Life Sciences Commons^™

Application Of Paper Electrochromatography To Isolation Of Tobacco Mosaic Virus, Bertram E. Bordewick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Importance of the problem

The complete study of a virus disease often reaches a stalemate because of failure to isolate the virus itself in a purified form. Methods in current use, such as ultracentrifugation, precipitation, fractionation, and spectroscopic analysis, have in some cases proved successful in virus purification work. Frequently these techniques have not proved satisfactory, particularly with phloem-type viruses which are not mechanically transmitted. This investigation was undertaken to determine the possibility of isolating these and other viruses by electrochromatography.

Seasonal Yield And Nitrogen Content Of Three Grasses Grown Alone And In Association With Each Other And With White Dutch Clover, Donald B. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The chief aim of pasture research is to discover means of providing the largest possible amount of highly nutritious forage at the time the animal requires it. Throughout the grazing season animal herbage requirements are relatively constant, while herbage production from pastures usually is quite variable.

Control Of Dodder In Alfalfa Seed Crops, William Orvid Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Dodder (Cuscuta spp.) is a parasitic weed which attacks alfalfa, clovers, lespedeza, and many other species of plants. This pest is especially troublesome when these crops are grown to produce seed.

Control of dodder should increase the financial income of a seed producer in several ways. First, control should make it possible for a producer to raise seed of high quality which will command a better price; second, it should enable the producer to increase yields; and last, it should eliminate much of the cost of harvesting and cleaning his product.

Where dodder is present in seed, the grower …

Factors That Contribute To Success Of Selected Farm Ownership Borrowers In Utah, Grey M. Jensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Farming is a complex business. Financial success in farming is influenced by the organization and operation of the farm unit. The principal problem confronting farmers is knowing how to manage the resources to attain maximum income over a period of time. Combinations of resources involve problems relative to crops, livestock, machinery, labor, capital, credit, and many others. An attempt has been made in this study to measure the results of different combinations and operation of resources and to determine their association with financial success of the farm.

Factors Affecting Length Of Tenure Of Vocational Agriculture Teachers Who Are Recent Graduates Of Utah State Agricultural College, John M. Oglesby

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since its beginning well over a quarter of a century ago, the Vocational Agriculture program has become an integral part of the American school system. The legislative groundwork for Vocational Agriculture, as well as all other vocational programs, was set in 1917 with the passing of the Smith-Hughes Act. Further related legislation was passed in 1929 and 1934, but the program received its greatest federal boost with the passing of the George-Deen Act in 1936 and the George-Barden Act in 1946, both of which provided for the annual expenditure of federal funds in support of vocational education. The George-Barden Law, …

The Economics Of Rural Residential Zoning In Utah County, Max K. Buchmiller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Change in the use to which land is put may affect the economic and social return from it. Land-use changes tend to be rather permanent in nature. They should be guided so that social welfare will be served best. Rural Zoning has developed from this need to direct change in land use in rural areas.

The Effect Of Limited Moisture Supply At Various Stages Of Growth On The Development And Production Of Hybrid Corn, Ralph E. Campbell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Corn occupies from 25 to 30 percent of the crop land harvested in the United States. In recent years the acreage devoted to corn in this country has been decidedly greater than that devoted to any other cultivated crop. In 1944 its dollar value exceeded the combined values of wheat, barley, rye, grain sorghums, and cotton.

Although South Dakota lies on the northwestern fringe of the corn belt, the corn crop is one of the most important in that state. Corn production in that area is somewhat unstable because of drought. Corn often fails to reach full maturity before the …

A Study Of Mineral Nutrition Of Range Cattle In Southeastern Utah, Robert J. Raleigh

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Cattlemen of south central Utah in Sevier and Wayne County areas have been plagued for the past twenty-five or thirty years by a malady known to the cattleman as "Brisket Disease." It is a chronic disease affecting both male and female of all ages. It is characterized in advance stages by enlargement of the brisket and throat regions, loss of appetite, a general unthrifty condition and marked ascites. The seriousness of the disease is indicated by a morbidity rate varying from one to five percent of the cattle grazing these areas with almost one hundred percent mortality rate.

