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Place Discrimination In Rail Shipments Of Wheat From Great Plains Origins, Dale G. Anderson, Brian L. Mariska

Department of Agricultural Economics: Faculty Publications

The purpose of this study was to determine whether shipments of wheat by railroad from Nebraska and other Great Plains States are discriminated against relative to shipments from other wheat producing states and regions. Primary objectives were: 1. To develop a technique for measuring place discrimination. 2. To employ the technique in testing empirical data for evidence of discrimination. 3. To analyze the results and explore implications for geographically- separated wheat shippers. Ratios of railroad revenue/out-of-pocket costs for the years 1958 and 1966 were used to compare the relative cost burden borne by wheat shipments in geographically-separated hauls. Resulting ratios …

Diagnosis And Treatment Of Gonorrhea, Paul A. Kvale

Henry Ford Hospital Medical Journal

The various methods for diagnosis of gonorrhea are reviewed. Gram-stained smear of urethral exudate in the mate is appropriate, but for the female emphasis is placed on the use of culture on Thayer-Martin medium. Currently effective modalities of treatment are detailed, pointing out that higher doses of antibiotics are generally required for females with pelvic inflammatory disease than for males with acute gonococcal urethritis. The necessity for follow-up is also discussed.

Place Discrimination In Rail Shipments Of Wheat From Great Plains Origins, Dale G. Anderson, Brian L. Mariska

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this study was to determine whether shipments of wheat by railroad from Nebraska and other Great Plains States are discriminated against relative to shipments from other wheat producing states and regions. Primary objectives were: (1) To develop a technique for measuring place discrimination (2) To employ the technique in testing empirical data for evidence of discrimination (3) To analyze the results and explore implications for geographically-separated wheat shippers.

Induction Of Cytokinin-Independent Tobacco Tissues By Substituted Fluorenes, Thomas W. Bednar, Elfriede M. Linsmaier-Bednar

Biological Sciences Faculty Research and Publications

Two morphactins and three aminofluorenes initiated the formation of compact tissue nodules in hormone-dependent tobacco callus cultures. These nodules, upon subculture, behaved like partially transformed plant tumors. They grew on cytokinin-free media, while control callus and nonnodule tissue still required an exogenous cytokinin source. The data indicate that substituted fluorenes, including carcinogenic aminofluorenes, can cause a neoplastic growth response in cultured tobacco tissues. Of particular interest in this study is the finding that a directed and heritable cellular change is induced in tobacco tissue in which a specific (the endogenous cytokinin) biosynthetic system is regularly and persistently activated.

Phytoplankton Periodicity In Shanty Hollow Lake, Warren County, Kentucky, David Hill

Masters Theses & Specialist Projects

A study of the phytoplankton periodicity and its correlation with chemicophysical parameters, diel variation of the plankton, and the cyclomorphotic variation of Ceratium hirundinella was made in Shanty Hollow Lake, Warren County, Kentucky, from October, 1969, to August, 1970.

Phytoplankton samples were collected at zero and six feet with a Kemmerer sampler (31 October through 8 December) and with a ten -liter Birge-Juday plankton trap (23 December through 9 August). Water samples for the chemicophysical determinations were collected with a Kemmerer sampler. The phytoplankton samples were preserved with 5% formalin until they were enumerated. The chemicophysical determinations (pH, conductivity, dissolved …

Properties Of Salmonella Phage P3 After Subjection To Host-Controlled Modification By Passage Through E. Coli K-12, Benjamin J. Siapco

Loma Linda University Electronic Theses, Dissertations & Projects

Five new bacteriophages were isolated from lysogenic S. potsdam in this laboratory. Group B phages (P3 and P9a) were found to have unique properties, including their capability to infect strains of E. coli K-12 and E. coli C⁺/L. Passage of the phages through these hosts modified them (host-controlled modification) so that their ability to infect their original host, S. potsdam, was reduced and only 1-4 per million were able to form plaques.

To help elucidate the biochemical basis of host-controlled modification in the Salmonella potsdam group of bacteriophages, the clear plaque mutant of one of them, P3-c …

Effects Of Water Quality On Physico-Chemical And Organoleptic Characteristics Of Selected Canned Fruits And Vegetables, Anita Kay Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of processing water quality, specifically calcium and magnesium salt content (0-500 mg/1) and the addition of chelating agents (0-250 mg/1 of aminopolycarboxylic acids, polyphosphates, hydroxycarboxylic acids or phytates), upon physico-chemical and organoleptic characteristics of canned Jonathan and Delicious apple slices, Montmorency cherries and Blue Lake green beans was investigated.

