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Articles 68641 - 68670 of 69077
Full-Text Articles in Physical Sciences and Mathematics
Age Hardening Of Silver-Platinum Alloys, Robert A. Wilson
Age Hardening Of Silver-Platinum Alloys, Robert A. Wilson
Bachelors Theses and Reports, 1928 - 1970
The alloy system selected for study was the binary alloy of platinum and silver. An examination of the various silver alloy diagrams revealed that of several possible alloys, the silver platinum was the most suitable with regard to solubility.
Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran
Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran
Bachelors Theses and Reports, 1928 - 1970
The reclamation of metals from scrap is becoming increasingly important in the metallurgical industry. Copper, because it does not corrode readily and is electronegative to most common metals, is peculiarly adapted to reclamation.
Magnesium - Tellurium By Powder Methods, George Gale
Magnesium - Tellurium By Powder Methods, George Gale
Bachelors Theses and Reports, 1928 - 1970
Today considerable work is being done in the compressed metal powder field which is gradually obtaining prominence as a valuable branch of metallurgy. The mass of data, however, has led to many different ideas on the results of sintering.
The Geology And Ore Deposits Of Jardine, Montana, Wolter Duykers
The Geology And Ore Deposits Of Jardine, Montana, Wolter Duykers
Bachelors Theses and Reports, 1928 - 1970
The subject to be covered by this paper is based upon field study made during a six week stay at Jardine. The work began on June 19, 1937 and ended on July 31 of the same year.
Geology And Ore Deposits Of The Golden Messenger Mine, Lewis And Clark County, Helena, Montana., John C. Archibald Jr.
Geology And Ore Deposits Of The Golden Messenger Mine, Lewis And Clark County, Helena, Montana., John C. Archibald Jr.
Bachelors Theses and Reports, 1928 - 1970
The Golden Messenger Mine which is approximately twenty-three miles northeast of Helena, Montana, near York, on Trout Creek, has long presented several problems of both theoretical and practical interest.
A Rapid Determination Of Small Amounts Of Lead In Zinc, George T. Hanson
A Rapid Determination Of Small Amounts Of Lead In Zinc, George T. Hanson
Bachelors Theses and Reports, 1928 - 1970
This investigation, carried on in the metallurgical laboratories at the Montana School of Mines, was undertaken with the desire to work out a rapid method for the estimation, or the determination, of the amount of lead in zinc.
A Study Of The Organic Dye Nitrazine As An Indicator For Acid-Base Titration, Grace Nachod
A Study Of The Organic Dye Nitrazine As An Indicator For Acid-Base Titration, Grace Nachod
Chemistry Honors Papers
This 13 page thesis examines the organic compound nitrazine as an indicator in acid - base nitrations.
The Electrodeposition Of Manganese From Certain Aqueous Solutions., William C. Wallace
The Electrodeposition Of Manganese From Certain Aqueous Solutions., William C. Wallace
Bachelors Theses and Reports, 1928 - 1970
Manganese has been successfully electrodeposited from aqueous solutions in past years by several workers in electrochemical and electrometallurgical fields.
The present work was concerned, primarily, with investigation of electrodeposition from solutions which are commercially obtainable from the hydrometallurgical or pyrometallurgical treatment of the low grade manganese deposits of this country.
The Summation Of The Series X+X/4+X/9+...+X/N-+.., William J. Nee
The Summation Of The Series X+X/4+X/9+...+X/N-+.., William J. Nee
Bachelors’ Theses
The purpose of this thesis is to determine the sum of the series x+42/4+x3/9+x4/16+....xn/n2. In order to determine whether or not the series is summable, we must first find out if it is a convergent series and so the first part of this paper will deal with some of the tests of convergence. After this matter is settles, we shall select a value of x, in this case x=1 and determine the ∞∑/1 1/n2
The Geology Of The Southern Central Portion Of The Morrison Cave Area., Arthur Talpt
The Geology Of The Southern Central Portion Of The Morrison Cave Area., Arthur Talpt
Bachelors Theses and Reports, 1928 - 1970
Morrison Cave is located about 50 miles southeast of Butte, Montana. It was named after the man who discovered it. Later it was taken over by the State and renamed Morrison Cave State Park. Recently the government with the aid of the Civilian Conservation Corps has built a new road to the cave and has made the interior more accessible. The name of the cave is now Lewis and Clark Cavern National Monument.
Preparation Of Thianthrene, Eugene Alton Talley
Preparation Of Thianthrene, Eugene Alton Talley
Master's Theses
This work was begun in an attempt to study further the preparation of thianthrene from 2-dichlorobenzene and alkali sulfides. g_-Dichlorobenzene is a liquid by-product in the preparation of its solid isomer, E-dichlorobenzene, which is used extensively for controlling moths and peach tree borers. The study of the preparation of thianthrene from the liquid isomer was undertaken because the preparation might develop into a possible use for the large quantities available.
