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Effect Of Various Nitrogen Sources On The Metabolism Of Miserotoxin In Astragalus Miser Dougl. Ex Hook., Robert Parker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wasatch milkvetch [Astragalus miser Dougl., var. oblongifolius (Rydb.) Cronq.] was highest in miserotoxin, a poisonous nitro compound, when potassium nitrate was used as the nitrogen source in nutrient cultures. Ammonium nitrate, added to Hoagland solutions to provide four and one-half times normal nitrogen, lowered percent miserotoxin in the plants. Plants grew abnormally in the greenhouse, producing little growth and becoming periodically senescent. High greenhouse temperatures, up to 45 C, were probably responsible for the abnormal growth.

Attempts to inoculate and fix nitrogen in Wasatch milkvetch with Rhizobium bacteria were unsuccessful in the greenhouse.

In growth chamber studies, percent miserotoxin …

A Comparison Of The Ecological Life Histories Of Delphinium Occidentale S. Wats. And Delphinium Barbeyi Huth, Jere Randolph Holman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two species of the holartic genus Delphinium (D. occidentale S. Wats. and D. barbeyi Huth) were studied in the field and laboratory to determine the factors influencing the life stage development and distribution of these plants.

Delphinium occidentale, more widely distributed geographically and altitudinally than D. barbeyi, is found as a member of aspen and sagebrush communities. Sites are mesic in early spring but turn xeric by midsummer. Delphinium barbeyi, more limited in distribution geographically and altitudinally, appears to be limited to subalpine sites.

Adult biological properties are similar for both species. Morphological and taxonomic differences …

Studies Of Porphyrin Biosynthesis In Higher Plants, Tsung-Chiang Chen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Uroporphyrinogen decarboxylase which catalyses the formation of coproporphyrinogen from uroporphyrinogen is located in the soluble fraction of tobacco leaves and was purified 72 fold through ammonium sulphate precipitation and calcium phosphate gel adsorption.

Kinetic studies indicated that the apparent Michaelis constant was 1 x 10^-6 for uroporphyrinogen III (pH 6.5; 37° C). Uroporphyrinogen III served as a much better substrate than uroporphyrinogen I under the standard conditions of this study.

Enzyme activity was inhibited by thiol reagents and heavy divalent cations.

Both chloride and fluoride salts inhibited the formation of coproporphyrinogen from uroporphyrinogen.

Enzyme activity was inhibited by several …

Utah Science Vol. 34 No. 1, March 1973

Utah Science

Problems with range grosses? Look for block gross bugs! B. Austin Haws, Don D. Dwyer, and Max G. Anderson 3

Wildlife notes 9, 21, 26

Infectious calf diarrhea, R. A. Smart 10

Utah's snowshoe hare - a neglected resource, William R. Clark and Michael l. Wolfe 12

Australian breakthrough for animal nutrition research 15

Research Briefs - Agribusiness news notes, Rondo A. Christensen 16

Silage for fattening cattle, John Butcher and Howard Lloyd 17

Pheasant and duck - nest motes, Lorry B. Dolton and Scott M. Stenquist 18

Livestock poisoning - by plants, Wayne Binns and Eugene H. Cronin 20 …

Annual Nutrient And Energy Intake Of The Desert Cottontail, Sylvilagus Auduboni, Under Natural Conditions, H G. Reynolds, F. J. Turkowski, R. M. Chew

Memorandum

No abstract provided.

Usu Status Of Women News, Volumen I, Issue 3

ADVANCE Library Collection

No abstract provided.

Curlew Valley Validation Site Report, David F. Balph

Memorandum

No abstract provided.

Consumption, Utilization And Modification Of Nutritional Resources By The Jackrabbit (Lepus Californicus) In The Mohave Desert, V.H. Shoemaker, K.A. Nagy, W.R. Costa

Memorandum

No abstract provided.

Draft Proposal For 1974-76 And Review Of Scientific Accomplishment, U.S. International Biological Program

Proposals

No abstract provided.

Proposal For 1974-76, U.S. International Biological Program

Proposals

No abstract provided.

Utah State University Commencement, 1973 – Main Campus, Utah State University

Commencement Programs

Eightieth Annual Commencement of Utah State University

Grass-Woody Plant Relationships, A.W. Bailey, R.K. Gupta

Aspen Bibliography

No abstract provided.

