Digital Commons Network^™

Aflatoxin B1 Metabolism In Mammalian Pulmonary Tissue, J. Michael Eichelberger

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Aflatoxin B₁ (AFB₁) is a potent dietary hepatocarcinogen and may be a lung carcinogen when inhaled. To study the relative ability of lung and liver to metabolize AFB₁, a susceptible (Swiss-Webster rat) and resistant species (Syrian golden hamster) were pretreated with inducing agents in order to identify specific AFB₁ metabolizing enzymes in each tissue.

Analysis of AFB₁-exo-epoxide (AFBO) formation, O-dealkynation assays, and protein immunoblots demonstrated that cytochrome P450 (CYP) 1A proteins were overexpressed in both the lung and liver of hamsters pretreated with 3-methylchyolanthrene (3-MC). Only CYP1A1 was expressed in the lung …

A Study Of The Interactions Between Milk Proteins And Soy Proteins, Venkatachalam Narayanaswamy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research investigates the protein interactions that occur when soy protein is added to milk and subjected to renneting or heating. Milk was fortified with 20% soy protein and enzymic coagulation studied at 35°C at various pH's and CaCl₂ levels. The first part deals with the interaction between milk and soy proteins during rennet-induced milk coagulation. The first goal was to determine how soy proteins affected milk coagulation. The effects of native versus heat-denatured soy proteins on rennet coagulation time and curd firmness were compared. lmmunogold labeling along with transmission electron microscopy was used to identify and localfze soy …

Isolation And Biochemical Characterization Of Acid- And Bile- Tolerant Strains Of Lactobacillus Acidophilus And Bifidobacterium Bifidum, Lan-Szu Chou

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lactic acid bacteria have been reported to be used as a health adjunct in food for u many years. However, these health benefits have not been proven. and how these bacteria pass through the digestion process and remain viable in the human intestinal tract is still not clear. The aim of this work was to isolate mutants from Lactobacillus acidophilus or Bifidobacterium bifidum that could tolerate the conditions of the digestion process (low pH and bile conduction) and to characterize these isolated mutants.

Acid- and bile-tolerant mutants of L. acidophilus were isolated from parental strains successfully using natural selection techniques. …

Quantitation Of Bovine Serum Albumin In Cow's-Milk-Based Infant Formulas And Removal Of Bovine Serum Albumin From Cow's Milk And Whey Protein Isolates, Patricia Z. Marincic

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Early introduction of cow's-milk-based infant formulas, in particular the ABBOS epitope of bovine serum albumin (BSA), has been implicated as an autoimmune trigger in the pathogenesis of insulin dependent diabetes mellitus (IDDM). A direct enzyme-linked immunosorbant assay (ELISA), using polyclonal anti-BSA antibodies, was developed to determine the BSA content of cow's milk and 15 infant formulas. Powdered high-whey (60%) formulas averaged 41 mg BSA/100 ml; 2% milk contained 52 mg BSA/100 ml; and the high-casein formulas averaged 13 mg/100 ml. BSA content of powdered polymeric formulas and cow's milk varied directly with the whey protein concentration (correlation coefficient = 0.8445, …

Evaluation Of Physical And Behavioral Traits Of Llamas (Lama Glama) Associated With Aggressiveness Toward Sheep-Threatening Canids, Sandra M. C. Cavalcanti

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Canid predation poses a serious threat to the sheep industry in the United States. Llamas are becoming popular among livestock producers as part of their predation management programs but there is little information on the factors associated with llama guarding behavior. This study examined several physical and behavioral attributes of individual llamas to assess whether they might predict the aggressiveness llamas display coward canids. The study was conducted in three phases. The first involved determining some physical and behavioral traits of individual llamas. Twenty individuals were randomly assigned to one of four groups (n = 5/group) and frequencies with which …

Modelling Vegetation Cover Types Using Multiseasonal Remotely Sensed Data To Compare Ecotones At Multiple Spatial And Spectral Resolutions, Kimberly Patraw

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Army National Guard Bureau has implemented a cooperative project with Utah State University to help with the use, display, and evaluation of environmental data for maintaining land condition. Camp Grayling, Michigan, is comprised of deciduous and evergreen forest types. Use of remote sensing for classification has been limited in this region due to the difficulty of species-level classification using single-date remote-sensing techniques. Also, remote sensing has traditionally focused on mapping homogenous zones rather than vegetation boundaries, while one of the concerns for land managers is the nature of vegetation edges (ecotones).

