Physical Sciences and Mathematics Commons^™

The Crystallation Of Estrogen-Binding Protein From Candida Albicans, Carl Francis Ackerbauer

Honors Theses

Cells of the type, Pt +, Metallic Salt, Incadescent Electric Lamp, were investigated for a study of the elctrolytic proceses whereby various ions entered and replaced others already in the glass. The medium has a high viscosity even to temperatures of several hundred degrees. The Study was confined to the nature of the changes and a possible quantitative result. Glass conducts electrolytically at all temperatures but more so at high temperatures, the Na + travels toward the cathode while the Sio--, not being a simple ion, and being very sluggish remains practically stationary. If the material, capable of supplying ions …

A Study Of Some Properties Of Silicic Acid Gels, William Joseph Rothemich Jr.

Honors Theses

When a solution of sodium silicate or water glass is mixed with an acid sooner or later a gel is formed. The speed of gelation is known to be dependent upon the concentration of water glass, the excess of acid or alkali present, agitation, temperature, and the kind of acid used. In my work with the setting of the gels these five points were kept as constant as possible.

The Determination Of Hydrogen Ion Concentration By The Electrometric Method, Evelyn Matthews Cook

Chemistry Honors Papers

This 12 page thesis examines the measurement of ion concentrations in solution using electrometric titration.

The Amount And Identification Of Amyl Alcohols In A Commercial Mixture Of Pentanols, M. Eugenia Eberhard

Bachelors’ Theses

Casing head gasoline obtained from natural gas yields five commercial products. One of these is a mixture of amyl alcohols. As treated by the Sharples Company, West Virginia, pentane is separated and treated with chlorine. Three chlorine derivatives are produced. These are treated with caustic soda and may f'orm eight possible amyl· aloohols~1 The products of the normal pentane, only, are the subject matter of this thesis.

A Study Of The Dissociation Of Calcium Hydride, Kenneth Elwin Walker

Honors Theses

The calcium hydride equilibrium has been investigated by a number of men but the results obtained have been almost as diversified as the the number of workers. There is considerable doubt as to the mechanism of the dissociation and the compounds formed. Some workers claim evidence of the two hydrides while others found only the normal hydride, CaH2. In most of the previous work, the equilibrium has been more or less disturbed by the volatility of the calcium and the hydride and also the reaction of the calcium or the hydride on the quartz containers. In this work an attempt …

Iron And Cobalt Salts As Catalysts In The Oxidation Of Sodium Sulfite By Free Oxygen, Loren C. Bryner

Theses and Dissertations

The present investigation was carried out to show the catalytic effect of some iron and cobalt salts on the oxidation of sodium sulfite solutions by free oxygen. The rate of reaction was determined by measuring the volume of water required to replace the absorbed oxygen. A photograph and diagrammatical arrangement of the apparatus is given, (Page 14). From the preliminary experiments it was found that the rate of oxidation of sodium sulfite solutions is dependent upon concentration, and speed of the shaker.

Scholasticism An Intellectual Basis And Unifying Principle Of Modern Science, Alice V. Johnson

Electronic Thesis and Dissertation

Amid the almost uninterrupted disintegration of systems during the last three centuries, the philosophy of St. Thomas has alone been able to stand the shock of criticism; it alone has proved sufficiently solid and comprehensive to serve as an intellectual basis and unifying principle for all the new facts and phenomena brought to light by modern science.

The Effect Of Carbon Dioxide Tension Upon The Ability Of Goldfish To Abosorb Oxygen At Low Tension, Thressa A. Hickman

Masters Theses

Within recent years much has been contributed to our knowledge of the physiology of respiration. Van Slyke (1921) in a study of the carbon dioxide carriers of the blood concluded that hemoglobin is almost as completely responsible for the transport of CO₂ in the blood as it is for the transport of oxygen. And that from 80% to 95%, sometimes possibly all, of the alkali furnished to neutralize the CO₂ that enters the venous blood comes from the hemoglobin.

Powers (1922) found that species of marine fishes have an optimum pH of more or less wide range for …

Scholasticism An Intellectual Basis And Unifying Principle Of Modern Science, Alice V. Johnson

Electronic Thesis and Dissertation

No abstract provided.

A Study Of The Electrical Resistance Of Glass As A Function Of The Temperature, William Alfred Yager

Honors Theses

This work was undertaken with the initial intention of determining the specific resistance of various kinds of glass as a function of the temperature. Various methods of measuring the resistance of glass were tried. In this experimental work, 60 cycle alternating current was used throughout while the conductivity unit shown in Plate 1 proved a very satisfactory and convenient arrangement for comparing the resistance of glass at various temperatures. Time did not permit the measurement of specific resistances as intended.

