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Articles 33031 - 33060 of 33105

Full-Text Articles in Physical Sciences and Mathematics

The Amount And Identification Of Amyl Alcohols In A Commercial Mixture Of Pentanols, M. Eugenia Eberhard May 1930

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.


Iron And Cobalt Salts As Catalysts In The Oxidation Of Sodium Sulfite By Free Oxygen, Loren C. Bryner Jan 1930

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.


The Quantitative Analysis Of Sodium Acetate, Henry A. Budzinski Aug 1929

The Quantitative Analysis Of Sodium Acetate, Henry A. Budzinski

Bachelors’ Theses

There are many methods by which Sodium Acetate can be analysed for its purity. Each method is satisfactory and the results obtained vary only slightly. However, this essay is for the purpose of determining the method which is most suitable for all conditions, and setting this method as a standard.


Scholasticism An Intellectual Basis And Unifying Principle Of Modern Science, Alice V. Johnson Jul 1929

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

Electronic Theses and Dissertations

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.


A Study Of The Oxidation Of D-Glucose With Air In A Saturated Solution Of Barium Hydroxide, Clyde Wilson Eddy May 1929

A Study Of The Oxidation Of D-Glucose With Air In A Saturated Solution Of Barium Hydroxide, Clyde Wilson Eddy

Open Access Master's Theses (through 2010)

The conversion of one aldose into another aldose and several ketoses slowly by weak alkalis at ordinary temperatures and quickly with much decomposition at elevated temperatures, was first observed by Lobry de Bruyn and later investigated by Nef and his students in an elaborate study on the action of strong alkalis alone and with oxidizing agents extending over a period of ten years. The results of these studies on oxidation were interpreted as depending on the presence of several intermediate enediols. The oxidation of sugars in approximately six normal alkali medium with air or oxidizing agents all give about the …


A Problem Involved In The Parkerizing Of Iron And Steel, Frank A. Harmer May 1929

A Problem Involved In The Parkerizing Of Iron And Steel, Frank A. Harmer

Bachelors’ Theses

The problem involved in the parkerizing of iron was presented by the National Lock Washer Company of Milwaukee, Wisconsin


A Study Of The Official Methods Of Analysis For Determining The Availability Of Nitrogen In Fertilizers, Raymond A. Schmidt Apr 1929

A Study Of The Official Methods Of Analysis For Determining The Availability Of Nitrogen In Fertilizers, Raymond A. Schmidt

Bachelors’ Theses

The Milwaukee Sewage Disposal Plant is unique in that it has successfully met the engineering and chemical problems encountered in putting the theories and ideas of the simple experimental station into operation on a large scale. Municipal sanitation was the aim of the plant. It has accomplished its purpose and has been operating several years with a high degree of efficiency and low per capita cost. The plant will be called upon to take care of the sanitary needs of Milwaukee for many years to come.


Scholasticism An Intellectual Basis And Unifying Principle Of Modern Science, Alice V. Johnson Jan 1929

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

Electronic Theses and Dissertations

No abstract provided.


Anhydrous Alcohol And The Vapor Phase Method Of Preparing It, Cleetis Brown Jan 1929

Anhydrous Alcohol And The Vapor Phase Method Of Preparing It, Cleetis Brown

University of the Pacific Theses and Dissertations

Since the almost universal laboratory method of preparing absolute alcohol requires considerable time and trouble, gives a low yield of alcohol and leaves a distilling flask badly clogged with hydrated lime, Professor S.S, Kistler and I undertook the following research in the hope that we might devise a new method that would be both rapid and easy to perform.

Upon reviewing the possibilities, it seemed evident that any method to be rapid would have to involve drying In the vapor phase. Diffusion in a liquid being so slow that when a drying agent is placed in the liquid phase an …


The Sensitivity Of The Ortho-Tolidine Test For Free Chlorine In Milk Serum, Estelle Downer Jun 1928

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 …


A Study Of The Electric Current Rectifying Properties Of Metallic Salts In Contact With Metals, Simon Sander Share Jun 1928

A Study Of The Electric Current Rectifying Properties Of Metallic Salts In Contact With Metals, Simon Sander Share