Many of …

Inheritance Studies Of A Wheat Cross To Six Races Of Covered Smut, Douglas R. Dewey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Covered smut is a fungus disease that has caused serious losses of wheat for centuries. Its origin is not known, but it was well known to early Romans as evidenced by the fact that they had a god, Robigus, whose special work was to watch over crops to "avert the mildew" (45). It is often referred to as "bunt" or "stinking smut of wheat". Throughout this paper the term "bunt" will be used to designate this disease in order to avoid confusing it with other smuts of wheat.

Bunt is worldwide in its distribution, but it is especially prevalent in …

The Effect Of Stage Of Maturity On The Quality Of Lima Beans For Processing, Abdul Razzaq Abdul Rahman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lima bean* is one of the important vegetable crops in most of the countries where it is grown, including the United States of America. This crop is harvested for its green beans, which can also be processed, or allowed to mature as "dry beans."

The practice of growing lima beans for processing has indicated that quality and yield are influenced by many factors, among which the stage of maturity at time of harvest is possibly the most important.

Lima beans continue to increase in size until fully matured, but most processors agree th.at the green beans attain maximum quality prior …

Marketing Aspects Of Cattle Finishing Operations Major Cattle Finishing Areas Of Utah, 1951-52, Robert L. Fulton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

On January 1, 1952, 50,000 head of cattle were on feed for slaughter in the state of Utah (6). This was an increase over previous years. The average number of cattle on feed for slaughter January 1st during the 1948-52 period was 45,000 head. This number was 30 percent larger than the average number on feed during the 1943-47 period. As shown in figure 1, the number of cattle on feed has fluctuated from year to year. The years with the least number of cattle on feed were those in the early thirties during the depression and drought. Since 1936 …

Muskrat And Waterfowl Production And Harvest On Dingle Swamp, Bear Lake County, Idaho, Henry M. Reeves

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Dingle Swamp, a high altitude marsh, is located in the extreme southeastern corner of Idaho in Bear Lake Valley. The 16,000 acre marsh, one of the largest in the state, is separated from Bear Lake by only a narrow curved sandbar. Numerous islands, ponds, and channels diversify the characteristic bulrush vegetation of the marsh. The largest body of water, Mud Lake, is approximately 1 square mile in area. Several thousand muskrats and fair numbers of waterfowl, particularly Canada geese, are produced annually on the marsh.

The Comparative Effects Of Chopped And Un-Chopped Alfalfa Hay On The Gain In Weight Of Dairy Heifers, Uzziah Pathus Grigsby

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

The Distribution And Ecology Of The Terrestrial Shell-Bearing Mollusca Of Hanover, Henrico, And Chesterfield Counties, Virginia, John Bayard Burch

Master's Theses

Very little has been published concerning the molluscan fauna of Virginia, this being also true for the area under consideration. A preliminary list of the Mollusca of Hanover County was published by J.B.Burch (1952) in which twenty-five species and subspecies of land snails were reported. Several of the land Mollusca of Henrico and Chesterfield Counties were listed by P.R. Burch (1950). These included the snails Discus patulus Deshayes, Haplotrema concavum (Say), Mesodon thyroidus (Say), Stenotrema hirsutum (Say), Triodopsis Fallax (Say), and Ventridens = (zonitoides) arboreus (Say). Two additional species, Helicodiscus parallelus (Say) and Retinella indentata (Say), were reported by personal …

The Influence Of Locust Bean Gum On The Strength Characteristics Of Handsheets Under Varying Ph Conditions. A Study Of The Effect Of Alum Or Hydrogen Ion Concentration, Robert J. Witters

Paper Engineering Senior Theses

A literature survey concerning the addition of locust bean gum to beaten pulp and the resulting strength characteristics imparted to handsheets through the addition of the gum has been undertaken. Although much literature can be found, hardly any detailed information can be extracted on the effect of alum or hydrogen ion concentration. Therefore, the aim of this paper is to draw some conclusion, through laboratory work, as to any possible change, due to pH or alum, in the strength characteristics of handsheets containing locust bean gum.

The first part of this thesis will be a brief review of work that …

The Loss Of Some Strength Characteristics Of Coated Magazine Paper As A Result Of Exposure To Elevated Temperatures, Hugh D. Burnie

Paper Engineering Senior Theses

Introduction

The purpose of this work is to investigate the effect that varying degrees of temperature have on the strength properties of coated magazine stock. Paper of this type encounters high temperature conditions primarily in the ink drying operations following the printing of the web. The strength with which the paper meets the cutting, folding and binding methods which follow the drying operation are of paramount importance to the printer. Throughout the work, attempts were made to assimilate conditions encountered in present day commercial practice.

