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Articles 114721 - 114750 of 115674
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 …
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 …
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.
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.
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.
A Study Of The Use Of The Dicyanatodipyridine (Ii) Complex For The Determination Of Cyanate, Jean Mcclelland
A Study Of The Use Of The Dicyanatodipyridine (Ii) Complex For The Determination Of Cyanate, Jean Mcclelland
Chemistry and Chemical Biology ETDs
Treadwell states in his text, Analytical Chemistry, Volume II, that "the only method for examining cyanates consists in determining the amount of carbon and nitrogen present by combustion." A review of the available literature shows that, although this is not literally true, a procedure for this quantitative determination of small amounts of cyanates in the presence of interfering substances is lacking.
A survey of the literature yielded few references for instrumental methods for the quantitative determination of cyanates. Ripan-Tilici published a method for the determination of cyanates poteniometrically, but attempts to duplicate her work have failed. Madame Tilici, in …
A Mineral Dressing Study Of The Benefication Of Philipsburg Manganese Carbonate Ore, Frank M. Antonioli
A Mineral Dressing Study Of The Benefication Of Philipsburg Manganese Carbonate Ore, Frank M. Antonioli
Bachelors Theses and Reports, 1928 - 1970
The beneficiation of rhodochrosite ore to the extent that it is suitable for nodulizing and subsequent use in the steel industry is intriguing. Such ores from certain mines is relatively easy to beneficiate, but the rhodo-chrosite ore from several deposits of the Philipsburg district has never been successfully up-graded by any of the several known beneficiating methods.
Physiographic Surfaces And Weathering Near Butte, Gordon B. Brox
Physiographic Surfaces And Weathering Near Butte, Gordon B. Brox
Bachelors Theses and Reports, 1928 - 1970
Three cycles of erosion have modified the Boulder batholith. The earliest cycle produced a peneplaination that has been largely obliterated by a partially completed intermediate cycle, and the recent cycle now in progress.
Fluorescence Of Oil Well Cuttings Under The Action Of Ultraviolet Light As Pertaining To Depth Of Wells Investigated, Linus S. Drees
Fluorescence Of Oil Well Cuttings Under The Action Of Ultraviolet Light As Pertaining To Depth Of Wells Investigated, Linus S. Drees
Master's Theses or Doctor of Nursing Practice
In 1937, Lippert (6) published a survey of the radioactive properties of subterranean waters of Ellis County, Kansas. In 1940, Bell, Goodman, and Whitehead (1) reported a survey on the radioactivity of sedimentary rocks and associated petroleum. In 1944, w. L. Russell (10) reported on the total gamma ray activity of sedimentary rocks as indicated by Geiger-Mueller Counter determination. Lastly, in 1949, M. W. Johnston (5) made a survey of radioactivity of oilwell drilling fluid with depth of wells. Since Johnston's work cited above included only producing wells it was thought worthwhile to continue this investigation to include wells both …
Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas
Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas
Bachelors Theses and Reports, 1928 - 1970
Since the purpose of this thesis is primarily to present an improved mechanical method for plotting isothermal transformations by means of differential magnetic permeability between untransformed austenite and its ultimate transformation product.
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
Bachelors Theses and Reports, 1928 - 1970
The objective of this thesis was to affect an efficient and economical recovery of corundum. The corundum occurs as a crude ore admixed with quartz and other diluents. Yet, this material is a potential Montana resource of a valuable non-metallic mineral. In view of the strategic importance and the relatively small production of this mineral in the United States, it seems advisable at this time in world affairs to investigate every possible source of this mineral.
The Lilly Mine Of Powell County, Montana, Wilbur Aikin
The Lilly Mine Of Powell County, Montana, Wilbur Aikin
Bachelors Theses and Reports, 1928 - 1970
For many years the Elliston District, of Powell County has been a minor producer of gold, lead, zinc, and silver. Although never among the largest producing districts of the state, it has with the exception of the war years supplied a notable tonnage of ore to the neighboring mills ever since the first placer and lode claims were located there during the late eighteen hundreds.
The Monadnock Volume 24, Number 2, May 1950, Clark University Geographical Society
The Monadnock Volume 24, Number 2, May 1950, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 24, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Logan River heads in the southeastern corner of Franklin County, Idaho, and runs in a south and westerly direction. It enters the state of Utah through the northern boundary in the northeast corner of Cache County. The main stream is fed by two tributary streams which head in separate directions a few miles apart. The Franklin Basin branch is the main contributing tributary while the Beaver Creek branch is nearly as large.
