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Articles 13861 - 13890 of 14062

Full-Text Articles in Engineering

Temperature Kinetics Of Nitrogen Dioxide-Ammonia Reactions, George Dillender Jr. Jan 1952

Temperature Kinetics Of Nitrogen Dioxide-Ammonia Reactions, George Dillender Jr.

Masters Theses

"The purpose of this project was to study the rapid rate of reaction of nitrogen dioxide and ammonia and if possible to determine the mechanism of the reaction.

The author became interested in this project through his interest in rockets, jets, and the types of fuel that are used to propel them.

The prospect of using nitrogen dioxide and ammonia as a possible fuel was the basic reason for the selection of this project.

Very little has been done in the study of the reaction of nitrogen dioxide and ammonia, although the reaction seems to be a simple one.

How …


Experimental Techniques In The Kinetic Study Of Rapid Gas Phase Reactions, William Dean Burch Jan 1952

Experimental Techniques In The Kinetic Study Of Rapid Gas Phase Reactions, William Dean Burch

Masters Theses

“In recent years chemical kinetics has assumed a prominent role in Chemical Engineering studies. While a considerable amount of data is available in the general field, very little is available for rapid gas phase reactions, i. e., reactions that are completed in from a few milliseconds up to a few seconds. Recently techniques have been developed for the measurement of the rate of such reactions.

With the advent of jet aircraft, the study of very rapid oxidation reactions becomes imperative. One such reaction that presents itself in this category is the oxidation of anhydrous ammonia in the vapor state by …


Porosity-Permeability Relationships Of Unconsolidated Sands, Robert Marchel Ponder Jan 1952

Porosity-Permeability Relationships Of Unconsolidated Sands, Robert Marchel Ponder

Masters Theses

"Unconsolidated sand reservoirs containing oil and gas present difficult problems to the petroleum engineer. Among these problems is that of the determination of the reservoir porosity to facilitate oil and gas reserve and evaluation calculations.

This problem is especially difficult because, to the author's knowledge, no method has been devised to obtain a core sample of the unconsolidated sand that retains the same porosity and permeability characteristics in the laboratory as it had underground. As a result, the petroleum engineer must rely upon empirical methods of calculating the reservoir porosity when the sand is not consolidated.

Many investigators have attempted …


The Equilibrium Distribution Of Moisture Between Freon-12 And Selected Commercial Desiccants., Arnold Jarvis Gully Jan 1952

The Equilibrium Distribution Of Moisture Between Freon-12 And Selected Commercial Desiccants., Arnold Jarvis Gully

LSU Historical Dissertations and Theses

No abstract provided.


Comparative Refining Methods Of A Cane Sugar Solution., Pramod Lal Sarma Jan 1952

Comparative Refining Methods Of A Cane Sugar Solution., Pramod Lal Sarma

LSU Historical Dissertations and Theses

No abstract provided.


The Synthesis Of 2-Amino-4-Chlorophenol-6 Sulfonic Acid, Herman Albert Bronner Jun 1951

The Synthesis Of 2-Amino-4-Chlorophenol-6 Sulfonic Acid, Herman Albert Bronner

Theses

The work described in this thesis was undertaken with the view of exploring a reaction sequence suggested by early French investigators to synthesize 2-amino-4-chlorophenol-6-sulfonic acid especially in reference to the German claim that a low yield of product would result following this preparation, In particular, a successful application of this procedure would afford a relatively direct and inexpensive route to the sulfonic acid which is used as an azo dyestuff intermediate and could possibly find application in medicinal chemistry.

It was found that sulfonation and nitration of p-dichlorobenzene gave a high yield of the sodium-2-nitro-1,4-3 dichloro-benzene-6-sulfonate (91%) when using the …


Tetranitromethane And Related Compounds, Thomas James Tully May 1951

Tetranitromethane And Related Compounds, Thomas James Tully

Theses

No abstract provided.


Magma 1951, Associated Students Of The Montana State School Of Mines. Apr 1951

Magma 1951, Associated Students Of The Montana State School Of Mines.

Magma 1948-1997

No abstract provided.


Cellulose Pellets, John J. O'Neill Jr. Jan 1951

Cellulose Pellets, John J. O'Neill Jr.

Professional Degree Theses

"This thesis describes the development of a new process for the manufacture of spherical particles of cellulose, regenerated from cellulose zanthate.

