Index Catalog // ScholarsArchive@OSU

Characteristics of semi-insulating GaAs photoconductive detectors under steady state illumination

Creator:: Yang, Howard C.
Abstract:: The optical and electrical characteristics of semi-insulating GaAs photoconductive detectors made with ohmic and Schottky contacts are studied in this thesis. Current - voltage measurements are made both in the dark and under varying power levels of HeNe laser (6328 Å) illumination. DC photocurrent gain is then calculated as a...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Electrical and Computer Engineering presented on November 26, 1986. Title

Methodology for cuticular identification of selected eastern Oregon range plants

Creator:: Schrumpf, Barry J.
Abstract:: Animal dietary preferences have been studied by feeding-site examinations, animal observation, and stomach and esophageal collections. Analysis of fecal material for undigested plant cuticle is another means for obtaining the same information. This study was conducted to: (1) prepare a microscope slide series depicting the surface features of leaves and...
Resource Type:: Masters Thesis
Full Text:: eastern Oregon range plants, (2) develop a key to identification of these plant surfaces using slides

Forage utilization estimates in relation to ecological units in the Wallowa mountains of northeastern Oregon

Creator:: Johnson, Walter Van-Gale
Resource Type:: Masters Thesis
Full Text:: . Root distribution classes. 7. Relation of key species, key areas, plant communities and range types

Fabrication and characterization of p-type CuO / n-type ZnO heterostructure gas sensors prepared by sol-gel processing techniques

Creator:: Ravichandran, Ram
Abstract:: Increased interest in the field of sensor technology stems from the availability of an inexpensive and robust sensor to detect and quantify the presence of a specific gas. Bulk p-CuO/n-ZnO heterocontact based gas sensors have been shown to exhibit the necessary sensitivity and selectivity characteristics, however, low interfacial CuO/ZnO contact...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Thomas K. Plant Increased interest in the �eld of sensor technology stems from the

Evaluation of dry-weight-rank and microscopic point techniques for seasonal botanical analysis of two pasture mixtures

Creator:: Bauer, Welby
Abstract:: This study was undertaken to evaluate the dry-weight-rank and microscopic point methods for determining botanical composition on perennial ryegrass (Lolium perenne L.) - subclover (Trifolium subterraneum L.) and tall fescue (Festuca arundinacea Schreb.) - subclover pasture mixtures throughout a grazing season. Botanical composition was determined on a monthly basis from...
Resource Type:: Masters Thesis
Full Text:: SCIENCE (Name) (Degree) in RANGE MANAGEMENT presented on Apr; 1 2R, 1 969 (Major) (Date) Title

Evaluation of species composition by four methods on two perennial grass pastures (Festuca arundinacae Schreb. and Lolium perenne L.) grazed lightly and heavily in western Oregon

Creator:: Pessot Zorich, Rafael
Abstract:: The present study was undertaken to evaluate the seasonal botanical composition of two grass pastures, tall fescue (Festuca arundinacea Schreb.) and perennial ryegrass (Lolium perenne L.). Botanical composition was determined by four methods: dry-weight-rank, weight-estimate, hand separation, and the constituent differential, with cattle and sheep grazing at two intensities. The...
Resource Type:: Masters Thesis
Full Text:: Western Oregon AN ABSTRACT OF THE THESIS OF Rafael Pe s sot Zorich for the M S. in Range Management

Grating-tuned external cavity diode lasers

Creator:: Falconer, Beate Stephan
Abstract:: Diode lasers have many advantages such as small size, high efficiency and small angular dispersion of the collimated beam. However they also have some problems like lack of frequency stability. They can not be tuned in wavelength. An external cavity can solve these problems and decrease the laser linewidth. To...
Resource Type:: Masters Thesis
Full Text:: approved : Prof Dr. Thomas K. Plant Diode lasers have many advantages such as small size, high efficiency

Fiber Bragg grating-tunable diode laser

Creator:: Ericksen, Doug
Abstract:: Continuously tunable diode laser sources coupled to single-mode fiber are useful sources for fiber Bragg grating (FBG) strain sensors. This paper describes the development and fabrication of such a device. An introduction is given describing applications of tunable lasers and some of the different methods of creating a tunable diode...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________ Thomas K. Plant Continuously tunable diode laser sources coupled to single-mode fiber

Influence of adjustable speed drive on induction motor fault detection using stator current monitoring.

Creator:: Al-Shahrani, Ali
Abstract:: The detection of motor faults at their incipient stage is of prime importance to any industrial plant. The introduction of adjustable speed drives has improved the control and the efficiency of induction motors, however, this has changed the nature of motor faults and how they can be detected. Current signature...
Resource Type:: Masters Thesis
Full Text:: Engineering presented on August 26, 2005. Title: Influence of Adjustable Speed Drive on Induction Motor

A dual-frequency diode laser displacement sensor

Creator:: Hwang, Nam
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy Thomas K. Plant The purpose of this work is to develop an accurate non

ScholarsArchive@OSU

Characteristics of semi-insulating GaAs photoconductive detectors under steady state illumination

Methodology for cuticular identification of selected eastern Oregon range plants

Forage utilization estimates in relation to ecological units in the Wallowa mountains of northeastern Oregon

Fabrication and characterization of p-type CuO / n-type ZnO heterostructure gas sensors prepared by sol-gel processing techniques

Evaluation of dry-weight-rank and microscopic point techniques for seasonal botanical analysis of two pasture mixtures

Evaluation of species composition by four methods on two perennial grass pastures (Festuca arundinacae Schreb. and Lolium perenne L.) grazed lightly and heavily in western Oregon

Grating-tuned external cavity diode lasers

Fiber Bragg grating-tunable diode laser

Influence of adjustable speed drive on induction motor fault detection using stator current monitoring.

A dual-frequency diode laser displacement sensor

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