Utah Science Vol. 33 No. 4, December 1972

Utah Science

Refocusing research to better serve Utah- editorial, Wynne Thorne 99

Translating agriculture into food 100

New shapes for turkey, Carroll Draper 101

Alfalfa insects research gets new dimensions 103

Modern treatments retard spoilage of fruit and produce, D. K. Salunkhe, M. T. Wu, and S. Jadhav 104

Natural hybridization among the pinyon pines, Ronald M. Lanner 109

Blood will tell, Clive W. Arave and T. A. Gillette 111

Genetic improvement of dairy cattle, R. C. lamb 113

Rural development: its dimensions and focus, Stan L. Albrecht 115

Research notes about stress 120

Pigs help answer questions about human nutrition, Deloy …

Utah Science Vol. 33 No. 3, September 1972

Utah Science

Utah agriculture is never static-editorial Doyle J. Matthews 71

Wildlife notes 72, 96

Getting answers from Utah's salt desert, Lois M. Cox 73

Iron deficiency- causes and consequences, Arthur Mahoney and Deloy G. Hendricks 75

New irrigation method saves water, but it's expensive, R. J. Hanks and Jack Keller 79

Water rights and zoning restrictions, Darwin B. Nielsen 83

Soils of the Wasatch valleys, LeMoyne Wilson and A. R. Southard 85

What you've wanted to know about lawns- but were afraid to ask, William F. Campbell 88

Regional climatic planning- guide for Utah, E. Arlo Richardson 91

Utah tree bulletin …

The Interaction Of Promazine With Selected Macromolecules And A Membrane Utilizing Absorption And Emission Spectroscopy, Jess D. Keeler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The association of promazine-HCl with bovine serum albumin, ammonium detergent micelles, and hemoglobin-free-rabbit-erythrocyte membranes were measured using the changes in the absorption and the emission of the interactants plus the fluorescent probe 1-anilino-8-naphthalene sulfonate. The binding of a promazine to serum protein and membrane did not alter the emission of the drug. However, the binding did produce a measurable quenching of the membrane and protein fluorescence. The quenching reaction was pH sensitive for both the protein and the membrane. Promazine binding to serum protein produced a hyperchromic change in the drugs absorption spectrum which paralleled the quenching reaction. The binding …

Utah Science Vol. 33 No. 2, June 1972

Utah Science

Ingenuity + time = $ saved + efficient research 39

A research tool for plant scientists - the electron microscope, W. F Campbell and S. L. Kimball 40

Weed control in cities and towns, Louis A. Jensen 44

Utah's most notorious poisonous weed-controlling ,tall larkspur, E. H. Cronin 47

Native plants for gardens, Berniece A. Andersen and Arthur H. Holmgren 50

To commute - or not to commute: a new choice for farm families, B. Delworth Gardner and Larry K. Bond 53

Logan lagoons good for ducks, David E. Dodge and Jessop B. low 55

Cubed hay gives better gains, …

The Regulation Of Purine Biosynthesis In A Phosphoribosylpyrophosphate Aminotransferase-Deficient Mutant Of Salmonella Typhimurium, Wen-Cherng Tsai

Biology

The regulation of the alternate first enzyme of purine de novo synthesis (ribose-5'-phosphate aminotransferase) has been examined in pur-F 341, a purine-requiring mutant of Salmonella typhimurium deficient in the primary first enzyme (PP-ribose-P amidotransferase, EC 2.4.2.14). The ribose-5'- phosphate aminotransferase is feed-back inhibited by AMP, ADP, GDP and adenosine but not by ATP, GTP, GMP and free adenine. Pyrimidines (except CDP and UDP) and thiamine compounds show no significant inhibitory effect on ribose-5'-phosphate aminotransferase activity. The alternate enzyme seems to be also controlled at the gene-level by one or more intra-cellular purines (repression-derepression). The role of the aminotransferase in …

Homeotherm Productivity And Activity As A Function Of Microclimatological Variables, June K. Rushing

Biology

The purpose of this paper is to advocate the use of computer modeling as a tool in the study of homeotherm energetics. The relationships between measurable environmental variables and components of productivity were reviewed and discussed as a basis for data input in the models. Photoperiod, temperature, rainfall, and wind were suggested as measurable environmental parameters. The facets of productivity which can be predicted from these parameters are the timing, the energetic cost, and the energetic capacity for productivity.

