Digital Commons Network^™

The Utah Statesman, September 18, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, September 8, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, September 6, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, August 2000, Orientation, Utah State University

The Utah Statesman

Utah State University student newspaper orientation issue.

2000 Semi-Annual Report, Various Authors

Annual Reports

No abstract provided.

1999 Annual Report, Various Authors

Annual Reports

No abstract provided.

2000 Annual Report, Various Authors

Annual Reports

No abstract provided.

An Accurate Metabolic Simulator For Indirect Calorimetry System Validation, Craig T. Flanagan, J. Orr, D. Westenskow

Utah Space Grant Consortium

A metabolic simulator capable of simulation of respiratory oxygen consumption (VO₂) and carbon dioxide production (VCO₂) for validation of indirect calorimetry systems is described. The metabolic simulator adds/removes respiratory gases by way of mass flow controllers to/from a physiologically realistic lung simulator (Michigan Instruments Inc. Training/Test Lung). The metabolic simulator and Michigan Instruments Training/Test Lung in combination are capable of simulating a wide range of metabolic and physiologic lung conditions. Simulation of VCO₂ is achieved by adding controlled amounts of carbon dioxide to the Training/Test Lung every (mechanical ventilator delivered) breath cycle. VO₂ simulation …

Insights, Spring, 2000, Utah State University

Discovery Magazine

Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.

Effects Of Forced Weaning On Mother-Daughter Associations And Reproduction In Bison (Bos Bison), Jennifer S. Brookshier

Biology

While the social organization of ungulates has received much attention, the nature and extent of the mother-daughter association is still not fully known for some species. In bison, mothers and daughters have a long-term association that may extend beyond the age of weaning. This association is believed to facilitate the daughters' social integration into the herd. I compared the mother-daughter association for 29 yearling females that were forcibly weaned from their mothers to that of 19 yearling females that were naturally weaned. Forcibly weaned yearlings did not reassociate with their mothers following winter separation, while naturally weaned yearlings associated with …

Sexual Dichromatism In Bohemian Waxwings, James Brian Burns

Biology

If a species of birds is monomorphic, how do individuals identify members of the opposite sex? Birds may use cues in the ultraviolet wavelengths (350-400 nm), which are invisible to humans. This thesis presents evidence of sexual dichromatism in Bohemian Waxwings (Bombycilla garrulus). The strongest differences occurred in the tail coverts, the yellow tail tips, and the red waxy tips of the secondaries. Like other birds, waxwings derive colors from diet-based pigments and from synthesized colors. Because these color types differ in origin, each could provide different visual information about a bird's condition. This led to the testing …

Effects Of Carbohydrate Foods On Foraging Decisions Of The Parasitoid Bathyplectes Curculionis (Thomson) (Hymenoptera: Ichneumonidae), Helen Spafford Jacob

Biology

In a series of field and laboratory experiments, I explored the trade-off between self-maintenance and current reproduction for the parasitoid Bathyplectes curculionis (Thomson)(Hymenoptera: Ichneumonidae), an economically important natural enemy of the alfalfa weevil, the most significant pest in forage alfalfa. Floral nectars, pea aphid honeydew, and artificial foods such as sugar sprays are likely to assist B. curculionis in meeting its self-maintenance needs. Once these needs are met then B. curculionis females may be more likely to search for hosts to parasitize. However, these foods must not only be available, but accessible, of high quality, and detectable, to be of …

The Utilization Of Steep Slopes By Desert Tortoises (Gopherus Agassizii) In The Western Mojave Desert, Ty J. Gardner

Biology

Desert tortoises (Gopherus agassizii) were located on steep slopes at three sites in the western Mojave Desert. These sites were located at: 1) the rifle range of the Marine Corps Logistics Base, Barstow, California, 2) the southern boundary of the Fort Irwin National Training Center, California, immediately west of Manix Tank Trail, and 3) the Lava Range of the Marine Corps Air Ground Combat Center, Twentynine Palms, California. Additionally, a valley site at the Sand Hill range of the Marine Corps Air Ground Combat Center, Twentynine Palms, California, was included for comparison. Study tortoises were found on slopes …

Utah State University Commencement, 2000 – Main Campus, Utah State University

Commencement Programs

107th Annual Commencement of Utah State University

Molecular And Morphological Identification Of An Endophytic Fusarium Isolated From Wheat And Characterization Of Its Laccases In Comparison To Affiliated Fusarium Isolates, Sun Il Kwon

Biology

A fungal isolate present as a seed endophyte caused disease in wheat and other cereals when grown under stressed conditions. The isolate was identified as a member of the Asian clade of the Gibberella fujikuroi species complex in the genus Fusarium, members of which are known as plant pathogens and producers of mycotoxins. The closest relative to the fungus was Fusarium proliferatum, although none of the previously described species was identical in all morphological and molecular phylogenetic characters. At least six laccase isozymes were detected in mycelial extracts or from extracellular culture filtrates of the Fusarium-wheat isolate. …

The Effect Of Exopolysaccharide-Producing Cultures On The Moisture Retention And Functional Properties Of Low Fat Mozzarella Cheese, David B. Perry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Low fat Mozzarella cheese was made using exopolysaccharide-producing starter cultures consisting of single strains of Streptococcus thermophilus MR-1C and Lactobacillus delbrueckii ssp. bulgaricus MR-1R with or without the addition of mesophilic exopolysaccharide-producing adjunct mixed culture consisting of Lactococcus lactis ssp. lactis and Lactococcus lactis ssp. cremoris. A control cheese was made using a non-exopolysaccharide-producing starter culture consisting of S. thermophilus TA061 and Lactobacillus helveticus LH100. Cheeses were analyzed for moisture, melt, fat, and protein. Cheeses made with the addition of the mesophilic exopolysaccharide-producing adjunct culture showed significant differences in moisture, but not in melting properties when compared to cheeses …

