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Articles 90661 - 90690 of 91458
Full-Text Articles in Entire DC Network
Volume Tables For Connecticut Hardwoods, Walter H. Meyer, Raymond Kienholz
Volume Tables For Connecticut Hardwoods, Walter H. Meyer, Raymond Kienholz
Yale School of the Environment Bulletin Series
No abstract provided.
A Study Of Deep-Seated Domes Of South Louisiana., William Edwin Wallace
A Study Of Deep-Seated Domes Of South Louisiana., William Edwin Wallace
LSU Historical Dissertations and Theses
No abstract provided.
The Decomposition Of Isopropyl Chlorocarbonate., Edgar Lattimore Compere
The Decomposition Of Isopropyl Chlorocarbonate., Edgar Lattimore Compere
LSU Historical Dissertations and Theses
No abstract provided.
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Bachelors Theses and Reports, 1928 - 1970
The ore investigated in this thesis is a zinc-copper-lead ore. Microscopic analysis of this complex sulphide ore showed it to contain pyrite, sphalerite, arsenopyrite, galena, chalcopyrite, tetrahedrite, and covellite, with quartz as the gangue constituent.
An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson
An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to attempt to find some means of increasing the effective porosity and permeability of the producing sands of the Cut Bank Oil Field, with the hope that thereby the ultimate recovery of petroleum from this field may be increased. Although the percentage increase in production thus effected would undoubtedly be small, it would represent a substantial volume of petroleum in view of the great quantity of oil and gas present in this field.
The Monadnock Volume 17, Number 2, May 1943, Clark University Geographical Society
The Monadnock Volume 17, Number 2, May 1943, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 17, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
A Suggested Method For The Measurement Of Unsaturation In Organic Compounds By Means Of A Hydrogen Number, Richard Roberts
A Suggested Method For The Measurement Of Unsaturation In Organic Compounds By Means Of A Hydrogen Number, Richard Roberts
Bachelors’ Theses
The measurement of unsaturation in organic compounds are commonly expressed in terms of an iodine number, but as this value is not trustworthy in a number of cases, it has been suggested by earlier worker that an indication of unsaturation could be obtained by the quantitative hydrogenation of a compound and expressing the result in terms of a hydrogen number. Although such determinations have been previously made, usually at elevated temperatures and pressures, it is the purpose of this work to carry out the hydrogenation at room temperature and atmospheric pressure. For purposes of comparison, determinations will be made at …
Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell
Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell
Bachelors Theses and Reports, 1928 - 1970
Spectrographic analysis of limestones as a possible method of correlation of geologic formations is an altogether new line of investigation. As far as known the only previous work consists of a few analyses made by Fred Lines in his bachelor thesis work at Montana School of mines in the spring of 1942.
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
Bachelors Theses and Reports, 1928 - 1970
In studying the Cut Bank field and its numerous wells, it is found that dry holes are surrounded by producing wells, and also that the field as a whole is very irregular; water, oil, and gas zones in many cases following no definite pattern. In some instances, this phenomenon may be due to the lensing and thinning of the producing sands, but it is evident that this is not the only factor. Therefore, the controlling factors must be porosity and permeability.
The Kinetics And Mechanism Of The Alkaline Fading Of Iodo Phenol Blue - The Diacetone-Alcohol - Hydroxide Ion Reaction., Ralph Theodore Overman
The Kinetics And Mechanism Of The Alkaline Fading Of Iodo Phenol Blue - The Diacetone-Alcohol - Hydroxide Ion Reaction., Ralph Theodore Overman
LSU Historical Dissertations and Theses
No abstract provided.
Zeta Potentials., Joseph Ehrman Pryor
Zeta Potentials., Joseph Ehrman Pryor
LSU Historical Dissertations and Theses
No abstract provided.
Missourian Triticites Of The Northern Mid-Continent, Benjamin H. Burma
Missourian Triticites Of The Northern Mid-Continent, Benjamin H. Burma
Department of Earth and Atmospheric Sciences: Faculty Publications
The tendency toward fine discrimination in fusulinid species has made necessary standardization in their study. Theories and practices of fusulinid study are herein discussed in some detail. Four new species of Triticites are described from the Missouri series of the Pennsylvanian system; one species from the Virgil series and two froim the Missouri are redescribed, and the characters of the other five known Missourian species from the northern mid-Continent are shown in graphs, thus bringing together the known Missourian species. Finally consideration is given to the ontogeny and phylogeny of the group.
Micro-Density Determinations Of Liquids, Rachel L. Horowitz
Micro-Density Determinations Of Liquids, Rachel L. Horowitz
Bachelors’ Theses
Recent developments in the field of microchemistry have aroused the necessity of accurate micro-methods for density determinations. Such methods have been developed by various investigators and some of them found their application in re search and industry, wherever the saving of material and time was an essential problem.
