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Test 438: Minneapolis-Moline Z, Nebraska Tractor Test Lab

Nebraska Tractor Tests

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An Isothermal Study Of An S.A.E. 6150 Steel, Tom Liss, C. Arentzen

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to set forth the method followed, the laboratory procedure practiced, the results obtained, the conclu­sions drawn, and the recommendations proposed as a consequence of a metallographic study of the isothermal transformation of an S.A.E. 6150 steel.

Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas

Bachelors Theses and Reports, 1928 - 1970

Since the purpose of this thesis is primarily to present an improved mechanical method for plotting isothermal transformations by means of differential mag­netic permeability between untransformed austenite and its ultimate transformation product.

A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown

Bachelors Theses and Reports, 1928 - 1970

The objective of this thesis was to affect an effic­ient and economical recovery of corundum. The corundum oc­curs as a crude ore admixed with quartz and other diluents. Yet, this material is a potential Montana resource of a val­uable non-metallic mineral. In view of the strategic import­ance and the relatively small production of this mineral in the United States, it seems advisable at this time in world affairs to investigate every possible source of this mineral.

The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement

Bachelors Theses and Reports, 1928 - 1970

Unique feldspar porphyries, syenitic in appearance, and granitic in composition, form an unusually thick sill intrud­ing pre-Cambrian Belt graywacke about eight miles south of Whitehall in southwestern Montana. Commercial deposits of gold and silver ores occur nearby, and may possibly be genet­ically related to the porphyry, although direct association is not evident. The geologic age is believed to be late Cretaceous or early Tertiary, and the sill may be related to the Tobacco Root batholith.

A Study Of Some Pre-Cambrian Schists From Yankee Jim Canyon, Park County, Montana, Charles K. Presley

Bachelors Theses and Reports, 1928 - 1970

One of the most highly deformed metamorphic rock series in Montana is exposed fifteen miles north of Yellowstone Park, Wyoming in the great gorge known as Yankee Jim Canyon, which was formed by Yellowstone River at that point. These metamorphics are Pre-Cambrian in age, and are almost certainly sedimentary in origin, although the involved and intricate folding which they have undergone has long since obliterated any superficial traces of that origin.

The Lilly Mine Of Powell County, Montana, Wilbur Aikin

Bachelors Theses and Reports, 1928 - 1970

For many years the Elliston District, of Powell County has been a minor producer of gold, lead, zinc, and silver. Although never among the largest producing districts of the state, it has with the exception of the war years supplied a notable tonnage of ore to the neighboring mills ever since the first placer and lode claims were located there during the late eighteen hundreds.

Geology Of Smoke Hollow Area 8 Miles Southeast Of Deerlodge, Powell County, Montana, Floyd C. Bossard

Bachelors Theses and Reports, 1928 - 1970

This investigation was undertaken primarily as a problem in geologic mapping. The stratigraphy was studied as to the character, age, and sequence of the geologic formations that are exposed. The conclusions were based principally on the field relationships and lithology because no fossils were found.

Structure Of Southwestern Montana, Donald W. Levandowski

Bachelors Theses and Reports, 1928 - 1970

Intrusions of granitic rocks on a large scale are commonly found in the central part of folded mountain systems. Igneous rocks, intrusive and extrusive, are widespread in the mountains of southwestern Montana. An examination of the structural pattern of this area indicates that the fold trends form a radial pattern. How and why this pattern formed and its relation to the igneous activity in the area have not yet been discussed in the literature.

Basic Sills In Cottonwoood Creek Canyon, Jefferson County, Montana, Dale F. Kittel

Bachelors Theses and Reports, 1928 - 1970

A stratigraphic section of about 2600 feet of upper Beltian to lower Devonian formations exposed in Cottonwood Creek Canyon 11 miles east of Whitehall, Montana, contains about 20 igneous sills. These sills are from 5 to 20 feet thick, and grade from granogabbro to quartz basalt, except for one sill which is 165 feet thick, and is composed of granogabbro and red syenite. The whole sedimentary series is isoclinally folded, and the sills follow the bedding planes closely with localized crosscutting through the beds.

Was Assimilation Important In The Formation Of The Boulder Batholith?, Richard Marvin

Bachelors Theses and Reports, 1928 - 1970

Examination of a rock suite from the northern end of the Boulder batholith reveals that four of the eight criteria for assimilation as given by Grout are present. Thus, in the opinion of the writer, there is evidence and trends to signify assimilation, but no indication of the importance that it played in the formation of the Boulder batholith.