Affinity Purification Of Bovine Lactoferrin And Bovine Transferrin From Using Immobilized Gangliosides, Seung-Hee Nam

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bovine lactoferrin (BLF) and bovine transferrin (BTF) are major-iron transport and regulation proteins found in bovine whey. BLF and BTF must interact with the eukaryotic cell surface to mediate their biological function of iron delivery and cellular functions of inflammatory and immunological modulation. As common components of the eukaryotic cell surface, gangliosides were used for affinity purification of BLF and BTF.

Bovine gangliosides were isolated from fresh buttermilk and covalently immobilized onto controlled-pore glass beads (66 μg/g beads). After the matrix was loaded with whey protein (WPI or WPC), lactoferrin was eluted with 1 M NaCl and identified by N-terminal …

Influence Of Limited Proteolysis, Heat Treatment, And Ph On The Whiteness Of Skim Milk, Xiaoshan Li

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Health consciousness drives people to drink skim milk. Yet, improving the blue-white appearance and watery texture of skim milk is necessary to make consumers happy with skim milk. In this study, the influence of limited proteolysis with soluble or immobilized proteases, heat treatment, and pH on the whiteness of skim milk were examined to meet this goal.

Limited proteolysis with milk-clotting enzymes increased the whiteness of skim milk. the proteases porcine pepsin and chymosin were immobilized onto nonporous ceramic, glass, and controlled pore glass (CPG) beads. The enzymes were coupled to beads either directly or via crosslinker proteins. Pepsin, immobilized …

Health And Lifestyle Among Ute Native American Elders, Laura L. Prestwich

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A basic health and lifestyle questionnaire was given to a convenience sample of 103 Ute elders, age 50 and older. Fifty-three percent reported being diagnosed with diabetes. The mean BMI (body mass index) was 33.31 (SD=8.72). For descriptive purposes, BMI was divided into three categories: less than 25, 25-29.99, 30 or above. Eleven percent were in the BMI category of less than 25. Thirty percent of Ute elders reported a BMI between 25-29.99. Fifty two percent had a BMI of 30 or above. Diabetes rates among this Ute elder sample were significantly lower with a lower income, lower education level, …

The Effect Of Buttermilk Fraction Concentrates On Growth And Iron Uptake And Transport By Caco-2 Cell Cultures, Yoo-Hyun Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To examine the effect of buttermilk fractions on growth, iron transport, and uptake, Caco-2 cells (human colon adenocarcinoma) were grown in a bicameral chamber. The Caco-2 cell culture system is a useful model to study micronutrient utilization in the human enterocyte, because Caco-2 cells continuously differentiate and form a monolayer, which has high polarity, a well-developed brush border, and a tight junction.

Iron bioavailabilty in various milks is very different depending upon milk composition. The fat fraction especially is known to be associated with iron absorption, because the fat fraction has milk fat globule membrane (MFGM), which contains bioactive molecules …

Effects Of Ph And Calcium Level On Extrusion-Textured Whey Protein Products, Andrea B. Hale

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of altering pH and calcium level during whey protein extrusion were assessed by measuring the protein solubility and WHC of the textured whey protein (TWP). TWP samples were produced by extruding dry mixtures of 2/3 WPC 80 (80% protein) and 1/3 cornstarch using screw speed of 200 rpms, feed rate of 23 g/min, water flow rate of 11 g/min, and product temperature of 150°C. The levels of acid and base were adjusted by adding concentrated HCl or NaOH, respectively, to the water source. Calcium was added to the raw mix in the form of calcium chloride dihydrate before …

Returns To Public Agricultural Expenditure Under Uncertainty, Sanjeev Misra

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A vast literature has investigated the returns to investment in agriculture research and generally found extremely high rates of return. These results suggest policymakers would do well to maintain or increase resource allocation to public agricultural research. Remarkably little attention has been paid, however, to the issue of how best to allocate public agricultural research funding between competing research areas and organizations. This paper considers the relative returns to alternative uses of public agricultural research funds committed to the agricultural experiment stations of 10 western states of the United States over the years 1967-91. A model of expected utility maximization …

An Investigation Of The Cone And Seed Insects Of Whitebark Pine And Alpine Larch Emphasizing The Western Conifer Seed Bug (Hemiptera: Coreidae) And The Larch Cone Fly (Diptera: Anthomyiidae), Laurel K. Anderton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Laboratory and field feeding tests with Leptoglossus occidentalis Heidemann proved that both immature and mature seed bugs can use cones and foliage of whitebark pine, Pinus albicaulis Engelmann, as a food source for 1- to 2-week periods. Damage to unprotected whitebark pine cones by seed bugs ranged from 0.3 to 2.1 % of seeds per cone, and for bagged cones averaged 0.7% of seeds per cone. Total insect damage ranged from 0.4 to 7.2% of seeds per cone. A seed chalcid, Megastigmus sp., was documented for the first time on whitebark pine and damaged 4.7% of examined seeds at one …

The Utah Statesman, April 10, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, March 8, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, March 3, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, February 23, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, February 14, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, February 11, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, January 19, 2000, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.