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Articles 290071 - 290100 of 292688
Full-Text Articles in Entire DC Network
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.
The Physiography Of Beauregard And Allen Parishes., Wilbur Charles Holland
The Physiography Of Beauregard And Allen Parishes., Wilbur Charles Holland
LSU Historical Dissertations and Theses
No abstract provided.
The Monadnock Volume 17, Number 1, December 1942, Clark University Geographical Society
The Monadnock Volume 17, Number 1, December 1942, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 17, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
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.
The Effect Of The Ph On The Viscosity Of Various Gelatin Solutions, Theodore C. Kraus
The Effect Of The Ph On The Viscosity Of Various Gelatin Solutions, Theodore C. Kraus
Bachelors’ Theses
Tremendous research has been done in recent years In the field of the protein colloids. Our small, but nevertheless important knowledge of the protein colloids is due to such eminent investigators as Loeb, Kruyt, Freundlich, and Hardy, to name only a few. They have presented to the scientific world valuable experiments and reports of their work. However, much remains to be accomplished in spite of their achievements. The fact that the whole of the organic life processes concerns Itself with colloidal phenomena, particularly the reactions of large aggregates of protein particles, is indicative that the field is widespread in its …
Vegetation Of The Northern Part Of Cherry County, Nebraska, William L. Tolstead
Vegetation Of The Northern Part Of Cherry County, Nebraska, William L. Tolstead
Conservation and Survey Division: Faculty and Staff Publications
Agricultural practices in the Great Plains of North America are now in a period of adjustment from a traditional agriculture initiated by pioneer farmers to a grazing economy based upon potentialities of climate and soil. The attainment of a proper system of land use has been retarded in many localities by the lack of definite information concerning the vegetation and its indicator significance. In this study of the vegetation of Cherry County, Nebraska, the interrelations between the plants and their environments are discussed, the dominant species are described, and changes in grasslands caused by seasons, grazing, and climatic cycles are …
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?
Report Of Investigation On The Physical Characteristics Of The Oil Sands From The Cut Bank Field, Montana, V. E. Hanes
Report Of Investigation On The Physical Characteristics Of The Oil Sands From The Cut Bank Field, Montana, V. E. Hanes
Bachelors Theses and Reports, 1928 - 1970
The purpose of this research was to study the physical characteristics, mainly, porosity and permeability of the oil sands from the Cut Bank field, Glacier County, Montana. In so doing, a better understanding of the relationship of these physical characteristics to one another and to the pool itself could be obtained.
Physical And Chemical Properties Of Soil Profiles Of The Scott, Fillmore, Butler, Crete, And Hastings Series, Henry W. Smith, H. F. Rhoades
Physical And Chemical Properties Of Soil Profiles Of The Scott, Fillmore, Butler, Crete, And Hastings Series, Henry W. Smith, H. F. Rhoades
Nebraska Agricultural Experiment Station: Historical Research Bulletins
For the studies reported here most of the samples were taken in the spring of 1940 from the walls of deep pits dug in areas previously selected by surveyors and inspectors as type locations for the Butler series. To elucidate certain points, samples were taken from the upper part of several other profiles, also called Butler, the following year. In addition to this work on the characterization of the Butler series, further data have been collected concerning soils of the Scott, Fillmore, Crete, and Hastings series. Profile samples were obtained from type locations of each of these series. The data …
The Monadnock Volume 16, Number 2, June 1942, Clark University Geographical Society
The Monadnock Volume 16, Number 2, June 1942, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 16, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
Refining Of Low Grade Zinc-Gold Precipitates, John C. Stentz
Refining Of Low Grade Zinc-Gold Precipitates, John C. Stentz
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to ascertain if advantage could be taken of the copper in the precipitates as a collecting agent of the precious metals in the direct smelting furnace.The products produced to be low grade anode bullion and a slag low in precious metals, high in zinc and lead.
Upper Mississippian Faunas Of Western Montana, James King
Upper Mississippian Faunas Of Western Montana, James King
Bachelors Theses and Reports, 1928 - 1970
The author has made a study of an assemblage of fossils from the Blacktail Range near Dillon Montana with the purpose in view of attempting a correlation of that group with the fauna of the Big Snowy Group. Fossils have also been obtained from a limestone formation in northwestern Montana and from four different areas in the Amsden formation in central and western Montana.
Helena And Ennis Talc Deposits, Howard N. Anderson
Helena And Ennis Talc Deposits, Howard N. Anderson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this report is to collect geologic data concerning two Montana talc occurrences at Helena and Ennis and to offer some explanation as to their origin. The two deposits cited are in somewhat similar lithologic settings and both possess the same mineralogical and structural features. Because of this similarity only the Helena deposit is covered in detail.
Stratigraphic Studies Of The Ordovician And Devonian Formations Throughout The Northwest Plains Area, Walter N. Campbell
Stratigraphic Studies Of The Ordovician And Devonian Formations Throughout The Northwest Plains Area, Walter N. Campbell
Bachelors Theses and Reports, 1928 - 1970
As yet the knowledge of Ordovician and Devonian physiography in this vast northwest region remains almost a complete secret. Very little, in any, work has been done along this line with the exception of those areas where the various formations outcrop.