The Bighorn Mountains, The Little Rocky Mountains And The Bowdoin Dome Uplifts, E. J. O'Connell

Bachelors Theses and Reports, 1928 - 1970

The purpose of this paper is to secure an actual figure describing the amount of uplift in the Bighorn Mountains, the Little Rocky Mountains and the Bowdoin Dome. To the writer’s knowledge, the amount of uplift in the areas mentioned has not been determined before. Such a figure could be useful in structural studies of Montana and Wyoming, because the amount of uplift is a fair measure of the intensity of orogenic forces; also, the amount of uplift is a prerequisite to the determination of the amount of erosion.

The Use Of Ethyl 4,4-Dimethyl-1-Isopropyl-2-Imidazolinyl-2-Acetate In The Synthesis Of Some 2-Imidazolines, Jacob Shapira

Chemistry and Chemical Biology ETDs

The first recorded synthesis of a 2-imidazoline was reported in 1882 by Radziszewski who obtained what he thought to be 2,4,5-triphenyl-3-imidazoline by warming an alcoholic solution of benzoin, ammonia and benzaldehyde. ‘Amarine’, the common name for this compound, has been shown to be 2,4,5-triphenyl-2-imidazoline.

A Test Of Richardson's Equation, Gerald J. Pyne

Bachelors’ Theses

The purpose of this work is the verification of the above relationship between saturated emission current and temperature, and especially, the evaluation of the current-temperature relating constants, A and theta.

Preparation And Interesterification Of Triacetin, Billy D. Fairman

Bachelors’ Theses

This project was undertaken because of my interest in organic chemistry, especially in the field of esters. This interest was stimulated through the characterizing of an unknown ester and its reactions as studied in a previous class. At this particular time, my interest has been centered on the interchange of radicals between esters and other compounds.

It is hoped that the results obtained in this thesis will help others in their study of the interesterification of esters, especially of glyceryl triacetate - in this case, with a view toward its application the drying oil industry as a means of preparing …

X-Ray Diffraction Analysis Of Powdered Samples, William T. Gahan

Bachelors’ Theses

In the Physics laboratories of Marquette University there are two North American Phillips X-Ray Powder Diffraction Cameras. The purpose of this thesis is to place these cameras into operating order, and to check the results obtained from them. Special Telechron motors were fastened to the frame of the cameras to rotate the samples one revolution per minute, adaptable ways were machined to rest the cameras on.

Fluorescent Effects Produced By Rare Earth Elements, William J. Stekiel

Bachelors’ Theses

The subject matter of this thesis had its origin in a phenomena observed in the laboratory during a crystal analysis experiment by means of X-ray diffraction. While using crystals composed mainly of Neodynium and related rare earths as specimens, it was found that an unaccountable darkening of the film occurred in the region near the sample. This excessive darkening (over and above the normal amount produced by incident X-rays) was attributed to some type of back scattering of radiant energy produced by the crystalline elements composing the sample. Thus, the problem of this thesis was to carry out some simple …

Microradiography With Biological Specimens, Arthur D. Wellman

Bachelors’ Theses

Microradiography is a technique in which X-rays are directed through a very thin specimen onto a fine-grained photographic film and the image examined under magnification. It has been used chiefly as a supplementary tool in industrial analysis of metal structures, and even in this field has attained prominence only within the past decade. Its usefulness is limited to fine structures (except where minute flaws or impurities are to be examined in a material), and its success is limited by the degree of clarity in the radiograph to be magnified.

Calibration Of An X-Ray Unit As To Effective Wave-Lengths By Comparing Absorption Coefficients, Jerome James Woyci

Bachelors’ Theses

The purpose of this paper is to determine by the mass absorption coefficients of various substances, namely, aluminum, copper and iron, the effective wave-length of an X-ray beam which passes through particular thicknesses of the above materials. Since an X-ray tube does not emit a monochromatic wavelength but emits heterogeneous wave-lengths, we had to use a comparative method in order to obtain the desired results. It happens that the mass coefficient of absorption of carbon does not vary appreciably with an increase or decrease in wavelength, hence, we can use carbon as our standard or material to which we can …

Additional Equations For The Wigner_Seitz Model Of Solids, Alex Sharley Keene

Bachelors’ Theses

This report consists of an extension of the Wigner-Seitz equations to particular cases and boundary conditions. These equations are tools whereby energy bands and wave functions for a face centered lattice can be determined.

