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A Determination Of The Surface Tension Of Bismuth, Cadmium, Tin, And Lead, Edward Mckee Chandler

Masters Theses

"Various methods have been employed for the determination of surface tension including capillary rise, drop weight, maximum bubble pressure, sessile drops on flat surfaces, sessile bubbles formed underneath flat surfaces, and the shape of pendent drops. Each method is subject to characteristic advantages and disadvantages. Only two of these will be discussed. The method of maximum bubble pressure allows the formation of a fresh surface for every bubble but does not permit the study of a given sample over a period of time. The sessile drop in direct contrast, allows the observation of the same sample over any period of …

A Grazing Incidence Vacuum Grating Spectrograph For Far Ultra Violet Spectroscopy, Lawrey Huber Chapin

Masters Theses

"Spectroscopy, in the region of the far ultraviolet from 100 Angstroms to 1000 Angstroms, requires special equipment and techniques, inasmuch as these wavelengths are highly absorbed by air. Many gases have resonant frequencies corresponding to the wavelengths mentioned and hence absorption bands appear in the spectrograms obtained by using spectrographs for the visible region. One solution of the problem of obtaining data in this region is to construct a spectrograph from which all intervening gas molecules have been removed, thus eliminating the absorbing material. A vacuum of 10⁻⁴ mm. of mercury is necessary to reduce the absorption to a value …

The Reflection Coefficient At The Truncated Corner Of A Rectangular Wave Guide, John Raymond Barcroft

Masters Theses

"The term wave guide refers to a hollow conducting tube (usually of rectangular or circular cross section) filled with a dielectric (or vacuum) and used for the transmission of electromagnetic waves. We shall consider the guide to be bounded by a perfect conductor and to be filled with a lossless homogeneous isotropic dielectric (or vacuum). The electromagnetic wave in the guide must of course satisfy Maxwell's equation. It must also satisfy the boundary condition that there be no tangential component of electric field at the surface of the conductor. If the electromagnetic waves traveling along the guide meet a discontinuity …

An Ecological Study Of The Foraminifera Of Mason Inlet, North Carolina, Daniel N. Miller Jr.

Masters Theses

"Mason Inlet. North Carolina is a lagoonal marsh area with warm-temperate water, the salinity ranging from fresh to salt water. Nine collecting stations comprise an ecological gradient across the environment.

Forty-two species of foraminifera are recorded from the inlet, ranging in their affinities from brackish water to open-sea facies. Several extensions of range are recorded both northward and southward.

Substratum conditions apparently control the distribution of foraminifera within the inlet. Clean, fine sand provided the largest faunal populations. A depauperate assemblage was found in an inorganic, argillaceous substratum. The largest population of arenaceous forms was found at the channel through …

Geology Of The Crystal Mine, Hardin County, Illinois, John Amsden Emery

Masters Theses

"The study of the geology and mineralization of the Crystal Mine was undertaken at the suggestion of Mr. Dodson G. Gibson of the Crystal Fluorspar Company, who allowed access to the mine and its records for this purpose. The problem was to develop a system of prospecting the so-called bedded-replacement fluorspar deposits of Hardin County, Illinois. It is believed that an economically feasible method has been developed. This method involves not only the actual finding of fluorspar, but also serves as a guide in revealing structural trends suggestive of mineralization.

The fluorspar deposits of the Crystal Mine are representative of …

Further Studies Of The Reactions Of Quinoxaline, 2-Methyl-, And 2,3-Dimethylquinoxaline, Chester E. Hamilton

Theses and Dissertations

A long term research program into the chemistry of quinoxalines has been instituted at Brigham Young University. The literature of quinoxaline chemistry was reviewed and assembled in one paper. Methods of preparation of 2,3-dimethyl- and 2- methylquinoxaline were studied and improved. The bromination of 2,3-dimethylquinoxaline using N-bromosuccinimide was accomplished and an anil addition using quinoxaline and phenyllithium was achieved. Efforts to prepare vinylquinoxalines were unsuccessful. In order to pursue an investigation into the numerous reactions of the 1,4 addition type, a method of preparations of vinyl-quinoxalines must be achieved. In the present investigation, various methods of synthesis of vinyl- and …

Areas In Nebraska Of Subirrigated Vegetation, John Elder

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties (Includes Text Analyses And Thesis Material), Vincent H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Application Of High Frequency Oscillations To Chemical Analysis., Thomas Shepherd Burkhalter

LSU Historical Dissertations and Theses

No abstract provided.

Some Physical And Chemical Properties Of Loess Deposits In The Lower Mississippi Valley., Ellis Louis Krinitzsky

LSU Historical Dissertations and Theses

This study presents a general picture of loess in the Lower Mississippi Valley. Loess is recognized as unstratified, calcareous, slightly plastic, porous loam with an average grain size distribution between 0.05 and 0.01mm. diameter. Materials meeting this definition but lacking in calcium carbonate are termed "leached loess" when in association with loess and "brown loam" when not in association with loess.

Loess has been found to occur chiefly as pseudo-anticlinal caps on hills. It is mapped as occurring within an area averaging 10 to 15 miles in width extending from southern Illinois southward along the eastern walls of the Lower …

Quaternary Geology Of Southeast Texas., Hugh Allen Bernard

LSU Historical Dissertations and Theses

No abstract provided.

Studies In The Application Of Extraction Methods To Analytical Chemistry., Jack Kenneth Carlton

LSU Historical Dissertations and Theses

No abstract provided.

