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Articles 289471 - 289500 of 292728
Full-Text Articles in Entire DC Network
The Pleistocene Geology Of The Middle ·Portion Of The Elkhorn River Valley, W. D. Frankforter
The Pleistocene Geology Of The Middle ·Portion Of The Elkhorn River Valley, W. D. Frankforter
University Studies (University of Nebraska) (1888–1984)
The present report is a physiographic and paleontologic approach to the Pleistocene history of a portion of the Elkhorn River Valley in parts of Dodge, Cuming and Stanton counties in northeastern Nebraska. The area is important for correlation of deposits between the glacial and periglacial regions. Some of the critical stratigraphic units used for correlation in the Pleistocene of these regions are present in close association with the tills and contain fossils which make possible reliable statements on contemporaneity of deposits. The subsequent geologic history and present physiographic expression of this area have been greatly controlled and influenced by the …
Deamination Of Certain Toluidines Through Diazotization And Decomposition Of The Diazonium Salt With Alcohol In The Presence Of Copper, Ralph E. Schaeffer
Deamination Of Certain Toluidines Through Diazotization And Decomposition Of The Diazonium Salt With Alcohol In The Presence Of Copper, Ralph E. Schaeffer
Bachelors’ Theses
Historically credit is given to Johann Peter Griess tor the discovery or diazo compounds in 1858 (8). Six years later, Griess reported that diazonium salts of benzene yield benzene when boiled with alcohol (31). At first it was thought that only hydrocarbons were formed when diazonium salts of benzene were boiled with alcohol. However, in 1870 ethyl ethers were found to be products or the reaction between diazotized chlorotoluidines and ethyl alcohol (31). Since that time much attention has been given to the factors influencing the formation of hydrocarbons or ethers as a result or the reaction between diazonium salts …
Comparison Of Worts Prepared By Action Of Malted Barley On Various Flours And Starches, Charles J. Doria
Comparison Of Worts Prepared By Action Of Malted Barley On Various Flours And Starches, Charles J. Doria
Bachelors’ Theses
The object of this thesis to compare the yields of soluble solids, reducing sugars, and proteins in worts prepared by the action of malted barley on various flours and starches. Mashes were prepared and analyses were made on worts prepared from the following:
1. White Wheat Flour
2. Whole Wheat Flour
3. Potato Flour
4. Potato Starch
5. Sweet Potato Flour
6. Oat Flour
7. Tapioca Flour
8. Corn Germ
9. Corn Germ Meal
The results obtained are presented in tabular form as well as graphically for ease in making comparisons. In addition, besides presenting the results calculated on an …
Test 447: International Td-24, Nebraska Tractor Test Lab
Test 447: International Td-24, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Czarina Mine, Butte, Montana, Prodyot K. Das
Czarina Mine, Butte, Montana, Prodyot K. Das
Bachelors Theses and Reports, 1928 - 1970
The Czarina mine operated for a short time during the last Great War, lies in the southwestern corner of the Butte mining district of Montana. This area was worked during the extensive silver mining in Butte during the 1890's, and was prospected from time to time in later years. The orebody of the mine consists of fissure fillings of manganese mineral oxidized to a certain depth, in a fracture zone of the Boulder Batholith.
Test 446: International Td-18a, Nebraska Tractor Test Lab
Test 446: International Td-18a, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 445: International Td-14a, Nebraska Tractor Test Lab
Test 445: International Td-14a, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 444: Ford 8nan, Nebraska Tractor Test Lab
Test 444: Ford 8nan, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 443: Ford 8n, Nebraska Tractor Test Lab
Test 443: Ford 8n, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 442: Cockshutt 40, Nebraska Tractor Test Lab
Test 442: Cockshutt 40, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
An Investigation Of The Iodination Of P-Alkylphenols, Harold H. Gill
An Investigation Of The Iodination Of P-Alkylphenols, Harold H. Gill
Master's Theses or Doctor of Nursing Practice
The purpose of this investigation was to see if a series of the iodinated p-alkylated phenols could be prepared. These compounds would probably be of the type if substitution of a single iodine atom occurs. Substitution of two atoms of iodine would produce compounds of the type.
Mineralization Of The Bonanza Mine, H. M. Callaway
Mineralization Of The Bonanza Mine, H. M. Callaway
Bachelors Theses and Reports, 1928 - 1970
The Bonanza mine of the Emery mining district in Powell County is on the largest veins in the area, and is developed to a depth of 680 feet by an incline shaft following the dip of the structure. Sulfide ores carrying gold and silver values are mined throughout the area which is easily accessible by road from Deerlodge, Montana, ten miles west of the district.
