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The Design And Construction Of An Electrolytic Cell For Aluminum Reduction, Thomas H. Melrose

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation was to design and construct a laboratory size electrolytic cell in which to reduce alumina, using the same basic materials that are used in a commercial size cell. The cell was designed to have a capacity of approxi­mately 100 grams of metallic aluminum produced every 8 hours. The cell was constructed so it could be operated continuously.

On A Theorem Of Gelfand And Kolmogoroff Concerning Maximal Ideals In Rings Of Continuous Functions, Leonard Gillman, Melvin Henriksen, Meyer Jerison

All HMC Faculty Publications and Research

This paper deals with a theorem of Gelfand and Kolmogoroff concerning the ring C= C(X, R) of all continuous real-valued functions on a completely regular topological space X, and the subring C* = C*(X, R) consisting of all bounded functions in C. The theorem in question yields a one-one correspondence between the maximal ideals of C and those of C*; it is stated without proof in [2]. Here we supply a proof (§2), and we apply the theorem to three problems previously considered by Hewitt in [5].

Our first result (§3) consists of two simple constructions of the Q-space vX. …

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Volume 1, Number 2 - May 1954

The Entropy

The Entropy (also published as the Providence College Journal of Physics and Chemistry) was an undergraduate scholarship journal published by the Phi Chi Club of Providence College. (Volume 1, Number 2 - May 1954 - 10 pages in total.)

Ion Exchange Capacities Of Soils, Jeanne Ellis

Student Scholarship

This study investigates the chemical and physical properties of various soil types in St. Charles County, Missouri, with a primary focus on their cation exchange capacities. The author examines how plants obtain essential nutrients through an exchange process where root hairs release hydrogen ions in trade for metallic cations like calcium, magnesium, and potassium held on the surface of clay and humus colloids. To provide a comprehensive assessment of soil productivity, the research utilizes a photoelectric colorimeter to measure seven key components: organic matter, extractable phosphorus, pH, and exchangeable hydrogen, potassium, magnesium, and calcium. 

The experimental phase involved analyzing samples …

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

The Effect Of The Bicarbonate Ion On The Respiration Of Excised Roots, Gene W. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For many years man has been searching for a cure for lime-induced chlorosis. This disease is prevalent throughout the entire western United States and is characterized by a yellowing of the leaves, destruction of the chlorophyll, and eventual death of the plant. It has brought devastation of fruit orchards in Utah, costing fruit producers millions of dollars. Hardly any county in Utah is free from this destructive nutritional disease.

Soil Additives And Their Effect On The Yield Of Various Crops And The Physical Properties Of An Agricultural Soil, Gaylen L. Ashcroft

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It is generally accepted that soil structure is very important in keeping productivity at a high level. When soils are loose and friable, mechanical impedance to root growth and seedling emergence is greatly reduced. Such soils infiltrate greater quantities of precipitation, are better aerated, and possess a more favorable temperature than puddled soils. Essential plant nutrients are also more easily available in well aggregated soil.

In the last few years, several synthetic soil additives have been placed on the market. Extravagant claims have been made about the ability of these amendments to maintain soil structure, without a sound body of …

Analytical Studies Of Some Acyloin-Oximes., Hans A. Suter

LSU Historical Dissertations and Theses

No abstract provided.

The Velocity Of Ultrasonics In Liquids, Mack A. Breazeale

Masters Theses

"In acoustics the term ultrasonics is used to refer to those frequencies which are above the range of human hearing; that is, frequencies above approximately 20,000 cycles per second. Since the laws of sound which are valid for the audible range are also valid in the ultrasonic range and since the wave length of ultrasonics is much shorter than that of audible sound, ultrasonic has proved very valuable in the calculation of both the velocity and the absorption coefficient of sound in various media. This is especially notable in the case of liquids, where the velocity of sound is much …

Properties Of American Beech In Tension And Compression Perpendicular To The Grain And Their Relation To Drying, Eric L. Ellwood

Yale School of the Environment Bulletin Series

No abstract provided.