Thianthrene might be made from 2-dibromo- and 2-diiodo-benzene but these are not as cheap or as easily obtained as the dichloro derivative and were not used in this study various …
The Preparation Of Organosols, Wilfrid Francis White
The Preparation Of Organosols, Wilfrid Francis White
Master's Theses
No abstract provided.
The Catalytic Vapor-Phase Hydrolysis Of Benzene And Toluene, Clemens Raebel Maise
The Catalytic Vapor-Phase Hydrolysis Of Benzene And Toluene, Clemens Raebel Maise
Masters Theses
"The vapor-phase synthesis of organic compounds represents a new field of study which has attracted the attention of investigators only within recent years. However, wide interest is apparent in this field and several processes of commercial importance have already been developed. Hydrolysis is perhaps the newest of all the types of vapor-phase synthesis; the literature consists of little more than a few patents...The vapor-phase hydrolysis of benzene and toluene, therefore, presented an interesting possibility. These two hydrocarbons are considered very stable toward water in the liquid-phase. The purpose of this investigation was to determine to what extent their stability toward …
Louisiana Tertiary Bryozoa., James Holland Mcguirt
Louisiana Tertiary Bryozoa., James Holland Mcguirt
LSU Historical Dissertations and Theses
No abstract provided.
Origin Of The Cap Rock Of Louisiana Salt Domes., Ralph Emerson Taylor
Origin Of The Cap Rock Of Louisiana Salt Domes., Ralph Emerson Taylor
LSU Historical Dissertations and Theses
No abstract provided.
Corrosion Of Aluminum In Alkaline Solutions, George Oliver Doherty
Corrosion Of Aluminum In Alkaline Solutions, George Oliver Doherty
Bachelors’ Theses
Aluminum has been an important member of the metal group since its isolation about 100 years ago. It has sprung into prominence in the commercial field and in household use in the last thirty years. The metal is light, possesses good thermal and electrical conductivity and as an alloy with other metals takes on a surprising degree of strength.
The problem of producing aluminum cheaply enough to make it practical has finally been overcome to a great extent. It now remains to be seen just what further uses there are to which this new metal may be put. Aluminum may …
The Effects Of Certain Salts Upon The Saccharogenic Activity Of Three Typical Enzymes, George F. Gastler
The Effects Of Certain Salts Upon The Saccharogenic Activity Of Three Typical Enzymes, George F. Gastler
Electronic Theses and Dissertations
In a previous investigation carried out in these laboratories, Moxon and Franks (1), have shown the toxicity of sodium salts of selenium, vanadium, arsenic and tellurium toward the production of carbon dioxide during yeast fermentation of glucose. The toxicity of the salts occurred in the order given. In the same investigation (1), it was shown that sodium sulfide and sodium sulfite exert an accelerating effect.
Petrographic Analyses Of The Chepultepec Sandstones Of The Norris Reservoir Region, Tennessee, Chilton Eaton Prouty
Petrographic Analyses Of The Chepultepec Sandstones Of The Norris Reservoir Region, Tennessee, Chilton Eaton Prouty
Masters Theses
"The Norris Reservoir is located in northeastern Tennessee, in the Appalachian Valley. It includes all or portions of Anderson, Campbell, Claiborne, Granger, Knox, and Union counties. The area is shown by the map of Pate I. It is approximately thirty-five miles long in a northeast-southwest direction and about eighteen to twenty miles wide, in a northwest-southeast direction. The area is bounded on the northwest by the Cumberland escarpment and on the southeast by Clinch Mountain. The other boundaries are arbitrarily drawn near the town of Clinton to the southwest and near Tazewell to the northeast"--Introduction. Location and Nature of the …
Oil And Gas Resources, Jackson County, Missouri, Joseph Robinson Clair
Oil And Gas Resources, Jackson County, Missouri, Joseph Robinson Clair
Masters Theses
"The oil and gas production in Jackson County, though rather small, is nevertheless of considerable economic importance. A portion of the county has been rather thoroughly developed but the remainder has had little prospecting. In order to aid further development in the region the Missouri Geological Survey engaged in the mapping of all the known wells in the county as a basis for preparing a structural contour map of the area. In addition, a member of the Survey staff is stationed permanently in Kansas City to give assistance to the operators in the region and to collect the logs of …
The Construction And Use Of An Apparatus For The Measurement Of Dipole Moments By The Solution Method, William Lankford Duncan
The Construction And Use Of An Apparatus For The Measurement Of Dipole Moments By The Solution Method, William Lankford Duncan
Dissertations, Theses, and Masters Projects
No abstract provided.
The Paleozoic Stratigraphy Of Lorain County, Ohio, Edwin Hugo Wenberg
The Paleozoic Stratigraphy Of Lorain County, Ohio, Edwin Hugo Wenberg
Honors Papers
During the course of the school year 1936-37 spent at Oberlin, which is situated near the center of Lorain County, Ohio, the writer had the opportunity to study the outcrops and to gather records of wells in this area.