The Sixty-Second Session Of The Iowa Academy Of Science And The Seventeenth Convention Of The Junior Academy Of Science Of Iowa, April 21 And 22, 1950, Iowa Academy Of Science
The Sixty-Second Session Of The Iowa Academy Of Science And The Seventeenth Convention Of The Junior Academy Of Science Of Iowa, April 21 And 22, 1950, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
It's Time To Take Stock
United States Environmental Protection Agency: Publications
Likening colleges and universities to the automobile industry may seem far-fetched, but is it? Each is engaged in fashioning and selling necessary products- one trained men, the other mechanical equipment. Both entered the post-war years with production at low ebb; unable to satisfy pent-up customer demands. Time and high-speed assembly lines have bridged the gap of gas buggy shortage. The impact of selective buying by a discriminating public is now real cause for concern among some of the motor moguls. Rumor has had it that schools teaching wildlife management are overproducing. We decided to gather facts and opinions at the …
Public Health Reports, Clarence M. Tarzwell
Public Health Reports, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Preliminary tests with DDT for the control of mosquitoes, forest insects, and agricultural pests demonstrated that it was toxic to a wide variety of animal life. Because there were indications that the new insecticide would be widely used, apprehension was expressed by some groups that its extensive or indiscriminate use would cause extensive harm to wildlife.
The desirability of carefully controlled use was early recognized by those in charge of extensive programs for the control of insects of public health importance. A joint statement of policy for the use of DDT issued early in 1945 (1) by the Army and …
The Mt. Pleasant Story, United States Department Of Agriculture
The Mt. Pleasant Story, United States Department Of Agriculture
Elusive Documents
No abstract provided.
Ecology And Silviculture Of Whitecedar And Associated Hardwoods In Southern New Jersey, Silas Little Jr.
Ecology And Silviculture Of Whitecedar And Associated Hardwoods In Southern New Jersey, Silas Little Jr.
Yale School of the Environment Bulletin Series
No abstract provided.
Digestion Studies With Sheep And Wild Antelope On A Sagebrush Ration, Paul Harold Kohler
Digestion Studies With Sheep And Wild Antelope On A Sagebrush Ration, Paul Harold Kohler
Electronic Theses and Dissertations
Introduction: Those who are responsible for the management of antelope, range livestock, and the range seek to maintain such a balance that al may thrive and reproduce. This is inevitably a difficult objective since the balance in numbers of antelope and livestock may be changed annually, but range flora changes only in long-time cycles. Therefore, the balance between the wild and domestic species and the range must be adjusted frequently by range and livestock management. The adjustment of the number of domestic animals to fit the carrying capacity of the range may be accomplished by changing management and marketing practices …
Nebraska Fishing Waters
Nebraska Game and Parks Commission: Publications
Nebraska waters are inhabited by a wide diversity of fish, including both cold and warm water species. Brown, brook and rainbow trout represent the state's cold water species while the warm variety consists of white bass, large mouth bass, small mouth bass, rock bass, walleye, sauger, northern pike, white crappie, black crappie, perch, channel catfish, blue catfish, yellow catfish, bluegill, freshwater drum, bluegill, sunfish, pumpkin seed and bullhead.
All residents of Nebraska 16 years of age and over must purchase fishing permits to angle in the state. All non-residents, regardless of age, must possess nonresident permits to fish in Nebraska.