An Experimental Investigation Of The Age Hardening Of Nickel With Boron, Willard M. Boam
An Experimental Investigation Of The Age Hardening Of Nickel With Boron, Willard M. Boam
Bachelors Theses and Reports, 1928 - 1970
Since 1911, at which time, the age hardening phenomenon of duralumin was discovered by Film, much research has been carried on investigating the various alloy systems. The successful application of age hardening to the copper aluminum system (duralumin) has indicated the possibility of hardening practically all the metals in the same way.
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.
The Application Of A Laboratory Induction Furnace To The Selective Smelting Of A Montana Chromite Concentrate, James H. Mcmahon
The Application Of A Laboratory Induction Furnace To The Selective Smelting Of A Montana Chromite Concentrate, James H. Mcmahon
Bachelors Theses and Reports, 1928 - 1970
The purpose of this experimental work was to determine with the utilization of a laboratory sized induction furnace a method whereby a high-iron Montana chromite concentrate could be successfully smelted to yield a product suitable for the subsequent production of standard ferrochrome.
The Determination Of Aluminum In The Presence Of Manganese And Iron By The Use Of A Mercury Cathode, William R. Opie
The Determination Of Aluminum In The Presence Of Manganese And Iron By The Use Of A Mercury Cathode, William R. Opie
Bachelors Theses and Reports, 1928 - 1970
Since 1880, when Wolcott Gibbs made the suggestion that mercury could be used as a cathode in gravimetric electroanalysis, many articles have appeared in literature either criticizing the method or citing successful results which have been obtained by it.
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.
A Study Of The Dissolution Of Pyrolusite In Sulphuric Acid, John J. Worsdell
A Study Of The Dissolution Of Pyrolusite In Sulphuric Acid, John J. Worsdell
Bachelors Theses and Reports, 1928 - 1970
With an eye to the future development of its resources, the large deposits of low-grade manganese ore within Montana's boundaries show great promise of developing an important industry. With the present war demands and the possibility of a future market it is essential that work expended to utilize this important mineral.
Age Hardening Of Copper-Aluminum Alloy Castings, Frank Randall
Age Hardening Of Copper-Aluminum Alloy Castings, Frank Randall
Bachelors Theses and Reports, 1928 - 1970
Age hardening occurs in alloys of the solid solution type containing a hardening constituent, be it metal or metallic compound, which is more soluble in the solvent phase at higher temperatures than at lower ones.
An Investigation Into The Recovery Of Indium From Fume Residue, Emery J. Turner
An Investigation Into The Recovery Of Indium From Fume Residue, Emery J. Turner
Bachelors Theses and Reports, 1928 - 1970
Several months were required to produce a single gram of indium. Consequently, the industrial history of the metal is extremely short. In view of the unique properties that indium has demonstrated in this short period, it is probable that indium is still in its early stage of development. However, the commercial applications of the metal are well established and indium is now produced on a commercial scale. It is obtainable as the metal or in solution for electroplating.
Some Leaching Characteristics Of The Butte Rhodochrosite, W. L. Slosson
Some Leaching Characteristics Of The Butte Rhodochrosite, W. L. Slosson
Bachelors Theses and Reports, 1928 - 1970
With the increasing importance of manganese in the metallurgical fields of today and tomorrow, extensive work along the lines of its successful exploitation has been accomplished by many investigators. Since tie current world situation has shut off most of our supply of high-grade manganese ores from foreign sources, the low-grade domestic deposits have entered the fields of investigation very rapidly.
The Effects Of Some Percentages Of Nickel On The Annealing Of Cartridge Brass, A. Edward Zezula
The Effects Of Some Percentages Of Nickel On The Annealing Of Cartridge Brass, A. Edward Zezula
Bachelors Theses and Reports, 1928 - 1970
The most important element in the alloying of steels, has also been used quite extensively as a third constituent in copper-zinc alloys. The chief characteristics of nickel which make it desirable as an alloying element are its toughness, high strength, and resistance to corrosion.
The Anodic Oxidation Of Vanadium In Phosphoric Acid Solution, Ben H. Alexander
The Anodic Oxidation Of Vanadium In Phosphoric Acid Solution, Ben H. Alexander
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis was to analyze the possibility of recovering the vanadium in the phosphoric acid by anodic oxidation in an electrolytic cell. This problem allowed not only the possibility of improving a commercial operation, but a study of the functioning of an interesting and very important phenomena.
Mineral Occurences In Certain Pegmatite Dikes In Southwestern Montana, Jacob N. Jovick
Mineral Occurences In Certain Pegmatite Dikes In Southwestern Montana, Jacob N. Jovick
Bachelors Theses and Reports, 1928 - 1970
Pegmatite dikes are rather common in occurrence in parts of southwestern Montana, particularly in a region to the east of the Tobacco Root range 50 to 75 miles southeast of Butte.