This study analyzed each season and band from …

The Economic Role Of Range Livestock Production In Kasungu Agricultural Development Division (Kadd), Malawi, Phillip H. W. Phiri

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was conducted to determine the effects of season and auction and produce marketing systems on prices received by farmers for livestock sales and the effect of price on cattle numbers sold in KADD. Livestock population, carrying capacity, and stocking rate were estimated. Data were analyzed using pie charts, regression methods, and analysis of variance.

There was no significant difference (P=.06) between cattle prices per kilogram during the wet season and after harvest. During the wet season, significantly more cattle were sold than after harvest (P< .001) to purchase food and farm inputs, and pay school fees and medical bills. Market price was only a secondary factor.

Carrying capacity and stocking rate were estimated at 15.00 kg …

Delineation Of Ecological Units For The Ashley National Forest, At The Landscape Level, Using Classification Tree Modeling, Teresa H. Swiatek

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study integrated remotely sensed data, geographic information system (GIS), and classification tree-based modeling to delineate ecological units for the Ashley National Forest. Data points, provided by the Ashley National Forest, with a known location and dominant vegetation type, were related to data layers that were determined to be helpful in a landtype classification. These layers included elevation, slope, aspect, potential solar irradiation, precipitation, geology, basins, Landsat thematic mapper (TM) bands 3, 4, 5, and 6, and basic land cover. These points, with their related information, were then used to train the tree-based model for landtype classification. This resulted in …

Journals Under Attack: Faculty And Researchers' Creative Solutions To Access Problems (Or, Theft Is The Answer. What Was The Question?), Judith R.J. Johnson, Betty Rozum

Library Faculty & Staff Publications

Escalating journal subscription costs and concurrent library and institutional budget cuts have precipitated the cancellation of journal subscriptions by many research and academic libraries. How does the faculty and research community obtain the information no longer provided for them by their university libraries? Resource sharing among libraries has been a traditional solution to this dilemma, but is not the only solution employed by researchers and faculty. Part of a study conducted at Utah State University (USU) examines the methods faculty and researchers use to obtain access to materials not held by the University Libraries, focusing on identifying unique or unconventional …

Marginalia No. 3, Merrill-Cazier Library

Marginalia

Volume 1, Number 3 (Issue no. 3): Spring Issue 1997

THE LEGACY OF ANNE CARROLL MOORE-Deb Boutwell, Dir. Of Moore Library shares some history

BRAVE NEW LIBRARIES- Cataloguing Head, Reed Painter, on Prof. Cannon’s Concerns (see last issue).

BRAVING NEW LIBRARIES- Collection Dev. Head, R.B. Schockmel also addresses Prof. Cannon’s concerns.

KIDS CONNECT @ THE LIBRARIES-ALA Technology Initiative provides training for online access for children

LIBRARY ADVOCACY-a list of useful information on libraries & funding issues from the ALA

FRIENDS SUMMER LECTURE SERIES -A listing with dates of the upcoming lectures

LISTING OF NATIONAL LIBRARY WEEK -including speakers, book sales, …

Utah Science Vol. 58 No. 1, Spring 1997

Utah Science

2 UTAH’S PRIVATE FORESTS IN DANGER

6 DON’T BLAME SYNTHETIC CHEMICALS FOR CANCER

10 GETTING TO THE ROOT OF FOREST DISEASE

12 MANAGING THE LAND FOR THE PEOPLE … AN D WITH THE PEOPLE

16 SMOKEY BEAR … THE REST OF THE STORY

Investigations On The Effect Of Grazing Intensity On The Transfer Of Radionuclides To Cow's Milk, G. Voight, C. Schotola, N. M.J. Crout, J. Absalom

All U.S. Government Documents (Utah Regional Depository)

No abstract provided.

