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Mathematicians And Royalty: A Historical Survey, Loren W. Pixley

Masters Theses

No abstract provided.

38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Some Chemical Changes Resulting From Industrial Waste Disposal In The Ouachita River, Carl E. Hoffman

Journal of the Arkansas Academy of Science

No abstract provided.

A Polarographic Study Of Respiration In A Blue-Green Alga, Samuel Leonard Cooke Jr.

Master's Theses

The study of many aspects of physiology is accomplished by the study of respiration under varied conditions. For this purpose, a simple, rapid, and relatively accurate respirometer would be useful. This project was undertaken to investigate the possibility of adapting previously described polarographic techniques to the measurement of respiration.

The Synthesis Of 10-Methyl-3, 4-Benzpyrene And 8,10-Dimethyl-3, 4-Benzpyrene, Jules Adelfang

Chemistry and Chemical Biology ETDs

In 1953 Cook, Hewett, and Rieger found a highly carcinogenic hydrocarbon in coal tar. By a variety of solvent extraction methods, fractional distillation, and crystallization several pure hydrocarbons were isolated from the crude pitch. Two new pentacyclic aromatic hydrocarbons were isolated and since only small quantities of them were available it was decided to ascertain their structures by synthesis instead of degradetive experiments. The hydrocarbon samples were obtained with great difficulty from two tons of crude pitch. The problem was simplified since ten of the possible fifteen pentacyclic hydrocarbons were known. From certain similarities of these hydrocarbons to perylene its …

The Formal Science Background Of Students Enrolled In General Science Classes In Dewitt High School, Charles O. Foreman

Dissertations and Theses @ UNI

No abstract provided.

Press Reports (1953), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

An Investigation Of Some Changes In The Chemical Composition Of Arterial Tissue Which Correlate With The Development Of Arteriosclerosis, Richard Dee Strickland

Chemistry and Chemical Biology ETDs

Arteriosclerosis is one of the major health problems confronting people of middle and advanced age. The disorder, commonly called "hardening of the arteries", is a contributing factor in more deaths than any other ailment.

Stream Pollution, Ruth Patrick

United States Environmental Protection Agency: Publications

This paper discusses the various ways in which aquatic organisms may be of use in solving problems associated with waste disposal. Since many state and federal laws set forth that nothing may be discharged that is deleterious to aquatic life, the most expedient way to determine the effect of an effluent is to study the aquatic organisms themselves.

In every river that has not been adversely affected by pollution there is a great variety of aquatic life. These organisms do not represent a great mass of living things, but rather they are organized into an intricately balance systems, often referred …

An Annotated List Of The Orthoptera Of Nebraska Part Ii The Tettigidae And Acrididae, Harold A. Hauke

Bulletin of the University of Nebraska State Museum (1924–2023)

This is the second of a series of papers on the Orthoptera of Nebraska. It is a continuation of the revision of an unpublished thesis on this subject by the author in 1934.

Comments On The Bacillariophycaea Of North Central Arkansas, Albert Robinson Jr.

Journal of the Arkansas Academy of Science

No abstract provided.

The Monadnock Volume 27, Number 1, December 1952, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 27, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

A Statistical Review Of 436 Submucous Resections With Post-Operative Results Of 338 Cases, D. Wilson Hales

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Limnological Studies In Arkansas. I. Physico-Chemical And Net Plankton Studies Of Lake Fort Smith In Its Fourth Year Of Impoundment, Carl E. Hoffman, David Causey

Journal of the Arkansas Academy of Science

No abstract provided.

Great Salt Lake Beach Plan, Planning Commission; Salt Lake County, Ut

Elusive Documents

No abstract provided.

Progress Report: Chemical Quality Of The Surface Waters In The Loup River Basin, Nebraska, John G. Connor

United States Geological Survey: Publications

The Loup River and its tributaries transport moderate amounts of siliceous minerals from the sand hills region of north-central Nebraska to the Platte River near Columbus, Nebr. Predominant chemical characteristics of these waters are a high percentage of silica, moderate hardness, and a low percentage of sodium. The composition of the Loup River water is influenced by the geologic formations through which ground water, a major contributor to the flows of the Loup River branches, has percolated. Investigation of water quality at or near proposed dam sites in the Loup River basin indicates that if soil and drainage conditions are …

Preparation Of 3-Methylphenanthrene, Yvonne C. Bestler

Bachelors’ Theses

The year 1929 witnessed the opening expansion of the previously small list of naturally occurring phenanthrene compounds. The new groups of substances included were as strikingly different in their actions on animal organisms as they were similar in structure.

Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.

Bachelors Theses and Reports, 1928 - 1970

The mines at San Jose which are within the Wadley unit are the largest antimony mines in Mexico. These mines produce more than half of the antimony produced by the company from its mining operations. Since the time of the author's connection with the company, a number of changes have been made in planning of development work, handling of labor, methods of mine development, cost improvement, and other problems inherent in the successful guidance of an operation.