The Sensitivity Of The Ortho-Tolidine Test For Free Chlorine In Milk Serum, Estelle Downer

Bachelors’ Theses

In the Journal of Industrial and Engineering Chemistry for November, 1913, J.W. Ellms and S.J. Hauser introduced the ortho-tolidine test for the detection of minute quantities of free chlorine in water. Antecedant to the experimentation of the above men with ortho-tolidine, the starch-iodide test ·was universally used for the· detection of free chlorine. In this test, the chlorine is calculated by liberating iodine from potassium iodide by the available chlorine, and the iodine being titrated with sodium thio sulfate. starch solution is used as the indicator. However, this particular method offers difficulties in the presence of minute quantities of chlorine …

The Preparation Of Certain Inorganic And Organic Compounds Which May Be Of Use In Mineralogical Separations, Clarence Jay Black

Masters Theses

"In the work with minerals, there has been many mechanical means devised whereby the ores could be separated from the gangue and other material. Among those means which are used to-day, especially in the laboratory tests upon minerals, to quickly determine the value of an ore, heavy liquids have become quite popular. This means of mechanical separation is merely to place finely ground ore containing particles of varying density into a liquid of heavier density than the greater portion of the mineral, which will allow the heavier portions to sink and the lighter to float, which is usually gangue. This …

A Study Of The Baking Process Of Oil Varnishes And Enamels, Roy Herman Kienle

Honors Theses

Before any object which has been given a coat of varnish or enamel is ready for use, the varnish film must be converted to the solid state. This is accomplished either by allowing the film to air dry or by baking it. For a considerable number of purposes air drying is satisfactory. However, in some of our largest industrial applications, as for example in portions of the electrical and automobile industries where the most severe requirements are demanded of a varnish film, baking is extensively used. In certain of these manufacturing operations, as in the manufacture of enameled wire, and …

Measurement Of Particle Size And Distribution In A Suspension, William Tappen Eveleth

Honors Theses

The purpose of the present investigation was the determination of size of "Glyptal" in suspension.

Studies Of Alkali Metals, Lester Clark Lewis

Honors Theses

Studies of the alkali metals have directness that leads to progress in both our general knowledge of chemistry and in common usefulness, which so encourages and rewards the advance of pure knowledge.

As commonly studied, in combination, they react so simply that we study them when we look for simplicity.

The Effect Of Aldehydes On The Solutions Of Iron Wire In Hydrochloric Acid, Mary Margaret Bannen

Bachelors’ Theses

The destruction of iron by corrosion, under the influence of natural agencies, is far more rapid than the decay of wood and other materials of construction. Were it not for iron, the erection of large works of engineering would be impossible. Their very size and consequent cost represent a large sum of human energy. This is, after all, the only true foundation for wealth and it becomes a duty to preserve iron from decay.

The Oxidation Of Mineral Oils And The Effect Of Positive And Negative Catalyst On The Oxidation Process, Arthur John Sherburne

Honors Theses

Although the readiness with which petroleum oils oxidize when exposed. to heat and air is well-known, and a great many so-called "service and "sludging" tests have been devised to ascertain and predict empirically, the value of oils when put to use as lubricants in automobiles, turbines, etc., or in transformers and condensers as heat absorbers and dielectric, little has been known of the chemistry of the oxidation of oil and of the quantitative effect on this oxidation of various catalytic substances. An ever increasing interest in petroleum chemistry can be noted by a reference to the literature of the past …

Equilibrium In The System Calcium, Calcium Hydride, Hydrogen, Douglas Small

Honors Theses

Moissan first showed in a qualitative way that hydrogen and calcium form a combination which is very little dissociated below 700 degrees C. He also showed that this compound can be expressed by the chemical formula CaH2 and seemed to be a well defined compound. Gautier makes a statement that calcium hydride begins to dissociate as soon as the hydrides of strontium and barium (about 675 degrees C.) Moldenhauer and Roll-Hansen made a systematic study of the dissociation from 780 degrees C. to 1027 degrees C. These workers point out that the equilibrium pressures may be masked by the action …

Selenium Sulfide -- A New Detector For Mercury Vapor, Birger Wilhelm Nordlander

Honors Theses

A new indicator for mercury vapor of extremely high sensitivity has been found; indeed, there seems to be practically no lower limit to the concentration that can be detected. This method is based on the reaction between active selenium sulfide and the vapor. The selenium sulfide is applied as a coating to paper and the coated paper is blackened on exposure to the air containing mercury vapor, the degree of blackening being a function of time of exposure, concentration of the mercury and other factors, which can be definitely controlled. Apparatus has been developed by means of which it is …

The Solubility Of Solid Paraffin In The Lower Molecular Weight Hydrocarbons, Paul Weber

Masters Theses

"In the process of oil refining, a certain fraction of distillate from the crude oil composes the so-called wax distillate fraction from which is obtained the various lubricating oils. But the presence of the waxes and solid paraffins in these oils is very undesirable as they possess no lubricating qualities. Consequently, they must be removed from this wax distillate before the oil can be marketed"--Introduction, page 1.

