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Articles 39361 - 39390 of 40197

Full-Text Articles in Physical Sciences and Mathematics

Test 462: International Td-6, Nebraska Tractor Test Lab Jan 1951

Test 462: International Td-6, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 455: Massey-Harris 55, Nebraska Tractor Test Lab Jan 1951

Test 455: Massey-Harris 55, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab Nov 1950

Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab Nov 1950

Test 454: Dodge Power Wagon T137, 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 …


Test 453: Allis-Chalmers Ca, Nebraska Tractor Test Lab Oct 1950

Test 453: Allis-Chalmers Ca, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 452: Massey-Harris 55 Diesel, Nebraska Tractor Test Lab Oct 1950

Test 452: Massey-Harris 55 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 451: Oliver 99, Nebraska Tractor Test Lab Sep 1950

Test 451: Oliver 99, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 451: Oliver 99, Nebraska Tractor Test Lab Sep 1950

Test 451: Oliver 99, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 450: Oliver Row Crop 88 Diesel, Nebraska Tractor Test Lab Sep 1950

Test 450: Oliver Row Crop 88 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 449: Choremaster B, Nebraska Tractor Test Lab Sep 1950

Test 449: Choremaster B, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 448: John Deere Mc, Nebraska Tractor Test Lab Jul 1950

Test 448: John Deere Mc, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere MC 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 447: International Td-24, Nebraska Tractor Test Lab Jun 1950

Test 447: International Td-24, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Czarina Mine, Butte, Montana, Prodyot K. Das Jun 1950

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 Jun 1950

Test 446: International Td-18a, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 445: International Td-14a, Nebraska Tractor Test Lab Jun 1950

Test 445: International Td-14a, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 444: Ford 8nan, Nebraska Tractor Test Lab Jun 1950

Test 444: Ford 8nan, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 443: Ford 8n, Nebraska Tractor Test Lab Jun 1950

Test 443: Ford 8n, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 442: Cockshutt 40, Nebraska Tractor Test Lab Jun 1950

Test 442: Cockshutt 40, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Montana Talc; Problems In Physical Properties, E. C. Armstrong Jun 1950

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 Jun 1950

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 Jun 1950

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 Of The Colorado Shale At Fort Benton, Montana, Robert E. Willson Jun 1950

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.


Fauna And Stratigraphy Of The Meagher Formation At Three Localities In Southwestern Montana, William J. Van Matre Jun 1950

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.


Mineralization Of The Bonanza Mine, H. M. Callaway Jun 1950

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 From The Colorado Shale Near Sunburst, Montana, Frank R. Reynolds Jun 1950

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 Divide-Dewey Contact Of The Boulder Batholith, Francis M. Young Jun 1950

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.


Mottling In The Meagher Limestone, Ronald J. White Jun 1950

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 Effect Of The Maximum Melt Temperatures Upon The Degree Of Supercooling Of Gallium, Wilfred E. Nagel Jun 1950

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.


Test 441: Mccormick-Deering Wd-9, Nebraska Tractor Test Lab May 1950

Test 441: Mccormick-Deering Wd-9, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 437: Minneapolis-Moline G, Nebraska Tractor Test Lab May 1950

Test 437: Minneapolis-Moline G, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.