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Articles 301501 - 301530 of 302512

Full-Text Articles in Physical Sciences and Mathematics

Conservation Survey Of Nemaha County, Nebraska, G. E. Condra Jan 1918

Conservation Survey Of Nemaha County, Nebraska, G. E. Condra

Conservation and Survey Division

No abstract provided.


Front Matter May 1917

Front Matter

Journal of the Minnesota Academy of Science

The last address of the late Newton Horace Winchell. Originally presented before the Iowa Academy of Sciences, at Cedar Falls, Iowa, April 24, 1914.


The Potash Industry Of Nebraska, George E. Condra Jan 1917

The Potash Industry Of Nebraska, George E. Condra

George E. Condra Publications

No abstract provided.


A Short Story As Regards The Drainage Of Salt Creek, G. E. Condra Jan 1917

A Short Story As Regards The Drainage Of Salt Creek, G. E. Condra

Conservation and Survey Division

No abstract provided.


Preliminary Report On The Clay Industry Of Nebraska, E. H. Barbour Jan 1917

Preliminary Report On The Clay Industry Of Nebraska, E. H. Barbour

Conservation and Survey Division

No abstract provided.


The Conservation Of Foods Jan 1917

The Conservation Of Foods

Conservation and Survey Division

No abstract provided.


Preliminary Report On The Clay Industry Of Nebraska, Erwin Hinckley Barbour Jan 1917

Preliminary Report On The Clay Industry Of Nebraska, Erwin Hinckley Barbour

Conservation and Survey Division

No abstract provided.


Drainage Districts Of Southeastern Nebraska, Calvin Turner Moore Jan 1917

Drainage Districts Of Southeastern Nebraska, Calvin Turner Moore

Conservation and Survey Division

Throughout certain parts of the United States the importance of drainage is receiving increased recognition each year. The scope of investigations and operations covers many localities that are affected with "springy" lands, swamps, shallow lakes, overflowed lands, and tide lands.


Operator's Instruction Manual: Case Va, Nebraska Tractor Test Lab Nov 1916

Operator's Instruction Manual: Case Va, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


The Chemistry Of Selected Food Stuffs And Condiments, Leslie F. Rutledge May 1916

The Chemistry Of Selected Food Stuffs And Condiments, Leslie F. Rutledge

Chemistry Honors Papers

This 17 page thesis discusses the composition of various foods, including milk, butter, bread and wine.


The Cost Of Producing Electricity At The Hamilton, Missouri Light And Power Company, Bernerd William Adams Jan 1916

The Cost Of Producing Electricity At The Hamilton, Missouri Light And Power Company, Bernerd William Adams

Bachelors Theses

"For those seeking information on the cost of producing electricity in steam plants, an unlimited amount of data may be found in the technical journals and text books. This information, however, is obtained from a careful analysis of the daily and hourly records kept by the largest central stations, hence, production costs are available only where the yearly out-put is several million kilowatt-hours. the small isolated stations of from one hundred to two hundred kilowatt capacity have not as a rule, become progressive enough to keep a complete record of operating costs...The test hereinafter reported was conducted from August 3rd. …


Leaching Flue Dust, Edwin Alexander Kayser Jan 1916

Leaching Flue Dust, Edwin Alexander Kayser

Bachelors Theses

"The usual method of treatment has been to charge the "flue dust" into reverberatories and smelt it with the regular charge of calcined ore. There was a consequent cost of handling and a serious loss thru furnace draft and boiling, due to the fine state of division of the material and the presence of sulphates, acid, and moisture.

The object of the paper is to treat this material by some leaching process, which will eliminate the above enumerated losses, and at the same time present the finished product at a lower cost, and with a higher extraction per ton, than …


A Study Of A Certain Filled-Sink Ore Deposit, Azmon Thurman Dunham Jan 1916

A Study Of A Certain Filled-Sink Ore Deposit, Azmon Thurman Dunham

Bachelors Theses

"This mine, which is located about 3-1/2 miles southeast of Sullivan in the extreme northeast corner of Crawford County, Mo., was first known as the Sullivan and Bridoll Mine of the old Hamilton Iron Company. It has been operated discontinuously since about 1870. Until 1904 it was worked solely as an iron mine, but at that time development work for copper was started, and from 1905 to 1909 to mine treated only this metal. It is not known how many pounds of copper the mine has produced, but during one 20 day run in 1904 of which there is record, …


Die Grundlage Der Allgemeinen Relativitätstheorie, Albert Einstein, Leipzig : Verlag Von Johann Ambrosious Barth Jan 1916

Die Grundlage Der Allgemeinen Relativitätstheorie, Albert Einstein, Leipzig : Verlag Von Johann Ambrosious Barth

Before the Textbook

Albert Einstein's first exposition on the theory of relativity first printed in the journal "Annalen der Physik" Band 49, 1916.


Flotation Applied To Silicate Sludge, Yaro Klepel, Greene Erskine Jan 1916

Flotation Applied To Silicate Sludge, Yaro Klepel, Greene Erskine

Bachelors Theses

"Within the past few years great success has been made of the flotation of sulfids, and to a certain extent of carbonates.

Since sulfids are easily recovered by flotation it seems practicable that silicates could be made to float by first sulfidizing them, and then subjecting them to ordinary flotation treatment.

This problem involves the treatment of a silicate sludge obtained from the Joplin district, the sludge will easily pass through a 250 mesh screen. At the present time this sludge is being sent to the tailings pond.

