The Iowa State University Digital Repository provides open access to the full-text of many theses and dissertations completed at Iowa State University. From this page, you can either browse our theses and dissertations by academic department or by the year of completion.

Some Iowa State theses and dissertations are not eligible for open access. These may be accessible, with some restrictions, via ProQuest/UMI. On the ProQuest site, the full text of Iowa State's digital theses and dissertations can be viewed by members of the Iowa State community (current students, faculty, and staff) or individuals searching from Iowa State campus IP addresses. Others can view only the first 25 pages of a thesis or dissertation from Iowa State

Finally, some Iowa State theses and dissertations exist only in paper format. For more information, see How to find dissertations and theses through the Iowa State University Library, or contact your subject librarian.

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College of Agriculture and Life Sciences
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College of Human Sciences
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College of Liberal Arts and Sciences
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Greenlee School of Journalism and Communication
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College of Veterinary Medicine
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Interdisciplinary Majors and Programs
Bioinformatics and Computational Biology
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Systems Engineering
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Browse Electronic Theses and Dissertations by Year of Completion

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Theses/Dissertations from 1950

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The anthracnose complex on soybeans , Lois Hattery Tiffany

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Evaluation of the production and subsistence loan program in Iowa , John Robert Tompkin

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Studies with heterocyclic compounds containing the azomethine grouping , Jack Lewis Towle

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Electrolytic concentration of caustic soda , Carl Rene Vander Linden

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Influence of inbreeding upon mortality among inbred lines of swine , Eugene Haworth Vernon

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Population dynamics of the Mearns cottontail (Sylvilagus floridanus mearnsii Allen) in the Iowa State College orchard and arboretum , Herbert Stephen Wallace

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Preparation of zirconium metal , Kenneth Albert Walsh

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Winter behavior and spring dispersal of the ring-necked pheasant (Phasianus colchicus torquatus Gmelin) in Emmet County, Iowa , Henry Griggs Weston Jr.

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Research in industrial education for advanced degrees at Iowa State College prior to 1950, Merle Oliver Wiener

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Effectiveness of a decelerated course in general chemistry , Arthur L. Williams

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Proteolytic enzymes of ripening cheddar cheese , Howard Keltner Zimmerman

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Prediction of probationary freshmen and effectiveness of a supplementary counseling program at Drake University, Eli Alan Zubay

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Effect of the Y-y factor pair on yield and other agronomic characters in corn , Marcus Stanley Zuber

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Streaming orientation of amylose and amylose complexes, Donald Zucker

Theses/Dissertations from 1949

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Estimation of soil productivity in relation to land values and farm management ... , Andrew Russell Aandahl

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The function of carbon dioxide in the metabolism of heterotrophic cells , Samuel J. Ajl

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Chemistry of glycerol dichlorohydrin as a reagent for the determination of vitamin A , Robert Scott Allen

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Factors in the biosynthesis of tryptophan and tyrosine by Lactobacillus arabinosus , Daniel Edward Atkinson

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Some factors affecting the quantity and quality of eggs marketed by certain producers , Ralph Levern Baker

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Oxidation of L-tyrosine by liver tissue , Ralph K. Barclay

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Drying characteristics of Buna-S rubber; Vacuum shelf drying, rotary vacuum drying, cabinet air drying, and through-circulation air drying , Wilson Ross Barnes

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Application of spray drying principles to the desolventization of miscella , Claude James Barr

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Pasturage and environmental temperature effects on the degree of unsaturation of cow milk fat, Erle Edwin St. Clair Bartley

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Effects of light and other factors on germination of seed of Poa pratensis , Louis Nelson Bass

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Economic analysis of the Quad Cities (Iowa-Illinois) milk market, Emanuel Lester Baum

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Ceramic applications of zeolites, Harry John Beckemeyer

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Reactions of organometallic compounds with some benzothiazole and quinoline types , John Addis Beel

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Methods and costs of terrace construction under Iowa conditions, Russell Herman Benedict

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Explicit solution of certain singular integral equations , Henry David Block

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An economic analysis of public labor policy , Lester Blum

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Removal of glucose from egg albumen by a controlled fermentation , Carol Houck Bollenback

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Action of Acetobacter suboxydans upon some 1-desoxy sugar alcohols , George Norris Bollenback Jr.

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Analytical study of dynamic loads on elastically supported slabs , Frank Edward Bortle

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Bone darkening in frozen poultry , Albert Wade Brant

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A process for the production of cellulose lignin and furfural from agricultural by-products , Melvin Henry Brown

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Technique for evaluating the ability of teachers to apply principles concerned with the developmental needs of adolescent girls , Sara Ann Brown

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Root behavior in fall and spring planted roses ..., Griffith J. Buck

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Sequential tests of the linear hypothesis , Osmer S. Carpenter

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The above and below ground relationships of alfalfa-grass mixtures , Douglas Scales Chamblee

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Control of asphaltic concrete mixtures at hot-mix plants , Ting Ye Chu

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Relationship of the nutrition of Streptococcus lactis to bacteriophage proliferation , Edwin Bruce Collins

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The mechanism of the fish thiaminase , Neil C. Davis

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Carotenoid content of tomato fruits as influenced by environment and variety , Ervin Loren Denisen

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Breeding structure and genetic correlations between characters within the Blakeford dairy herd , Arthur Archibald Dunlop

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Coupled bending and torsional free vibration of a swept wing , Alfred Edwin Engelbrecht

