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Articles 300931 - 300960 of 302608
Full-Text Articles in Physical Sciences and Mathematics
A Preliminary Study Of The Ostracoda Of The Big Snowy Group, Mississippian, Of Montana., John C. Rabbitt
A Preliminary Study Of The Ostracoda Of The Big Snowy Group, Mississippian, Of Montana., John C. Rabbitt
Bachelors Theses and Reports, 1928 - 1970
In the field, samples were taken vertically and horizontally along the various outcrops in different sections of central and south-central Montana. At important localities the samples were taken about every half-foot vertically; in other sections they were taken every few feet.
Chemical And Physical Considerations Of Carbohydrates, Flora Cooke
Chemical And Physical Considerations Of Carbohydrates, Flora Cooke
Chemistry Honors Papers
This 13 page thesis examines chemical and physical considerations of carbohydrates.
The Electrodeposition Of Manganese From Certain Aqueous Solutions, Fred J. Hill
The Electrodeposition Of Manganese From Certain Aqueous Solutions, Fred J. Hill
Bachelors Theses and Reports, 1928 - 1970
Careful examination of the literature available shows that the electrodeposition of manganese from various aqueous solutions has not been attempted to any great extent. The best method for the electrodeposition of pure manganese consists in the electrolysis of a solution containing manganous and ammonium sulphates.
The Staining Effect Of The Hydrochloric Acid-Chromate Trioxide Solution On The Minerals Of The Chalcocite-Stibnite-Galena Ternary System., John W. Johns Jr.
The Staining Effect Of The Hydrochloric Acid-Chromate Trioxide Solution On The Minerals Of The Chalcocite-Stibnite-Galena Ternary System., John W. Johns Jr.
Bachelors Theses and Reports, 1928 - 1970
The object of this work has been to devise a method by which the different phases in the chalcocite-stibnite-galena ternary system may be identified. As the mineralogists have no precise methods for the identification of these phases, a hydrochloric acid-chromate trioxide staining solution was employed.
Occurrence And Origin Of Placer Gold In Montana, John K. Halse
Occurrence And Origin Of Placer Gold In Montana, John K. Halse
Bachelors Theses and Reports, 1928 - 1970
From time immemorial man has used gold as a medium of exchange, a measure of value, as jewelry and for ornamentation. Placer gold has led directly or indirectly to the settlement of lands, California and Alaska being the two best known examples. It has led the way to the discovery of other important mineral wealth, the discovery of the copper and silver deposits at Butte, Montana and the discovery of the silver deposits at Cripple Creek, Colorado being two good examples.
An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.
An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.
Bachelors Theses and Reports, 1928 - 1970
Although there is no standardized list of alloys, most investigators have, to avoid confusion, concurred in at least grouping the metals under several general heads. Precious metals: gold, silver and the platinum group; the light metals: aluminum and magnesium; the non-ferrous metals (excluding all steels and iron-base alloys); and the antifriction metals.
The Separation Of Tungstic Oxide From Scheelite And Its Subsequent Reduction With Hydrogen, Dave Jones
The Separation Of Tungstic Oxide From Scheelite And Its Subsequent Reduction With Hydrogen, Dave Jones
Bachelors Theses and Reports, 1928 - 1970
The largest known deposits of tungsten ores occur in the continuation of the Indo-Malayan Mountains, which extends through Burma, Malaya, China, Japan, and Chosen. Production of tungsten concentrates was started in 1910 in Burma, and in 1911 this country was the world's largest producer. China produced but little until 1916, but has since supplied over fifty per cent of the world's requirements.
The Grignard Reagents: Their Preparation, Flora Cooke
The Grignard Reagents: Their Preparation, Flora Cooke
Chemistry Honors Papers
This 14 page thesis examines various methods for the preparation of the Grignard reagent.
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Bachelors Theses and Reports, 1928 - 1970
A microscopic investigation of the Montana silver minerals was conducted. This study consisted mainly of identifying the silver and silver-bearing minerals and of determining their paragenetic relationships. The increasing amount of research in which the reflecting microscope is employed is evidence of the great value of this method of approach in the solution of problems of paragenesis of the opaque minerals.
The Geology Of Lost Creek Canyon With Special Reference To Igneous Activity, John Kolesar
The Geology Of Lost Creek Canyon With Special Reference To Igneous Activity, John Kolesar
Bachelors Theses and Reports, 1928 - 1970
This investigation was undertaken primarily as a problem in geologic mapping, coupled with a study of stratigraphy, glaciation, igneous phenomena, and structure. The area is admirably suited to a study of geology and geologic events. Because it is small in extent, the area was studied in some detail during the time which was devoted to field work. The record of igneous activity of past geological ages is remarkably well exposed, since Lost Creek Canyon was carved through the roof of a stock or batholith by the glaciers of the Pleistocene epoch.
