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Articles 68491 - 68520 of 69081
Full-Text Articles in Physical Sciences and Mathematics
The Electroformation Of Lithium-Lead Alloys From Molten Electrolytes, Thomas Prater
The Electroformation Of Lithium-Lead Alloys From Molten Electrolytes, Thomas Prater
Bachelors Theses and Reports, 1928 - 1970
An attempt was made to make lead-lithium alloys by electrodeposition of lithium using a molten bath and a molten lead cathode.The variables taken into consideration were: composition of the melt, temperature of the melt, and current density. The purpose of changing these factors was to determine what effect each had on the current efficiency.
Zinc Relationships Of Some Utah Soils, Wilford Derby Laws Jr.
Zinc Relationships Of Some Utah Soils, Wilford Derby Laws Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Recent reports from many parts of the United States indicate that the so-called zinc-deficiency disease is wide spread. It affects some varieties of trees in some areas and all varieties in other areas, and occurs from Florida westward to the Pacific coast and northward to the Canadian line. Although the disease is more prevalent in trees, it is also known to affect annual plants.
A recent survey of Utah orchards shows a wide-spread occurrence of little-leaf, a zinc deficiency disease, in fruit trees. The disease was found to be common on the upper sandy soils between Ogden and Salt Lake …
The Geology And Ore Deposits Of The Ermont Mines, James L. Kelly
The Geology And Ore Deposits Of The Ermont Mines, James L. Kelly
Bachelors Theses and Reports, 1928 - 1970
The Ermont Mines are located sixteen miles northwest of Dillon, Montana, in section 35 of T.6S., R.11W. This is in the central part of Beaverhead County. They are considered to be in the Argenta mining district, the town of Argenta lying three miles to the northeast.
A Generating Voltmeter Of Wide Sensitivity Range For Measuring Atmospheric Potential Gradients, Herschel Roy Snodgrass
A Generating Voltmeter Of Wide Sensitivity Range For Measuring Atmospheric Potential Gradients, Herschel Roy Snodgrass
Physics & Astronomy ETDs
The specific need for the present instrument arose out of a consideration of the significant results that might be obtained through a coordination of reliable data on potential gradients under various cloud formations with the accompanying fast motion cloud photographs. The characteristics most desired were: (1) the continuous measurement of both the magnitude and polarity of the surface potential gradients over a wide range of values, from normal fair weather gradients of 0 to +300 volts per meter to thunderstorm gradients, possibly as high as 200,000 volts per meter; (2) easy portability; (3) resistance to harmful effects from rain, dust, …
The Concentration Of Scheelite From The Gold Concentrates Of The Jardine Mining Company, John H. Huxley
The Concentration Of Scheelite From The Gold Concentrates Of The Jardine Mining Company, John H. Huxley
Bachelors Theses and Reports, 1928 - 1970
The Purpose of this thesis was to investigate the possibility of concentrating scheelite from Wilfley table gold concentrates from the mill of the Jardine Mining Company; and to determine whether such concentration is economically feasible and the product of sufficiently high grade to meet commercial specifications for such a product.
The Testing And Concentration Of Lake Chelan Copper Ore, Thor W. Johnson
The Testing And Concentration Of Lake Chelan Copper Ore, Thor W. Johnson
Bachelors Theses and Reports, 1928 - 1970
The geologic history of the Holden area and Lake Chelan district is an integral part of the history of the Cascade Mountain Range. The structure is very complex and the rocks, which have been subjected to intense metamorphic action, are portions of a roof pendant and consists of gneisses, schists and quartzites that are often difficult to correlate.
Ground Water In The Lake Basin Field And Adjacent Area, Herman Neibauer
Ground Water In The Lake Basin Field And Adjacent Area, Herman Neibauer
Bachelors Theses and Reports, 1928 - 1970
This thesis consists of studying the stratigraphic and structural features of the Lake Basin Field and an adjacent area with special emphasis upon the ground water conditions present.
Gas Analysis By Absorption, Albert D. Mcmahon
Gas Analysis By Absorption, Albert D. Mcmahon
Bachelors Theses and Reports, 1928 - 1970
There is practically only one method of gas analysis. This was worked out many years ago by Bunsen, Hempel, and Winkler and consists in the successive absorption with different chemicals of the various constituents of the gas. The only improvement to this method is the oxidation and combustion of different components of a mixture followed by absorption.
Relationships Of Manganese Minerals In The Butte District, Charles F. Parent
Relationships Of Manganese Minerals In The Butte District, Charles F. Parent
Bachelors Theses and Reports, 1928 - 1970
The use of manganese in the steel industry as a deoxidizing and desulfidizing agent makes it a necessity in modern industry, while the various alloy steels using manganese for the quality of toughness are also indispensable. Manganese is also used in the manufacture of such various articles as battery cells, paints and glass.
Pegmatites In Southwestern Montana, Ora Rostad
Pegmatites In Southwestern Montana, Ora Rostad
Bachelors Theses and Reports, 1928 - 1970
Little has been written on pegmatites in Montana except in conjunction with reports on mining districts. This subject was chosen as a senior thesis to see what facts could be ascertained regarding pegmatites alone, and an attempt has been made by the writer to assemble all written material on pegmatites in southwestern Montana, and to study specimens from those that could be reached or from which specimens were available.