An electric equipment manufacturing company advised the author’s company that it had developed a device that required uniform spheres of regenerated cellulose having a diameter of about 75 to 100 mils. This company reported that it had developed a process for the manufacture of the cellulose particles but that the spheres produced by the process were not uniformly spherical. The equipment manufacturer considered that the functioning of the new device could be improved if the cellulose particles could be …


Oil Field Corrosion, Edwin Harry Barsachs Jan 1951

Oil Field Corrosion, Edwin Harry Barsachs

Masters Theses

"The corrosion of metals in the petroleum industry has become an important engineering problem. The rapid increase during recent years in costs of steel has caused the industry to intensify its efforts to minimize corrosion losses in pipe lines and well casings. An industry-wide research program has resulted in the development of improved methods of controlling corrosion of such equipment.

The purpose of this paper is to assemble and correlate the information concerning the different causes, the detection, and the mitigation of corrosion of metals used in the oil fields of the world. The causes that are presented in this …


The Use Of Oil-Base Drilling Fluids, William Wesley Collins Jan 1951

The Use Of Oil-Base Drilling Fluids, William Wesley Collins

Masters Theses

"Within the past few years the development of oil-base drilling fluids has become one of the more important contributions to drilling and production technology. The use or these new muds has increased as the benefits obtained have become more widely known and appreciated. Major problems in the petroleum industry have been, for many years, the contamination or drilling muds by salt water; control of mud when drilling through anhydrite, gypsum, or salt deposits; control of heaving or swelling shale; and water or mud blocking or the producing horizons. The development or oil-base drilling fluids is a direct contribution or engineers …


Recovering Oil From An Unconsolidated Sand By Means Of Combustion, David K. Anderson Jan 1951

Recovering Oil From An Unconsolidated Sand By Means Of Combustion, David K. Anderson

Masters Theses

"For many years, there has been talk expressing great concern about the oil reserves in the United States. Every four or five years, articles are published stating that we are running out of oil and our proved reserves, to date, are only adequate, at our present rate of consumption, for about 20 years. While this is true, it does not leave us with the complete picture. The industry in the past 20 years has never had more than a 20 year reserve. It must be said, however, that it is becoming more difficult with each passing year to find oil …


A Study Of An Industrial Waste Produced In The Manufacture Of Titanox, Kurt H. Frank Jan 1951

A Study Of An Industrial Waste Produced In The Manufacture Of Titanox, Kurt H. Frank

Masters Theses

"The problem involved in this thesis is definitely of an industrial nature in that it deals specifically with waste from a plant that is primarily concerned with the manufacture of pigment.

….the plant does have a method of recovering the soluble titanium by returning the overflow from the Dorr thickener to the digestion tanks to dilute (cut) the digestions. However, in the underflow (sewer) there is a tremendous amount of sludge that is sent directly into the nearest stream because of failure to realize something economical to do with it. This sludge contains roughly 30 per cent solids of the …


Well Interference In The South Silica Field, Langdon B. Taylor Jan 1951

Well Interference In The South Silica Field, Langdon B. Taylor

Masters Theses

"During World War II the Federal Government restricted oil-field drilling in the United States in order to conserve steel. The wartime regulations required 40-acre spacing in most areas. At the close of the war, the Federal drilling restrictions were lifted, and control of oil-well spacing reverted to the several state regulatory bodies. Each of these state agencies was then confronted with this problem: should 40-acre spacing be continued or should pre-war 10- and 20-acre spacing patterns be re-established?

The regulatory authority in Kansas, the State Corporation Commission, ordered an investigation in January, 1946, for the purpose of developing information upon …


The Design Of An Apparatus For The Study Of Fast And Slow Chemical Reactions Involving Gases And A Kinetic Investigation Of The Catalytic Decomposition Of Silver Oxide, Hilbert Walter Crocker Jan 1951

The Design Of An Apparatus For The Study Of Fast And Slow Chemical Reactions Involving Gases And A Kinetic Investigation Of The Catalytic Decomposition Of Silver Oxide, Hilbert Walter Crocker

Masters Theses

"An outstanding chemical engineer has stated that chemical kinetics is at present in a state similar to that of thermodynamics thirty years ago. The current situation with respect to thermodynamics and chemical engineering appears to be that a fair number of engineers understand the theory and appreciate the practical value of thermodynamics but are frequently handicapped in its use by a lack of data. This is especially true where data on material at extreme temperatures and pressures are required as in nuclear energy and jet propulsion development. The current situation with respect to chemical kinetics and chemical engineering is that …


