Index Catalog // ScholarsArchive@OSU

Influence of stocking density on grazing beef cattle performance, diet composition foraging efficiency, and diet quality on a late-spring early-summer native bunchgrass prairie

Creator:: Wyffels, Samuel A.
Abstract:: This study evaluated the influence of cattle stocking density on botanical composition of diet, diet preference, and cattle performance on the Zumwalt Prairie in Northeastern Oregon. In each of two years, 192 cow-calf pairs (549.27 kg, BCS = 4.89) and 48 yearling heifers (383.34 kg, BCS = 5.02) were stratified...
Resource Type:: Masters Thesis
Full Text:: Early- Summer Native Bunchgrass Prairie. Abstract approved: Timothy DelCurto ABSTRACT

Effects of forage quality and type of protein supplement on intake and digestibility in beef steers and performance of postpartum beef cows

Creator:: White, Jenny J.
Abstract:: Two experiments were conducted to evaluate the effects of forage quality and supplemental undegradable intake protein (UIP) level on intake, digestibility, and performance of beef cattle. In Exp. 1, five ruminally cannulated steers (BW = 456 ± 6 kg) were used in a 6 x 5 incomplete Latin square with...
Resource Type:: Masters Thesis
Full Text:: quality, moderate (M, 8.0% CP, 62.1% NDF) and low (L, 4.0% CP, 8 1.5% NDF), and supplement type, high UIP

Process communication through Proxy Pipe

Creator:: Chen, Shuping
Abstract:: Proxy Pipe is designed to be a bus in the transport layer of the communication between the two different processes. Its major function is to transfer bytes. When the client process tries to send a command to the server process, it will talk to a proxy as if it were...
Resource Type:: Capstone Project
Full Text:: Chen Department of Computer Science S(;ptember l 7, l 999 Ma_jo: P~0fessor: Dr. Timothy Budd

Effects of fiber electrostatic cling and moisture regain on Timothy grass pollen attraction

Creator:: Vaughn, Reyna J.
Abstract:: People will spend a large amount of their lifetime indoors where the air is filled with both indoor and outdoor allergens. Exposure to allergens can have a range of effects on the health of building occupants. Textiles make up a vast majority of the surfaces, such as draperies, sofas, pillows,...
Resource Type:: Masters Thesis
Full Text:: Timothy Grass Pollen Attraction AN ABSTRACT OF THE THESIS OF Reyna J. Vaughn for the degree of

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Creator:: Schaerer, Brett L.
Abstract:: The structuring of canopy arthropod communities was reviewed and investigated in relation to tree species diversity and its component factors, interspersion of different species and density of each tree species. Fifteen treatments of Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) (various densities and proportions of each) were randomly assigned...
Resource Type:: Masters Thesis
Full Text:: Brett L. Schaerer for the degree of Master of Science in Entomology presented on March 17, 2000. Title

The spectral backscattering properties of marine particles

Creator:: Whitmire, Amanda L.
Abstract:: The inherent and apparent optical properties of different ocean regimes are the basis for all optical remote sensing of the ocean. Ecological information derived from remote sensors therefore relies on having a detailed understanding of how particulate backscattering and absorption contribute to the bulk optical signal. The absorption characteristics of...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Amanda L. Whitmire for the degree of Doctor of Philosophy in Oceanography presented on

Factors influencing diet composition of beef cattle grazing mixed conifer mountain riparian areas

Creator:: Darambazar, Enkhjargal
Abstract:: Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available forage in the pasture, and shrub utilization by cattle during a 30-d late summer grazing period (Trial 1) and the effect of cow age (experience) on grazing distribution and diet composition (Trial 2) in mountain...
Resource Type:: Masters Thesis
Full Text:: : Timothy Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available

Influence of previous cattle and elk grazing on the subsequent diet quality and nutrient intake rate of cattle, deer, and elk grazing late-summer mixed-conifer rangelands

Creator:: Damiran, Daalkhaijav
Abstract:: Four studies were conducted on late-summer diet quality and quantity of cattle (Bos taurus), mule deer (Odocoileus hemionus hemionus), and elk (Cervus elaphus) in response to prior grazing by cattle and elk on mixed-conifer rangelands and on related research techniques. In our first study we assessed a photographic technique to...
Resource Type:: Dissertation
Full Text:: Daalkhaijav Damiran1, Douglas E. Johnson2, Timothy DelCurto3, Scott L. Findholt4, and Bruce K. Johnson4

The effects of timber harvest and herbivory on understory vegetation and composition of beef cattle diets on forested rangelands

Creator:: Walburger, Kenric J.
Abstract:: The objectives of the experiment were to: 1) determine the relationship between overstory canopy cover and ungulate herbivory on understory production composition and diversity and 2) determine the effects of timber harvest, ungulate herbivory and season of use on botanical composition and nutritional quality of beef cattle diets. Three randomly...
Resource Type:: Dissertation
Full Text:: tenure as superintendent and also for Dr. Timothy DelCurto for helping maintain this project. Dr

Management of stockpiled forages and optimal use of supplements by beef cattle while consuming low-quality forages

Creator:: Suverly, Norman A.
Abstract:: Three studies were conducted to evaluate: 1) rotationally grazed forage for late-summer stockpiling; 2) effects of lactation on self-fed supplement intake; and 3) influence of cow age on hand-fed supplement intake. For the first study, treatments consisted of non grazed, 2X and 3X grazed. Crude protein of forage grazed 3X...
Resource Type:: Masters Thesis
Full Text:: alfalfa and timothy (Phleum pratense L.) hay mix. Molasses supplementation alone lowered hay intake when