Physical determinations: shear values, turbidity of syrup or brine measured via light transmittance, Hunter color and color difference meter readings and internal can corrosion; chemical composition: pectin as calcium pectate, volatile reducing substances, total acidity, pigment determinations, nitrate-nitrogen values; and sensory measurements: texture, shape, flavor, aroma, color value and …

Bacterial Receptor Sites For Uptake Of Transforming Dna, Douglas Pierre Bingham

Theses and Dissertations

Bacterial transformation is defined as a mechanism of genetic exchange whereby a population of bacteria can obtain genetic informa-tion as a result of cellular uptake and integration of extracellular deoxyribonucleic acid released from other bacteria by natural or in-duced lysis. In order for a transformable strain of bacteria to take up DNA and to undergo transformation, the cells must be in a physiolog-ical state called competence. A cell is referred to as competent if it has the ability to bind extracellular DNA irreversibly and subsequently to integrate and express the DNA.

Investigation Of Urolithiasis Occurring In Hatchery-Reared Trout In Utah, Ernest H. Dean Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The urolithiasis condition investigated occurred at a "hard water" hatchery in Utah after the trout were changed from a meat diet to a commercial pelleted fish feed as a sole sustaining diet in 1961. Numerous diet modifications proved unsuccessful in preventing urolithiasis at the hatchery. It was eventually determined that different commercial diets resulted in varied percentages of trout developing urolithiasis. The urolithic deposits found in the kidney tubules were amorphous and composed of calcium phosphate (apatite) and an organic matrix. Bacterial contamination of the kidneys was not an important factor in the formation of urolithiasis. Rainbow trout containing urolithic …

Market Structure Analysis Of Fertilizer Distribution In Utah, John C. Welty

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was to ascertain the contribution of various structural variables to a growing, efficient system of fertilizer distribution in the state of Utah. A questionnaire to survey the fertilizer distributors was used as a source of data. Information was obtained about structural changes in a five-year period, 1965 to 1970. A multiple regression program was used to synthesize these data to determine which variables were most significant and how much they contributed to an increase in total value of fertilizer sales. While empirical data were obtained only for structural dimensions of the industry, marketing theory was …

The Nitrogen Budget Of Two Salt Desert Shrub Plant Communities Of Western Utah, Richard S. Bjerregaard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The nitrogen budgets of Eurotia lanata (Pursh.) Moq. and Atriplex confertifolia (Torr. and Frem.) S. Wats salt desert shrub plant communities were investigated. In each, a complete biomass and organic nitrogen inventory was made. In addition, investigations of the nitrogen fixation potential of soil surface microflora and inorganic soil nitrogen relationships were carried out.

Greater total biomass and organic nitrogen was found in the above-ground portions, annual shoot productivity, and litter of the Atriplex community. However, the Atriplex community was exceeded by the Eurotia community in root biomass. Roots accounted for 74 and 87 percent of the plant biomass and …

Investigations Into The Microbial Ecology And Limnology Of Hyrum Reservoir, In Northern Utah, Kenneth Maxwell Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A series of preliminary investigations was carried out to determine the factors promoting the dense, late summer waterblooms of Aphanizomenon flos-aguae in Hyrum Reservoir in northern Utah. Attempts were made to culture the Aphanizomenon in the ASM-8a medium of O'Flaherty and Phinney (J. Phycol. 6:95-97. 1970), but no growth was obtained and the algae soon lysed. Cultures were maintained, without growth, for more than four months in a lake water--lake sediment medium at 17 C under 1500 lux flourescent light.

Dissolved oxygen measurements using an in situ probe revealed the development of a sharp oxycline during the summer months; on …

A Study Of Ultrastructural Changes In Tolerant And Susceptible Lines Of Alfalfa Induced By Stem Nematode (Ditylenchus Dipsaci Kühn), Dorris C.N. Chang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fine structural analyses of host tissue (alfalfa, Medicago sativa L.) response to infection by the stem nematode (Ditylenchus dipsaci Kühn) were conducted. Hypocotyl regions were taken on 1,3 and 7 days after inoculation.

