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Articles 290641 - 290670 of 292219

Full-Text Articles in Physical Sciences and Mathematics

The Geology And Mammalian Fauna Of The Pleistocene Of Nebraska Part I Outline Of Pleistocene Geology Of Nebraska Part Ii The Pleistocene Mammals Of Nebraska, A. L. Lugn, C. Bertrand Schultz Jan 1934

The Geology And Mammalian Fauna Of The Pleistocene Of Nebraska Part I Outline Of Pleistocene Geology Of Nebraska Part Ii The Pleistocene Mammals Of Nebraska, A. L. Lugn, C. Bertrand Schultz

Bulletin of the University of Nebraska State Museum

The object of the present paper is to provide a suitable brief statement of the present state of knowledge of the Pleistocene geology of Nebraska, for an adequate understanding of the Pleistocene Mammal list, by Mr. C. Bertrand Schultz, which forms Part II of this report. The "outline" is necessarily brief and does not contain many detailed sections, nor lengthy discussions of controversial points. It is lacking in adequate detailed descriptions of new formations and may not be entirely convincing to many readers. The only excuse which the writer can offer for the shortcomings of the following pages is the …


The Hampton Tusk [Manuscript], Emmett J. Cable Jan 1934

The Hampton Tusk [Manuscript], Emmett J. Cable

Mastodon Tusk Background Material

On September 23, 1933, there was unearthed a large tusk in a gravel pit on the farm of W. S. Heuermann, section 21, Reeve township, Franklin County, about four miles south of the town of Hampton, Iowa. While loading gravel, one of the workmen, Lars C. Jensen, noticed something sticking out of the gravels that resembled a horn. Upon closer examination it was found to be a giant tusk, the largest of its kind, according to the best information available, ever found. The tusk was complete before it was broken by the workmen. The length was 11 feet, 7½ inches, …


The Equilibrium Relations Of Nickel Sulfide With Copper And Sodium Sulfides, Walter A. Hamilton Jan 1934

The Equilibrium Relations Of Nickel Sulfide With Copper And Sodium Sulfides, Walter A. Hamilton

Bachelors Theses and Reports, 1928 - 1970

The equilibrium relations of many of the metallic sulfides have long been a source of scientific and commer­cial interest, of particular interest, are the sulfides of nickel and copper, since the economic recovery of both of these useful metals, from their ores, involves the formation of a sulfide at some stage of the operations.


A Mounted Skeleton Of Megabelodon Lulli, Erwin Hinckley Barbour Jan 1934

A Mounted Skeleton Of Megabelodon Lulli, Erwin Hinckley Barbour

Bulletin of the University of Nebraska State Museum

A skeleton of Megabelodon lulli, partly composite, was mounted in the laboratory May 31, 1933, and was formally installed and placed on exhibition in Elephant Hall, June 7, 1933.


Test 222: John Deere A, Nebraska Tractor Test Lab Jan 1934

Test 222: John Deere A, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere A

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 225: Caterpiller Model R-2, Nebraska Tractor Test Lab Jan 1934

Test 225: Caterpiller Model R-2, 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 230: Mccormick-Deering Tractractor "T-40" Diesel, Nebraska Tractor Test Lab Jan 1934

Test 230: Mccormick-Deering Tractractor "T-40" 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 …


Effect Of Manganese And Arsenic Upon Current Efficiency In The Deposition Of Zinc From Zinc Sulphate Solution, Justin Kelly Jan 1934

Effect Of Manganese And Arsenic Upon Current Efficiency In The Deposition Of Zinc From Zinc Sulphate Solution, Justin Kelly

Bachelors Theses and Reports, 1928 - 1970

Throughout the entire experiment the electrolysis were conducted in an eight-hundred cubic centimeter beaker. An excellent circulation of the solution was assured by means of an electric stirrer, vigorous gas evolution from the anodes, and by means of a regulated feed-discharge system. By means of this balance, solution of the same impurity concentration as that of the electrolyte was fed in the cell just as fast as the discharge was syphoned out.


