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Coprecipitation Of The Transuranium Elements With The Rare Earths Coprecipitation Of Americium With Lanthanum Oxalate, John A. Hermann

Chemistry and Chemical Biology ETDs

Coprecipitation is a process whereby a substance soluble by itself is "carried" with an insoluble crystalline precipitate. As used here, coprecipitation applies to the "carrying" of a tracer by a precipitate formed in the presence of the tracer. The phenomenon is important in analytical chemistry¹, in the problem of impurities in precipitates; in radiochemistry^2,3, in the separation of radioactive tracers originally present in very low concentrations; and in general, whenever a solid is separated from its mother liquid by precipitation.

Genetic Study Of Some Pyrrhotite Deposits Of Maine And New Brunswick, Dept. Of Development Of Industry And Commerce

Maine Collection

Genetic Study of Some Pyrrhotite Deposits of Maine and New Brunswick

by Robert S. Houston

Maine Geological Survey - Bulletin 7

Department of Development of Industry and Commerce, Augusta, Maine (January, 1956).

Contents: Abstract / Introduction / Field and Laboratory Studies / Regional Geography / Regional Geology / Pyrrhotite Deposits / Description of Individual Deposits / Literature Cited

East Cache Project: Idaho And Utah, Bureau Of Reclamation; Region 4; United States

Elusive Documents

No abstract provided.

Waxes From Peat Soils Of San Joaquin Delta, Masao Ueda

University of the Pacific Theses and Dissertations

Wax has been extracted from pest formations in Europe and especially in Britain. However, little or no work have been done in the United States.

The increased demand for waxes and the limited supply of domestic origin has made the study of the sources and characteristics of domestic waxes desirable. Extensive work have been done with montan wax, which is similar to peat wax, in the United States.

The object of this research is to establish a suitable process for extraction of wax from pest material, and to determine the chemical and physical nature of the wax. The process may …

The Effects Of Structural Changes On The Formation Of Urea Adducts Of Esters, Gerard Vinton Smith

University of the Pacific Theses and Dissertations

An unexpected discovery in 1940 revealed that urea has the peculiar property to form crystalline adducts with many straight chain organic compounds. Since the discovery, considerable time and money have been spent on the elucidation of this phenomenon, and the field of urea adducts has now advanced to the stage at which many empirical rules have been observed but, unfortunately, no sound theory has been formulated.

The purpose of this research was to determine the effect, if any, of changes in structure upon the amount of urea required to adduct with esters. The change in structure consisted of changing the …

Arretotherium Fricki, A New Miocene Anthracothere From Nebraska, J. R. Macdonald, C. Bertrand Schultz

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

A new species of middle Miocene (early Hemingfordian) anthraco-there, Arretotherium fricki Macdonald and Schultz is described based on a cranium from the upper Marsland deposits of Nebraska. The holotype suggests that this genus was derived from the Oligocene genus Elomeryx Marsh.

Some Remarks About Elementary Divisor Rings, Leonard Gillman, Melvin Henriksen

All HMC Faculty Publications and Research

By a slight modification of Kaplansky's argument, we find that the condition on zero-divisors can be replaced by the hypothesis that S be an Hermite ring (i.e., every matrix over S can be reduced to triangular form). This is an improvement, since, in any case, it is necessary that S be an Hermite ring, while, on the other hand, it is not necessary that all zero-divisors be in the radical. In fact, we show that every regular commutative ring with identity is adequate. However, the condition that S be adequate is not necessary either.

We succeed in obtaining a necessary …

Rings Of Continuous Functions In Which Every Finitely Generated Ideal Is Principal, Leonard Gillman, Melvin Henriksen

All HMC Faculty Publications and Research

The outline of our present paper is as follows. In §1, we collect some preliminary definitions and results. §2 inaugurates the study of F-rings and F-spaces (i.e., those spaces X for which C(X) is an F-ring).

The space of reals is not an F-space; in fact, a metric space is an F-space if and only if it is discrete. On the other hand, if X is any locally compact, σ-compact space (e.g., the reals), then βX-X is an F-space. Examples of necessary and sufficient conditions for an arbitrary completely regular space to be an F-space are:

(i) for every f …

Annual Installation Of Irrigation Wells In Nebraska Through 1985, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Stapes Ankylosis And Its Mobilization, Emery I. Pick

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included - Preface Included Here]

Otosclerosis is a frequent affliction resulting in progressive hearing loss. With the advance of ear surgery during the past 25 years various procedures have been proposed for the correction of this condition. Among their number surgical mobilization of the stapes has assumed considerable importance. In this paper, which is presented as a thesis to fulfill the requirements for the degree of Master of Science, the operation will be discussed on the basis of the literature and the author's own experiences with the procedure.

An Introduction To The Derivative Of A Polynomial, Floyd A. Miller

Masters Theses

No abstract provided.

A Procedure For The Estimation Of Total Radioactivity In Water, Kenneth Vergil Marsh

University of the Pacific Theses and Dissertations

One of the essential duties of the State of California Department of Civil Defense in times of nuclear weapon attack will be radiological monitoring. The workers in this field will operate from a mobile laboratory truck, equipped with radiation counters and meters, but containing only the simplest of chemical equipment. One of their main problems will be the determination of the total amount of radioactive material, especially fallout of fission products, in a water sample. As yet no method of analysis both simple and rapid enough for application to mobile operation has been developed.