A Study Of Triboluminescence, George David Read

Honors Theses

The study of triboluminescence, a phenomenon of no great practical value at the present time, is representative of a class of phenomena which scientists choose to call “cold light” and whose cause has for many years been without satisfactory explanation. Because of the fact that no use has been found for the action which brings about this production of light very little work has been done to determine, quantitatively, any facts regarding it, and we have only a few theories which have been advanced without sufficient experimental data to prove any of them. Hence, this work was undertaken with only …

A Direct Reading Ionization Gauge For Pressure Measurement, A Calibration Of Standard Radio Tubes As Ionization Gauge, And A Determination Of The Vapor Pressure Curve For Solid Titanium Tetrachloride, Neil B. Reynolds

Honors Theses

.The work to be described in the following pages falls naturally under three distinct headings, and will, therefore, be taken up into three separate sections.

The work on the Direct Reading Ionization Gauge as performed under the direction of Mr. C. G. Found of the General Electric Research Company and is the subject of a paper by him and the author now in the hands of the editors of the Journal of the Optical Society of America and Review of Scientific Instruments. The remainder of the work reported here was done by the author at the Research Laboratory of the …

A Study Of The Electrical Conductivity Of Glass, William Worden Day

Honors Theses

This work was undertaken with the view of finding the alternating-current resistance of a specimen of soda-lime glass, and of determining how it changes with time, temperature, and amount of current passed. In all runs, we have restricted our work to the case of a one to one replacement of sodium ions for sodium ions by using a fused mixture of sodium-nitrate and sodium-nitrate as the electrolyte which makes contact to each side of the glass. Electrodes of both platinum and nickel were used to make contact with the fused salts.

Studies Of Tungsten Hexachloride, Arthur Andrew Vernon

Honors Theses

The purpose of this thesis is to give a summary of the work done in studying the equilibrium conditions and rate of reaction of the compound tungsten hexachloride, together with some of its applications to the elimination of spots in coiled filaments. Tungsten hexachloride is a purple colored crystalline compound formed by passing chlorine over red hot tungsten in a tube from which all the air has been washed. It is rather unstable at room temperature in the presence of moist air, forming an oxychloride formula WoCl4 and then decomposing into tungsten oxide into the formula WO3 and the vapor …

A Study Of The Equilibrium Between Lead, Lead Iodide And Iodine, William Worden Day

Honors Theses

Although considerable work was done in 1924 by N. B. l Reynolds on the equilibrium between Lead, Lead Iodide and Iodine, there is, at the present time, no accurate data as to vapor pressure of Iodine over Lead Iodide at various temperatures. The same is likewise true of almost all metal halides and this work was undertaken to get such data as could be computed 1 by direct pressure measurements. The fact that these vapors are very corrosive makes it impossible to use a McLeod gauge or any other common form of manometer to measure the pressure directly.

A Study Of The Process Of Electrical Conduction In Films Of India Ink, Henry Adolph Letteron

Honors Theses

The grid leak used in radio engineering often is an ink film. Is it used as a path of escape of electrons from the grid. This path is necessary, for electrons collect on the grid and cause it to become negatively charged. Since a vacuum tube will not function unless the grid is charged positively with respect to the filiament, the necessity of the grid leak is obvious. The rate of absorption of electrons by the grid, and of their removal by the grid leak can be controlled to a certain extent by varying this grid leak resistance.

The Sugar Content Of Blood, Ben King Harned

Masters Theses

Summary and Conclusions:

1 We have shown that the picric acid methods are not accurate.

2. We have shown that the titrimetric methods are not adapted to clinical use.

3. We have demonstrated that the Folin-Wu method, which gives the same results

as the titrimetric methods, and is the most accurate method used in clinics,

gives results approximately 15 per cent too high, because of interfering

substances.

4. We have developed a mercuric nitrate method, specific for blood sugar by

virtue of the fact that it precipitates interfering substances before making the

determination.

5. We have developed an acetone method, …

The Equilibrium Between Lead, Lead Iodide And Iodine, Neil Bailey Reynolds

Honors Theses

The fact of the instability of lead iodide at moderately high temperatures is well known. This work was undertaken in order to discover, if possible, the degree of dissociation, its change with the temperature, and to collect any other important facts connected with the equilibrium.

Methods In Determinative Minerology, Ruth Hespenheide

Chemistry Honors Papers

This 11 page thesis examines various schemes for determining minerals.

The Disintegration Of Refractory Brick By Carbon Monoxide, Wilbur J. Darby

Masters Theses

"In experimental work carried on at East St. Louis, Illinois in 1916 and 1917, with a furnace of commercial size for the electrothermic dry distillation of zinc ores, a difficulty that developed was the destruction of the firebrick lining in certain parts of the large condenser. The condenser was satisfactory in other ways, yielding a large proportion of the zinc as liquid metal, with no blue powder; but in order to obtain a proper length of service from the condenser it became necessary to find and overcome the cause of the disintegration of the lining ... it will be evident …