Although oceanographers such as Roger Revelle are typically associated with key indicators
of anthropogenic change, he and other scientists at midcentury had very different
scientific priorities and ways of seeing the oceans. How can we join the narrative of the
triumph of mathematical, dynamic oceanography with the environmental narrative? Dynamic...
Nitrosomonas sp. strain AL212 is an obligate chemolithotrophic ammonia-oxidizing bacterium (AOB) that was originally isolated in 1997 by Yuichi Suwa and colleagues. This organism belongs to Nitrosomonas cluster 6A, which is characterized by sensitivity to high ammonia concentrations, higher substrate affinity (lower K[subscript m]), and lower maximum growth rates than...
To provide sufficient food and fiber to the increasing global population, the technologies associated with crop protection are growing ever more sophisticated but, at the same time, societal expectations for the safe use of crop protection chemistry tools are also increasing. The goal of this perspective is to highlight the...
A new model of long-period tidal variations in length of day is developed. The model
comprises 80 spectral lines with periods between 18.6 years and 4.7 days, and it consistently includes effects
of mantle anelasticity and dynamic ocean tides for all lines. The anelastic properties follow Wahr and Bergen;
experimental...
Nitrosomonas sp. Is79 is a chemolithoautotrophic ammonia-oxidizing bacterium that belongs to the family Nitrosomonadaceae within the phylum Proteobacteria. Ammonia oxidation is the first step of nitrification, an important process in the global nitrogen cycle ultimately resulting in the production of nitrate. Nitrosomonas sp. Is79 is an ammonia oxidizer of high...
Marine microbes exhibit highly varied, often non-spherical shapes that have functional significance for essential processes, including nutrient acquisition and sinking rates. There is a surprising absence of data, however, on how cell shape affects grazing, which is crucial for predicting the fate of oceanic carbon. We used synthetic spherical and...
Over the past decade, regional ocean observing systems have been established along nearly the entirety of the U.S. coastlines, forming a major component of the national Integrated Ocean Observing System (100S). Observations from these systems provide information to support decision making by governmental agencies and commercial enterprises, such as shipping...
Published July 1988. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Abstract: Several models for two-phase flow in porous media identify trapping and connectivity of fluids as an important contribution to macroscale hysteresis. This is especially true for hysteresis in relative permeabilities. The trapping models propose trajectories from the initial saturation to the end saturation in various ways and are often...