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Soybean harvesting losses with the combine, Aubrey Cortez Everett

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Glycerol fermentation of starch , Paul Holland Figard

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Development and use of evaluative criteria for adult education in homemaking in the public schools with special reference to Iowa , Roxana Ruth Ford

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Fractionation of the egg white proteins in media of low dielectric constant and low ionic strength , Richard Hamilton Forsythe

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Physical and pedological properties of loess soil and its highway uses , Ping-kan Fung

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Factors affecting the durability of mole drains, James Loyd Gattis

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Histocytological studies on normal bovine livers and on bovine livers exhibiting a focal hepatitis and telangiectasis , Robert Getty

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Nesting and production of waterfowl in Northwest Iowa: with special reference to the blue-winged teal (Anas discors Linnaeus) , Fred Arthur Glover

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Some factors influencing the slicing quality and the palatability of canned beef , Mary Eloise Green

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Nozzle placement and spray distribution pattern in the design of chemical weed control equipment, Jack G. Griffin

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Relationship between size and strength of glued joints, Charles Everlin Hamlin

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The influence of oxygen and carbon dioxide levels in the substrate upon potassium absorption by plants , Luther Carlisle Hammond

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Genetic variation and covariation in type and butterfat production among Jersey cows , Walter Robert Harvey

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Recovery of solvent from soybean oil-solvent solutions by stripping in packed columns , Robert Douglas Ingebo

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Mineralization of inositol-bound phosphorus in soil , Richard Harry Jackman

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Development of tyrosine-independent strains of Lactobacillus arabinosus, and some physiological properties of nutritional variants , Allen Pinsent James

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Determinants of the extent and type of cattle feeding in Iowa, George G. Judge

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Some factors influencing ecology and management of the interior bob-white quail (Colinus virginianus mexicanus L) on marginal lands in southeastern Iowa , Willard David Klimstra

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Factors pertaining to calculus achievement , Orlando Clark Kreider

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Economics of the production of ethanol, L. A. (Lewis Albert) Kremer

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Release of sodium from nonreplaceable to replaceable forms in Iowa soils and the response of various crops to sodium fertilization , William Earl Larson

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A selection index for butterfat production in Jersey cattle utilizing the fat yields of the cow and her relatives , James Edward Legates

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Fish population studies on two Iowa reservoirs , William Madison Lewis

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Clearing and deleading of plant extracts for reducing sugar determination , Egil Frode Lind

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Early testing as a means of evaluating F1 heterosis between inbred lines of Drosophila melanogaster , Sing-yuan Loh

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Reactions of phosphate with kaolinite , Philip Funk Low

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A piezometer method of measuring soil permeability and application of permeability data to a drainage problem , James Nicholas Luthin

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The effect of time, temperature and particle size on the release of bases from some common soil-forming minerals of different crystal structure , John Edward McClelland

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Synthesis of some valine derivatives as potential antibacterial agents , Frederick Nelson Minard

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Utilization of egg protein by well nourished and undernourished rats , Bibha Mukhopadhay

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Technique for testing the homogeneity of separately-evaluated behavior characteristics , Charles Owen Neidt

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Experience of the federal land bank with loans in four north central Iowa counties, 1917-47 , Aaron Gustave Nelson

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The Iowa school lunch program: a theoretical and quantitative analysis , Paul Edwin Nelson Jr.

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Purification and characterization of macerans amylase , Ethelda Jane Norberg

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Determination of optical constants in the near infrared of evaporated metal films from reflectance, transmittance and film thickness measurements , Max Spencer Oldham

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On certain criteria for optimum estimation , Bernard Ostle

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A drawbar dynamometer for direct reading of horsepower, John Gustaf Palmquist

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Some effects of temperature change on aluminum sheet roofing, Amarendra Chandrashankar Pandya

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Factors affecting enzymic peptide bond synthesis, Cornelius Wesley Pettinga

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An economic analysis of the Indianapolis fluid milk market, Norris Taylor Pritchard

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Microbial growth factors in commercial products of bacterial and fungal origin, Jacob Julius Pruzansky

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Differences in growth of Sindhi and crosses of Sindhi with Jersey, Brown Swiss, Holstein-Friesian and Guernsey cattle, Amarsingh Rathore

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Factors affecting the withdrawal resistance of roofing nails, William Thomas Robison

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Factors influencing the thiamine requirement of the chick, Paul Everett Sanford

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Effects of selected diets and metamorphosis on lipid composition of Dermestes maculatus DeG, John Kyle Scoggin

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Studies on corn phenology and maturity in Iowa , Robert H. Shaw

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Three-week and eight-week weights of litters as bases for predicting future productivity of sows, Robert Ray Shrode

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Effects of 2,4-dichlorophenoxyacetic acid on maize, David William Staniforth

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Minimum generalized variance for a group of linear functions , Robert G. D. Steel

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Influence of inbreeding on egg production in the domestic fowl, Alfred Benjamin Stephenson

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Some physical and chemical properties of Planosol and Wiesenboden soil series as related to loess thickness and distribution , Rudolph Ulrich

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Effect of certain organic agents on water-stable soil aggregation , Cornelius H. M. Van Bavel

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Community services of vocational agriculture groups in the North Central and Western regions , Norval Junius Wardle

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Anaerobic metabolism of pyruvate by bacteria , Dean Day Watt

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Enzymic peptide bond synthesis and its inhibition , Harry Wax