Bachelors’ Theses

The property of offering greater electrical resistance to a current when flowing in one direction than when flowing in the opposite direction possessed by some metallic salts in contact under pressure with certain metals is of interest both from a purely scientific viewpoint and from a commercial viewpoint. The phenomenon is of interest to the scientist because it has not yet been properly explained and because a suitable explanation might lead to a better understanding of what actually occurs at the contact surfaces of a metal and a salt and also of the condition of metallic surfaces. The property has …


Solubility Of Different Waxes In Various Solvents, Sol Leslie Spracker Jun 1928

Solubility Of Different Waxes In Various Solvents, Sol Leslie Spracker

Bachelors’ Theses

The waxes are esters formed by the union of fatty acids and alcohols not belonging to the glycerol series. Hence waxes are sharply distinguished from fats in that they contain no glycerol; they have howe er, many properties in common with true glycerides (fats); thus they can be saponified with alkalies, the salts of fatty acids and alcohols being obtained.


The Preparation Of Certain Inorganic And Organic Compounds Which May Be Of Use In Mineralogical Separations, Clarence Jay Black Jan 1928

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 Ph Of Sodium Citrate In Relation To Blood Transfusion, Roman Edward Galasinski Jun 1927

A Study Of The Ph Of Sodium Citrate In Relation To Blood Transfusion, Roman Edward Galasinski

Bachelors’ Theses

Blood transfusion, within recent years, has become a subject of paramount therapeutic importance. A few years back the technique of blood transfusion was so difficult that there were only a relatively few who possessed the requisite skill to perform the operation and then not always successfully. But since the year 1907 the evolution and perfection of blood transfusion procedures has been so steady and immense that, as a therapeutic measure, it has come into general use in the treatment of various acute and chronic lesions.


The Effect Of Aldehydes On The Solutions Of Iron Wire In Hydrochloric Acid, Mary Margaret Bannen Jun 1927

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 Picric Acid Method Of Sugar Determinations As Applied To Solutions Containing Maltose And Lactose, John J. Hennecke Jun 1927

The Picric Acid Method Of Sugar Determinations As Applied To Solutions Containing Maltose And Lactose, John J. Hennecke

Bachelors’ Theses

Lewis and Benedict based their method of sugar determination upon the reaction which takes place when a glucose solution is heated with a few C.C. of picric acid to which a small amount of alkali has been added.


The Effect Of Various Waxes On The Rate Of Evaporation Of Light Naphtha, Juel Osmund Severson Jan 1927

The Effect Of Various Waxes On The Rate Of Evaporation Of Light Naphtha, Juel Osmund Severson

Bachelors’ Theses

Solids dissolved in a liquid produce a general decrease in the evaporation rate of the solvent. Experiments were performed, using light naphtha as the solvent and Paraffin, Japan, Carnauba, Candelilla, Ozokerite, Montan, and Bees waxes as solutes. These waxes were selected since they are the waxes most commonly used in the manufacture of floor waxes and work of the kind presented in this thesis finds its greatest application in connection with that industry.


The Solubility Of Solid Paraffin In The Lower Molecular Weight Hydrocarbons, Paul Weber Jan 1927

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.


The Evaporation Of Pyroxylin Solvents And Non-Solvents And The Effect Of Dissolved Pyroxylin On Various Types Of Evaporation Curves, Herbert Heinrich Jun 1926

The Evaporation Of Pyroxylin Solvents And Non-Solvents And The Effect Of Dissolved Pyroxylin On Various Types Of Evaporation Curves, Herbert Heinrich

Bachelors’ Theses

In 1833 Braconnot described a body which he called Xyloidine. This material was obtained by the action of nitric acid on starch. In 1838 Pelonze produced a similar body by treating paper with nitric acid. Although these experiments were conducted several years before those of Soh8nbein, yet we give Schonbein the honor of priority because of bis extensive studies on the new compound "ex­plosive cotton wool". The material was produced by the combined action of nitric and sulphuric acids on cellulose. A patent was granted to him in the United States December 5, 1846, but little attention was paid to …


A Study Of The Preparation And Properties Of Some Metallic Soaps, Charley George Hagan Jun 1926

A Study Of The Preparation And Properties Of Some Metallic Soaps, Charley George Hagan

Bachelors’ Theses

Soap may be defined as the sodium or potassium salt of the acids that are found in fats. The metallic soaps are those soaps or salts of the metallic bases other than sodium or potassium. The Study of the preparation, properties and uses of metallic soaps is rather an old one, most of the research along that line being done during the last quartile of the nineteenth century. Nothing of any importance has been done of late years in this field of research. Nearly all the work has been done by foreign investigators. The metallic soaps of oleic acid are …


