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Articles 33151 - 33180 of 33242
Full-Text Articles in Entire DC Network
A Study Of The Miscibility Of Various Liquids With Ethylene Glycol, Joseph J. Furlong
A Study Of The Miscibility Of Various Liquids With Ethylene Glycol, Joseph J. Furlong
Bachelors’ Theses
Ethylene glycol is a compound possessing great interest, both from a theoretical and a practical standpoint. In its properties it lies midway between ethyl alcohol, C2H50H, and glycerol, C3H5(0H)3, the three compounds together forming an homologous series of alcohols.
A few years ago this substance was a scientific curiosity, produced solely by laboratory methods, and without any commercial value, although it had been known for more than sixty years. Today the manufacturers cannot produce enough glycol to satisfy the growing demand. The DuPont organization wanted to use it in a …
A Study Of Halowas Oil In Reference To Its Properties And Uses, Joseph F. Hoffman
A Study Of Halowas Oil In Reference To Its Properties And Uses, Joseph F. Hoffman
Bachelors’ Theses
Halowax oil, specific gravity 1.25, is a thinly fluid mobile liquid, almost colorless, having a characteristic odor which is not unpleasant, heavy, or persistent. It is manufactured by the Halowax Corporation, a division or the Bakelite Corporation, at Wyandotte, Michigan.
The Development Of Colloid Chemistry, Oscar A. Bouise
The Development Of Colloid Chemistry, Oscar A. Bouise
Electronic Theses and Dissertations
At first, it was a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, with the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon . But maybe it was not due time fir the unfolding of the great secret, for Graham's focus only revealed a more complicated mist that had been seen before. …
The Development Of Colloid Chemistry, Oscar A. Bouise
The Development Of Colloid Chemistry, Oscar A. Bouise
Electronic Theses and Dissertations
At first, it was as a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, which the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon.
The Determination Of Hydrogen Ion Concentration By The Electrometric Method, Evelyn Matthews Cook
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 Corrosion Prevention Qualities Of The Aldehydes, Oliver R. Mackenzie
The Corrosion Prevention Qualities Of The Aldehydes, Oliver R. Mackenzie
Bachelors’ Theses
In preparing the natural ore of iron for commercial use, man has met with great success. At present, approximately 36,000,000 tons of steel are produced yearly in the United States alone. Man, however, has been confronted by an unceasing, tireless agent which tends to return the newly manufactured steel to the oxide of the iron, a condition similar to that of the natural ore. To prevent this action, man has put up a continual fight, using many preventitlves, but to date corrosion has overcome all of man’s contrivances and emerged the winner.
On The Disposal Of Acid Sludge- A Waste Product Obtained In The Process Of Benzol Rectification, Maurice D. Gracey
On The Disposal Of Acid Sludge- A Waste Product Obtained In The Process Of Benzol Rectification, Maurice D. Gracey
Bachelors’ Theses
A certain stage of benzol rectification yields a waste product termed acid sludge, which forms a problem of disposal because of certain physical and chemical properties.
The Throwing Power In Chromium Plating, Samuel F. Gerstein
The Throwing Power In Chromium Plating, Samuel F. Gerstein
Bachelors’ Theses
In chromium plating, it is very difficult to get a continuous deposit of chromium of uniform properties upon irregularly shaped articles and especially upon those having deep recesses. the nature, cause, and methods on improvement of this poor throwing power will be treated.
A Study Of Gel Formation In Kerosene In Contact With Sodium, Jerome M. Weller
A Study Of Gel Formation In Kerosene In Contact With Sodium, Jerome M. Weller
Bachelors’ Theses
The origin of the problem to be considered in this paper is traced to the observations of John R. Koob, Ph.D., Head of the Chemistry Department of Marquette University. It was his experience to note that the kerosene, in a bottle, containing cut sodium for the organic laboratory, had solidified to a gel, resembling Vaseline in appearance.