Bioenergetics of Rock Climbing

Creator:: Collier, Casey
Abstract:: This study will use a COSMED K5 portable metabolic unit to expand on the limited knowledge of the energy demands of top rope rock climbing. Participants will be experienced, consistent rock climbers. Two route difficulties (5.8 and 5.10) will be analyzed using a repeated measures randomized design to determine differences...
Resource Type:: Honors College Thesis
Full Text:: : ___________________________________________________________________________ Timothy Burnett Background: Abstract This study will use a COSMED K5 portable metabolic

Quantities of prostaglandins in whole and extended bovine semen and their potential effect on fertility following insemination

Creator:: Jaeger, John Ralph
Abstract:: Our objectives were to determine 1) the concentration of prostaglandin F2α (PGF2α) in whole and extended bovine semen, 2) if concentrations of prostaglandins in extended bovine semen are correlated to fertility, and 3) if PGF2α administered at the time of artificial insemination would improve conception rate. Concentration of PGF2α tended...
Resource Type:: Dissertation
Full Text:: : Timothy DelCurto Our objectives were to determine 1) the concentration of prostaglandin F2α (PGF2α

A climatography-based study of aerial reconnaissance probabilities for Oregon's Willamette Valley

Creator:: Spear, Timothy Bryant
Abstract:: The needs and markets for aerial photography have grown steadily with the increasing demands for improved resource management (Kodak, 1985, 2 & Simonett, 1983, 1). Aerial photography within the Willamette Valley could provide researchers and professionals with a broad range of data in disciplines such as agriculture, forestry, geology, and...
Resource Type:: Capstone Project
Full Text:: PROBABILITIES FOR OREGON'S WILLAMETTE VALLEY by TIMOTHY BRYANT SPEAR A RESEARCH PAPER submitted to THE

A point-data analysis of the Southern Oscillation Index (SOI) and its relationship to seasonal precipitation in the northwest United States

Creator:: Worley, Timothy J.
Abstract:: El Niflo and La Nifia are oceanographic and atmospheric phenomena that have been catalogued for well over a centuly. In El Nifio years, Peru's otherwise thy west coast is subjected to torrential rainfall. Higher ocean temperatures off the coast are deemed the culprit. Attempts to quantify this began in the...
Resource Type:: Capstone Project
Full Text:: ) AND ITS RELATIONSHIP TO SEASONAL PRECIPITATION IN THE NORTHWEST UNITED STATES by Timothy J. Worley

A study of cavitation instabilities in solids

Creator:: Puttapitukporn, Tumrong
Abstract:: Cavitation instabilities in elastic-plastic solids under spherically-symmetric and axisymmetric loadings were investigated using the finite element method. Both quasi-static and dynamic analyses were used to solve these problems. In the quasi-static analyses, we investigated a cavitation instability in elastic/perfectly-plastic, linear hardening elastic-plastic, power hardening elasticplastic, and constrained silver materials. Here,...
Resource Type:: Dissertation
Full Text:: Cavitation Instabilities in Solids. Abstract anoroved: Timothy C. Kennedy Cavitation instabilities in

SPEAR : Superlative Plagiarism Explorer And Reporter

Creator:: Pavithran, Siddharth
Abstract:: In this project, we have investigated three different techniques for plagiarism detection and have compared its effectiveness against that of an unaided human grader. The techniques investigated were word frequency analysis, sentence inclusion analysis and sub string inclusion analysis. We found that a combination of word frequency analysis and sub...
Resource Type:: Capstone Project
Full Text:: L SPEAR Superlative Plagiarism Explorer And

A transparent overlay for computer-based presentations

Creator:: Modem, Chandrakanth L.
Abstract:: The project aims at building an application that would simulate a transparency that can either be overlaid on top of the graphical display of another application or used as a stand-alone by accepting input from a keyboard or a mouse to enhance a presentation. The project provides an environment to...
Resource Type:: Capstone Project
Full Text:: PRESENTATIONS Major Professor Minor Professor Committee member Dr. Timothy Budd Dr. Gregg Rothermel Dr

Watershed response to western juniper control

Creator:: Deboodt, Timothy L.
Abstract:: Western juniper (Juniperus occidentalis) encroachment has been associated with increased soil loss and reduced infiltration resulting in the loss of native herbaceous plant communities and the bird and animal species that rely on them. Hydrologically, however, change in water yield has been linked with the amount of annual precipitation a...
Resource Type:: Dissertation
Full Text:: OF THE DISSERTATION OF Timothy L. Deboodt for the degree Doctor of Philosophy in Rangeland

Measuring protein metal binding via mass spectrometry : copper, zinc superoxide dismutase and amyotrophic lateral sclerosis

Creator:: Rhoads, Timothy W.
Abstract:: Amyotrophic lateral sclerosis (ALS) is a devastating disease characterized by the progressive degeneration of motor neurons. Dominantly-inherited mutations to the antioxidant enzyme Cu,Zn superoxide dismutase (SOD1) cause 3-6% of all ALS cases. The complete mechanism behind the toxicity of mutant SOD1 remains unclear, although significant evidence points to aberrant or...
Resource Type:: Dissertation
Full Text:: Timothy W. Rhoads for the degree of Doctor of Philosophy in Biochemistry & Biophysics presented on July

Nitrogen use in container-grown woody ornamentals

Creator:: Sandrock, David Ray, 1971-
Abstract:: Lasting, effective solutions to nitrogen (N) loss from container nurseries must address layers of complexity ranging in scale from whole system nursery management to gene expression. Group-based On-site Active Learning (GOAL) was developed to aid nursery managers and related stakeholders (e.g. neighbors, policy makers, regulating agencies, researchers) in developing a...
Resource Type:: Dissertation
Full Text:: Container-grown Woody Ornamentals. Abstract Approved: „ ^ ._ AAita N. Azarenko "^ Timoliy L

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