A Study Of The Concentration Of A Low-Grade Manganese Ore From The Ennis District, John B. Schuettenhelm
A Study Of The Concentration Of A Low-Grade Manganese Ore From The Ennis District, John B. Schuettenhelm
Bachelors Theses and Reports, 1928 - 1970
The purpose of the investigation was to determine the most effective means of concentrating the manganese in the ore. The study was that of identification of the minerals present. This showed the presence of oxides of manganese and iron, and carbonates of calcium and manganese. Methods of investigation were planned to determined whether the ore could be concentrated effectively by gravity concentration methods.
Oil And Gas Production Methods In Montana, Edgar A. Scholz
Oil And Gas Production Methods In Montana, Edgar A. Scholz
Bachelors Theses and Reports, 1928 - 1970
Montana's oil and gas industries aggregate a gross income of over 12,000,000 annually to the state. Oil and gas fields have been thoroughly discussed in literature as to geology, location, production and future possibilities. The specific object of this report has been to compile a comprehensive study of the production methods as they occur.
Cambrian Stratigraphy In The Northern Wasatch Region, George Burke Maxey
Cambrian Stratigraphy In The Northern Wasatch Region, George Burke Maxey
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
An exhaustive field study of the Cambrian stratigraphy of the northern Wasatch region indicates that in addition to the Blacksmith Fork section there are two complete and better exposed middle and upper sections. Several other good exposures of the lower Middle Cambrian section have been studied in detail. The Spence shale is found to be a member low in the Langston, not the basal member of the Ute. Relative ages of the Spence shale and Ptarmigania faunas have been determined. Other Cambrian faunal zones have been discovered and are discussed. Paleontologic evidence suggests that the Nounan formation is of Upper …
The Corrosive Effect Of Sodium Acid Sulfite Solution Upon Stainless Steel As Compared With Carbon Steel And Cast Iron, Arthur John Haug
The Corrosive Effect Of Sodium Acid Sulfite Solution Upon Stainless Steel As Compared With Carbon Steel And Cast Iron, Arthur John Haug
Bachelors’ Theses
Tilghman, in 1866, discovered the fundamental principle of the sulfite process - the treatment of wood with a solution of sulfur dioxide gas in water, with the addition of an alkaline bisulfite. However, he was unable to pursue this discovery because of the difficulty of obtaining acid resisting materials.
Melting Point Studies Of Binary Mixtures Of Barbowax 4000 And 1500 And Various Waxes In An Air Chamber, Arnold P. Feider
Melting Point Studies Of Binary Mixtures Of Barbowax 4000 And 1500 And Various Waxes In An Air Chamber, Arnold P. Feider
Bachelors’ Theses
While selecting the subject of research for this thesis the author had the opportunity to consult several thesis conducted at Marquette University on the melting points of waxes.
The Preparation Of Some Typical Organoboron Compounds, Glen David Barbaras
The Preparation Of Some Typical Organoboron Compounds, Glen David Barbaras
Bachelors’ Theses
Organoboron compounds have long been known, the first being prepared by Frankland as early as 1862. No particular interest in these compounds was aroused, how ever, because of the difficulty and expense of their preparation as well as their extreme instability. From time to time further attempts at their preparation were made and a few reactions were ob served. With the rise of modern electronic theories of chemical combination, however, organoboron compounds were discovered to exhibit properties and undergo reactions which would substantiate these theories. Consequently, since 1936 possibly over a hundred of these compounds of many different types have …
Families Of Circles, Mary Olive Norman
A Discussion Of Sulfanilamide And Related Compounds, E. Curtis Leuallen
A Discussion Of Sulfanilamide And Related Compounds, E. Curtis Leuallen
Chemistry Honors Papers
This 34 page thesis discusses the history of sulfanilamide as well as its preparations, derivatives and uses as a treatment for a variety of illnesses.
A Biochemical Study Of The Egg Yolk Discolorization Produced By Feeding Hens Cottonseed Meal., Albert Donald Swensen
A Biochemical Study Of The Egg Yolk Discolorization Produced By Feeding Hens Cottonseed Meal., Albert Donald Swensen
LSU Historical Dissertations and Theses
No abstract provided.
The Preparation And Properties Of Some 1-Alkyl-Cyclopentanols And Their Derivatives., Crawford Reid Mclellan
The Preparation And Properties Of Some 1-Alkyl-Cyclopentanols And Their Derivatives., Crawford Reid Mclellan
LSU Historical Dissertations and Theses
No abstract provided.
Geology Of Holmes And Washington Counties, Florida., Robert O. Vernon
Geology Of Holmes And Washington Counties, Florida., Robert O. Vernon
LSU Historical Dissertations and Theses
No abstract provided.
Conodonts From The Marathon Basin, Brewster County, Texas, Roy William Graves Jr.