The purpose of this work is to compare all the methods of micro-density determinations found in literature, check their accuracy and simplicity and find their limitations and advantages.
A Research In Sixth Grade Children's Solution Of Verbal Arithmetic Problems, Herbert Schroder
A Research In Sixth Grade Children's Solution Of Verbal Arithmetic Problems, Herbert Schroder
Master's Theses or Doctor of Nursing Practice
The purpose of this research in sixth grade children's solution of verbal problems in arithmetic is to investigate the mental processes that lie back of pupils' answers in arithmetic. That is, how do pupils solve verbal problems in arithmetic? The investigation involves several related problems such as; to what extent is the pupils' method of solution influenced by irrelevant data, cues, details, and numbers used in a problem?
An Investigation Of The Age-Hardening Of Copper With Nickel-Boron Compounds, Robert I. Moreen
An Investigation Of The Age-Hardening Of Copper With Nickel-Boron Compounds, Robert I. Moreen
Bachelors Theses and Reports, 1928 - 1970
Boron is an element whose metallurgical possibilities have never been fully investigated. The principal reason for this fact seems to lie in the difficulties encountered in preparing elemental boron and its various intermetallic compounds.
Porosity And Oil Absorption Properties Of Metal Compacts Of Copper - Tin - Graphite, Benjamin F. Mills
Porosity And Oil Absorption Properties Of Metal Compacts Of Copper - Tin - Graphite, Benjamin F. Mills
Bachelors Theses and Reports, 1928 - 1970
Powder metallurgy, the most recent innovation in metallurgical process, is not a new art; although not until recently did it become a matter of general interest, this being due not only to the products formed but also to the possibilities of future developments. The manufacture and application of metal powders is now beginning to take a position as a recognized part of the science of metallurgy.
Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner
Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner
Bachelors Theses and Reports, 1928 - 1970
In 1939 the total world production of crude chromite was approximately 1,167,000 metric tons; of which the United States produced only 3,672 metric tons and imported over 317,500 metric tons. Imports came mostly from the Philippine Islands, Cuba, South Africa, and Rhodesia.
Testing And Concentration Of A Low Grade Gold Ore From Marysville, Montana, John B. White, Jr.
Testing And Concentration Of A Low Grade Gold Ore From Marysville, Montana, John B. White, Jr.
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis was to investigate and attempt to concentrate low grade cyanided tailings rejected from the old Montana Mining and milling Company's mill situated 4 miles below the town of Marysville, Montana.
Polishing Mineral Specimens By The Use Of An Optical Polishing Machine, Wilbur J. Guay
Polishing Mineral Specimens By The Use Of An Optical Polishing Machine, Wilbur J. Guay
Bachelors Theses and Reports, 1928 - 1970
The problem in this investigation was to determine if mineral specimens mounted in bakelite, or lucite, could be polished for microscopic examination by the use of an optical polishing machine, and if this method would cut down the length of time required to polish specimens by the methods now in use.
Mineralogy And Genesis Of The Vermiculite Deposits At Libby, Montana, Raymond Kujawa
Mineralogy And Genesis Of The Vermiculite Deposits At Libby, Montana, Raymond Kujawa
Bachelors Theses and Reports, 1928 - 1970
The problem considered in this report is one of the mineralogy and mode of formation of the extremely pure, large bodies of vermiculite. Mineralogically the ultrabasic intrusive, with which the economic mineral is associated, presents an array of rather unusual minerals. The determination of these minerals, their associations, and the sequence of alteration that lead to the formation of the vermiculite bodies, constitutes the problem.
Geology Of Iron Deposits At Princeton Montana And Economic Aspects Of Iron Ore In Montana, Carl Lind
Geology Of Iron Deposits At Princeton Montana And Economic Aspects Of Iron Ore In Montana, Carl Lind
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to introduce to the reader, an iron deposit in the Princeton district, about 19 miles northeast by highway from Philipsburg, Montana. Heretofore there has been no written literature on this deposit. It is also intended to investigate the economic possibilities of iron ore in general in the State of Montana.
