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Articles 52081 - 52110 of 52468
Full-Text Articles in Entire DC Network
A New Elasmosaur From The Eagle Ford Shale Of Texas: The Elasmosaur And Its Environment, Ellis W. Shuler
A New Elasmosaur From The Eagle Ford Shale Of Texas: The Elasmosaur And Its Environment, Ellis W. Shuler
Fondren Science Series
When Mr. Andy Anderson donated to Southern Methodist University the petrified skeleton of a great marine lizard found on his plantation near Cedar Hill, Texas, he said, "Write about it so common folks can understand." In view of this request, the description of this new and important specimen has been divided into two parts. Part I is a technical description of the skeleton written by S. P. Welles, Principal Museum Paleontologist, University of California (Berkeley), an authority on the elasmosaur group to which the specimen belongs. Mr. Welles completed his manuscript, Part I of Number 1 in the Fondren Science …
Microorganisms And Soil Structure, T. M. Mccalla
Microorganisms And Soil Structure, T. M. Mccalla
Department of Agronomy and Horticulture: Faculty Publications
SUMMARY
Laboratory tests were made to determine the effectiveness of different compounds and microbial groups in increasing the stability of Peorian loess lumps against the action of falling water drops. The influence of these on percolation tests in the laboratory was also determined.
Many organic substances-dextrose, sucrose, starch, peptone, cullulose, and gum arabic-did not themselves contribute directly to soil-structure stability, though these substances do furnish energy material for soil microorganisms, which can convert them readily into either microbial tissue or decomposition products that increase soil-structure stability. Lignin, proteins, oils, fats, waxes, resin, and paraffin increased the stability of lumps of …
Science And Supposition In Evolution, Geology, And Astronomy, D. A. Sommer
Science And Supposition In Evolution, Geology, And Astronomy, D. A. Sommer
Stone-Campbell Books
No abstract provided.
Genetic And Taxonomic Studies In Gilia: I. Gilia Capitata, Verne Grant
Genetic And Taxonomic Studies In Gilia: I. Gilia Capitata, Verne Grant
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Ecology And Silviculture Of Whitecedar And Associated Hardwoods In Southern New Jersey, Silas Little Jr.
Ecology And Silviculture Of Whitecedar And Associated Hardwoods In Southern New Jersey, Silas Little Jr.
Yale School of the Environment Bulletin Series
No abstract provided.
Leaflet No 1003 - The Salt Problem In The Wheat Belt, G. H. Burvill
Leaflet No 1003 - The Salt Problem In The Wheat Belt, G. H. Burvill
Bulletins 1 - 2999
IN the wheat belt of Western Australian bare patches in farm paddocks are often seen. Many are bare, or almost bare, because of too much salt in the soil. The excess of salt prevents the germination of seeds, or kills living plants, because it causes the water supply for germination or growth to be cut off. This salt problem is so serious in places that single farms or groups of farms have been ruined; wheat growing on them has become unprofitable.
Two Fungus Diseases Of Soybeans., Quintin Lee Holdeman
Two Fungus Diseases Of Soybeans., Quintin Lee Holdeman
LSU Historical Dissertations and Theses
No abstract provided.
William D. Moore (1824-96), Amateur Geologist Of Mississippi, S. W. Geiser
William D. Moore (1824-96), Amateur Geologist Of Mississippi, S. W. Geiser
Field and Laboratory
It is now nearly ninety years since William D. Moore, then professor of English at the University of Mississippi, collaborated with Eugene W. Hilgard on his famous geological report of that State. The archivists and historians have lost Moore from their records (if, indeed, they ever sought seriously for information of him), so that what was written five years ago of W. D. Moore (in another connection) remains as true as it was then: "No record of whence he came, or whither went (when the University closed in 1861), is to be found at the University." Since the present writer …
A Study Of Saponification Rates As Characteristic Of Esters, Thomas F. Mitchell Jr.
A Study Of Saponification Rates As Characteristic Of Esters, Thomas F. Mitchell Jr.
