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Separation Of The Inorganic Cations Of Groups Ii And Ila By Means Of Paper Chromatography, Donald P. Schuelter

Bachelors’ Theses

The field of inorganic paper chromatography is in its infancy at the present time. Numerous papers have been published describing various methods for separation and hypothesis for the mechanism of the separations. Since the number of variables involved in chromatographic separations is so large it is rather difficult to establish any concrete principles. Many phases of the separations and their effects have been investigated but only too often they yield conflicting data. Up to the present time the majority of authors have confined their studies to a particular solvent and grade of filter paper.

Differential Thermal Analysis Of Some Carbonate Minerals, Paul L. Vandeveer

Bachelors Theses and Reports, 1928 - 1970

Thermal analysis is a relatively new method of determining the general composition of certain mineral substances. As is demonstrated by much of the literature previously written, clays and carbonates are especially adaptable to this method. The full importance of the method is not as yet realized, but it is rapidly approaching that point.

The Influence Of Copper Upon The Age Hardening Properties Of Steel, Andre Rey

Bachelors Theses and Reports, 1928 - 1970

The virtues of alloy steels have been widely publi­cized in both technical literature and everyday adver­tising. Nearly everyone possessing a slight knowledge of metallurgy knows the beneficial effects of chromium in the manufacture of stainless steels, or the importance of nickel, molybdenum, vanadium, and other common elements used to alloy steels.

Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson

Bachelors Theses and Reports, 1928 - 1970

The polarograph has been applied to a large number of chemical and metallurgical analyses, and is especially applicable to solution control analysis and to the deter­mination of minute quantities of ions in the presence of large amounts of other ions.

A Listing Of Montana Invertebrate Fossils And A Bibliography Of Montana Paleontology, Robert G. Ingersoll

Bachelors Theses and Reports, 1928 - 1970

The oldest system in which identifiable invertebrate fossils have been found is the Cambrian. The basal Cambrian formation found in Montana is the Flathead sandstone and quartzite of Middle Cambrian age. No fossils have been reported from this formation. Above the Flathead is the Wolsey formation composed of green fissile shale with sandy and limy members. This fossiliferous member of the Middle Cambrian is known in Northwestern Montana as Gordon, and in the Philipsburg quadrangle as the Silver Hill formation.

The Monadnock Volume 25, Number 2, May 1951, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 25, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

Preparation Of 3-Methylphenanthrene, Yvonne C. Bestler

Bachelors’ Theses

The year 1929 witnessed the opening expansion of the previously small list of naturally occurring phenanthrene compounds. The new groups of substances included were as strikingly different in their actions on animal organisms as they were similar in structure.

The Freezing Point Of Water In Puddled And Unpuddled Soils At Different Soil Moisture Tension Values, Robert B. Campbell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A technique that will adequately describe the physical condition of water in the soil has long been desired by scientists. The method should include the effect of soluble materials on the osmotic pressure of the soil solution, and also the effect of surface force action between the soil and soil water.

Parker (8) demonstrated that the freezing point was reduced in the presence of finely divided material. This suggested the possibility of using the cryoscopic procedure to measure the physical condition of water soil. More recently, the introduction of Thermistors for accurate temperature measurement have made it desirable to investigate …

Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study of the Utah sculpin in Logan River was based on 801 specimens collected during 1949 to March 1951. Numbers of fish examined for various catagories of the study wares length-frequency, 495; aging by vertebrae, 407; length-weight relationship, 601; and food habits, 275.

Fish were collected by use of an electric shocking machine generating 600 watts and 220 volts. Numbers of fish occurred as high as 150 per tenth mile of stream. Preferred habitats occurred in areas of coarse gravel and small rocks.

Vertebrae dissected from the fish were used in age determination. Length-frequency proved to be a general …

Pellet Seeding On Sagebrush Range, Gordon E. Gatherum

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Seeding deteriorated range lands efficiently and economically has become one of the most promising means of improving the agricultural economy of the western range states. By providing the most rapid means of increasing the quantity and improving the quality of forage for livestock, and aiding in the prevention of soil erosion, artificial seeding contributes directly to the stability of agriculture.

Although many successful methods of artificial revegetation have been developed by experience and through research, there is still a great need for refinement in techniques to insure better overall success and greater economy of operation. Improper methods often result in …

The Sixty-Third Session Of The Iowa Academy Of Science And The Eighteenth Convention Of The Junior Academy Of Science Of Iowa, April 20 And 21, 1951, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Test 455: Massey-Harris Model 55, 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 …

A Demonstration Of Various Procedures Used To Interest And Help Pupils To Understand Physics, O. M. Bjeldanes

Journal of the Minnesota Academy of Science

No abstract provided.

Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.

Bachelors Theses and Reports, 1928 - 1970

The mines at San Jose which are within the Wadley unit are the largest antimony mines in Mexico. These mines produce more than half of the antimony produced by the company from its mining operations. Since the time of the author's connection with the company, a number of changes have been made in planning of development work, handling of labor, methods of mine development, cost improvement, and other problems inherent in the successful guidance of an operation.

Cyclic Derivatives Of Tris (Hydroxymethyl) Aminomethane : Monourethans And Ureas, Julian Lee Rush Jr.

Master's Theses

The purpose of the work reported in this thesis was to study the chemistry of tris(hydroxymethyl)aminomethane (A), H2Nc(cH20H) 3, a beta-hydroxy amine.

The Upland Game And Migratory Waterfowl Harvest, Russell W. Stuart

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

This report presents the results of data gathered by questionnaire from a random group of North Dakota license holders during the 1951 season and a report from 130 non-resident license holders who voluntarily filled out and returned a card attached to the non-resident license. The two sets of data will be treated separately in the report.

Attempted Separation Of Similar Ionic Species By Means Of Paper Chromatography, Alexander Beresniewicz

Bachelors’ Theses

Chromatosraphy is a comparatively new analytical method which deals mainly with the separation of similar organic compounds. Until now, only a few papers have been published on inorganic paper chromatography. Up to the present time no investigator has made a serious attempt to organize and systematize the large amount of available information in order to clarify the underlying principles.

The author has attempted to investigate the influence of the charge of similar inorganic ions on their separation. In the case of adsorption chromatography, it may generally be stated that ions with higher valence are more readily adsorbed. Such a statement …

Square Wave Modulation, Richard Henry Duncan

Masters Theses

"Modulation of a radio frequency carrier can be defined as the variation of some wave parameter such as amplitude, frequency, or phase, in accordance with intelligence to be transmitted. An unmodulated carrier is simply a continuous sine wave and contains no information other than the fact that the transmitter has been turned on. The spectrum of an unmodulated signal consists of a single frequency. Any type of modulation is characterized by the appearance of additional frequencies, known as sidebands. One of the fundamental problems in radio engineering is to reduce the number of sidebands to a minimum and still adequately …

The Completion, Adjustment, And Operation Of A Grazing Incidence Vacuum Ultraviolet Spectrograph, William Clinton Johnson-Chamberlain

Masters Theses

"Most gases, and particularly oxygen and nitrogen, are nearly opaque to radiation in the region from about 1800 Å downward to about 2 Å and hence, for spectroscopic work in this region, the removal of these gases is mandatory. Popular usage generally refers to the range mentioned above as the vacuum ultraviolet. That there remains much experimental work to be done in the vacuum ultraviolet has been pointed out by Boyce in his exhaustive survey of vacuum ultraviolet spectroscopy. In order to fill in some of these gaps, Mr. L. H. Chapin, in the, spring of 1950, undertook the construction …

A Lead Sulfide Near Infrared Detection System, William V. Cummings Jr.

Masters Theses

"The infrared region of the spectrum is conveniently divided into the near infrared, which extends from the red end of the visible to about 25 microns, and the far infrared, which continues to an ill-defined division point of approximately 1,000 microns. The near infrared region has been further subdivided on the basis of instrumental techniques so that the particular portion of the spectrum consisting of radiations of wave length up to 3 microns has become known as the photoelectric infrared.

Several types of detection instruments have been designed and perfected for work in the photoelectric region, but new methods and …

An Analysis Of The Oil Of Echinocystis Fabacea Seeds, Francis Warren Sayre

University of the Pacific Theses and Dissertations

Echinocystis fabaceae, commonly called “Man Root” because of the peculiar shape of the root, not unlike that of a man, finds abundant occurrence in the central valleys of California. This plant, a member of the wild cucumber family, is of particular interest because it is an oilseed plant. The variety agrestis is especially common around Stockton. Other varieties are found throughout the Sacramento and San Joaquin Valleys and in the Coast Range Mountains.