The Fate And Disposition Of Metolachlor And 2, 4-D Under Irrigated Corn And Turf, Ghassan R. Musharrafieh, Richard C. Peralta, Robert W. Hill, Howard M. Deer

Civil and Environmental Engineering Faculty Publications

A field lysimeter experiment was conducted during the summers of 1993 and 1994, at the River Laboratory, Utah State University, Logan, Utah. The intent was to study the fate and disposition of metolachlor and 2,4-D in a one dimensional soil system. Metolachlor was applied to corn and 2,4-D was applied to turf. The mobility, persistence, and degradation of these herbicides were investigated in the field lysimeters using four irrigation treatment levels on corn and two irrigation levels on turf. The four irrigation levels applied to corn were 0, 30, 60, and 120 percent of potential evapotranspiration. The two irrigation levels …

Macrophage Response To Polymethylmethacrylate Particles, Stephen M. Horowtiz

Cells and Materials

This paper reviews studies performed by this laboratory involving the macrophage response to implant particles. Through the development of a tissue culture model, we have studied the events which occur following macrophage phagocytosis of bone cement particles, the released mediators and cell interactions which may ultimately lead to bone resorption, and the inhibition of this process with the use of pharmaceutical agents. This is divided into the following sections: Histologic response of macrophages to cement particles I toxicity I and mediator release, the effects of particle size and composition on mediator release by macrophages, macrophage I osteoblast interactions, macrophage I …

Usable Pasts, Tad Tuleja

All USU Press Publications

In Usable Pasts, fourteen authors examine the manipulation of traditional expressions among a variety of groups from the United States and Canada: the development of a pictorial style by Navajo weavers in response to traders, Mexican American responses to the appropriation of traditional foods by Anglos, the expressive forms of communication that engender and sustain a sense of community in an African American women's social club and among elderly Yiddish folksingers in Miami Beach, the incorporation of mass media images into the "C&Ts" (customs and traditions) of a Boy Scout troop, the changing meaning of their defining Exodus-like migration to …

Early Weaning Of Calves May Be Economical (Summary), Clell V. Bagley, Norris J. Stenquist, Donald L. Snyder

All Archived Publications

No abstract provided.

Breeding Soundness In Rams: How To Do It And How To Interpret It, Clell V. Bagley

All Archived Publications

No abstract provided.

Summary Of Ration Trial At Weaning, Clell V. Bagley

All Archived Publications

No abstract provided.

1997 Annual Report, Various Authors

Annual Reports

No abstract provided.

A Final Report On The Management Of The Huntington And Hunter Power Plant Farms, E. Bruce Godfrey

Economic Research Institute Study Papers

No abstract provided.

Feasibility Of A Dairy Cooperative Purchasing An Existing Feedmill, Deevon Bailey

Economic Research Institute Study Papers

A dairy cooperative in Wayne County, Utah, is considering purchasing a small, local, bankrupt feedmill. A financial analysis was conducted to determine the economic feasibility of the cooperative purchasing the assets of the feedmill. To be price competitive with a nearby feedmill, the cooperative's feedmill would need an annual production volume equal to the annual feed consumption of3,000 dairy cows.

Relevant Pacific Basin Market Areas For The U.S. Pork Industry, Christopher B. Barrett, Deevon Bailey, Jau-Rong Li, Erica Suet-Ying Lai

Economic Research Institute Study Papers

This project involved three steps. First, we assembled a consolidated data set on prices, trade flow volumes, and transfer costs-the costs of moving product from one location to another-for feed grains (com and soybean meal), slaughter hogs, and fresh or chilled carcasses and primal cuts (bellies, hams, loins, ribs) among the eight main pork economies of the Pacific Rim (Australia, Canada, Japan, Korea, Mexico, the Philippines, Taiwan, the United States), covering the years 1990-96. By making available for the first time comparable international data, we have helped resolve a major stumbling block to careful empirical analysis of factor and product …

Error Correction Models And Spatial Market Integration: Evidence For Cattle Markets In The U.S., Gertrude S. Muwanga, Donald L. Snyder

Economic Research Institute Study Papers

Utilizing Cattle-Fax data, Granger-causality error correction models were used to determine whether the sufficient condition for market integration was satisfied for six cattle classes and twelve markets for which the necessary condition was already indicated. The bivariate results indicated that all the markets satisfied the sufficient condition, at least in one direction. The lightweight animals exhibited bidirectional causality more often than the heavy weight animals. Overall, bidirectional causality was most frequent for 400-pound steers and least frequent for 800-pound steers. The multivariate results were less optimal due to the restricted number of lags.