Bachelors’ Theses
The saponification of esters has been the subject of considerable study, and the technology of manipulation of the reaction well defined. As a result, the reaction has become a quantitative standard for ester analysis. However the comparison of the rates of this reaction with various esters as charaeteristic of them has received little consideration compared to the course of the reaction. The work of Mr. F. E. Adler on the adaptation of fat constants to waxes suggested the problem. The thesis will attempt to ascertain any significant differences in the saponification rates of various esters with regard to their characterization.
Consumptive Use Of Water Studies In The Colorado River Area Of Utah, J. Y. Christiansen
Consumptive Use Of Water Studies In The Colorado River Area Of Utah, J. Y. Christiansen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
At the request of the State Engineer of Utah, a cooperative study beginning January 1, 1948, was initiated by the Utah Agricultural Experiment Station and the Division of Irrigation, U. S. Soil Conservation Service. These research agencies are being assisted financially, and by consultation, by the State Engineer who has also made arrangements for certain observations to be made and furnished by the U. S. Geological Survey, U. S. Weather Bureau, and the U. S. Bureau of Reclamation. The objective of this study is to obtain basic information regarding the consumptive use of water by agricultural crops, native vegetation, and …
The Sixty-First Session Of The Iowa Academy Of Science, April 15 And 16, 1949, Iowa Academy Of Science
The Sixty-First Session Of The Iowa Academy Of Science, April 15 And 16, 1949, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
The Future Of Biology Majors, Mary M. Keeffe
The Future Of Biology Majors, Mary M. Keeffe
Journal of the Minnesota Academy of Science
No abstract provided.
Application Of Schuepp's Method To Form Analysis Of The Shoot Apex In Maize, Otto L. Stein, Ernst C. Abbe
Application Of Schuepp's Method To Form Analysis Of The Shoot Apex In Maize, Otto L. Stein, Ernst C. Abbe
Journal of the Minnesota Academy of Science
No abstract provided.
Report From The Chairman Of The Committee On The Preservation Of Natural Conditions, A. N. Wilcox
Report From The Chairman Of The Committee On The Preservation Of Natural Conditions, A. N. Wilcox
Journal of the Minnesota Academy of Science
No abstract provided.
An Annotated List Of The Orthoptera Of Nebraska Part I The Blattidae, Mantidae And Phasmidae, Harold A. Hauke
An Annotated List Of The Orthoptera Of Nebraska Part I The Blattidae, Mantidae And Phasmidae, Harold A. Hauke
Bulletin of the University of Nebraska State Museum (1924–2023)
This paper is the first of a series on the Orthoptera of Nebraska. In 1932, while a graduate student at the University of Nebraska, the author began a taxonomic study of the Orthoptera, the result of which was an unpublished List of the Othoptera of Nebraska. The list has been studied and revised.
Separation Of The Selenium Compounds In Seleniferous Plant Protein Hydrolysates By Paper Partition Chromatography, Arnold L. Smith
Separation Of The Selenium Compounds In Seleniferous Plant Protein Hydrolysates By Paper Partition Chromatography, Arnold L. Smith
Electronic Theses and Dissertations
In 1943 Franke reported that the protein of "allolied" or "toxic" wheat carried the toxicant, and Franke and Painter in 1935 reported that those "toxic" proteins contained selenium which was in organic combination in the protein. There has been much speculation regarding the possibility of selenium replacing sulfur in the amino acids cysteine and methionine. The toxicity of selenium in selenium analogs of these compounds is similar to that of selenium occurring naturally in proteins seleniferous cereals, which indicated that the selenium may be present in the proteins as the analogue of these sulfur amino acids.