Design Construction And Use Of A Device To Demonstrate Motion In Two Dimensions, Robert R. Karnopp

Bachelors’ Theses

The production of visual materials is an interesting and challenging field for many teachers. This is a type of activity which has possibilities for teacher improvement, and which, at the same time, involves the production of instructional materials that are timely.

The Possibility Of Mercuric Sulfide Having A Yellow Color, John Joseph Savignac

Bachelors’ Theses

The author chose this particular problem because it is directly connected with a subject which he had previously studied and found very interesting. It was also of interest to this author because the answer to the immediate problem must be definite and without qualification, thus leaving no room for ambiguity.

An Investigation Of The Charge Acquired By A Metal Plate When Irradiated By X-Rays, Bernard Keith Betz

Bachelors’ Theses

The Photo-electric effect upon metals irradiated by X-rays can, under certain circumstances be completely concealed by some other phenomenon, unless certain precautions are made. It is the purpose of this paper to discuss the properties of this phenomenon.

Electrometric Microdetermination Of Water In Tungsten And Molybdenum Metal Powders By The Karl Fischer Reagent, Helen C. Efinger

Bachelors’ Theses

The problem of the determination of the moisture content or metal powders has been suggested by the Fansteel Metallur­gical Corporation, where I was formerly employed, as one which might prove of interest to them. I have been particularly interested in a topic of this nature since my only laboratory experience has been in metallurgical chemistry.

In this work I intend to make a comparison and evaluation of various methods of determining the moisture content of tungsten and molybdenum powders in order to show which would be the most applicable. Most of the common methods for determining the amount of moisture …

The Construction And Testing Of An Ionization Chamber Designed For Use In Measuring The Roentgen Intensity Of An X-Ray Source, William F. Lindsay

Bachelors’ Theses

It was the author’s assignment for an undergraduate thesis, to construct an ionization chamber, which, when connected to a Dershem electrometer, could be used to determine the intensity of an X-ray source producing ionization within the chamber. It was desired that the chamber conform to the physical dimensions of the ionization intensity unit, commonly called the “Roentgen".

Solidified Alcohols, Mary Kay Enright

Bachelors’ Theses

The relatively new field of science, colloid chemistry, has risen to become an important addition to man's knowledge of the behavior of matter in the natural world and in the laboratory. Although it can no longer be viewed as a new science, it is still new enough to contain unexplored fields and to intrigue the investigator.

The study of gel formation has been received with interest by chemists of the nineteenth and twentieth centuries. This phenomenon of sudden gel formation instead of the expected crystalline precipitate while extracting with alcohol was encountered often in experimental work.

The inquisitive mind would …

An Investigation Of Haury And Ballard's Method Of Production Of Diketones As Applied To Diketones With Aromatic Nuclei, Eugene Chester Dziadulewicz

Bachelors’ Theses

This investigation was undertaken to determine the feasibility of preparing aromatic diketones by the new and novel method proposed by Haury and Ballard.

The Monadnock Volume 24, Number 2, May 1950, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 24, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

Geology Of The Golden Area, Santa Fe County, New Mexico, W. L. Emerick

Earth and Planetary Sciences ETDs

This report represents a detailed study of the geology of a small area in the vicinity of Golden, Santa Fe County, New Mexico. The area is one of low hills, dissected by numerous small arroyos, lying between the Ortiz Mountains on the north and the San Pedro Mountains on the south. To the west the area merges into the Hagan Coal Basin, and to the east the low pass between the mountains descends into the headwaters of Galisteo Creek and into the Estanica Valley.

An Electrochemical Determination Of The Free Energy Of Formation And Solubility Product Constant Of Silver And Mercury Sulfides, Earl Lloyd Gray

Theses and Dissertations

Because present data on free energy of formation and solubility product constants of the metal sulfides are both inconsistent and based on very old experimental data, a new study using modern techniques is amply justified. Because metal sulfide precipitates are often colloidal and becasue the solubility of these sulfides is so low, ordinary physical and analytical methods are not applicable to a direct determination fo the solubility product constant. Therefore, a more reliable thermodynamic approach was undertaken in this study. The standard free energy of formation of silver and mercury sulfide was determined from electromotive force measurements of suitable galvanic …