A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties, Vincent H. Dreeszen
A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties, Vincent H. Dreeszen
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Montana Talc; Problems In Physical Properties, E. C. Armstrong
Montana Talc; Problems In Physical Properties, E. C. Armstrong
Bachelors Theses and Reports, 1928 - 1970
General information on talc, including foreign and United States occurrences, origin, and uses is covered. Montana deposits are discussed in greater detail as to location, geology, mineralogy, and mining. Studies of talc by petrographic and x-ray methods and an experiment to determine the porosity are described and discussed.
Importance Of Unconformities To Oil Occurrence In Montana, Robert E. Evenson
Importance Of Unconformities To Oil Occurrence In Montana, Robert E. Evenson
Bachelors Theses and Reports, 1928 - 1970
Although the majority of geologic structures in Montana have been tested in the search for petroleum, only a few have been found to contain commercial quantities of either oil or gas, and with each successive dry hole, producers are becoming more and more wary of investing capital in new wells located on structural features alone. It is apparent that if new oil and gas fields are to be found in Montana, exploration must be done on the basis of something other than structure, or combined with structure.
Fauna Of The Pilgrim Formation Of The South Boulder Creek Area In Southwestern Montana, John T. Eastlick
Fauna Of The Pilgrim Formation Of The South Boulder Creek Area In Southwestern Montana, John T. Eastlick
Bachelors Theses and Reports, 1928 - 1970
This paper, a study of the fauna of the Pilgrim formation at South Boulder Creek in southwestern Montana, represents a laboratory study of the fossil specimens collected by Dr. Alvin Hanson during the summer of 1949. The scope of investigation includes identification and classification of the faunas, their stratigraphic relationship and zonal subdivisions.
Foraminifera From The Colorado Shale Near Sunburst, Montana, Frank R. Reynolds
Foraminifera From The Colorado Shale Near Sunburst, Montana, Frank R. Reynolds
Bachelors Theses and Reports, 1928 - 1970
One of the many secrets which planet Earth has jealously kept from its inhabitants is the microscopic fossil form known as the foraminifer. It hides in common shale, awaiting the patient and painstaking searcher. In furthering the study of the foraminifera of the Colorado group of formations in Northern Montana, the United States Geological Survey has collected several suites of shale samples from the Sunburst Dome, five to ten miles south of the Canadian border and twenty-five miles north of the city of Shelby, Montana.
A Study Of The Effect Of The Maximum Melt Temperatures Upon The Degree Of Supercooling Of Gallium, Wilfred E. Nagel
A Study Of The Effect Of The Maximum Melt Temperatures Upon The Degree Of Supercooling Of Gallium, Wilfred E. Nagel
Bachelors Theses and Reports, 1928 - 1970
If, in a system at a given temperature, there should occur a decrease in free energy and this decrease does not take place, then the resulting condition of the system is termed supercooling. A common example of the phenomenon is found in the liquid-to-solid transition of many substances, when the temperature of the liquid may be lowered below its freezing point without solidification. Similar phenomenon occurs in the gas-to- liquid, gas-to-solid, and polymorphic transformations.
Fauna And Stratigraphy Of The Meagher Formation At Three Localities In Southwestern Montana, William J. Van Matre
Fauna And Stratigraphy Of The Meagher Formation At Three Localities In Southwestern Montana, William J. Van Matre
Bachelors Theses and Reports, 1928 - 1970
In the past 75 years, the scenic area about the headwaters of the great Missouri River has attracted the attention of many leading stratigraphers and paleontologists; for in this area bountiful outcrops of Paleozoic fossil horizons are available for study and correlation.
Mottling In The Meagher Limestone, Ronald J. White
Mottling In The Meagher Limestone, Ronald J. White
Bachelors Theses and Reports, 1928 - 1970
The middle Cambrian Meagher limestone of southwest Montana is characterized by mottled members that are finely crystalline in the tan part and microcrystalline in the dark matrix. As seen in the literature, similar mottled limestones are thought to be an arrested stage in the dolomitization, or alteration of limestones.
A Study Of The Divide-Dewey Contact Of The Boulder Batholith, Francis M. Young
A Study Of The Divide-Dewey Contact Of The Boulder Batholith, Francis M. Young
Bachelors Theses and Reports, 1928 - 1970
The batholith is dated as Paleocene or early Eocene. The rocks of the batholith in this area are classified as ranging from quartz-granodiorite to granodiorite. Variation in mineral content causes a chance in color tone from light to dark gray. swarms of inclusions occur in the igneous rock near the contact.
Foraminifera Of The Colorado Shale At Fort Benton, Montana, Robert E. Willson
Foraminifera Of The Colorado Shale At Fort Benton, Montana, Robert E. Willson
Bachelors Theses and Reports, 1928 - 1970
Shale is known to be a source-bed for oil, and the Colorado shale which is over 2000 feet thick in places may well be the source for the oil which is now accumulated in the included or closely associated sandstones. A thorough study of the fossil content may not only be helpful in correlation of Cretaceous sediments, but it likewise may be the starting point for studies -which could eventually lead to the discovery of unknown mineral deposits.