Geology Of The South Half Of The Meramec Spring Quadrangle, Missouri, Howard Joseph Yorston

Masters Theses

"This report is a continuation of the work initiated by Mueller in his mapping of the north half of the Meramec Spring Quadrangle. The completion of this work provides not only a geologic map of the whole quadrangle but also completes the mapping of the geology of a strip of quadrangles extending from Rolla to the Mississippi River. In addition to being a step closer to the goal of complete geologic coverage for the state, this work will be of value to those concerned with the prediction of depths of wells drilled in search for water, which in view of …

Foraminifera Of The Type Section Of The Archusa Marl Of Mississippi (Eocene, Claiborne Group, Wautubbee Formation), Nathan Eugene Crockett

Masters Theses

"The type locality of the Archusa marl member of the Wautubbee formation is situated south of Quitman, Clarke County, Mississippi. Stratigraphically, the unit falls within the middle Eocene Claiborne group, being roughly equivalent to the upper part of the Lisbon formation of Alabama and the lower part of the Cook Mountain. The marl falls within the Ostrea sellaefonnis zone and the zone of "Ceratobulimina eximia.” The type section consists of 48 feet of sandy marls, with a thin oyster bed near the middle.

The Archusa foraminifera fauna consists of 87 species and varieties, belonging to 49 genera and …

Period Relations For Picard Integrals Defined On A Special Class Of Kaehler Manifolds., Joseph Clement Wilson

LSU Historical Dissertations and Theses

No abstract provided.

Radioactivity Of Sm153 And Eu155, M. R. Lee, Robert Katz

Robert Katz Publications

The radiations from Sm¹⁵³ and Eu¹⁵⁵ have been studied by means of a 180-degree, magnetic-focusing, variable-field beta-ray spectrometer-spectrograph using enriched materials. In the disintegration of 47.0-hr Sm¹⁵³, conversion electrons of three gamma rays of energy, 0.0691, 0.1027, 0.548 Mev, and three beta-ray spectra whose end-point energy and relative intensity were 0.255 Mev, 9 percent; 0.685 Mev, 70 percent; 0.795 Mev, 21 percent, respectively, were observed. A fourth beta-ray spectrum of end-point energy 0.62 Mev and intensity less than 6 percent is postulated. A decay scheme in good agreement with these data and with nuclear shell theory …

The Chemistry Of Digestion, Lester B. Burrus

Masters Theses

No abstract provided.

A Syllabus For A Course In Analytical Projective Geometry, Herbert Richard Warne

University of the Pacific Theses and Dissertations

Projective geometry: a boundless domain of countless fields where reals and imaginaries, finites and infinities, enter on equal terms, where the spirit delights in the artistic balance and symmeric interplay of a kind of conceptual and logical counterpoint, - an enchanted realm where thought is double and flows throughout in parallel stream.

Report Of The State Geologist 1951-1952, Maine Geological Survey

Maine Collection

Report of the State Geologist 1951-1952.

Maine Geological Survey - Maine Development Commission, Augusta, Maine - December, 1953.

Contents: Joseph M. Trefethen -- New England Mineral Resources / Henry Allen -- Progress Report of Limestone Survey, Knox County / Wm. Forsyth -- Mineralogical Variations of the Ellsworth Schist in Blue Hill, Maine / Lawrence A. Wing -- Preliminary Report on Eastern Maine Granites / Kern Jackson -- A Preliminary Report on the Geology of a Portion of the Rumford Quadrangle, Maine / Robert M. Zink -- Certain Aspects of the Ecology of Venus and Mya at Bunganuc and at Morgan …

Nonmetallic Mineral Resources Of Montana (Except Fuels), F. L. Rytlewski

Bachelors Theses and Reports, 1928 - 1970

Essentially, the paper is composed of seven parts, each of which concerns a group of related nonmetallic minerals such as ceramic materials, gemstones, or abra­sives. Following the data pertaining to the minerals of each group are index mars locating the major mineral deposits which are known to date. Production and reserve figures are listed by tables in cases where such information is available.

Host Rocks And Gangue Minerals Associated With Copper Deposits In Plutonic Igneous Rocks, Richard D. Montgomery

Bachelors Theses and Reports, 1928 - 1970

All of the information on the various districts has come directly from published reports. The investigation was suggested by Mr. Forbes Robertson. The geographical extent of the deposits was confined to the western United States. Many of these deposits are of the disseminated porphyry type. A few of the de­posits, such as at Butte, Montana, were of the fissure vein type.