Preliminary Geomorphological Studies Of The Lime Creek Area & Preliminary Report On The Lime Creek Sites: New Evidence Of Early Man In Southwestern Nebraska, C. Bertrand Schultz, Gilbert C. Lueninghuener, W. D. Frankforter
Preliminary Geomorphological Studies Of The Lime Creek Area & Preliminary Report On The Lime Creek Sites: New Evidence Of Early Man In Southwestern Nebraska, C. Bertrand Schultz, Gilbert C. Lueninghuener, W. D. Frankforter
Bulletin of the University of Nebraska State Museum (1924–2023)
PALEONTOLOGICAL and archaeological discoveries were made near Cambridge, Nebraska, by the University of Nebraska State Museum field party in the spring of 1947 (Schultz and Frankforter, 1948, pp. 279-280) . Fossils and artifacts were found in situ at the base of a fifty-foot terrace on Lime Creek (University of Nebraska State Museum Localities Ft-41 and Ft-42) and on Medicine Creek just below the mouth of Lime Creek (Ft-50). Lime Creek is located (Fig. 1) in southwestern Nebraska in the southeastern part of Frontier County. It is a tributary of Medicine Creek which in turn is a tributary to the Republican …
The Sixtieth Session Of The Iowa Academy Of Science And The Fifteenth Convention Of The Junior Academy Of Science Of Iowa, April 16 And 17, 1948, Iowa Academy Of Science
The Sixtieth Session Of The Iowa Academy Of Science And The Fifteenth Convention Of The Junior Academy Of Science Of Iowa, April 16 And 17, 1948, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
A New Sciurid Of Blancan Age From Kansas And Nebraska, Claude W. Hibbard
A New Sciurid Of Blancan Age From Kansas And Nebraska, Claude W. Hibbard
Bulletin of the University of Nebraska State Museum (1924–2023)
The collecting of vetebrate fossils from deposits of Blancan age in Kansas, Nebraska, and Texas during the past twelve years has revealed many interesting forms. Some species have been found to have wide geographic distribution. A large sciurid related to the woodchucks has been recognized from both Kansas and Nebraska and is here described as a new genus and species.
An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin
An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin
Master's Theses or Doctor of Nursing Practice
Biology is the science of life and therefore deserves every consideration in the high school curriculum. The world today is making an extensive and intelligent use of biology in solving problems of personal and social significance. Scientists have discovered that certain phases of the subject are more important to man's welfare than others. For this reason it is essential that biology be presented to our high school students not as isolated facts, but in relation to the problem of living. Through this science of living things, the student can gain a healthy respect for facts and for conclusions based on …
Brief Short-Title List Of Published Works On The History Of Science, Samuel W. Geiser, Bessie T. Geiser
Brief Short-Title List Of Published Works On The History Of Science, Samuel W. Geiser, Bessie T. Geiser
Field and Laboratory
The present brief list was compiled primarily for the use of students in a course on the History of Science offered by the senior author at Southern Methodist University. It is far from complete: scholars conversant with the field will note omission of works they consider of primary importance, and the inclusion of others, to them of secondary interest. We are not sure that in every case our omissions and inclusions are fully defensible; but it is believed that this bibliography includes a very large proportion of the best works on the subject in hand.
Plan Of Development For Valley Gravity Project, Julius A. Krug, Michael W. Straus, Wesley R. Nelson
Plan Of Development For Valley Gravity Project, Julius A. Krug, Michael W. Straus, Wesley R. Nelson
Lower Rio Grande Valley Curated Material
"The Valley Gravity Project Plan has been formulated to furnish an adequate and dependable irrigation water supply for fertile and productive area in the Lower Rio Grande Valley, Texas, It would also provide drainage works, which would remove the threat of destruction of the economy of the area due to effects of a high water table and salt accumulations. The project works would permit generation of the maximum practicable amount of electrical energy which otherwise would be required to operate irrigation pumping plants. Other incidental benefits include fish and wildlife conservation, recreation and flood control."
Project report no. 5-0619-0
The Fifty-Ninth Session Of The Iowa Academy Of Science And The Fourteenth Convention Of The Junior Academy Of Science Of Iowa, April 18 And 19, 1947, Iowa Academy Of Science
The Fifty-Ninth Session Of The Iowa Academy Of Science And The Fourteenth Convention Of The Junior Academy Of Science Of Iowa, April 18 And 19, 1947, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.