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Filtering by: Creator Giguere, Andrew Non-Academic Affiliation Oregon State University. Graduate School Resource Type Dissertation

An Examination of Factors Controlling the Activity of Ammonia- and Nitrite-oxidizers in Diverse Soils

Creator:

Giguere, Andrew T.

Abstract:

Nitrification is a critical step in the global nitrogen cycle involving the biological oxidation of ammonia (NH₃) to nitrite (NO₂⁻ ) and then to nitrate (NO₃⁻). The first step in nitrification is carried out by NH₃-oxidizing bacteria (AOB) and archaea (AOA), and the second by NO₂⁻-oxidizing bacteria (NOB). In addition...

Resource Type:

Dissertation

Full Text:

Andrew T. Giguere for the degree of Doctor of Philosophy in Soil Science presented on March 20, 2017
Cloning and characterization of GRASP, a novel retinoic acid-induced gene from P19 embryonal carcinoma cells

Creator:

Nevrivy, Daniel

Abstract:

Retinoic acid (RA) exerts important effects in the processes of vertebrate development, cellular growth and differentiation, and homeostasis. However, the mechanisms of action of RA in the control of cellular and developmental processes are incompletely understood, as the retinoid target genes have not been fully characterized. The goal of these...

Resource Type:

Dissertation

Full Text:

vitamin A for all its functions (Giguere 1994). Thus, RA is believed to act as the primary active