A study of the strata of this county is confusing because the same rocks have been described under different formational names. Originally many of these strata were traced northward from type sections in central Ohio or westward from type sections near Cleveland. At a later date many of the strata were reclassified and assigned to formations which had been traced westward …
A Mechanical Analysis Of The Oriskany Sandstone In Northwestern Virginia, Selma G. Hirsh
A Mechanical Analysis Of The Oriskany Sandstone In Northwestern Virginia, Selma G. Hirsh
Honors Papers
The primary purpose of this paper is to present specific data as a means of explaining the sedimentation conditions at the time of deposition of the Oriskany Sandstone. The data were obtained through the use of laboratory methods upon specimens taken from several outcrops in the vicinity of Monterey, Virginia (see Darton's U.S.G.S. folio No. 51). In addition to the presentation of objective results, the author has attempted to make tentative interpretations of them, based primarily upon textural and shape analysis of the sediment. The writer realizes that the investigation is inadequate in many respects, due to lack of time …
The Occurrence And Distribution Of Selenium In North Dakota Ground Waters, Hjalmer V. Peterson
The Occurrence And Distribution Of Selenium In North Dakota Ground Waters, Hjalmer V. Peterson
Theses and Dissertations
No abstract provided.
A Brief Consideration Of The Different Methods Of Integration, Donald Golden
A Brief Consideration Of The Different Methods Of Integration, Donald Golden
Master's Theses
Any student of mathematics is familiar with the importance of the process of integration. Integration is as fundamental to analysis as the basic principles of the number theory are to arithmetical calculation. Some of the common applications of integration are, finding the distance a falling body has travelled during a particular interval of time; to determine the equation of a curve, given different conditions (such as slope of the curve equal numerically to one-half the abscissa, or some similar problem); motion of a projectile; motion in a resisting medium; finding areas and volumes of revolution; length of a curve; areas …
The Preparation Of Glucuronic Acid From Gum Acacia, Mary Laurissa Felix
The Preparation Of Glucuronic Acid From Gum Acacia, Mary Laurissa Felix
Bachelors’ Theses
Initial interest in the preparation of glucuronic acid from gum acacia was prompted by several reasons. Being interested in both the chemical and biological fields, the subject of glucuronic acid made a strong appeal. Although glucuronic acid was discovered over fifty years ago, its position in physiology remained until recently undefined. Now, however, it seems fairly certain that this compound is closely related to carbohydrate metabolism and plays an important role as a detoxicating agent in the body.
The laboratory preparation of glucuronic acid is still one of the important problems of chemistry. Our present knowledge of its synthesis and …
The Asymptotic Development Of A Special Type Of Power Series, David A. Lawson
The Asymptotic Development Of A Special Type Of Power Series, David A. Lawson
Mathematics & Statistics ETDs
It is the purpose of this study to consider certain aspects of the theorem due to Walter B. Ford, may be considered as a function g(w) of the complex variable w=x+iy and as such satisfies two conditions chosen by the author.
A Chemical And Biological Study Of The Waters Of Elephant Butte Reservoir As Related To Fish Culture, John Greenbank
A Chemical And Biological Study Of The Waters Of Elephant Butte Reservoir As Related To Fish Culture, John Greenbank
Chemistry and Chemical Biology ETDs
The purpose of this preliminary survey was to determine, in so far as was possible in the limited time that was available, the general suitability of the waters of the reservoir for fish life, and to make such recommendations for future fish culture policy as seemed to be advisable. AN unpublished report of this preliminary survey was written by Dr. Hazzard.
Public Water Supplies Of New Mexico, Kenneth F. Priest
Public Water Supplies Of New Mexico, Kenneth F. Priest
Chemistry and Chemical Biology ETDs
Distribution of population in State. The estimated population for the State of New Mexico for the year 1930 was 423,300. A close observation of the population centers shows them to be scattered over a wide range of territory. The largest city, Albuquerque, has approximately 26,000 citizens. The next sites, according to the 1930 count, are three in number, Santa Fe, Roswell, and Clovis. The remaining population including rural districts do not number over eight thousand people.
Heats Of Solution In Liquid Ammonia, Walter A. Denison
Heats Of Solution In Liquid Ammonia, Walter A. Denison
Honors Theses
Liquid ammonia has properties which make it useful and interesting for making chemical thermodynamic investigations, as had been pointed out by Franklin, and Kluge.
Conductivity Measurements In Silicic Acid Gels During Setting, Joseph R. Ciaranello
Conductivity Measurements In Silicic Acid Gels During Setting, Joseph R. Ciaranello
Honors Theses
During the course of extensive investigations of the properties and behavior of silicic acid gels, the study of the conductivity of these substances was begun in the hope that data could be assembled to throw some light on the mechanism of gelation. The experiments to be described are a continuation of the work on conductivity carried out at Union College under the direction of Dr. C. B. Hurd. H. Swanker (1), in 1932, making use of a Wheatstone bridge at 1000 cycles, failed to find any change in conductivity, but R. W. Gurry (2), using refined methods, was able to …