The Study Of The Effects Of Different Metallic Soaps On The Water Content Of Water-In-Gasoline Emulsions, Lynn D. Wilson
The Study Of The Effects Of Different Metallic Soaps On The Water Content Of Water-In-Gasoline Emulsions, Lynn D. Wilson
Bachelors’ Theses
The study of emulsions and emulsification is of very great theoretical and practical interest. From the standpoint of pure science it throws much light on the problems of surface tension, surface concentration, absorption, surface films, electrical double layers. Brownian movement, and the general theory of disperse systems and colloids. It is also of importance in biological science, e.g., the adsorption of fats and the permeability of membranes. When industrial and applied science are considered, it is remarkable how many subjects of interest and importance are dependent on a knowledge of the formation, behavior, and stability of emulsions. In this connection, …
The Influence Of Freezing On The Occurrence Of Reducing Sugar In The Potato, Leo B. Perssion
The Influence Of Freezing On The Occurrence Of Reducing Sugar In The Potato, Leo B. Perssion
Bachelors’ Theses
The purpose or this thesis was to see if the change or potato starch to a reducing sugar in the potato on freezing was due to the freezing itself or to some enzymatic reaction. For we know that reducing sugars are formed in the potato by just freezing, therefore it should be possible to manufacture sugar by using pure potato starch as a base. Although this problem may seem to be an unimportant labor as the supply of sugar is large and the price of sugar cheap; this process of obtaining sugar would save thousands or bushels of potatoes every …
A Comparative Study Of The Chemical Composition Of Artificially Dried Hay To Obtain An Insight As To Its Nutritive Value, Charles F. Schalbe
A Comparative Study Of The Chemical Composition Of Artificially Dried Hay To Obtain An Insight As To Its Nutritive Value, Charles F. Schalbe
Bachelors’ Theses
This work has been undertaken as a ·result of tests recently carried out at the Greene Brothers' Brook Hill Farm at Genesee Depot, Wisconsin. It was found that cows, when fed artificially dried hay, produce milk in quantities greatly in excess of that accountable from known differences in the hay. Moreover, the milk seemed to have a different flavor - similar to pasture produced milk.
The Effect Of Current Density On The Efficiency Of A Brass Cathode In Chromium Plating, Anton E. Budner
The Effect Of Current Density On The Efficiency Of A Brass Cathode In Chromium Plating, Anton E. Budner
Bachelors’ Theses
That chromium could be electrodeposited from chromic acid baths, has been an accomplished fact for over 70 years. However, only in the past few years, has the mechanism of the process been sufficiently understood to permit chromium plating on a commercial basis. Because of the properties and advantages of this particular deposit, tremendous interest and activity has developed in this practically new field. Numerous patents have been granted, but relatively little specific scientific information has been published. Much work can yet be done towards the development of this field. It is the problem of this thesis to study the effect …
An Analysis Of Pecan Nut Shells, Marie I. Bond
An Analysis Of Pecan Nut Shells, Marie I. Bond
Bachelors’ Theses
This thesis deals with the methods or analysis or pecan nut shells and an attempt to identify the extracted pigment.
At present nut shells are waste products. This makes their study interesting from a commercial standpoint. In view of the fact that very little work of this kind has been done, nut shell analysis offers interesting research problems as well as excellent practice in the technique or organic analysis.
Such great interest is now being taken in plant pigments that, a thorough investigation of the red pigment yielded by pecan nut shell would be an appreciated contribution to science.
A Study Of Various Metallic Electrodes In Potentiometric Titrations, Louie Boncyk
A Study Of Various Metallic Electrodes In Potentiometric Titrations, Louie Boncyk
Bachelors’ Theses
The significance of ion concentrations has been the subject of many investigations during the last few years. The results obtained have demonstrated without question the unlimited possibilities existing for laboratory and industrial applications of ion concentration measurements. It has been shown in many instances biological activity, fermentation, and filtration are influenced to a large extent by variations in the H-ion concentration. In addition, the way is open for improved control and accuracy in the many neutralization problems encountered in the laboratory. The lack of suitable electrodes has greatly retarded the practical applications of H-ion measurements to plant industrial problems. The …
The Distillation Curves Of Several Liquid Binary Stystems Of Various Aliphatic Alcohols With Benzene And Toluene, Jack Philip Eigen
The Distillation Curves Of Several Liquid Binary Stystems Of Various Aliphatic Alcohols With Benzene And Toluene, Jack Philip Eigen
Bachelors’ Theses
The object of this thesis is to determine the distillation curves of several liquid binary systems and to locate any constant boiling mixture by means of graphical representation.
Such an investigation has a commercial aspect. A research of this kind is valuable to the paint industry, and also for any industry interested in preparing very pure liquids by distillation. The following investigation limits itself to a study of. boiling point curves of mixtures of various aliphatic alcohols with benzene or toluene. These systems are reputed to have a minimum boiling which would be very valuable in the paint industry as …
Experiments On The Effect Of Current Density Of The Porosity Of Chromium Plated Steel, William G. Hilger
Experiments On The Effect Of Current Density Of The Porosity Of Chromium Plated Steel, William G. Hilger
Bachelors’ Theses
The application of chromium plating in industry has grown out of a series of experiments conducted in the past few years. However as early as 1854, research was carried on in this field, but it was only in the years 1920 - 1925, that the chromium plating industry became an actual fact. From then on it has progressed very rapidly. In the present day chromium is applied for two main purposes: (a) to produce a permanent and decorative effect and, (b) to prolong the life of mechanical parts subjected to unusual conditions of wear or temperature. The electrodeposition of chromium …
The Amount And Identification Of Amyl Alcohols In A Commercial Mixture Of Pentanols, M. Eugenia Eberhard
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
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
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
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
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
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
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
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
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
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
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
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
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 …