Amino Acid And Protein Metabolism During Development Of The Alfalfa Weevil Hypera Postica (Gyllenhal), Darrel J. Gunderson

Biology

Amino acid and protein metabolism were studied during growth and development of the alfalfa weevil. The amino acids were separated and identified by two-dimensional thin layer chromatography on cellulose plates and quantitative determinations were made with a ninhydrin spectrophotometric method. The radioactive isotope glucose-U-C¹⁴ was used to determine amino acid requirements and their rates of synthesis. A total of 23 amino acids were identified in the fourth instar larvae. Of these, 21 were free amino acids and 17 were protein amino acids. Limited concentrations of methionine, Y-aminobutyric acid and tryptophan in the insect were directly correlated with their dietary …

Chemical Differences Between Nectar Of Onion And Competing Plant Species And Probable Effects On Attractiveness To Pollinators, Gordon D. Waller

Biology

Levels of potassium in nectar of onion, Allium cepa L., varied from 3600 to 13,000 parts per million, about ten times higher than that of nectar of competing flora tested. An open-pollinated amphidiploid derived from the interspecific cross, A. cepa x A. fistulosum L., was the only onion with nectar potassium level as low as that of competing flora, and it was more attractive to honey bees, Apis mellifera L., than was the common onion. Addition of potassium salts to sugar solutions at the rate of 1500, 3000, 4500, 6000, or 7500 parts per million potassium clearly reduced uptake of …

Tissue Mineral Imbalances In Cattle With Brisket Disease, Patricia H. Field

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twenty four cattle, six each of healthy cows and calves, and cows and calves with brisket disease, were obtained, examined and slaughtered. The concentrations of calcium, chloride, cobalt, copper, iron, magnesium, molybdenum, phosphorus, potassium, sodium and zinc; and percent absolute dry matter and percent ash were determined in tissues selected from the following: cardiac, hepatic, renal, osseous, whole blood and blood serum. In addition, certain physical and biological parameters were recorded for each animal. The results were analyzed as a 2 x 2 factorial, segregating the effects of age and brisket disease, and the age-disease interaction.

The following statistically significant …

An Examination Of The Inorganic Nitrogen Status Of A Soil Of The Alaskan Coastal Tundra Plain, Norton R. Munn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This experiment was designed to measure in situ concentrations of NH₄⁺ and NO₃^--N in a soil of the arctic coastal tundra plain, to determine if nitrification was taking place in this soil and to determine if the vascular plants growing in this soil could assimilate NH₄⁺-N.

The extractable NH₄⁺-N concentration was approximately 40 μg/g in the 0₁ horizon and 10 μg/g in the 0₂ horizon. The NO₃^--N concentration was approximately 5 μg/g in the 0¹ horizon and 4 μg/g in the 0_{2 …}

Attitudes Toward And The Consequences Of Infant Oral Pacification, Faye M. Preece

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was focused in two specific objectives: (1) to determine attitudes of professionals, namely pediatricians, general practitioners, and orthodontists toward the use of the oral pacifier; and (2) to determine the attitudes of primiparous mothers toward the use of the pacifier.

The mothers were chosen from the r1cKay-Dee Hospital in Oqden, Utah. They were divided into three groups: (1) 17 mothers with three-month- old babies, (2) 15 mothers with six-month-old babies, and (3 ) 15 mothers with nine-month-old babies, for a total of 47 mothers.

The professionals were divided into three groups: pediatricians, 10 general practitioners, …

Individual Family Contribution To Paper Pollution In Cache County, Carroll Porter Latham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Paper waste discarded by families of five persons in Cache County was studied for two seven-day periods. The sample consisted of 19 families comprised of a father who was employed full-time, a mother, and three children living at home. A background questionnaire was administered to each family for the purpose of describing the sample.