The Indium-Mercury Constitutional Diagram, Bert E. Lake

Bachelors Theses and Reports, 1928 - 1970

Whenever metals differ greatly in electropositivity, intermetallic compounds are likely to form in preference to solid solutions. 21ercury and indium show a considerable difference in electropositivity. This would indicate that intermetallic compounds may play an important role in the con­stitutional diagram for the mercury-indium system.

A Preliminary Study Of Scale Prevention In Sea Water Evaporators By Various Dehydrated Grasses, Basil H. Tannel

Bachelors’ Theses

Although water is relatively abundant throughout the World, it presents a unique and interesting problem when considered in the light or Chemistry with its many and varied applications. One of these problems had its' incipience with the invention of Watt's steam engine. In short, it was the formation of scale in the boiler preventing an efficient heat transfer.

Use Of A Simple Blowing Device To Facilitate Inspection Of Wheat For Internal Infestation, Max Milner, E. P. Farrell, Robert Katz

Robert Katz Publications

Enforcement of sanitary practices in the commercial handling of wheat, particularly with reference to insect infestation, requires a method of inspection of wheat for internal or hidden insect infestation which is reliable, yet rapid enough for routine use. A number of inspection methods have been developed for this purpose, and a review has been published (1) of those proposed up to two years ago. A rigorous evaluation of several of these techniques has been made recently (2).

The rapid inspection method suggested to the grain trade by the Food and Drug Administration (2), based on the results of an extensive …

On The Theory Of Head Waves, Patrick Heelan

Research Resources

When a combined longitudinal and transverse disturbance, diverging from a localized source, strikes a plane boundary between two solid elastic media, several systems of head waves and second order boundary waves are generated, each associated with grazing incidence of one or the other of the reflected or refracted waves. Associated with grazing incidence of P ₁ P₂, the refracted P-wave, is the head wave system comprising P₁P₂P₁ (the "refracted wave" of seismic prospectors), and P₁P₂S₁ (a transverse head wave) in the upper medium, and P₁P_{2 …}

A Survey Of Farm-Game Habitat Restoration Programs In Fifteen States, William H. Marshall

Other Publications in Wildlife Management

For at least twenty years the thinking of wildlife managers has been directed toward the importance of habitat in producing surplus game populations for hunting. The decline or disappearance of game populations - often over considerable areas - following changes in habitat brought about by agricultural, urban, or industrial developments demonstrates clearly the effects of the elimination of desirable habitat. Suitable habitat is basic to the survival of wildlife. Many field observations and experiences, as well as specific data from research, validate this conclusion. Where a harvestable surplus of game cannot be maintained because of changes made by man in …

An Annotated List Of The Orthoptera Of Nebraska Part Ii The Tettigidae And Acrididae, Harold A. Hauke

Bulletin of the University of Nebraska State Museum (1924–2023)

This is the second of a series of papers on the Orthoptera of Nebraska. It is a continuation of the revision of an unpublished thesis on this subject by the author in 1934.

A Study Of Petroleum Resources, Production And Consumption In The United States And Foreign Countries In Their Relation To Our National Welfare And Security, Ann Frazier

Student Scholarship

This document, submitted by Ann Frazier in 1953, presents a comprehensive study of petroleum resources, production, and consumption within the United States and foreign countries, specifically examining their relationship to national welfare and security. The research highlights that while the United States was the world's leading consumer and producer at the time, accounting for over half of global oil production and roughly sixty percent of consumption, its domestic reserves were a waning asset that could not be renewed. The author challenges the alarmist view of imminent exhaustion by distinguishing between proved reserves and total resources, noting that vast quantities of …

Taxation And Other Factors Affecting Private Forestry In Connecticut, Eugene V. Zumwalt

Yale School of the Environment Bulletin Series

No abstract provided.

Apparatus For The Measurement Of Atmospheric Attenuation Of Light, John E. Lyon, Robert D. Woosley

Journal of the Arkansas Academy of Science

No abstract provided.

The Reaction Of Diphenylketenephenylimine And Phenyl-Lithium. Part I. The Bromo-2-Nitro-Benzoic Acids. Part Ii., Tillman Rupert Pullig

LSU Historical Dissertations and Theses

No abstract provided.