The Monadnock Volume 25, Number 1, December 1950, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 25, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

Application Of X-Ray Technique To The Detection Of Internal Insect Infestation Of Grain, Max Milner, Milford R. Lee, Robert Katz

Robert Katz Publications

During the course of a comprehensive investigation of methods for the determination of internal insect infestation in commercial wheat, radiographic techniques have been developed at this station which provide satisfactory delineation of internal infestation. We have applied these techniques to the observation of the growth of such insects as granary weevil, Sitophilus granaries L., and rice weevil, Sitophilus oryza L., from the hatching of the egg within the kernel through larval and pupal growth to emergence as a mature insect. Although considerable detail is always lost in the reproduction of radiographs during engraving and printing, the accompanying figures (1, …

Soft X-Rays, William F. Roherty

Bachelors’ Theses

Traditionally, radiation of those wavelengths produced by a potential of from 2 to 25kv. has been classified as "Grenz" or "soft" x-rays. The peculiar property of this radiation is its low penetrating power. While being transparent to more energetic radiation, animal tissue and similar materials are sufficiently opaque to Grenz rays as to be studied in detail. Since the radiation is of the continuous type, it can be made soft enough to reveal any object, providing, of course, that the tube window and object medium be not opaque. Soft x-rays are produced in exactly the same manner as others, except …

It's Time To Take Stock

United States Environmental Protection Agency: Publications

Likening colleges and universities to the automobile industry may seem far-fetched, but is it? Each is engaged in fashioning and selling necessary products- one trained men, the other mechanical equipment. Both entered the post-war years with production at low ebb; unable to satisfy pent-up customer demands. Time and high-speed assembly lines have bridged the gap of gas buggy shortage. The impact of selective buying by a discriminating public is now real cause for concern among some of the motor moguls. Rumor has had it that schools teaching wildlife management are overproducing. We decided to gather facts and opinions at the …

Public Health Reports, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

Preliminary tests with DDT for the control of mosquitoes, forest insects, and agricultural pests demonstrated that it was toxic to a wide variety of animal life. Because there were indications that the new insecticide would be widely used, apprehension was expressed by some groups that its extensive or indiscriminate use would cause extensive harm to wildlife.

The desirability of carefully controlled use was early recognized by those in charge of extensive programs for the control of insects of public health importance. A joint statement of policy for the use of DDT issued early in 1945 (1) by the Army and …

The Synthesis And Insecticidal Activity Of Some Halogenated Aromatic Ethers., Tien-Chih Chen

LSU Historical Dissertations and Theses

No abstract provided.

The Monadnock Volume 24, Number 1, December 1949, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 24, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana

Bachelors Theses and Reports, 1928 - 1970

The factors that influence the choice of a method for treat­ment of an ore comprise the technical and economic limitations and advantages, derived in detail and balanced according to the exigencies of the particular situation.

Development Of The Potential Weber Basin Project, Utah: Bonneville Basin, United States Department Of The Interior

Elusive Documents

No abstract provided.

The Synthesis And Physical Properties Of Several Aromatic Fluorides, Charles J. Basso

Bachelors’ Theses

Since the advent of the Manhattan Project, more attention is being focused on fluorine compounds. Most of the inorganic fluorides are well known and are being used daily in industry. However, the realm of organic fluorides has not been investi­gated much up until recently, mainly because of the lack of safe and efficient fluorination reactions. Only within the last twenty-five years have reliable, indirect methods of fluorination been developed.

The purpose of this thesis is to give an outline of the most important fluorination processes, speaking of laboratory scale operations. The author illustrates the synthesis of an· aromatic fluoride by …

Geological Survey Circular 346: First Fourteen Years Of Lake Mead, Harold E. Thomas

Publications (WR)

This circular summarizes the results of recent studies of Lake Mead and its environs. Area-capacity tables, prepared on the basis of a hydrographic survey of the lake in 1948-49, show that the capacity of the reservoir was reduced 4. 9 percent during the first 14 years after Hoover Dam was completed, but the usable capacity was reduced only 3.2 percent. Practically all of this reduction was caused by accumulation of sediment in the reservoir. Studies of inflow and outflow indicate that the reservoir has a total storage capacity about 12 percent greater than that shown by the area-capacity table, because …

An Investigation Of Several Electrode Combinations In An Effort To Find A Suitable Combination For The Potentiometric Titration Of Fluorides Using Cerous Nitrate As The Titrating Reagent, Miriam Knoebel

Bachelors’ Theses

The increasing commercial and industrial interest in compounds of fluorine as important industrial materials, and the importance of the relation of fluorides in water and foods to human health, has necessitated an accurate and rapid method for the quantitative determination of fluorides.