The Separation Of Inorganic Salts From Food Products By Dialysis, Nicholas H. Tasto Jun 1925

The Separation Of Inorganic Salts From Food Products By Dialysis, Nicholas H. Tasto

Bachelors’ Theses

The phenomena of the separation of substances by 'Various membranes was first -discovered by Thomas Graham, who found that certain materials passed through membranes much more readily than others. This consequently afforded him a norm by which he distinguished a variety of substances. Those which passed through the membrane most readily he called crystalloids, because of their crystalline nature. Those which were retained colloids, because of their gelatinous or glue like consistency. The distinguishing factor is however not a legitimate one, because it has been proven by Dr. Kahlenberg that opposite reactions occur.


A Study Of The Lead-Sodium Alloy, Harrison Willmot Jun 1925

A Study Of The Lead-Sodium Alloy, Harrison Willmot

Bachelors’ Theses

The history of the alkali metal alloys does not indicate that researches into this particular field have been extensive and of a necessary consequence, methods and practices for the handling of the alkali metal alloys in general and for the sodium.


A Study Of Phytosterol Obtained From Cocoa Beans And Cocoa Butter, Norman Anthony Pokorny Jan 1925

A Study Of Phytosterol Obtained From Cocoa Beans And Cocoa Butter, Norman Anthony Pokorny

Bachelors’ Theses

Despite the fact that considerable work has been done on cholesterol, relatively little is known about its isomer, phytosterol. Both cholesterol and phytosterol belong to the general group of sterols. Cholesterol is described as an aromatic sterol, a mono~atomic secondary alcohol, containing an iso-propyl and a vinyl group, with a terpene-like structure. Cholesterol was first discovered by Conradi in 1775, then by Gren (1788) in biliary calculi. In 1785 Fourcroy isolated cholesterol from gall-stones, one variety of which is composed almost wholly of it, but it was confused with adipocere, until Chevreul (1814) discovered its true nature, when he declared …


A Study Of The Reactions Of The Sulphies Of The Tin Group With Hydrochloric Acid And In Non-Aqueous Solutions, Charles Bernard Cannon Jan 1925

A Study Of The Reactions Of The Sulphies Of The Tin Group With Hydrochloric Acid And In Non-Aqueous Solutions, Charles Bernard Cannon

Bachelors’ Theses

Arsenic, antimony, and tin constitute the so-called tin group, a subdivision of the hydrogen sulphide, or second group, in qualitative analysis.


Methods In Determinative Minerology, Ruth Hespenheide Jun 1923

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 Jan 1923

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 …


The Water Supply Of The City Of Milwaukee With Experimental Data, William K. Stumpf Apr 1922

The Water Supply Of The City Of Milwaukee With Experimental Data, William K. Stumpf

Bachelors’ Theses

All mankind, whether the wandering savage, the isolated pioneer, or the dweller in the congested city, requires a constant supply of water for his needs. This fact is attested to in all the civilizations of the past, and if we go back to biblical times, or to the days of ancient Greece and Rome, we read of the famous wells and aqueducts, from which the inhabitants derived their supplies.


Glucose From Corn Cobs, Barney Nudelman Jan 1921

Glucose From Corn Cobs, Barney Nudelman

Masters Theses

"The efforts of American chemists in recent years have been devoted largely to the utilization of our waste products...Corn cobs offer a particularly inviting field for research along this line on account of the large supply of cobs available and the variety of substances obtainable from them. One of the leaders in this branch of investigation is Dr. F. B. LaForge of the Chemistry Division of the Bureau of Agriculture, who has contributed numerous papers on the subject. In one of these, in collaboration with C. S. Hudson, he describes, among other things, the preparation of glucose, but recognizes the …


Quantitative Analysis (Gravimetric), L. Arthur Walton May 1920

Quantitative Analysis (Gravimetric), L. Arthur Walton

Chemistry Honors Papers

This 24 page thesis examines the determination of various compounds using gravimetric analyses.


Volumetric Chemical Analysis, Beatrice Brooks May 1920

Volumetric Chemical Analysis, Beatrice Brooks

Chemistry Honors Papers

This 20 page thesis illustrates various methods of volumetric processes.