argon, Arthur Reetz Jr.
Direct Correlation Functions For Liquid Argon, Arthur Reetz Jr.
Masters Theses
"The purpose of this research is to obtain the direct interaction functions from the liquid argon x-ray scattering structure factors of Eisenstein at various temperatures and over a wide range of interatomic separations"--Introduction, page 1.
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 …
Instructional Aids In Art For Elementary Teachers, Jeanne M. Fox Schier
Instructional Aids In Art For Elementary Teachers, Jeanne M. Fox Schier
Masters Theses
Chapter I
The Problem and Its Background
The Problem
The problem of this investigation is to develop a file of instructional aids in the art for use by elementary teachers.
Further Studies Of Vapor-Liquid Equilibria Of Methanol-Ethylene Glycol-Water, Herbert Benjamin Sachs
Further Studies Of Vapor-Liquid Equilibria Of Methanol-Ethylene Glycol-Water, Herbert Benjamin Sachs
Masters Theses
"The freezing points of the ternary system methanol-glycol-water have been investigated by Conrad, Hill and Ballman. The vapor-liquid equilibria of the same system was studied by Sjoberg. These investigations were carried out to determine the properties of the system relative to its possible use as an antifreeze mixture.
Since Sjoberg's work in 1948, the improved Othmer equilibrium still has been introduced for vapor-liquid experimental determinations. It is therefore the purpose of the present investigation to evaluate the use of this still, compare results with those obtained by Sjoberg, and analyze ternary mixtures for the entire range of glycol concentrations.
The …
Mathematicians And Royalty: A Historical Survey, Loren W. Pixley
Mathematicians And Royalty: A Historical Survey, Loren W. Pixley
Masters Theses
No abstract provided.
Student Guidance Services: Needs, Aims And Administration, Irl L. Schuyler
Student Guidance Services: Needs, Aims And Administration, Irl L. Schuyler
Masters Theses
No abstract provided.
A Guidebook For Orientation In The Litchfield Junior High School, Robert Donald Hall
A Guidebook For Orientation In The Litchfield Junior High School, Robert Donald Hall
Masters Theses
No abstract provided.
Separation Of Germanium, Lead, Zinc, And Cadmium By Anion Exchange, Franklin Maynard Hill
Separation Of Germanium, Lead, Zinc, And Cadmium By Anion Exchange, Franklin Maynard Hill
Masters Theses
"The object of this study was to investigate the ion exchange behavior of germanium and apply the anion exchange technique for the separation of germanium, cadmium, lead, and zinc.
A new interest in germanium has developed because of its recent industrial application as a semi-conductor. Analytical methods for the separation and analysis of germanium in low concentrations have not been perfected. Krause and Johnson, in a recent review, discussed and evaluated a number of methods.
Most of the methods for the analysis of germanium require a preliminary separation. The analytical methods for germanium reported in the literature are troublesome and …