An Index To The Literature On Digenetic Trematodes From Fishes, Richard William Bond

University of the Pacific Theses and Dissertations

The primary purpose of this compilation is to facilitate for pertinent literature in the searches involving digenetic trematodes from fines. The index may be used by the investigator to determine what, Af any, 14torature has appeared concerning the animal or group of animals with which he is working; and the literature is cross-indexed in such a way that it may be approached from the various angles commonly used in trematodes investigations. There are included, for example, an index to hosts, an index to larval stages of development and a partial geographic index to adult trematodes of fishes.

Selected Studies Of Organic Reagents., Louis Johnson Conrad

LSU Historical Dissertations and Theses

No abstract provided.

The Synthesis And Insecticidal Activity Of Some Halogenated Aromatic Ethers., Tien-Chih Chen

LSU Historical Dissertations and Theses

No abstract provided.

A Petrographic Study Of The Eocene Jackson Group Of Mississippi And Adjacent Areas., Ming-Shan Sun

LSU Historical Dissertations and Theses

No abstract provided.

The Conservation Of Systems In Phase Space As Applied To The Liquid State., Ernest Ikenberry

LSU Historical Dissertations and Theses

No abstract provided.

Purification Department Of Zinc Leaching Division At Anaconda, Montana, J. L. Brown

Bachelors Theses and Reports, 1928 - 1970

The original smelter, known as the Upper Works smelter, was located on the north side of the Warm Springs Creek, just 2 miles east of the city of Anaconda and 26 miles from the city of Butte. By the year 1894 this smelter had a capacity of 500 tons of ore a day.

The Monadnock Volume 24, Number 1, December 1949, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 24, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

The Species Concept: A Semantic Review, Benjamin H. Burma

Department of Earth and Atmospheric Sciences: Faculty Publications

In some respects, it is extremely unfortunate that names are ever attached either to ideas or objects. The false attachment of names to ideas or objects similar but not identical with the original can work harm far exceeding the benefits conferred by having a convenient label. The name "species" has come to such a state. As we shall see, a species, be it plant or animal, is a fiction, a mental construct without objective existence. Animal, and plant, lines of descent exist in a four-dimensional continuum. To set up species in this continuous line of descent, we must chop it …

The Vanadium Plant Of The Anaconda Reduction Works, Tom Liss

Bachelors Theses and Reports, 1928 - 1970

No complete history of mining and smelting will ever be written that does not include a major discussion of the Butte district. The colorful tale of this area plays a major role in the interesting stories of mining. In the fields of mining methods, labor relations end financial manipulations, the Butte area has set a standard.

Press Reports (1949), Walter Lawrance

Walter Lawrance Papers

No abstract provided.

Addition Of Sodium Nitrate (1949), Walter Lawrance

Walter Lawrance Papers

No abstract provided.

Analytical Data, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Some Reactions Of Tris (Hydroxymethyl) Aminomethane, Ralph Walton Raiford

Master's Theses

Most of the work on alkanolamines has been confined to the preparations and reactions of the ethanolamines. The results reported herein deal with the reactions of H₂NC(CH₂OH)₃, tris(hydroxymethly)aminomethane, which is a beta-hydroxy amine.

An Electrochemical Determination Of The Thermodynamic Properties Of Silver And Mercury Sulfides, Arthur G. Cole

Theses and Dissertations

The problem consists of measuring accurately the free energy of formation, heat of formation, entropy, and solubility product constant of silver and mercury sulfides, and is a part of a larger study extending to many other metal sulfides. The confusion now existing in the chemical literature amply justifies a study of this nature. The thermodynamic properties of several important metal sulfides have never been measured, and the only values available for them are estimates. Determinations of the properties of many other metal sulfides have been carried out, but the results given by different authors often differ widely.

Factors Influencing The Solubility And Oxidation Of Commercial Iron Pyrites, Neldon Lamont Jensen

Theses and Dissertations

Studies were made (1) to determine the effect of air and oxygen and verying concentrations in distilled water, on the solubility of iron pyrites; (2) to determine the effect of acid, base and buffer solutions of varying pH; (3) to observe the effect of some oxidizing and reducing agents on the solubility of iron pyrites. These investigations would aid in deciding the possibilities of using iron pyrites as a soil conditioner.

Peactivity Of Alpha, Beta-Unsaturated Ethers With Grignard Reagents, Robert A. Walker

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

An Investigation Of The Radioactivity Of Oilwell Drilling Fluid, With Depth, Of Wells In The Berland Field Of Rooks County, Milford W. Johnston

Master's Theses or Doctor of Nursing Practice

In reviewing the foregoing literature and in consideration of the very important place of the state of Kansas in the nation's production of petroleum, it was thought that possibly a contribution might be made to the general subject of geophysical prospecting for oil by the adoption and execution of the problem proposed by the title of this thesis. Since a similar but more scattered study of this problem had been previously made by Lippert with the use of an electroscope, it was considered worth-while to repeat the electroscopic observations together with Geiger-Mueller Counter observations on a new series of wells …

A Determination Of The Decomposition Potential Of Sulfamic Acid And Certain Of Its Metallic Salts, Francis J. Shell

Master's Theses or Doctor of Nursing Practice

The present investigation of decomposition potentials, or the potential where continuous electrolysis begins, was suggested by a paper by Choguill (5) on the electrodeposition of some metals from solutions of their sulfamates. Sulfamic acid or amidosulfonic acid H2N•SO2•OH is a strong inorganic acid obtained from chlorosulfonic acid and ammonia, or by heating urea with fuming sulfuric acid. The latter process is now used on a commercial scale. The acid forms white or colorless non-hygroscopic crystals that are stable when dry but in solution at elevated temperatures it slowly hydrolyzes forming ammonium bisulfate.