The Specific Radioactivity And Ratio Of Hafnium To Zirconium In Ores From Different Continents And The Preliminary Design Of A Process For Producing Hafnium, Arliss V. Martin Jan 1951

The Specific Radioactivity And Ratio Of Hafnium To Zirconium In Ores From Different Continents And The Preliminary Design Of A Process For Producing Hafnium, Arliss V. Martin

Masters Theses

"An investigation of the weight ratio of hafnium to zirconium in ores from widely separated regions of the world was undertaken to extend knowledge on this ratio obtained by modern means and to compare with the results of previous investigators. This type of information is of interest in geochemical considerations and the value of some similar information in the literature has been vitiated by the relatively recent finding that past methods of analysis are not satisfactory. The specific radioactivity of the original ores was determined in an attempt to check the proposition originated by Hevesy and apparently generally held by …


Relationship Of The Overall Transfer Coefficient To The Factor In Ammonia Absorption, Ivan Lee Gray Jan 1951

Relationship Of The Overall Transfer Coefficient To The Factor In Ammonia Absorption, Ivan Lee Gray

Masters Theses

"Gas absorption has an important role in chemical and allied industries. It is used to separate one of a group of constituents from a gas stream. Poisonous or obnoxious gases may be removed from the gaseous waste products of chemical plants by absorbing them in suitable solvents.

Many investigations have been carried out and references too numerous to list have appeared in the literature on the general subject of absorption.

In all of this work one of the usual methods of reporting results has been to express the capacity of a piece of absorption equipment as an overall capacity coefficient …


A Visual Investigation Of The Appearance Of Turbulence In Annular Spaces., Thomas Anderson Feazel Jan 1951

A Visual Investigation Of The Appearance Of Turbulence In Annular Spaces., Thomas Anderson Feazel

LSU Historical Dissertations and Theses

No abstract provided.


Isobaric Heat Capacity Of Methane Over A Wide Range Of Temperature And Pressure, Edward W. Sledjeski Nov 1950

Isobaric Heat Capacity Of Methane Over A Wide Range Of Temperature And Pressure, Edward W. Sledjeski

Theses

No abstract provided.


Design And Test Of An Apparatus For Rate Measurements Of Rapid Gas Reactions, Erich Rolaff Jan 1950

Design And Test Of An Apparatus For Rate Measurements Of Rapid Gas Reactions, Erich Rolaff

Masters Theses

"The present study on rapid gas reactions was initiated with two main goals in view. The first objective was the development of equipment and methods for the treatment of problems arising in extremely rapid gas phase reactions. In recent years, with the advent of large scale applications of gas turbines and rocket motors, the process of high speed gas reactions, especially those of combustion and oxidation have become of increasing importance...The second main goal of the work was to apply the methods and equipment developed to the investigation of chemical systems of interest"--Introduction, page 1-2.


Thermal Recovery Of Petroleum By Electrical Heating, Harold Roy Coffer Jan 1950

Thermal Recovery Of Petroleum By Electrical Heating, Harold Roy Coffer

Masters Theses

"It is the purpose of this investigation to study the feasibility of recovering oil from laboratory size cores by passing electric current through the formation. If a voltage of sufficient magnitude could be applied to the formation to cause a flow of current, the formation would be heated. This heat should stimulate the flow of oil. The expansion of any gas present in the core together with the formation of hydrocarbon vapors should provide sufficient expulsive force to drive oil from the core. The effect of power expenditure, the necessary voltages, the changes of conductivity and power factor of the …


Investigation Of The Effect Of Absorption Tower Size Upon Overall Mass Transfer Coefficients, James Robert Murrell Jan 1950

Investigation Of The Effect Of Absorption Tower Size Upon Overall Mass Transfer Coefficients, James Robert Murrell

Masters Theses

"The purpose of this research project was to obtain data and determine whether or not a correlation exists between tower size and the overall mass transfer coefficient for a packed tower. A constant ratio of tower diameter to packing diameter of twelve to one was maintained. Three absorption towers were used; a twelve inch diameter iron tower, a six inch diameter iron tower, and a three inch diameter glass tower. One inch, one-half inch, and one-fourth inch Raschig rings were used in the corresponding towers as packing. The system used was the absorption of acetone by water from an acetone-air …


The Freezing Temperatures Of The System Aniline-Ortho Toluidine, Ray W. Fahien Jan 1950