A New Experimental Pulp Digester Installation With Separate Steam Supply, Andre L. Breton

Paper Engineering Senior Theses

Part I

Literature Survey

Up to now, few articles have been written on the subject of Experimental Pulp Digester Installations. In our searches we have been able to find information concerning only The Pulp and Paper Research Institute of Canada in Montreal, P.Q., Canada, The Chemical Pulp Experimental Department of the Central Laboratory in Finland, and a sulfite digester for research and instruction at the University of Washington at Seattle, Washington, U.S.A.

Acid Treatment Of Pulp At Different Temperatures And The Resultant Change In Pulp Characteristics, Kent Dickerman

Paper Engineering Senior Theses

Literature Survey

The aim of this thesis is to investigate the acid treatment of pulp at different temperatures. In the experimental work, enough sulfuric acid is used to neutralize the mixture of pulp and water and thereafter reach in the pH range of one and eight tenths to two at atmospheric pressure. Temperatures during experimentation range from room temperature to 100° Centigrade.

Plankton Studies Of The Tomales Bay, California, Andrew William Mcclain

University of the Pacific Theses and Dissertations

These studies on the plankton of Tomales Bay were designed to determine the effects of such physical factors as tides, temperatures, salinities and sunshine on the quantities of various types of organisms, and to obtain a more comprehensive picture of estuarine life at the Pacific Marine Station. The studies were begun in the summer of 1948 and continued through the summer of 1953.

Although various studies have been conducted on different aspects of marine plankton, the only general treatments of the subject of which the writer is aware are those of Johnstone (1924), Ricketts and Calvin (1951), Sproaton (1949) and …

Spermatogenesis In The Sand Crab Emerita Analoga, Mario Martin Menesini

University of the Pacific Theses and Dissertations

Crustacean spermatozoa are among the most peculiarly modified germ cells in the animal kingdom. Many of their striking cytological specializations may be observed in the sperm cells or Emerita analoga, the so-called sand crab. This animal has been used by the writer for studies on spermatogenesis and on spermatozoan behavior during the summer or 1951, 1952, and 1953 at the Pacific Marine Station.

Effects Of Applications Of Magnesium And Sodium On The Absorption Of Other Cations And Phosphorus By Cotton., Joseph E. Sedberry

LSU Historical Dissertations and Theses

No abstract provided.

The Effect Of Antagonistic Soil Microorganisms On The Severity Of Pythium Root Rot Of Sugarcane., Leander Floyd Johnson

LSU Historical Dissertations and Theses

No abstract provided.

A Genetic Analysis Of The Major Components Of Yield In American Upland Cotton., Richard Dix Breaux

LSU Historical Dissertations and Theses

No abstract provided.

Innervation Of The Heart And Ductus Arteriosus And Other Features Of The Autonomic Nervous System Of The Full Term Human Fetus., Frank D. Allan

LSU Historical Dissertations and Theses

No abstract provided.

Rhizoctonia Aerial Blight Of Lespedeza., William Hugh Stroube

LSU Historical Dissertations and Theses

No abstract provided.

Concentration And Movement Of Oxygen As Related To Absorption Of Ammonium And Nitrate-Nitrogen By Rice., William Hardy Patrick

LSU Historical Dissertations and Theses

No abstract provided.

Studies On The White Tip Disease Of Rice., Edwin Harkness Todd

LSU Historical Dissertations and Theses

No abstract provided.

Inheritance Of Strength And Perimeter Of Fiber In A Cross Between Two Varieties Of American Upland Cotton., Thomas James Stafford

LSU Historical Dissertations and Theses

No abstract provided.

The Inheritance Of Two Constituents Of Yield In American Upland Cotton., Robert Lee Thurman

LSU Historical Dissertations and Theses

No abstract provided.

Studies On The Translocation Of Systox In The Cotton Plant And Its Effect On The Cotton Aphid, Spider Mite, And Some Of Their Predators., Mostafa Kamal Ahmed

LSU Historical Dissertations and Theses

No abstract provided.