Periodic Precipitation In Capillaries, James A. Magerl
Periodic Precipitation In Capillaries, James A. Magerl
Bachelors’ Theses
Work on this problem was undertaken because of interest in periodic precipitation. It is hoped that this thesis will be able to report on a few of the substances not previously investigated that will precipitate periodically in capillaries.
The Rate Of Saponification Of Ethyl Esters Of Aliphatic Acids, Richard H. Sanborn
The Rate Of Saponification Of Ethyl Esters Of Aliphatic Acids, Richard H. Sanborn
Bachelors’ Theses
An ester may be defined as the reaction product of an acid and an alcohol. Eaters are formed by both mineral and organic acids. The esters of the mineral acids differ widely in their physical and chemical properties because in general there is little similarity between the mineral acids. A different situation exists with the organic acid esters. These organic acids exist in groups, called homologous series, the difference between the individual acids being only the number of carbon atoms in the acid and the configuration of the carbon chain. The properties of these acids change slowly as the series …
The Coexistence Of Eight Liquid Phases, Herbert A. Goeden
The Coexistence Of Eight Liquid Phases, Herbert A. Goeden
Bachelors’ Theses
For years chemists have been attempting to produce multiple immiscible liquid phase systems. The author has discovered a system of eight liquid phases in equilibrium. The eighth layer is a silicone oil. In order to utilize the silicone oil it was necessary to change two of the seven phases previously recorded.
The Coexistence Of Eight Liquid Phases, Herbert A. Goeden
The Coexistence Of Eight Liquid Phases, Herbert A. Goeden
Bachelors’ Theses
For years chemists have been attempting to produce multiple immiscible liquid phase systems. The author has discovered a system of eight liquid phases in equilibrium. The eighth layer is a silicone oil. In order to utilize the silicone oil it was necessary to change two of the seven phases previously recorded.
Soft X-Rays, William F. Roherty
Soft X-Rays, William F. Roherty
Bachelors’ Theses
Traditionally, radiation of those wavelengths produced by a potential of from 2 to 25kv. has been classified as "Grenz" or "soft" x-rays. The peculiar property of this radiation is its low penetrating power. While being transparent to more energetic radiation, animal tissue and similar materials are sufficiently opaque to Grenz rays as to be studied in detail. Since the radiation is of the continuous type, it can be made soft enough to reveal any object, providing, of course, that the tube window and object medium be not opaque. Soft x-rays are produced in exactly the same manner as others, except …
Certain Coordination Compound Of The Element Thallium, David Albert Hill Roethel
Certain Coordination Compound Of The Element Thallium, David Albert Hill Roethel
Bachelors’ Theses
While pursuing courses at Marquette University, my curiosity was constantly piqued by that group of elements classified as the rarer elements. Because of its somewhat unusual properties, thallium in particular aroused my interest and I decided that I should like to investigate the element further to my own satisfaction. While thallium in all its ramifications has been studied at one time or another, comparatively little work has been done upon the coordination compounds that the element forms. In 1909 a German chemist, Gewecke, did a limited amount of work with these coordination compounds but since then very little has been …
Statistical Evaluations Of Copper Determination, Waldemar A. Rosenthal
Statistical Evaluations Of Copper Determination, Waldemar A. Rosenthal
Bachelors’ Theses
In the field of applied Analytical Chemistry, where the amount of material is continually being determined, it is valuable to know whether or not the particular method in use is both accurate and precise. Basic course work in college provided the author an appreciation of numerical facts, but there always remained unanswered questions as to how these numerical facts could be employed to best represent the correct results. The difficulties were resolved by this thesis which will show how the evaluation of numerical data was considered with reference to the method used in determining the amount of copper present in …
Statistical Evaluation Of Laboratory Data Obtained From Two Methods Of Volumetric Analysis Of Titanium Compounds, Louis S. Winter
Statistical Evaluation Of Laboratory Data Obtained From Two Methods Of Volumetric Analysis Of Titanium Compounds, Louis S. Winter
Bachelors’ Theses
Titanium at last has entered the sphere of scientific practicality and general usefulness. It has overcome its position as an orphan of chemical interest and has been showered with the foistings of many industries. With this in mind, it is soon evident that a rapid and feasible system of analysis must be set up. Titanium presents a number of problems in the field of analytics, which are seldom, if ever, encountered when dealing with the commoner elements as iron, copper and tin. The purpose here is to study two methods of determination from the many which chemists have suggested and …