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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.

Preparation Of The Phenyl Urethans Of Saturated Aliphatic Liquid Alcohols And A Comparison Of Their Properties With Those Reported In The Literature, Mary Ann Mesoloras

Bachelors’ Theses

An investigation of the phenyl urethans of saturated, aliphatic, liquid alcohols disclosed that there was a great discrepancy in the literature with regard to the melting points of these compounds. It was also found that the preparations of the phenyl urethans were either vague or specific for a few selected alcohols.

The purpose of this thesis was to prepare these derivatives in the laboratory in order to compare the melting points found to those in the literature.

A Study Of The Differential Seperation Of Galena And Sphalerite, Wilfred E. Nagel

Bachelors Theses and Reports, 1928 - 1970

The smelting of complex lead ores is a difficult operation, especially when they contain considerable amounts of iron and zinc. When these ores are smelted, all of the zinc, which is valuable and well worth recovering, goes into the slag. With the advent of the flotation processes, and the ability of these processes to concentrate the lead and zinc minerals into separate products, the smelting of complex lead ores was to a great extent simplified.

A Study Of Atmospheric Ozone Near The Surface Of The Earth, Irby Gerald Bowen

Physics & Astronomy ETDs

It is the primary purpose of this thesis to describe the method used for measuring ozone at the earth’s surface. There is also a report on a brief series of surface ozone measurements. An attempt is made at a preliminary explanation on the basis of meteorological conditions of the diurnal variations which were found.

The Possibility Of Using Gelatin As A Substrate In Determining The Effect Of Ph On The Activity Of Hyaluronidase, Robert P. O'Driscoll

Bachelors’ Theses

The aim of this research is as follows:

1. To determine the feasibility of using gelatin as a substrate for hyaluronidase.
2. To determine the optimum pH for the enzyme acting upon a gelatin substrate.
3. To determine qualitatively and quantitatively if reducing sugars are present in the substrate after action by the enzyme.

The work on hyaluronidase is relatively new. However it is the most extensively studies mucolytic enzyme.

The Effect Of Certain Reagents On The Consolute Temperature Of The Phenol And Water System, Donna Louise Bleck

Bachelors’ Theses

The phenol water system was one of the first of a number of partially miscible liquid systems to be investigated. The mutual solubility has been determined for the pure system at various temperatures and pressures by many investigators.

Particularly interesting is the effect of the addition of a third substance on the mutual solubility of this system.

It is, the purpose of this work to determine the effect of certain previously untried substances on the mutual solubility of phenol and water by investigation of the critical solution temperature before and after their addition. The compounds used have been selected on …

Study Of Ether Soluble Factor From Urine Capable Of Reducing The Viscosity Of Gelatin, Lawrence H. Docta

Bachelors’ Theses

Leonard Driss reported that urine contained an ether soluble factor capable of reducing the viscosity of a gelatin solution.

This thesis intends to further investigate-this point · and to determine the nature of the viscosity reducing factor. Also, to further investigate the phenomena reported by Driss that male urines obtained soon after emission had a greater amount of this viscosity reducing factor than normal urine.

A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana

Bachelors Theses and Reports, 1928 - 1970

The factors that influence the choice of a method for treat­ment of an ore comprise the technical and economic limitations and advantages, derived in detail and balanced according to the exigencies of the particular situation.

Construction And Operation Of A Laboaratory Size Thum Cell, Raymond Dugdale

Bachelors Theses and Reports, 1928 - 1970

Electrolytic silver refining was not perfected until the end of the nineteenth century. During the process of development, two systems of silver refining have come into prominence: the Moebius and the Thum types.

The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer

Bachelors Theses and Reports, 1928 - 1970

The electrolytic refining process, while usually considered an auxiliary process used in conjunction with pyrometallurgical extraction, deserves a special niche in the complex metallurgy of copper. The development of electrolytic copper refining, for example, is largely responsible for the prominence of the electrical industry. Conversely, it could be stated that the electrical industry played an important part in the development of the copper industry.

Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster

Bachelors Theses and Reports, 1928 - 1970

In the modern aspect of powder metallurgy, the first use of a sintering process was in making filaments for incandescent electric lamps.In the short while from the day of Edison to the pres­ent, the science of working with metal powders has advanced by leaps and bounds.

An Investigation Of The Dissociation Of Certain Cyclohexane Derivatives Of Aliphatic Acids, Jack Norman Finch

Master's Theses or Doctor of Nursing Practice

For years it has been known that certain cyclic derivatives of aliphatic acids show hormone activity as growth regulators for some plants, and popular acceptance and application of the regulators has been remarkably rapid. Two commercially available growth regulating substances are indoleacetic acid and phenylacetic acid. Others also include indolebutyric acid and naphthaleneacetic acids (13). There are also certain phenoxy derivatives of acetic acid such as 2,4-dichlorophenoxy acetic acid (commonly called 2,4 D), which have specific destructive effects to growing plants. Many derivatives of phenoxyacetic acid have been prepared, their physical properties determined, and an attempt made to correlate molecular …

The Psilomelane Mineral Of The Butte District, Montana, Logan E. Davis

Bachelors Theses and Reports, 1928 - 1970

During the last few years a great deal of research has been done in connection with the black manganese oxide minerals. This is especially true of the so called mineral psilomelane. It has been proven without a doubt that the name psilomelane has been used in the past to include a great variety of similar black manganese oxide minerals. By the use of X-ray equipment these minerals have been definitely identified.