The experimental work of this thesis was done along the line of …


Some Chemical Problems In Geology, Reginald Scott Dean Jan 1916

Some Chemical Problems In Geology, Reginald Scott Dean

Masters Theses

"This thesis is in the main a compilation of the views held at this institution in regard to the problems discussed as interpreted by the author. No claims for originality are made except in the manner of presentation as the material used has been obtained by conference and class room work with Professor V. H. Gottschalk and Professor G. H. Cox and also to some extent with H. A. Buehler, State Geologist. On the other hand the material is an expression of these ideas as assimilated by the author and hence may in certain cases differ radically from the views …


The Natural Fuels Of Nebraska, Erwin H. Barbour Jan 1916

The Natural Fuels Of Nebraska, Erwin H. Barbour

Conservation and Survey Division

No abstract provided.


A Preliminary Report Of The Alkali Resources Of Nebraska, E. H. Barbour Jan 1916

A Preliminary Report Of The Alkali Resources Of Nebraska, E. H. Barbour

Conservation and Survey Division

No abstract provided.


Some Plant Cuticles From The Graneros Shale, A. C. Whitford Jan 1916

Some Plant Cuticles From The Graneros Shale, A. C. Whitford

Conservation and Survey Division

No abstract provided.


A Description Of Two New Fossil Fungi, A. C. Whitford Jan 1916

A Description Of Two New Fossil Fungi, A. C. Whitford

Conservation and Survey Division

No abstract provided.


Road Problems In Nebraska, G. E. Condra Jan 1916

Road Problems In Nebraska, G. E. Condra

Conservation and Survey Division

No abstract provided.


A Preliminary Report Of The Alkali Resources Of Nebraska, Nebraska Geological Survey Jan 1916

A Preliminary Report Of The Alkali Resources Of Nebraska, Nebraska Geological Survey

Conservation and Survey Division

No abstract provided.


Nebraska Pumicite, E. H. Barbour Jan 1916

Nebraska Pumicite, E. H. Barbour

Conservation and Survey Division

No abstract provided.


A Giant Nebraska Bear "Dinarchtotherium Merriama", E. H. Barbour Jan 1916

A Giant Nebraska Bear "Dinarchtotherium Merriama", E. H. Barbour

Conservation and Survey Division

No abstract provided.


Bulletin No. 139 - The Movement Of Soluble Salts With The Soil Moisture, F. S. Harris May 1915

Bulletin No. 139 - The Movement Of Soluble Salts With The Soil Moisture, F. S. Harris

UAES Bulletins

In irrigated districts, where excessive quantities of water are used, there is usually an accumulation of alkali salts in the soils of the lower lands. These salts are probably dissolved from the soils through which the percolating waters pass and are carried along until the water comes to the surface and is evaporated, when the salts are deposited as a crust at the surface. Many of the most fertile soils of the arid regions have been ruined by the bringing to the surface of soluble salts in such large quantities that the growth of crops is prohibited. The rapidity with …


The Electro Deposition Of Lead In Sugar And Acetate Solutions, Abe Lew Kaplan Jan 1915

The Electro Deposition Of Lead In Sugar And Acetate Solutions, Abe Lew Kaplan

Bachelors Theses

"The experiments, while hardly sufficiently numerous, seemed to indicate that sugars do not have a good effect on cathodic lead deposits"--Conclusion, page 14.


The Electrolysis Of Potassium Lead Tartrate Solutions, Reginald Scott Dean Jan 1915

The Electrolysis Of Potassium Lead Tartrate Solutions, Reginald Scott Dean

Bachelors Theses

"Kahlenberg and Hillyer have shown that lead oxide (PbO) dissolves in neutral potassium tartrate to form a strongly alkaline solution in which the ratio of potassium to lead is 1:1. Since this solution shows a very low concentration of lead ion it might be expected to give a smooth and adherent cathode deposit. The purpose of this thesis is to determine its possible applicability as a refining electrolyte"--page 1.


The Round Ligament Of Nebraska Proboscideans, Erwin H. Barbour Jan 1915

The Round Ligament Of Nebraska Proboscideans, Erwin H. Barbour

Conservation and Survey Division

Comparisons of the acetabula of various mastodons and mammoths common to Nebraska show conclusively that absence of the round ligament is not a characteristic of the proboscidea, as generally accepted. From the specimens in our collections, there is evidence that the ligament was not on! y present, but was uncommonly large and well developed in the earlier Nebraska proboscideans. Examination of material collected since 1891, and preserved in the cabinets of the Nebraska State Museum. and the Morrill Geological Collections, makes it apparent that all Nebraska proboscideans had round ligaments, though perhaps the latest survivors did not.


A New Sabertoothed Cat From Nebraska, Erwin H. Barbour, Harold J. Cook Jan 1915

A New Sabertoothed Cat From Nebraska, Erwin H. Barbour, Harold J. Cook

Conservation and Survey Division

No abstract provided.


Nebraska Fossils Which Excite Common Inquiry, Erwin H. Barbour Jan 1915

Nebraska Fossils Which Excite Common Inquiry, Erwin H. Barbour

Conservation and Survey Division

This paper must not be mistaken for a report on the fossils of Nebraska. It is merely a circular letter to correspondents describing and figuring those fossils only which occasion frequent comment. In two recent papers of the Survey consideration was given to the common minerals and rocks of Nebraska, and it seems opportune to briefly discuss our fossils in a like manner. Probably no other State can boast of such a well-preserved and varied fauna.