Oregon State University

About: Oregon State University is a education organization based out in Corvallis, Oregon, United States. It is known for research contribution in the topics: Population & Climate change. The organization has 28192 authors who have published 64044 publications receiving 2634108 citations. The organization is also known as: Oregon Agricultural College & OSU.

Culture of Family Commitment and Strategic Flexibility: The Moderating Effect of Stewardship:

Abstract: The ability of family firms to identify and respond to changes in their external environments can be a key source of competitive advantage leading to success and survival. Some research, however, has suggested family firms are conservative and often lack the ability to adapt to their changing competitive environments. Using data from 248 family firms, we found a family firm's culture of commitment to the business is positively associated with its strategic flexibility—the ability to pursue new opportunities and respond to threats in the competitive environment. Further, we found stewardship-oriented organizational culture positively moderated the family commitment-strategic flexibility relationship.

Absorption and attenuation of visible and near-infrared light in water: dependence on temperature and salinity

Abstract: We have measured the absorption coefficient of pure and salt water at 15 wavelengths in the visible and near-infrared regions of the spectrum using WETLabs nine-wavelength absorption and attenuation meters and a three-wavelength absorption meter. The water temperature was varied between 15 and 30 degrees C, and the salinity was varied between 0 and 38 PSU to study the effects of these parameters on the absorption coefficient of liquid water. In the near-infrared portion of the spectrum the absorption coefficient of water was confirmed to be highly dependent on temperature. In the visible region the temperature dependence was found to be less than 0.001 m-1 degrees C except for a small region around 610 nm. The same results were found for the temperature dependence of a saltwater solution. After accounting for index-of-refraction effects, the salinity dependence at visible wavelengths is negligible. Salinity does appear to be important in determining the absorption coefficient of water in the near-infrared region. At 715 nm, for example, the salinity dependence was -0.00027 m-1 /PSU. Field measurements support the temperature and salinity dependencies found in the laboratory both in the near infrared and at shorter wavelengths. To make estimates of the temperature dependence in wavelength regions for which we did not make measurements we used a series of Gaussian curves that were fit to the absorption spectrum in the visible region of the spectrum. The spectral dependence on temperature was then estimated based on multiplying the Gaussians by a fitting factor.

Selenocompounds in Plants and Animals and their Biological Significance

Abstract: There are several selenocompounds in tissues of plants and animals. Selenate is the major inorganic selenocompound found in both animal and plant tissues. Selenocysteine is the predominant selenoamino acid in tissues when inorganic selenium is given to animals. Selenomethionine is the major selenocompound found initially in animals given this selenoamino acid, but is converted with time afterwards to selenocysteine. Selenomethionine is the major selenocompound in cereal grains, grassland legumes and soybeans. Selenomethionine can also be the major selenocompound in selenium enriched yeast, but the amount can vary markedly depending upon the growth conditions. Se-methylselenocysteine is the major selenocompound in selenium enriched plants such as garlic, onions, broccoli florets and sprouts, and wild leeks.

Enzymatic reactions of ascorbate and glutathione that prevent peroxide damage in soybean root nodules

Abstract: The critical problem of oxygen toxicity for nitrogen-fixing organisms may be related to damage caused by oxygen radicals and peroxides An enzymatic mechanism is described for removal of peroxides in root nodules of soybean (Glycine max) The system utilizes ascorbate as an antioxidant and glutathione as a reductant to regenerate ascorbate The enzymes involved are ascorbate peroxidase (ascorbate:hydrogen-peroxide oxidoreductase, EC 11117), dehydroascorbate reductase (glutathione:dehydroascorbate oxidoreductase, EC 1851), and glutathione reductase (NADPH:oxidized-glutathione oxidoreductase, EC 1642) The reactions are essentially the same as those involving scavenging of H(2)O(2) in chloroplasts Glutathione peroxidase (glutathione:hydrogenperoxide oxidoreductase, EC 11119) was not detected During the course of early nodule development, ascorbate peroxidase and dehydroascorbate reductase activities and total glutathione contents of nodule extracts increased strikingly and were positively correlated with acetylene reduction rates and nodule hemoglobin contents The evidence indicates an important role of glutathione, ascorbate, ascorbate peroxidase, dehydroascorbate reductase, and glutathione reductase as components of a peroxide-scavenging mechanism in soybean root nodules