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Articles 292531 - 292560 of 293673
Full-Text Articles in Entire DC Network
The Electro Deposition Of Lead In Sugar And Acetate Solutions, Abe Lew Kaplan
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.
A Phenomenon Of The Kansan Drift In Nebraska, Erwin Hinckley Barbour
A Phenomenon Of The Kansan Drift In Nebraska, Erwin Hinckley Barbour
Department of Earth and Atmospheric Sciences: Faculty Publications
Among the minor phenomena of the glacial drift in Nebraska there is one which, though rarely observed by the public, is of interest and should be commended to the attention of naturalists. The reference here is to certain large, well-defined masses or blocks of such materials as sand, gravel, and coarse pebbles, which occur imbedded in the drift clays along with glacial bowlders, and which presumably have been similarly transported and deposited. These masses or blocks vary widely in color, texture, and kind. They also vary from the glacial matrix in which they are found and are the more striking …
Glacial Geology Work Of Prof. N. H. Winchell, F.W. Sardeson
Glacial Geology Work Of Prof. N. H. Winchell, F.W. Sardeson
Journal of the Minnesota Academy of Science
No abstract provided.
Remarks By Dr. Wm. E. Leonard, Wm. E. Leonard
Remarks By Dr. Wm. E. Leonard, Wm. E. Leonard
Journal of the Minnesota Academy of Science
No abstract provided.
Contributions Of N. H. Winchell To The Geology Of The Iron Ranges Of Minnesota, W.H. Emmons
Contributions Of N. H. Winchell To The Geology Of The Iron Ranges Of Minnesota, W.H. Emmons
Journal of the Minnesota Academy of Science
No abstract provided.
Newton Horace Winchell, 1839-1914, Warren Upham
Newton Horace Winchell, 1839-1914, Warren Upham
Journal of the Minnesota Academy of Science
No abstract provided.
Tributes From Early Associates
Tributes From Early Associates
Journal of the Minnesota Academy of Science
No abstract provided.
Words Of Appreciation, O. W. Oestlund
Words Of Appreciation, O. W. Oestlund
Journal of the Minnesota Academy of Science
No abstract provided.
The Storage And Use Of Soil Moisture. Report Of Experimental Substation, North Platte, Nebraska, W. W. Burr
The Storage And Use Of Soil Moisture. Report Of Experimental Substation, North Platte, Nebraska, W. W. Burr
Nebraska Agricultural Experiment Station: Historical Research Bulletins
The profitable cultivation of the non-irrigable lands in west central and western Nebraska is limited by the amount and efficient use of the precipitation. There are tracts of land in the sand hills and minor tracts of badly worn heavier soils where the need of soil fertility is becoming evident. But, in the main, the great problem at present is not one of soil fertility, but of how to get enough water to make use of the fertility now present. The rainfall of this section, which varies from an actual shortage to seldom more than a meager sufficiency, makes it …
Bulletin No. 134 - The Nitric Nitrogen Content In The Country Rock, Robert Stewart, William Peterson
Bulletin No. 134 - The Nitric Nitrogen Content In The Country Rock, Robert Stewart, William Peterson
UAES Bulletins
In many arid sections of Western America there have been reported marked accumulations of nitrates in the cultivated soil. Hilgard,(1) who was the first to observe these accumulations, believed that the nitrates are being formed at the present time by the rapid nitrification of the organic matter contained in the soil. In Colorado there has been considerable trouble with orchards dying; the death of the trees in some cases has been attributed to the excessive accumulations of nitrates in the cultivated soil. These accumulations are due, according to Dr. Headden,(2) to the fixation of atmospheric nitrogen by bacteria now at …
A Chemical Study Of The Enrichment Of Copper Sulfide Ores., John Dustin Clark
A Chemical Study Of The Enrichment Of Copper Sulfide Ores., John Dustin Clark
UNM Bulletins
The author reports on the results of sixty experiments on processes related to the enrichment of the sulfide ores of copper. Also submitted to Leland Stanford Junior University toward the Degree of Doctor of Philosophy.
Portland Cement, Asphalts And Bitumens, George R. Ensminger
Portland Cement, Asphalts And Bitumens, George R. Ensminger
Chemistry Honors Papers
This 37 page thesis classifies and analyzes cements, rock asphalt and bitumen.
Some Phenomena Which Accompany The Electrolysis Of Certain Salt Solutions, When The Electrodes Are Physically Separated By Means Of A Diaphragm Of Solid Gelatine, Containing The Same Salt As Is Used For The Electrolyte: A Study Of The Automatic Termination Of The Electrolysis, When Conducted Under The Above Conditions, Ernest Carl Wagner
Chemistry Honors Papers
This 22 page thesis is a record of work done during the summer of 1910, by Dr. W. H. Stoner, and during the summer of 1912 and the spring of 1914, by the writer, in the Chemical Laboratory of the Medico-Chirurgical College of Philadelphia.