Oils have played an important part throughout history and are continuing to do so in our present economy. An investigation of the oils of Echinocystis fabaceae seeds …

Glacial Geology Of Wabash County, Indiana, William J. Wayne, William D. Thornbury

Department of Earth and Atmospheric Sciences: Faculty Publications

Most of the topographic features of Wabash County are of glacial origin or are glacial deposits eroded by postglacial streams. Shales, limestones, and dolomites, all Silurian, are exposed only along some of the deeper valleys. Four major rivers and six smaller streams in Wabash County flow in glacial sluiceways. Only the Eel and Wabash sluiceways carried large quantities of melt-water. The Eel River valley train occupies an interlobate position, and the Wabash Valley bears evidence of its roles as a sluiceway and as an outlet for glacial Lake Maumee in late Cary time. Three topographic areas comprise the upland part …

Some Applications Of Chromatography To Specific Problems., Marvin Lee Owens

LSU Historical Dissertations and Theses

No abstract provided.

Geology Of Ouachita Parish, Louisiana., Kia Kang Wang

LSU Historical Dissertations and Theses

No abstract provided.

The Polarization Of Zodiacal Light, Maynard Cowan

Physics & Astronomy ETDs

It was the purpose of this study, (1) to measure the polarization of zodiacal light, (2) to investigate the orientation of the plane of polarization, and (3) to deduce from results obtained information concerning the origin of zodiacal light.

Radiolaria From The Porters Creek Formation (Paleocene, Midway Group) Of Stoddard County, Missouri, Eldridge Sellers Middour

Masters Theses

"Fossil Radiolaria are described and figured from the Porters Creek formation (Paleocene) of Ardeola, Stoddard County Missouri. This is the first detailed treatment of fossil radiolarians from the Gulf Coast area. Thirty-one species are described and figured, all believed to be new, belonging to twenty-four genera. Fifteen families are represented, ten referable to the Legion Spumellaria, five to the Legion Nassellaria. Stratigraphic descriptions or the section at Ardeola is presented, and a discussion of laboratory techniques is included"--Abstract, page 3.

A Correlation Function For Liquid Argon, Walter Graham

Masters Theses

"X-ray scattering patterns have given considerable information concerning atomic distributions in matter, both crystalline and amorphous. Work on the diffraction of x-rays by crystals was begun in 1912 by Friedrich, Knipping, and Laue, and much valuable information concerning the arrangement of atoms in crystals has been supplied by this method. Diffraction of x-rays by gases was studied as early as 1911, and work in this field has given information concerning the arrangement of atoms in molecules and electron distribution in atoms. Work on the diffraction of x-rays by liquids was begun by Friedrich who obtained diffraction patterns of Canada Balsam, …

Intermediate Compounds In The Synthesis Of Lignin, Paul Spencer Gakle

University of the Pacific Theses and Dissertations

The synthesis of a keto-aldehyde from salicylaldehyde and benzaldehyde was attempted. The first step was to protect the carbonyl with a non-reactive group.

The bisulfite addition product and the 2,4-dinitrophenylhydrazone of salicylaldehyde were prepared. The methyl acetal, the sodium bisulfite addition product, and the 2,4-dinitrophenylhydrazone of benzaldehyde were also prepared.

The bisulfite addition of both aldehydes was found to be too unstable in the presence of aldehyde was recovered in each case. The methyl acetyl chloride also decomposed. This necessitated finding a more stable group to protect the aldehyde.

The 2,4-dinitrophenylhydrazone was unaffected by treatment with anhydrous aluminum chloride in …

Geology Of The North Half Of The Meramec Spring Quadrangle, Missouri, Harold Edward Mueller

Masters Theses

"The Ozark region is visited by many persons each year, and one of its popular tourist attractions is Meramec Spring. In recent years, with the advent of better roads and swifter means of transportation, visitors are coming to this beautiful spring in increasing numbers. For those who are geologists, this work will serve as a handy guide; for those who are laymen, this work may give a better understanding of the geologic events which have made this part of the Ozarks a place of scenic beauty. Mapping of the Meramec Spring Quadrangle will complete a program of geologic mapping of …

Torsional Modulus Of Rupture Of Thick-Walled Magnesium Alloy Fs-1 Tubing, Delbert R. Cox

Masters Theses

"Magnesium is taking a more prominent position in the structure of aircraft, and because of this, it is important that the mechanical properties of the material be understood more fully. In the high speeds of today, the tendency is toward the use of thick-walled tubing instead of the thin-walled tubing with stiffening structures. For this reason, it is of interest to note the characteristics of thick-walled tubing when subjected to torsion.

This thesis was first suggested by a circular letter on proposed thesis titles from the Commanding General, Air Materiel Command, Wright-Patterson Air Force Base, Dayton, Ohio. When interest was …