Parabos Dodsoni Barbour And Schultz: A Correction, Erwin Hinckley Barbour, C. Bertrand Schultz
Parabos Dodsoni Barbour And Schultz: A Correction, Erwin Hinckley Barbour, C. Bertrand Schultz
Department of Earth and Atmospheric Sciences: Faculty Publications
A Bos-like animal, Parabos dodsoni, was recently described by Barbour and Schultz (1941, "A New Fossil Bovid from Nebraska", Bull. Univ. Nebr. State Museum, Vol. II, No. 7, pp. 63-66, Figs. 24-27, December) as a new genus and species from the Pleistocene of Nebraska. Attention has been called to the writers by Dr. E. H. Colbert of the American Museum of Natural History that the name Parabos is preoccupied. Parabos was introduced as a generic name by C. Arambourg and J. Piveteau (1929, "Note preliminaire sur un Ruminant du Pliocene inferieur du Roussillon," C. R. Bull. Soc. Geol. de …
A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh
A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh
Bachelors’ Theses
At the present day chromium plated articles are saving the country many tons of badly needed metals. The beautiful, bright,luster that chromium has is no longer the prime quality that makes its use so extensive. Today its extreme hardness has taken the foremost place. Parts worn by use and re-claimed with chromium, not only wear longer than the original ones· but they also save valuable metal and time put into new ones. New articles plated with chromium have increased life, and thus the time and metal needed for replacement is greatly reduced.
The present chromium plating baths containing sulfuric acid …
Ceramic Experiments At The State Teachers College, Mankato, Minnesota, G. John Fischer, John L. Lang
Ceramic Experiments At The State Teachers College, Mankato, Minnesota, G. John Fischer, John L. Lang
Journal of the Minnesota Academy of Science
No abstract provided.
Geologic Field Mapping In An Area Eight Miles North Of Three Forks, Montana, H. E. Lillis
Geologic Field Mapping In An Area Eight Miles North Of Three Forks, Montana, H. E. Lillis
Bachelors Theses and Reports, 1928 - 1970
The Three Forks are includes parts of Jefferson, Madison, Broadwater Pond Gallatin counties, Montana. Sedimentary formations lie at the surface nearly everywhere in the area, and the rugged surface topography has been developed through the folding and tilting of these formations and their differential erosion.
An Experimental Investigation Of Certain Phases Of The Reaction Of Meta Dinitrobenzene And Carbonyl Compounds, William Elson
An Experimental Investigation Of Certain Phases Of The Reaction Of Meta Dinitrobenzene And Carbonyl Compounds, William Elson
Master's Theses
No abstract provided.
The Origin Of Daemonelix, Alvin Leonard Lugn
The Origin Of Daemonelix, Alvin Leonard Lugn
Department of Earth and Atmospheric Sciences: Faculty Publications
Attention is called to the controversy of some years ago over the origin of the "Devil's Corkscrews." The problem may have appeared unimportant then, but now a correct understanding of the paleoecology of Harrison time may hinge on the explanation of these strange "fossils." The characteristics of Daemonelix are briefly reviewed, they are compared to the lianas of the modern tropical jungle, and the postulated conditions of Harrison sedimentation are believed to supply an adequate explanation for the presence of fossil rodent remains in the Daemonelices. The possibility of a vegetal origin of these fossils is believed to be demonstrated.
A Study Of The Bright Nickel Producing Properties Of Tergitol Penetrant 4, Maurice F. Murphy
A Study Of The Bright Nickel Producing Properties Of Tergitol Penetrant 4, Maurice F. Murphy
Bachelors’ Theses
For many years, it has been known in the plating industry that certain metal baths were affected when materials called ’'addition agents” were added. The addition agents were usually organic and had high molecular weights. Nickel is especially sensitive to the presence of such foreign substances, a very bright deposit being obtained upon the addition of small amounts of gum, gelatin, glue, gum tragacanth, gum arabic and similar materials. These substances have, however, proved unsatisfactory because of difficulty of control and because of decomposition of the agent.
In the past ten years a new type of bright nickel bath has …
Will Russia Win The War?, Alvin Leonard Lugn
Will Russia Win The War?, Alvin Leonard Lugn
Department of Earth and Atmospheric Sciences: Faculty Publications
As this is written, Russia is not in the war; nevertheless, she may eventually win the war. It may not be immediately, it may not be for a generation, it may not be for fifty or more years, and it may be very soon. The "War" may not even be the present holocaust which engulfs Europe; but eventually Russia may win, even though new battles may be won and lost and perhaps much more blood spilled in the meantime; even a German victory may intervene with far-flung domina- tion in all of the continents.
Russia possesses unmeasured elements of strength …
The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding
The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding
Nebraska Agricultural Experiment Station: Historical Research Bulletins
In this investigation a survey of Nebraska soils has been made in order to determine the distribution of the aerobic nonsymbiotic and symbiotic nitrogen fixers of the genera Azotobacter and Rhizobium respectively. In connection with this survey, some of the characteristics of the soils which may bring about this distribution were studied. Up to this time practically no research has been reported on the microflora of the soils of Nebraska. Hence there is little basis for predicting the activity of these organisms under environmental conditions as they exist here. It is hoped that this work will not only supply some …