A Grazing Incidence Vacuum Grating Spectrograph For Far Ultra Violet Spectroscopy, Lawrey Huber Chapin
A Grazing Incidence Vacuum Grating Spectrograph For Far Ultra Violet Spectroscopy, Lawrey Huber Chapin
Masters Theses
"Spectroscopy, in the region of the far ultraviolet from 100 Angstroms to 1000 Angstroms, requires special equipment and techniques, inasmuch as these wavelengths are highly absorbed by air. Many gases have resonant frequencies corresponding to the wavelengths mentioned and hence absorption bands appear in the spectrograms obtained by using spectrographs for the visible region. One solution of the problem of obtaining data in this region is to construct a spectrograph from which all intervening gas molecules have been removed, thus eliminating the absorbing material. A vacuum of 10⁻⁴ mm. of mercury is necessary to reduce the absorption to a value …
A Study Of Alcoholysis Using Methyl Esters And Tall Oil, Raymond Martin Frey
A Study Of Alcoholysis Using Methyl Esters And Tall Oil, Raymond Martin Frey
Bachelors’ Theses
One of the Easiest ways of preparing new esters is by heating an ester with another alcohol which frequently permits transfer of the acid radical from the original ester to the added alcohol, thous forming a new ester and liberating the other alcohol. Preparation of triglycerides of unsaturated fatty acids of 18 carbon atoms is hampered by the fact that prolonged heating in the usual ester formation methods causes both polymerization and condensation among acid radicals unless oxygen is carefully excluded from the reaction atmosphere. Consequently a method of acid interchange might afford the triglycerides at a faster rate and …
Further Studies Of The Reactions Of Quinoxaline, 2-Methyl-, And 2,3-Dimethylquinoxaline, Chester E. Hamilton
Further Studies Of The Reactions Of Quinoxaline, 2-Methyl-, And 2,3-Dimethylquinoxaline, Chester E. Hamilton
Theses and Dissertations
A long term research program into the chemistry of quinoxalines has been instituted at Brigham Young University. The literature of quinoxaline chemistry was reviewed and assembled in one paper. Methods of preparation of 2,3-dimethyl- and 2- methylquinoxaline were studied and improved. The bromination of 2,3-dimethylquinoxaline using N-bromosuccinimide was accomplished and an anil addition using quinoxaline and phenyllithium was achieved. Efforts to prepare vinylquinoxalines were unsuccessful. In order to pursue an investigation into the numerous reactions of the 1,4 addition type, a method of preparations of vinyl-quinoxalines must be achieved. In the present investigation, various methods of synthesis of vinyl- and …
Certain Coloring Matters Derived From Vanallin And Methyl Salicylate, Thompson James Coe
Certain Coloring Matters Derived From Vanallin And Methyl Salicylate, Thompson James Coe
University of the Pacific Theses and Dissertations
The purpose of this investigation was to prepare a number of coloring matters by condensing vanillin with para-methoxyacetophenone, meta-nitroacetophenone, and para-bromoacetophenone, and to prepare another group by condensing methyl salicylate with acetophenone, para-methoxyacetophenone, meta-nitroacetophenone, and ortho-hydroxyacetophenone. Ethyl salicylate and para-methoxyacetophenone were condensed as a check.
An Ecological Study Of The Foraminifera Of Mason Inlet, North Carolina, Daniel N. Miller Jr.
An Ecological Study Of The Foraminifera Of Mason Inlet, North Carolina, Daniel N. Miller Jr.
Masters Theses
"Mason Inlet. North Carolina is a lagoonal marsh area with warm-temperate water, the salinity ranging from fresh to salt water. Nine collecting stations comprise an ecological gradient across the environment.
Forty-two species of foraminifera are recorded from the inlet, ranging in their affinities from brackish water to open-sea facies. Several extensions of range are recorded both northward and southward.
Substratum conditions apparently control the distribution of foraminifera within the inlet. Clean, fine sand provided the largest faunal populations. A depauperate assemblage was found in an inorganic, argillaceous substratum. The largest population of arenaceous forms was found at the channel through …
Selected Studies Of Organic Reagents., Louis Johnson Conrad
Selected Studies Of Organic Reagents., Louis Johnson Conrad
LSU Historical Dissertations and Theses
No abstract provided.
The Synthesis And Insecticidal Activity Of Some Halogenated Aromatic Ethers., Tien-Chih Chen
The Synthesis And Insecticidal Activity Of Some Halogenated Aromatic Ethers., Tien-Chih Chen
LSU Historical Dissertations and Theses
No abstract provided.
Relative Productive Value Of Land, Karl Harris, Vaughn E. Hansen
Relative Productive Value Of Land, Karl Harris, Vaughn E. Hansen
Reports
Location, markets, hard surface roads and other transportation facilities, churches, taxes, schools, and utilities are major factors in the monetary value of land, yet these things do not contribute to the land’s productivity. In this bulletin the only factor considered in determining the agricultural value of land is its productive capacity.
The three major factors in the productive value of land are water, climate, and soil.
These three factors are the principal ones in crop production. If any one of them is unfavorable to plant growth, it can inhibit or even prevent plant growth regardless of how favorable the other …
The Theory Of The Specific Heat Of A Face-Centered Cubic Lattice, Charles Robert Bonnell
The Theory Of The Specific Heat Of A Face-Centered Cubic Lattice, Charles Robert Bonnell
Masters Theses
"It is generally accepted that a normal crystalline solid can be pictured at absolute zero as an assembly of atoms at rest arranged at periodic lattice points. Since at higher temperatures each molecule becomes a harmonic oscillator about its lattice point, it is necessary to know the distribution of normal modes of vibration in order to calculate the thermodynamic properties of the lattice...Many approaches have been made to get a simple solution of the problem, but either accuracy is sacrificed for simplicity, or the solutions demand a very considerable amount of labor. The classical theories failed to explain the change …