Electron micrographs of infected tissue indicated the types of damage were the same between Lahontan (tolerant line) and Ranger (susceptible line). Only the infection rate (in percent) and degree of damage were different between lines and among the different temperatures (15, 20 and 25 C). The higher the temperature, the more injury resulted. After 3 to 7 days of infection, the symptoms observed were swelling and …

An Evaluation Of A Self-Guided Visitor Tour At Bear River Migratory Bird Refuge, Steven J. Kohler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In 1967 this study was initiated to evaluate the self-guided visitor tour of Bear River Migratory Bird Refuge. A 20 page visitor information booklet and tour guide was prepared and published for distribution at the refuge, and its effectiveness in telling the refuge story was evaluated. To gain a measure of the self-guided tour in terms of quality, visitor use patterns and satisfactions were critically examined.

To gather data on visitor use of the refuge, the visiting public was directly sampled by three methods: mail questionnaires, on-site interviews and candid tower observations of groups on the tour.

The information and …

Polymerization Of Tobacco Mosaic Virus, Fabian Crespo V.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An organic chemical condensing reagent, 1-cyclohexyl-3-(2-morpholinoethyl)-carbodiimide metho-p-toluene sulfonate (CMC) was tested for effectiveness in inducing polymerization of short lengths of tobacco mosaic virus (TMV) nucleoprotein particles isolated from systemically infected Turkish tobacco leaves. It appeared that the chemical induced the formation of phosphodiester linkages between the viral RNA helices in the joining nucleoprotein fragments. Because the polymerization reaction liberates a hydroxyl ion with each joining event the kinetics of the polymerization can be followed with time using a pH meter. The number of hydroxyl ions liberated is equal to the number of polymerizations. Physical evidence of polymerization was obtained by …

Low Temperature Modification Of Cell Ultrastructure In Hardy And Nonhardy Grass Species, Steven L. Kimball

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies were conducted to determine the influence of different temperatures (25, 10, 0, or -5 C) upon plant growth and cell ultrastructure, and to determine if physical changes within cells might block growth activities even though individual biochemical processes were potentially active.

Secale cereale L. was found to be most hardy, followed by Cynodon dactylon (L) Pers. and Paspalum notatum Flugge, whose responses were quite similar. Secale grew normally at 25 and 10 C, with reduced activity at 0 C and a slight delay before resuming normal growth when placed at 25 C again. All three species were killed at …

The Effect Of Chromosomal Position On Dosage Compensation And Ontogenic Expression Of The V+ Gene In D. Melanogaster, Jack E. Tobler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two manifestations of gene regulation-- dosage compensation and ontogenic regulation--were examined in normally positioned and relocated v⁺ genotypes in Drosophila melanogaster to determine the role of gene position in these control functions. Enzyme assays, used as criteria of gene activity, were performed on various genotypes containing different doses of v⁺ in normal and relocated positions in male and female flies. The results indicate that although differently positioned v⁺ genes may specify different tryptophan pyrrolase activities, they still show dosage compensation. In each case, the enzyme activity associated with each gene, either on the X, Y, or third …

Influence Of Temperature Of Incubation And Type Of Growth Medium On Pigmentation In Serratia Marcescens, Robert P. Williams, Cora L. Gott, S M. Qadri, Randolph H. Scott

Faculty, Staff and Student Publications

Maximal amounts of prodigiosin were synthesized in either minimal or complete medium after incubation of cultures at 27 C for 7 days. Biosynthesis of prodigiosin began earlier and the range of temperature for formation was greater in complete medium. No prodigiosin was formed in either medium when cultures were incubated at 38 C; however, after a shift to 27 C, pigmentation ensued, provided the period of incubation at 38 C was not longer than 36 hr for minimal medium or 48 hr for complete medium. Washed, nonpigmented cells grown in either medium at 38 C for 72 hr could synthesize …

A Comparison Of The In Vitro Viability Of Ova From Hormone-Treated Mice With Ova From Spontaneous Ovulations, Henry H. Lyon

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Science and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Henry H. Lyon on April 23, 1971.

"The Development Of Social Behavior In Primates", Robert A. Hinde

Special Collections: Oregon Public Speakers

No abstract provided.