Siliceous Sponge Spicules Of The Quadrant Formation From Montana., Lester Zeihen
Siliceous Sponge Spicules Of The Quadrant Formation From Montana., Lester Zeihen
Bachelors Theses and Reports, 1928 - 1970
A sponge spicule is a siliceous or calcareous individual or group of rays which form a framework for the sponge. Sponge spicules are very delicate and easily broken. The methods used in obtaining micro-fossils vary considerably with the type of material from which they are to be recovered and the frailness of the fossil obtained.
The Purification Of Coffee Wax By Means Of A Special Extractor Followed By A Dialysis Process, John Dobrojevic
The Purification Of Coffee Wax By Means Of A Special Extractor Followed By A Dialysis Process, John Dobrojevic
Bachelors’ Theses
This work was performed with the intention of devising a method where-by true wax could be isolated from a conglomerated mixture called coffee wax.
The General Geology Of The Cardwell Mining District, Clyde Congdon
The General Geology Of The Cardwell Mining District, Clyde Congdon
Bachelors Theses and Reports, 1928 - 1970
The Cardwell Mining District is part of the greater Whitehall Mining District. The district is situated about four miles to the east and northeast of Whitehall in the southern end of the Bull Mountains which are near the Continental Divide. The first reported production was in 1896 after the discovery of the Mayflower Mine. Mining has been carried on intermittently and on a small scale since that time.
Sensitivity Of Curcumin As An Organic Reagent In Testing For Beryllium, James W. Bookhamer
Sensitivity Of Curcumin As An Organic Reagent In Testing For Beryllium, James W. Bookhamer
Bachelors’ Theses
For many years the analytical chemist avoided by design or more probably by accident the general use of organic chemicals in his work. Some few of them he accepted as a matter of course, and perhaps without much thought of their organic nature. In qualitative analysis he used chloroform as a solvent in testing for bromine and iodine. A few indicators were in common use, but organic chemicals were used but little in analytical work. It was not until the twentieth century that their use in analytical procedures received any worthwhile attention. Since then they have rapidly come to the …
Some Aldehyde Condensation Derivatives Of Creatinine, Clarence England Denoon Jr.
Some Aldehyde Condensation Derivatives Of Creatinine, Clarence England Denoon Jr.
Master's Theses
When insulin, a substance which is used to reduce sugar in the blood is hydrolysed, products are obtained bearing some similarity to creatinine. Therefore, reasoning conversely, creatinine derivatives might be expected to posses as a hypo- glycemic (sugar reducing) effect.
Exotic Ancient Forests Of Washington, George F. Beck
Exotic Ancient Forests Of Washington, George F. Beck
All Faculty Scholarship for the College of the Sciences
The greatest fossil forest in the world is located within easy driving distance of the University of Washington campus in the State of Washington, near the Columbia River, east of the city of Ellensburg. Mr. George F. Beck, a member of the faculty of the Ellensburg State Normal School, and a former graduate student of the College of Forestry of the University of Washington, discovered this forest, which is now known as the Ginkgo Forest State Park. Aside from its importance from a scientific point of view, this "petrified forest," which contains a greater variety of species than any other …
The Nebraska Earthquake Of March 1, 1935, Alvin Leonard Lugn
The Nebraska Earthquake Of March 1, 1935, Alvin Leonard Lugn
Department of Earth and Atmospheric Sciences: Faculty Publications
RESIDENTS within an area of 50,000 to 75,000 square miles in Nebraska, Iowa, Missouri and Kansas were awakened by mild but distinct earth tremors at 5:00 and 5:03 A.M. on March 1. No damage of any importance has been reported. Two distinct tremors occurred, each lasting about 10 seconds, about 3 minutes apart.
The Sugar Beet Industry Of Nebraska, Esther S. Anderson
The Sugar Beet Industry Of Nebraska, Esther S. Anderson
Conservation and Survey Division
No abstract provided.
The Application Of Differential Equations To The Laws Of Physics, Sherman Baker
The Application Of Differential Equations To The Laws Of Physics, Sherman Baker
Bachelors’ Theses
In this treatment of the mathematical expression of physical laws, all proofs and expositions of problems that are taken from particular books are acknowledged in the text. Formulas and proofs that are given in a conventional form by authors generally and are the property of no single man are not acknowledged. Such are the alternating current equations, the Mass Action formulas, parts of the thermionic current discussion, and Fourier's equation for the flow of heat.
Some preparation in the sciences on the part of the reader is taken for granted in the presentation of the matter on this thesis. The …
A New Miocene Dog, Mesocyon Geringensis, Sp. Nov., Erwin Hinckley Barbour, C. Bertrand Schultz
A New Miocene Dog, Mesocyon Geringensis, Sp. Nov., Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum
A field party from the Nebraska State Museum consisting of Messrs. E. L. Blue, Frank Crabill, Loren Eiseley, and C. Bertrand Schultz, on August 28, 1931, was fortunate in finding the remains of a new Mesocyon. This specimen, number 4-28-8-31, the Nebraska State Museum, was found in the Gering formation (lower Miocene), fifteen feet above the Brule, 400 feet west of the road in Redington Gap, near the center of the S. 1/2, sec. 14, T. 19 N., R. 52 W., west of Bridgeport, Morrill County, Nebraska.