It was the purpose of this …

Chelation Of The Transition Metal Ions With A Series Of Polyhodrozyamine Compounds, William Percy Moore

Master's Theses

Chelation was reviewed with emphasis on the work done by contemporary workers.

The following polyhydroxyamine compounds were synthesized, purified and· analyzed:

1,2-bis[tris(hydroxymethyl)methylamino]ethane dihydrochloride

1,3-b1s[tris(hydroxymethyl)methylamino]propane dihydrochloride

1,3-b1s[tris(hydroxymethyl)methylamino]-2-propanone dihydrochloride

1,2,3-tris[tris(hydroxymethyl)methylamino)propane tri­ hydrochloride

The latter two compounds have not been reported in the literature.

Chelates were prepared by reacting the above compounds, and 1-3bis[tris(hydroxymethyl)methylamino]-2-propanol dihydrochloride ("disec") and the "disec" free base, with the ions of the first transition metals. Stability cons­tants were obtained where appreciable coordination occurred before precipitation of the metallic ion took place . A list of the metal ions studied with one or more chelating agents follows: Cu⁺², …

Some Uses Of An Oscilloscope In High School Physics, John Ray Bolte

Dissertations and Theses @ UNI

Use of the cathode ray oscilloscope in the high school physics class has, in many instances, been overlooked by the high school physics teacher as a means of increasing the student's understanding of certain electrical phenomena. In many cases, the teacher may not be well acquainted with the use of an oscilloscope and, very often, the teacher may feel that the cost of such an instrument is beyond the limits of the typical high school science budget.

Gathering Of The Hunting Season Data 1956, Max Hamilton, Phil Agee

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

To obtain information relative to the harvest of pheasants on the three study areas at Harvard, Clay Center and Fairmont.

1956- Spring Pheasant Inventory, Dan Heyl

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Objectives:

To determine pheasant breeding population trends.

Test 574: International 300 Utility Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

This report and any related files are made available to the online through the Lester F. Larsen Tractor Test and Power Museum as resources allow. Established in 1998, this museum is located on the University of Nebraska-Lincoln East Campus. It is and appropriately housed within the walls of the historic 1920 Nebraska Tractor Test Laboratory, where the first tractor test was started on March 31st, 1920. Because the pioneer tests became worldwide standards, this location was designated as a Historic Landmark of Agricultural Engineering by the American Society of Agricultural Engineers in 1980, shortly after testing was moved to a …

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 …

New Methods For The Study Of Fast Electrode Reactions., Talivaldis Berzins

LSU Historical Dissertations and Theses

No abstract provided.

An Investigation Of The Internal Friction Of Manganese-Copper Alloys, Ed. (Edward) Sickafus

Masters Theses

"Internal friction is defined as the ability of a vibrating solid to convert its mechanical energy of vibration into heat, even when completely isolated from its surroundings. (1) The most familiar manifestation of internal friction is the damping of a freely vibrating body, such as a torsional pendulum. Another example would be the increased width of the resonance peak observed when a nonelastic body is forced to vibrate over a spectrum of frequencies.(2) Internal friction manifests itself in numerous ways, and we will here be concerned with the first example cited and the potency of data gained in studying the …

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

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 …

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 …

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.

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 …

Method Of Study Of Regional Seismicity, James E. Case

Journal of the Arkansas Academy of Science

No abstract provided.

Test 598: John Deere 620/630, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere 620/630

TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.

This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.

BELT HORSEPOWER TESTS

TEST …

Test 600: John Deere 420 S All-Fuel Quad-Range, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere 420 S All-Fuel

TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.

This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.

BELT HORSEPOWER …

Ostracoda Of The Silurian Decker And Manlius Limestones In New Jersey And Eastern New York, Frank M. Swartz, Frank C. Whitmore Jr.

United States Geological Survey: Staff Publications

Descriptions and illustrations are given for 44 ostracode species of the Decker, Rondout and Manlius limestones of the William Nearpass quarries and Dalton Nearpass farm in northwestern New Jersey, and at Austin's Glen and Trilobite Mountain in New York. One brachiopod variety is proposed. The ostracode species are distributed through 11 families and 23 genera. Thirty-two species and one variety are new, and there are eight new genera. Holotype or syntype specimens of 13 of Weller's ostracode species have been restudied and are refigured and redescribed. Stratigraphic sections are described to provide details of the ostracode occurrences, and zonal potentialities …

Tannin Content Of English Walnuts : Thesis ..., Joseph G. Natoli

University of the Pacific Theses and Dissertations

Present methods for the production of leather from animal hides still depend from the most part on the use of natural tannin extracts. During the year, 1952, the amount of natural tannin extracts used by the leather industry was 560,452,119 pounds as compared to 35,793,000 pounds of synthetic tanning materials. It is not as yet possible to produce synthetic materials as economically as the natural extracts; the result being that there is still a very great demand for natural tannin extracts. The need for finding new domestic sources of tannins is apparent when the amounts of domestic and imported extracts …