The Electrolytic Deposition Of Uranium From Aqeous Solution Containing Various Percentages Of Organic Reducing Agents, Joseph J. Leben

Bachelors’ Theses

Until recently uranium was not a much sought after metal. It had few uses, and it was considered merely as a by-product of radium production. The Second World War and the advent of atomic energy altered the uranium picture completely, so that uranium is now more sought after than gold and other precious metals.

With this demand for uranium there came also a need for a more simple method of isolating the metal. The following work is an attempt at solving this need for a simple and cheap method of producing uranium

Qualitative Reactions Of Chlorine On Titaniferous Slags At Elevated Temperatures Without The Use Of Catalysts, Richard K. Brehm

Bachelors’ Theses

For the past twenty-five centuries man's mastery of nature has been based largely on his ability to produce and work iron into implements, tools, and machines. This has been due to the relatively simple task of converting abundant iron ores to metallic iron. No other common metal has the durability of iron. Aluminum has sometimes been called the second most important structural metal, but its extreme softness, even in its alloys, and low melting point have barred it from heavy duty applications. Pound for pound it is stronger than iron, but its bulk is a disadvantage.

Regardless of its durability …

The Sixty-First Session Of The Iowa Academy Of Science, April 15 And 16, 1949, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

An Analytic Study Of Eight-Grade Pupil Performance As Revealed Through The Stanford Achievement Test In Arithmetic, Dominic J. Brungardt

Master's Theses or Doctor of Nursing Practice

The immediate purpose of the study were: (a) to determine how closely the grade equivalents of two-hundred and sixty pupils follow the normal curve ; (b) to plot the results of the one-step problems on a graph with an analytic explanation of the graph ; (c) to place the results of the two-step problems on a graph with an analytic explanation of the graph; to determine what types of error were most prevalent; to discover apparent causes of error ; (d) to make suggestions helpful to teachers for improving pupil achievement.

The Determination Of Hydrogen Numbers Of Various Olefins And Unsaturated Fatty Acids Using A Semi-Micro Hydrogenation Apparatus And To Compare These Numbers To Their Iodine Numbers, Francis J. Romeo

Bachelors’ Theses

Many important industrial applications for fatty acids and their derivatives are based on the ability of the unsaturated members of a series to combine with other molecules through the reactivity of their double bonds.

Investigators for quite some time have sought means and methods for determining the number and the position of these double bonds and correlating the results as a means of identification for the unsaturation in fats and oils. Iodine addition to the double bond is employed generally in analytical work as a measure of unsaturation and as a means of separating acids of varying degrees of unsaturation. …

Report Of The State Geologist 1947-1948, Maine Geological Survey

Maine Collection

Report of the State Geologist 1947-1948.

Maine Geological Survey - Maine Development Commission, Augusta, Maine - March 1949.

Contents: Activity of the Maine Geological Survey, 1947-48 / Joseph M. Trefethen -- Review of the Aroostook County Manganese Deposits / Joseph M. Trefethen -- Notes on Ground Water Conditions in Maine / Joseph M. Trefethen -- The Desert of Maine / Henry Allen and Elbert Pratt -- Reconnaissance Surveys of Limestones in Franklin County, Maine / Lawrence Wing and Arthur Dawson -- Preliminary Report on Asbestos and Associated Rocks of Northwestern Maine / Lawrence Goldthwait -- Clay Survey 1948 / Earl …

Development Of The Potential Weber Basin Project, Utah: Bonneville Basin, United States Department Of The Interior

Elusive Documents

No abstract provided.

Electrolyte Equilibria In Blood, Edward J. Fitzsimons

Dissertations

No abstract provided.

Studies Of Some Reactions Of Quinoxaline, 2-Methyl-, And 2,3-Dimethylquinoxaline, Delos Edward Bown

Theses and Dissertations

Although many compounds have been prepared which contain the heterocyclic nucleus known as the quinoxaline nucleus, very little fundamental experimentation has been reported by way of expanding the chemistry of quinoxaline beyond the basic condensation reaction and its valuable use as a means of characterization, for example, the reaction of vicinal diketones with o-phenylenediamine. Also, no know effort has been made to assemble the chemistry of the quinoxalines into one paper for ready reference. Additional interest is concerned with the chemotherapeutic value of basically substituted quinoxalines^1; however, this aspect of the problem will not be discussed. The chemistry of quinoxaline …

Advertising Brochure: Oliver Cletrac A, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 413 Oliver Standard 66, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 425 Oliver Row-Crop 77 Hc, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 435 Oliver Dg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 429: John Deere Ar, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere AR

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 406: John Deere R Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere R Diesel

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 423: John Deere Mt, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere MT

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 …