Gnathabelodon Thorpei, Gen. Et Sp. Nov. A New Mud-Grubbing Mastodon, Erwin Hinckley Barbour, George F. Sternberg
Gnathabelodon Thorpei, Gen. Et Sp. Nov. A New Mud-Grubbing Mastodon, Erwin Hinckley Barbour, George F. Sternberg
Bulletin of the University of Nebraska State Museum
In February, 1932, while opening a gravel pit to get material for highway construction, the skull, tusks, and mandible of a new longirostral mastodont were found by Robert Arnold on his ranch, Sec. 24, T. 12 S., R. 22 W., 1 1/2 miles due east of Ogallah, Trego County, western Kansas. This point is located about 20 miles west and three miles north of Hays, the seat of the Fort Hays Kansas State College, in the museum of which the above mentioned specimen is mounted and exhibited. When unexpectedly exposed by Mr. Arnold and his associates, the great skull was …
Water, W. J. Mayo
Water, W. J. Mayo
Journal of the Minnesota Academy of Science
In the hope of stimulating interest in the problem of water, I wish to devote a few minutes to some of the physical properties of water.
On The Summability Of A Certain Class Of Series Of Jacobi Polynomials, A. P. Cowgill
On The Summability Of A Certain Class Of Series Of Jacobi Polynomials, A. P. Cowgill
Department of Mathematics: Faculty Publications
The result obtained in this paper is as follows:
The series Σni[((p + 1)(p +3)…(p +2n -1)) ÷(2nn!) X((p-1)/2)n (x), where Xn(p-1)/2(x) (hereafter indicated simply by Xn) is a symmetric Jacobi polynomial p >-1, and i a positive integer, is summable (C, k),k>i—1/2, for the range -1 <x<1.
Anhydrous Alcohol And The Vapor Phase Method Of Preparing It, Cleetis Brown
Anhydrous Alcohol And The Vapor Phase Method Of Preparing It, Cleetis Brown
University of the Pacific Theses and Dissertations
Since the almost universal laboratory method of preparing absolute alcohol requires considerable time and trouble, gives a low yield of alcohol and leaves a distilling flask badly clogged with hydrated lime, Professor S.S, Kistler and I undertook the following research in the hope that we might devise a new method that would be both rapid and easy to perform.
Upon reviewing the possibilities, it seemed evident that any method to be rapid would have to involve drying In the vapor phase. Diffusion in a liquid being so slow that when a drying agent is placed in the liquid phase an …
A Geological Report On Several Localities Of Madison County, Montana, Hans Fritzsche
A Geological Report On Several Localities Of Madison County, Montana, Hans Fritzsche
Bachelors Theses and Reports, 1928 - 1970
The area selected for study comprises four different districts situated in Madison County, each of them showing typical geologic features: the South Boulder District, the "Montana type section of Paleozoic and Mesozoic rocks", the Mayflower District with the famous Mayflower mine, the Renova Hot Springs District as an excellent area for studying structural features, and the Silver Star Mining District with its contact metamorphic ore deposits.
Test 236: John Deere D, Nebraska Tractor Test Lab
Test 236: John Deere D, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT: John Deere D
TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.
This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.
BELT HORSEPOWER TESTS
TEST …
An Application Of A Theorem Of Borel On Natural Boundaries To The Theta-Zero Functions And Analogous Functions, Louis William Tordella
An Application Of A Theorem Of Borel On Natural Boundaries To The Theta-Zero Functions And Analogous Functions, Louis William Tordella
Master's Theses
No abstract provided.
Test 232: John Deere B, Nebraska Tractor Test Lab
Test 232: John Deere B, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT: John Deere B
TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.
This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.
BELT HORSEPOWER TESTS
TEST …
Test 241: Caterpiller Model 50 (Diesel), Nebraska Tractor Test Lab
Test 241: Caterpiller Model 50 (Diesel), Nebraska Tractor Test Lab
Nebraska Tractor Tests
All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.
All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.
Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …
Selenium In Proteins From Toxic Foodstuffs, Edgar Page Painter
Selenium In Proteins From Toxic Foodstuffs, Edgar Page Painter
Electronic Theses and Dissertations
The importance of the selenium problem has been established. Knight (1) in an address before The Association of Official Agricultural Chemists summarized the progress made on the problem, conservatively emphasized its importance, and stressed the need for extensive research. It is a paramount problem not only in South Dakota, but in many other states as well.