Conodonts From The Marathon Basin, Brewster County, Texas, Roy William Graves Jr.
Masters Theses
"Conodonts were discovered in the limestones of the Marathon region in the Big Bend country, Brewster County, Texas, as a result of field work during the summer of 1939. This was not the first known occurrence of these fossils from this region, however, as King earlier mentioned the occurrence of conodonts in siliceous shales of Devonian age. The discovery of conodonts in the Ordovician and Pennsylvanian limestones of the area had its inception in the attempt to determine whether the Dimple limestone (lower Pennsylvanian) or Maravillas limestone (upper Ordovician) was involved in a fault that was being mapped. These limestones …
The Removal Of Chlorides And Sulfates By Synthetic Resins., Lucille Grace Boudreaux
The Removal Of Chlorides And Sulfates By Synthetic Resins., Lucille Grace Boudreaux
LSU Historical Dissertations and Theses
No abstract provided.
Studies On The Quantitative Analysis Of Rhenium And Its Occurrence In The Products Of Molybdenite Processing, Walter Keith Dean
Studies On The Quantitative Analysis Of Rhenium And Its Occurrence In The Products Of Molybdenite Processing, Walter Keith Dean
Masters Theses
"There is at the present time no commercially developed source of the metal rhenium in the United States. Since this metal is known to exist in molybdenite, it was felt that a study of the products of the metallurgical processing of this mineral might reveal a source of rhenium that could e developed. The Climax Molybdenum Co. provided a number of samples from their smelter at Langloth, Pennsylvania. Although an improved method for the quantitative estimation of rhenium was recently published, its accuracy was not high and the procedure exacting and time-consuming. These combined factors led to the selection of …
A Study Of A Carbonaceous Gold Ore, James S. Huckaba
A Study Of A Carbonaceous Gold Ore, James S. Huckaba
Bachelors Theses and Reports, 1928 - 1970
The presence of graphite in the ore of the Missouri-McKee Mine has made its treatment by the methods now used quite unsatisfactory. The study was undertaken to develop a new flow sheet which would give a high recovery and yet be economical enough to handle low grade material.
Interpolation For The Median In A Frequency Distribution, Paul Cox
Interpolation For The Median In A Frequency Distribution, Paul Cox
Mathematics & Statistics ETDs
It is the purpose of this study to discuss completely the median of a frequency distribution: first, by showing clearly what a median is; second, by showing the present and possible future applications for the median in the field of mathematical statistics; third, by taking all methods for interpolating for the median which have been advocated in the literature, or which may not have been advocated to date but appear plausible, and discuss these methods as to the way they are used, the plausibility of their use, and the accuracy obtained by their use.
A Geological Report On An Area Five Miles Southeast Of Renova, Montana, And On An Area Seven Miles South Of Jefferson Island, Montana, Herman Neibauer
A Geological Report On An Area Five Miles Southeast Of Renova, Montana, And On An Area Seven Miles South Of Jefferson Island, Montana, Herman Neibauer
Bachelors Theses and Reports, 1928 - 1970
This trip was conducted to give those students working for their respective degrees an excellent opportunity to work under actual field conditions. A total of three weeks was taken to complete the required work. Two weeks were spent in the field gathering data, and making maps, and the last week was spent in the drawing room at the college preparing the final map.
The Unit Plan Versus The Textbook Plan Of Teaching Arithmetic To Seventh And Eighth Grade Pupils, Arthur P. Harvey
The Unit Plan Versus The Textbook Plan Of Teaching Arithmetic To Seventh And Eighth Grade Pupils, Arthur P. Harvey
Master's Theses
The present day trends in education seem to indicate the desirability of its becoming more and more a socialized education. This trend will no doubt have a more significant bearing on some subjects or studies in the school curriculum than on other subjects. The Kansas public elementary schools have recently adopted a Unit Program in School Studies, which includes history, civics, geography, science, and hygiene in an attempt to contribute better to the socialized idea. This Unit Program, however, does not make direct provision for English, spelling, arithmetic, and penmanship .Naturally, perhaps, comes the question to many teachers of why …
A Study Of The Effect Of Certain Variables On The Titration Of Silicic Acid, James S. Walker
A Study Of The Effect Of Certain Variables On The Titration Of Silicic Acid, James S. Walker
Honors Theses
If a solution of sodium silicate is titrated with a strong acid, using methyl orange as an indicator, a very different end point is obtained from that obtained using phenolphthalein as an indicator. This difference is well established as being due to the ionization of silicic acid, either acidically or basically after the soda in the silicate has been neutralized by the strong acid. It was the intention of the experimenter to study this acid from the standpoint of the effect of certain variables, in the titration of sodium silicate with a strong acid, on the end points obtained.
The Preparation Of Symnetrical Tri Aryl Phosphines, George Brandes
The Preparation Of Symnetrical Tri Aryl Phosphines, George Brandes
Honors Theses
The purpose of this research project was the preparation of pure, symmetrical aromatic phosphines. These were to be used in dipole moment measurements for the calculation of the spatial arrangement of the carbon-phosphorus valence bond in the phosphines.