Test 223: Allis-Chalmers Model Wc, Nebraska Tractor Test Lab Jan 1934

Test 223: Allis-Chalmers Model Wc, 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 226: Caterpiller Model 22, Nebraska Tractor Test Lab Jan 1934

Test 226: Caterpiller Model 22, 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 224: Caterpiller Model R-5, Nebraska Tractor Test Lab Jan 1934

Test 224: Caterpiller Model R-5, 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 228: Caterpiller Model 22, Nebraska Tractor Test Lab Jan 1934

Test 228: Caterpiller Model 22, 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 229: Mccormick-Deering "W-12" (Kerosene), Nebraska Tractor Test Lab Jan 1934

Test 229: Mccormick-Deering "W-12" (Kerosene), 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 227: Caterpiller Model R3, Nebraska Tractor Test Lab Jan 1934

Test 227: Caterpiller Model R3, 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 231: Mccormick-Deering "W-12" (Gasoline), Nebraska Tractor Test Lab Jan 1934

Test 231: Mccormick-Deering "W-12" (Gasoline), 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 221: Mccormick Deering Farmall F-20, Nebraska Tractor Test Lab Jan 1934

Test 221: Mccormick Deering Farmall F-20, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


The Nebraska Meteor And Meteorite Of August 8, 1933, Erwin Hinckley Barbour, C. Bertrand Schultz Jan 1934

The Nebraska Meteor And Meteorite Of August 8, 1933, Erwin Hinckley Barbour, C. Bertrand Schultz

Bulletin of the University of Nebraska State Museum

At approximately 10:30 a. m., mountain standard time, on August 8, 1933, a large meteor, traveling in a westerly direction, exploded over the panhandle of Nebraska. The phenomenon was witnessed by many citizens throughout the region, and by a number of students from the University of Nebraska, who were engaged at the time in palaeontological field work in northwestern Nebraska .


Butyl And Ethanol Ethers Of The Ortho, Meta And Para Xenols., Mary Agatha O'Neill Jan 1934

Butyl And Ethanol Ethers Of The Ortho, Meta And Para Xenols., Mary Agatha O'Neill

Electronic Theses and Dissertations

No abstract provided.


Practical Vacuum Drying Theory., John W. Ridgway Jan 1934

Practical Vacuum Drying Theory., John W. Ridgway

Electronic Theses and Dissertations

No abstract provided.


The Production Of Oxalic, Citric, And Gluconic Acids From Plantation Molasses, John A. Ruth Jan 1934

The Production Of Oxalic, Citric, And Gluconic Acids From Plantation Molasses, John A. Ruth

University of the Pacific Theses and Dissertations

This research was undertaken for the purpose of developing a process for producing citric and gluconic acids from plantation molasses.

There is an evident need for such a process. At the present time, these acids are being produced by processes in which refined sugar is the principal raw material. If molasses could be used in place of refined sugar, the cost of raw materials would be reduced by approximately ninety percent. In addition, a waste product would be utilized.

The scope of this problem is very broad. Its solution will involve the solving of many problems of widely varying natures. …


Titanous Chloride As A Standard Reducing Agent, Alfred R. Armstrong Jan 1934

Titanous Chloride As A Standard Reducing Agent, Alfred R. Armstrong

Dissertations, Theses, and Masters Projects

No abstract provided.


Geological Phases Of Soil Erosion Investigation And Control In Nebraska, G. E. Condra Jan 1934

Geological Phases Of Soil Erosion Investigation And Control In Nebraska, G. E. Condra

Conservation and Survey Division

No abstract provided.


The Relation Of The Native Forest Cover To The Physical And Chemical Nature Of The Soils Of The Mammoth Cave National Park Area, Sheppard Walker Aug 1933

The Relation Of The Native Forest Cover To The Physical And Chemical Nature Of The Soils Of The Mammoth Cave National Park Area, Sheppard Walker

Masters Theses & Specialist Projects

This study was undertaken for the purpose of determining the relation existing between the native forest cover and the chemical and physical properties of the soils of the Mammoth Cave National Park area. The study was suggested by certain references in the literature to a correlation existing between forest cover and the geological, chemical and physical nature of soils of this area. The recent attempt at reforestation in the Mammoth Cave National Park area renders such a study timely, and it is believed that the results reported in this paper will materially aid the Mammoth Cave National Park Commission and …


A Study On The Liesegang Phenomenon, Earl Francis Rothemich Jun 1933

A Study On The Liesegang Phenomenon, Earl Francis Rothemich

Honors Theses

This work is a continuation of an attempt to explain the Liesegang Phenomenon by using probing electrodes inside the gel. A study of what happens as one salt diffuses into a gel containing another salt with the precipitation of the reaction product in the gel, as well as the case of diffusion of a salt into a gel containing a small amount as the same salt has been made.