Sample families were given (1) plastic bags for storing of paper wastes and (2) bathroom tissue, the unused portion of which was collected with the other paper discards. The weight of all paper discards was tabulated for each family and an average was tabulated for families …

Cooperative Extension Service Organization And Administration In Utah And Thailand, Sommart Chinoim

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Thailand is an agricultural country with about 80 percent of the population operating farms. Agriculture is the main source of national income and 90 percent of all exports are agricultural products. The farms are small and a high percent of the farmers are illiterate which accounts for so many people remaining on farms. Even though agricultural development is under the National Economic and Social Development Plan, new methods of farming are not easily accessible to the small farmers. They still follow their ancestor's methods of cultivating, irrigating, and harvesting their crops. Most farmers operate subsistent farm units. They plant enough …

The Effect Of Heat Treatment Of Fresh Frozen Vells On Rennin Extractability, Leesther Mifflin Holm

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A procedure was developed for the extraction of rennet from fresh frozen vells. Frozen vells were minced in a Model VCM-25 Hobart Vertical Cutter/Mixer. Dry sodium chloride was added until the salt concentration in the moisture of the tissue was 10%. Salted tissue was placed in galvanized steel cells and heated in a water bath to 49, 54, 57 and 60 C for 0, 15, 30, 45 and 60 minutes. The heated tissue was dried to about 4% moisture at ambient temperature with the aid of an electric fan. The dried salted tissue was extracted with a sodium chloride solution …

Purification And Characterization Of A Protease From A Lamb Gastric Extract Used For Cheese Flavor Improvement, Ramjibhai V. Chaudhari

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An assay for catheptic activity of lamb gastric tissue extract has been proposed which involves the use of a pH 3.5 hemoglobin substrate following activation of zymogens at pH 2.0, 25C for 30 min.; and inactivation at pH 8.0, 40C for 30 min thereby eliminating the effects of pepsin and rennin. Cathepsin was isolated and purified by ammonium sulfate fractionation, acetone precipitation and gel filtration. The purified cathepsin represented approximately 50 fold increase in specific activity over the original extract and a recovery of 15% of the original activity. Degree of purity was monitored by isoelectric focusing in polyacrylamide gels. …

Detection And Quantitation Of Staphylococcus Aureus Deoxyribonuclease In Cheese, Cyril Newell Maughan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A specific method has been developed for the extraction and measurement of staphylococcal nuclease in cheese in which Staphylococcus aureus has grown. Ten grams of cheese sample were homogenized with ninety milliliters of pH ten buffer for three minutes. Ammonium sulfate fractionation was used and a forty to eighty percent fraction was collected and concentrated using ultrafilters. The nuclease activity was determined using a toluidine blue deoxyribonucleic acid agar slide method and a spectophotometric method. The DNA agar slide method was used to compare staphylococcal growth with nuclease production in cheese under varying conditions. When Staphylococcus aureus plate counts indicated …

Assay And Control Of Staphylococcal Enterotoxin A Development In Cheddar Cheese Slurries, Niranjan R. Gandhi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Attempts were made to adapt the microtiter hemagglutination inhibition assay technique for the assay of enterotoxin A. The presence of a potent hemagglutinin in crude and partially purified preparations and the instability of sensitized erythrocytes prevented its use for routine analysis of enterotoxin from culture media and foods.

A capillary tube immunological assay was developed in which 1 μ g of enterotoxin/ml was detected in less than 1 hr . Interfacial reaction of antisera and enterotoxin solutions in a 1 mm internal diameter capillary tube allowed rapid detection and serological typing of enterotoxins.

Staphylococcus aureus growth and enterotoxin A development …

Essential Tyrosine Residues In Calf Liver Uridine Diphosphoglucose Pyrophosphorylase, E.C. 2.7.7.9., Robert Carl Bachmann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The catalytic necessity of tyrosine residues in uridine diphospho- glucose pyrophosphorylase [E.C. 2.7.7.9] was investigated. Chemical modification of the pyrophosphorylase by N-acetylimidazole indicated that tyrosine residues were essential for activity. Approximately 23 of 112 tyrosines per molecule of 475,000 Daltons could be 0-acetylated. Solvent perturbation difference spectroscopy supported this number of exposed tyrosine side chains and in conjunction with chemical modification indicated that at least 11 to 12 tyrosyl residues per protein molecule are fully exposed. it her subst rate, uridine t riphosphate or uridine diphosphoglucose, afforded significant protection against inactivation by N-acetylimidazole.

The significance of these tyrosine residues is …