Biological Response To Particulate Debris: In Vitro And In Vivo Studies, A. S. Shanbhag, J. E. Dowd, J. J. Jacobs, D. M. Tramaglini, T. T. Glant, J. Black, H. E. Rubash

Cells and Materials

In this study, we compared the results of a human monocyte in vitro model and a canine in vivo model, to evaluate the response to different types of particulate wear debris. Both the in vitro and in vivo studies demonstrated that titanium-6 aluminum-4 vanadium (TiAIV), ultrahigh molecular weight polyethylene (UHMWPE) and other particulate wear debris are stimulatory to macrophages and elicit release of several identifiable mediators involved in periprosthetic inflammation and bone resorption. Further, in the in vivo studies, these same particles initiated the formation of interfacial membranes which were histologically and biochemically similar to those seen in clinically failed …

Manure Management Inwisconsin: Results Of The 1995 Wisconsin Farmer Poll, Douglas B. Jackson-Smith, M. Nevius, B. Barham

Sociology, Social Work and Anthropology Faculty Publications

Over the past 20 years, a significant amount of state and federal money has been spent researching the impacts of farming activities on water quality in Wisconsin. Manure and nutrient management practices have been identified as critical variables affecting the environmental performance of most farms in the state. To protect surface and groundwater resources, a number of technical and managerial solutions have been designed to minimize nutrient leaching and runoff from barnyards and farm fields. An impressive array of educational programs, financial subsidies, and regulatory incentives has been employed to encourage livestock producers to manage their manure in environmentally responsible …

The Impact Of Public Land Use On The Economy Of Rich County, Utah, Kim Chapman, E. Bruce Godfrey, Darwin B. Nielsen

Economic Research Institute Study Papers

No abstract provided.

Sintered Carbonate Apatites As Bone Substitutes, Yutaka Doi

Cells and Materials

Sintering of carbonate apatites was investigated and the usefulness of sintered specimens as bone substitutes was evaluated in vitro and in vivo. Osteoclasts appeared to be capable of resorbing sintered carbonate apatite, which was as soluble as deproteinated bone and much more soluble than sintered hydroxyapatite in weak acids. In skull defects of Wistar rats, sintered carbonate apatite particles resorbed to an appreciable extent, but the rate of resorption did not exceed that of new bone formation. At 4 weeks after implantation the defects were filled almost completely with new bone that compared favorably with the host bone. These …

Preparing Bulls For Breeding Season, Clell V. Bagley

All Archived Publications

No abstract provided.

Transmission Electron Microscopical Study Of Fibroblast Attachment To Microtextured Silicone Rubber Surfaces, E. T. Den Braber, J. E. De Ruijter, H. J. E. Croes, L. A. Ginsel, J. A. Jansen

Cells and Materials

Cellular attachment has been suggested to be highly influenced by the micromorphology of the substratum surface. To test this hypothesis, smooth and microtextured silicone substrata were produced, which possessed parallel surface grooves with a groove and ridge width of 2.0 (SilD02), 5.0 (SilD05), and 10 µm (SilD10). Groove depth was approximately 0.5 µm. After culture of rat dermal fibroblasts (RDFs) on these substrata for 3 and 5 days, the samples were prepared and sectioned for transmission electron microscopy with a specially developed preparation technique. On the SilD02 and SilD05 surfaces, it was found that the RDFs attached to …

Biofilms In Dental Unit Waterlines: Ultrastructural And Cytochemical Analysis, J. Barbeau, C. Avezard, E. Faucher, S. Zalzal, A. P. Prévost

Cells and Materials

Dental unit waterlines are heavily colonized by bacteria which contaminate the water used to perform intra-oral, and sometimes invasive, procedures. There is little information on the nature of the biofilm colonizing the flexible plastic tubing used to supply water to the different handpieces. We have therefore undertaken quantitative microbial analysis and ultrastructural studies of these biofilms by direct counting with the epifluorescent filter technique and by transmission and scanning electron microscopy after staining with ruthenium red and periodic acid-thiosemicarbazide-silver proteinate to visualize the composition and the distribution of exopolysaccharides and intracellular polysaccharides. The biofilm was revealed as a non-uniform structure …