Iii. Phase Change By Reflection – Primarily In The Ultra-Violet, Oliver Gish
Iii. Phase Change By Reflection – Primarily In The Ultra-Violet, Oliver Gish
Department of Physics and Astronomy: Faculty Publications
The first quantitative investigation of absolute phase change was made by Quinckel in 1872. This was followed by that of Wernicke, Wiener, Glan, Hennig, Drude, Koenigsberger and Bender. All these investigations were confined to the visible spectrum except that of Koenigsberger and Bender, who, in addition, measured for a few substances the phase change in the infra-red. So far no measurements of this phenomenon have been made in the ultra-violet.
A Comparison Of Missouri Sandstones, Llewelyn Lodwick
A Comparison Of Missouri Sandstones, Llewelyn Lodwick
Bachelors Theses
"Because of the scarcity of fossils in sandstones, the ages of these stones are difficult to determine except by the fossil bearing rocks either above or below them. Consequently, sandstones, even of the same area, are often separated and correlated with difficulty. It is for this reason that an effort is made to determine a means by which each sandstone may be identified"--Introduction, page 1.
Estelle Angier Science Notebook, M. Estelle Angier
Estelle Angier Science Notebook, M. Estelle Angier
Scrapbooks
1914 science notebook of Estelle Angier (Class of 1914). Class notes, descriptions of experiments, and conclusions. Angier added an additional note at the end of the notebook in 1971.
Two New Fossil Dogs Of The Genus "Crynarctus" From Nebraska, E. H. Barbour
Two New Fossil Dogs Of The Genus "Crynarctus" From Nebraska, E. H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Plant Tissue In The Carboniferous Shales Of Nebraska, Erwin H. Barbour
Plant Tissue In The Carboniferous Shales Of Nebraska, Erwin H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
While exploring the newly discovered Eurypterid beds,1 just one mile south of Peru, Nebraska. November 8, 1912, the writer found unusual amounts of actual plant tissue of Carboniferous age. It seems incredible that it should have been preserved through such a lapse of time. Only the most resistant tissue could have endured. When freshly cleaved, the Eurypterid shales reveal innumerable bits and patches of it, mostly bright red in color.
A Critical Examination Of The Kjeldahl Method For The Determination Of Nitrogen, Edward F. Danforth
A Critical Examination Of The Kjeldahl Method For The Determination Of Nitrogen, Edward F. Danforth
Archived Theses and Dissertations
No abstract provided.
The Commercial Preparation Of Ammonium Nitrate From Ammonium Sulfate And Sodium Nitrate, Carl Emil Lauer
The Commercial Preparation Of Ammonium Nitrate From Ammonium Sulfate And Sodium Nitrate, Carl Emil Lauer
Archived Theses and Dissertations
No abstract provided.
Plant Tissue In The Carboniferous Shales Of Nebraska, E. H. Barbour
Plant Tissue In The Carboniferous Shales Of Nebraska, E. H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
During the season of 1914, field work in the fossil regions was pushed less vigorously than usual owing to lack of funds. Nevertheless some interesting and valuable material was obtained by the Nebraska Geological Survey, notably the great mandible of a new longirostral mastodon from Cherry County, together with associated tusk and bones.
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, Medusina Walcotti, Erwin H. Barbour
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, Medusina Walcotti, Erwin H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
In visiting the quarries of the State, certain quadripartite objects suggesting the form of jelly fishes have long attracted the writer's attention. They are large and coarse, and were assumed to be imitative concretions. However, the total number observed seems to strengthen the probability that they are of organic origin. In the fall of 1913, while conducting a field class through the Burlington Quarries, located about two miles northwest of South Bend, they were noted again in a new locality, and three specimens were obtained. Two of these were unusual examples, and showed sufficient structure to identify them with the …
A New Fossil Horse, "Hypohippus Matthewi", E. H. Barbour
A New Fossil Horse, "Hypohippus Matthewi", E. H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, "Medusina Walcotti", E. H. Barbour
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, "Medusina Walcotti", E. H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
Conservation and Survey Division: Faculty and Staff Publications
During the season of 1914, field work in the fossil regions was pushed less vigorously than usual owing to lack of funds. Nevertheless some interesting and valuable material was obtained by the Nebraska Geological Survey, notably the great mandible of a new longirostral mastodon from Cherry County, together with associated tusk and bones.
The Chemical And Physical Examination Of The Oils From The Seeds Of The Aster, Bachelor's Button, Larkspur, Muskmelon, Okra, Pansy, Snapdragon, Henry Neal Marsh
The Chemical And Physical Examination Of The Oils From The Seeds Of The Aster, Bachelor's Button, Larkspur, Muskmelon, Okra, Pansy, Snapdragon, Henry Neal Marsh
Archived Theses and Dissertations
No abstract provided.
Thomas County Diatomite, C. J. Elmore
Thomas County Diatomite, C. J. Elmore
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Progress In The Study Of Nebraska Diatoma, C. J. Elmore
Progress In The Study Of Nebraska Diatoma, C. J. Elmore
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Note On The Occurrence Of The Mammoth In Sioux County, Nebraska, H. J. Cook
Note On The Occurrence Of The Mammoth In Sioux County, Nebraska, H. J. Cook
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.