By the use of the probing electrodes it is possible to actually get inside the gel and in this manner observe how the concentration of the salt in the gel changes …


A Study Of The Effect Of Quinhydrone On The Time Of Set Of Silicic Acid Gells And Of The Effect Of Silicic Acid Gel On The Determination Of Ph By The Quinhydrone Electrode, James E. Malone Jun 1933

A Study Of The Effect Of Quinhydrone On The Time Of Set Of Silicic Acid Gells And Of The Effect Of Silicic Acid Gel On The Determination Of Ph By The Quinhydrone Electrode, James E. Malone

Honors Theses

The studies discussed in this report are supplementary to the work being done at Union College on silicic acid gels. In as much data has been taken in this work using pH as determined by the quinhydrone electrode, it was desired that a study be made of the effect of quinhydrone on the gel and of gel on the quinhydrone determinations. The pH of gels during their setting has been worked on and the first part of the experiment deals with the effect of quinhydrone on the time of set of silicic acid gel. Then it was desired to know …


The Thermal Dissociation Of Lithium Hydride, Benjamin M. Walker Jun 1933

The Thermal Dissociation Of Lithium Hydride, Benjamin M. Walker

Honors Theses

In previous work at the Union College laboratory a method was finally developed which overcame the difficulties of the earlier studies of calcium-hydrogen equilibrium. The results obtained were in good agreement with the best work of other investigators. In the present work, an attempt was made to extend this method to a study of the lithium-hydrogen equilibrium.


Precipitations In Gels, Bernard Freeman Jun 1933

Precipitations In Gels, Bernard Freeman

Honors Theses

Numerous investigations of reactions in gels have been conducted since Liesegang’s1 discovery, in 1896, of the periodic nature of silver chromate. Liesegang obtained rhythmic bands by the diffusion of silver nitrate in a gel containing K2Cr2O7.


A Study Of The Velocity Of Ions In Silica Gels When Under The Influence Of A Potential, John Galaba Jun 1933

A Study Of The Velocity Of Ions In Silica Gels When Under The Influence Of A Potential, John Galaba

Honors Theses

There is speculation among chemists as to the structure of gels. In an effort to get information on this subject, chemists have studied the properties of and reactions in gels. The results have led to conflicting theories. This work measuring the velocity of ions in silica gel has been done in the hope that it may add to the knowledge of the behavior of gels and furnish a further clue towards the correct structure of silica gels.


A Brief Study Of The Cherokee Formation Outcrop In Kansas, Roland G. Holmes Jun 1933

A Brief Study Of The Cherokee Formation Outcrop In Kansas, Roland G. Holmes

Electronic Theses & Dissertations

The Cherokee formation is one of the important rock formations of Kansas. There has been much work done upon the coal beds of this formation but so far as is shown by a search of the available literature, there has been no work carried on making a study of the rock beds of the formation by means of chemical analysis.

This paper is an endeavour to do three things: (1) to make a brief study of the rocks of the Cherokee formation at various horizons, (2) to attempt to show by chemical analysis the position of the land mass from …


Leaching Copper Minerals In The Butte District, Kenneth C. Bellows May 1933

Leaching Copper Minerals In The Butte District, Kenneth C. Bellows

Bachelors Theses and Reports, 1928 - 1970

The history of mining in Butte is woven about three of our principal metals. The gold placers first attracted the attention of miners in 1863, and reached their peak production in 1867. Silver was the second metal mined, and this operation required the erection of large mills with a consequent increase in mining activity that made the district a prominent producer. Although the presence of copper in the silver ore had been known, the credit for the first development of the copper veins is due Senator W. A. Clark. The original Colusa, Mining Chief, and Gambetta claims were developed to …