South Dakota's Economy In A Changing World : Highlights Of Papers Presented At The Ninth Agri-Business Day, South Dakota Agricultural Experiment Station, Department Of Economics, South Dakota State University

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

Contents:
BEYOND OUR BORDERS
Prospects in International Trade
South Dakota's Stake in Agricultural Trade
A New Life for the Country
DEVELOPMENTS IN SOUTH DAKOTA
Computer Technology for Agriculture Farm Record Analyses
Farm Credit Services Research Uses
Feed Business Applications
Planning and Economic Development
The Question of Tax Reform

Louisiana Agriculture Magazine, Spring 1971, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

A Study Of Glycosphingolipids In Aorta, Blood And Spleen And The Effects Of Atherogenic Diets On These Lipids In Rabbits, Eric Coles

Dissertations

No abstract provided.

Cause And Control Of A Common Market Disease Of Lettuce, William Palmore

Masters Theses & Specialist Projects

Head lettuce, Lactuta sativa var. capitata, is susceptible to a number of economically important diseases, the most frequent being russet spot, rib discoloration, and vascular browning (28), which have been shown by Ceponis and Friedman (7) to be caused by Pseudomonas marginalis. Pseudomonads are common plant pathogens and cause such diseases as halo blight in beans (20), bacterial blight in soybeans (20), and bacterial wilt of the bird-of-paradise (27) and tobacco (24).

Plants that develop symptoms similar to russet of lettuce are oats, infected by Pseudomonas cichorii, and tobacco infected with Pseudomonas tobaci (34). In general, russet symptoms …

Whole Issue Nebraska Bird Review (March 1971) 39(1)

Nebraska Bird Review

TABLE OF CONTENTS

Treasurer's Report ....................2

Pileated Woodpecker in Otoe County ....................3

1970 Christmas Count ....................4

Winter Meeting ....................9

1970 Nebraska Nesting Survey ....................10

Notes ....................15

In Memoriam ....................16

Introduction Of Small Carpenter Bees Into California For Pollination 1. Release Of Pithitis Smaragdula, Howell V. Daly, George E. Bohart, Robbin W. Thorp

All PIRU Publications

Pithitis smaragdula (F.) is a bright green, small carpenter bee which is widespread in the oriental region and is known to pollinate economically important plants, especially legumes and cucurbits. About 300 bees imported from Ludhiana, India, were released 10 April 1969, at Davis, California. Subsequent collecting during the 1st season confirmed that one or more generations of the bees had been reared and that Trifolium repens L. was visited for pollen. Although the overwintering bees under observation died from unknown causes, and no living bees were found in 1970, it is possible that the bees survived elsewhere. Ecological factors believed …

Fisheries Report No 9 - The Fauna And Flora Of Monte Bello Islands, A. A. Burbidge Dr

Fisheries Research Reports

Two visits were made to the Monte Bello Islands in 1970 and 1971.

The aim of the visits was to examine the islands for the presence of native mammals and other fauna, and to explore the possibility of re-establishing fauna now extinct,

The first survey was carried out in conjunction with a more detailed examination of the Dampier Archipelago. The fisheries patrols vessel "Dampier" was used to reach the islands and as a base. Personnel were R. Johnstone (W.A. Museum), E.J. Little and J.D. Harman (crew of the "Dampier"), R.F. Dear and A.A, Burbidge, all from the Department of Fisheries …

Director's Report, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

An Ecological Study Of Coliform Bacteria Associated With Vaccinium Corymbosum, Harry C. Bittenbender

Honors Theses

Recent research has shown that there are coliform populations associated with the cultivated high bush blueberry, Vaccinium corynbosum. This study is aimed at determining the ecology of these colofirms, as they are related to blueberry production from the farm to the warehouse. Tests will be made to identify the Salmonella group, those associated with "food poisoning." Total bacterial coliform counts will also be made. This paper is primarily an ecological study of the coliforms found on blueberry farms near Grand Junction, though fruit samples were taken from all warehouses of the M.B.G.A.

Poliovirus Replication: Interactions With Cytoplasmic Membranes And With Compounds Which Affect Virus Biosynthesis, Anne G. Mosser

Student Theses and Dissertations

Picornavirus multiplication is intimately associated with intracellular membranes and affects their production and distribution within the cell. We have shown that the density distribution of cytoplasmic membranes separated by isopycnic centrifugation in discontinuous sucrose gradients is progressively altered after infection of HeLa cells with poliovirus. The most striking change is a very large increase in the smooth microsomal membranes with which viral RNA synthesis is associated. These membranes begin to increase between 2.5 and 3.5 hours after infection, and continue to proliferate late in the virus growth cycle, at a time when cellular protein and nucleic acid syntheses are much …