The Freezing Temperatures Of The System Aniline-Ortho Toluidine, Ray W. Fahien

Masters Theses

"The purpose of this investigation was to determine the freezing temperatures of the system aniline-ortho toluidine and to speculate on the theoretical significance of these results. The properties of this system are of considerable practical engineering interest since the system falls in a class of low-freezing organic mixtures which may have value as fuels for jet propulsion devices required to operate at extreme altitudes or in Arctic regions. Since nitric acid has been found to be a very effective and convenient oxidizer, the search for a suitable fuel to be used in combination led to aniline as having the most …


A Fluidization Process For Making Sodium Sulphate From Sodium Chloride., Roger Foster Detman Jan 1950

A Fluidization Process For Making Sodium Sulphate From Sodium Chloride., Roger Foster Detman

LSU Historical Dissertations and Theses

No abstract provided.


The Physical And Chemical Properties Of Louisiana Molasses And Their Relation To Its Exhaustibility., Prasanna Chandra Goswami Jan 1950

The Physical And Chemical Properties Of Louisiana Molasses And Their Relation To Its Exhaustibility., Prasanna Chandra Goswami

LSU Historical Dissertations and Theses

No abstract provided.


Vapor-Liquid Equilibrium Of Non-Ideal Solutions., Virgil Orr Jan 1950

Vapor-Liquid Equilibrium Of Non-Ideal Solutions., Virgil Orr

LSU Historical Dissertations and Theses

No abstract provided.


The Separation Of Zirconium And Hafnium By Distillation : Ii. An Engineering Appraisal Of Aluminum Structural Materials., Everard G. Baker Dec 1949

The Separation Of Zirconium And Hafnium By Distillation : Ii. An Engineering Appraisal Of Aluminum Structural Materials., Everard G. Baker

Electronic Theses and Dissertations

A compilation of references dealing with the separation of hafnium and zirconium is presented, together with an evaluation of their possibilities. It is concluded that a distillation procedure holds the greatest promise. The theory of the separation of hafnium and zirconium by distillation of suitable compounds is given and experimental investigations are presented for confirmation.


A Thermometer Technique For The Determination Of Emissivities Of Finishes., N. P. Shah 1923- Sep 1949

A Thermometer Technique For The Determination Of Emissivities Of Finishes., N. P. Shah 1923-

Electronic Theses and Dissertations

Two thermometer techniques for the determination of emissivities of surface coatings are presented. One procedure involving the attainment of steady state hear transfer relations in coated thermometers placed through the wall of a duct at right angles to the direction of air flow was found to give consistent results. Another procedure based upon the rate of change of thermometer temperature was found to give consistent results only with excellent control of air conditions. The emissivities of a variety of paints, varnishes and lacquers were determined for temperature range 90⁰ F. to 140⁰ F. using silver and black coatings for standardization. …


Newspaper Matrix Backing Techniques., Robert Roscoe Childs Jun 1949

Newspaper Matrix Backing Techniques., Robert Roscoe Childs

Electronic Theses and Dissertations

The problem of developing suitable materials and techniques for the elimination of hand backing of mats was undertaken. A thermosetting resin of the resorcinol type, ad-mixed with 15 to 25 per cent short-fiber asbestos, was applied to the mats both as a paste and in the form of a partially cured resin sheet. Its use was discontinued since its inherent insulating properties and warpage were found to be undesirable.

After experimenting with several other backing materials and methods, the following procedure was concluded to be feasible:

(1) Spraying sodium silicate solution upon a sheet of blotting paper.

(2) Pressing the …


Semi-Micro Combustion, Solvent Extraction, And Oleic Acid Adsorption Of Synthetic Drying Oils : Part Ii., Isadore Nathan Cooperman Jun 1949

Semi-Micro Combustion, Solvent Extraction, And Oleic Acid Adsorption Of Synthetic Drying Oils : Part Ii., Isadore Nathan Cooperman

Electronic Theses and Dissertations

The rates of oxidation, solvent solubility, and oleic acid adsorption, of natural and synthetic drying oil films were studied by semi-micro analytical methods.

This thesis consists of three phases:

I. Ultimate analysis to determine the oxygen content of a film at specific time intervals.

II. Extraction of the films to determine their solvent solubility as a function of time.

III. Oleic acid adsorption to get a correlation of the structure of the film.

Seven materials were examined:

A. Glyceryl Trilinoleate

B. Pentaerythritol Tetralinoleate

C. Pentaerythritol Oleate

D. Pentaerythritol Oleic Acid Long Oil Alkyd

E. Dipentaerythritol Linoleate

F. Pentaerythritol Linoleate

Glyceryl …