Index Catalog // ScholarsArchive@OSU

Effects of clay-water interactions on water retention in porous media

Creator:: Lenhard, Robert J. (Robert James)
Abstract:: Capillary pressure-saturation data obtained for unconsolidated porous media with different liquids are examined to investigate the effects of clay-liquid interactions on liquid retention. Liquid retention functions are assumed to reflect the effective pore-size distributions. The hydraulic variables, capillary pressure and saturation, are transformed to account for changes in liquid retention...
Resource Type:: Dissertation
Full Text:: Porous Media AN ABSTRACT OF THE THESIS OF Robert J. Lenhard for the degree of Doctor of Philosophy in

Small-Scale Sea Surface Temperature Structure

Creator:: Simpson, James J. and Paulson, Clayton A.
Abstract:: Observations of sea surface temperature and wave height were made from a large, manned spar buoy (R/P FLIP) ~100 km off the coast of Baja California. Surface temperature was measured with a radiation thermometer which viewed a disc on the surface 12 cm in diameter. The instrument responded to frequencies...
Resource Type:: Article

Methylammonium uptake by Chesapeake Bay phytoplankton: Evaluation of the use of the ammonium analogue for field uptake measurements

Creator:: Wheeler, Patricia A. and McCarthy, James J.
Abstract:: The uptake of methylammonium (MA) by Chesapeake Bay phytoplankton was measured in short term experiments by using the 14C radioisotope. This uptake was inversely related to ambient NH4+ concentrations, and the specificity for uptake of both substrates was demonstrated by competitive inhibition. At stations with low ambient NH4+, MA uptake...
Resource Type:: Article
Full Text:: WHEELER, PATRICIA A., AND JAMES J. MCCARTHY. Methylammonium

Interrelationships between optical parameters, biological parameters and particle size distributions in Monterey Bay

Creator:: Kitchen, James C. and Zaneveld, J. Ronald
Abstract:: Spectral beam attenuation coefficients, spectral volume scattering function meaurements at 45°, 90°, and 130° particle size distributions and chlorophyll a and phaeophytin pigment concentrations were measured during May and September, 1977 in Monterey Bay, California. This data is examined and statistical interrelationships between the parameters measured are explored. It was...
Resource Type:: Technical Report
Full Text:: . Kitchen and J. Ronald V. Vaneveld National Aeronautics and Space Administration Contract NASS-23738

Fungal colonization of styroblock containers Plum Creek Nursery, Pablo, Montana

Creator:: James, Robert L. and Gilligan, Carma J.
Abstract:: An evaluation of the efficacy of steam treatment on reducing levels of Fusarium, Cylindrocarpon, and Trichoderma within styroblock containers was conducted at the Plum Creek Nursery in Pablo, Montana. Although levels, of both Fusarium and Cylindrocarpon were significantly reduced by cleaning, relatively high populations of both these fungi persisted after...
Resource Type:: Technical Report
Full Text:: Pathologist and C. J. Gilligan, Biological Technician ABSTRACT An evaluation of the efficacy of steam

Mixing and Intrusions in a Rotating Cold-Core Feature off Cape Blanco, Oregon

Creator:: Moum, James N., Caldwell, Douglas R., and Stabeno, Phyllis J.
Abstract:: During August 1986, a large cold anomaly was observed in satellite and in situ measurements near Cape Blanco at 42°N, 126°30′W off the Pacific Coast. Detailed vertical profiles of temperature, conductivity, turbulent dissipation, and horizontal currents showed 1) surface water temperature changes as large as 2 degrees in 1 kilometer...
Resource Type:: Article

The influence of optical water type on the heating rate of a constant depth mixed layer

Creator:: Zaneveld, J. Ronald, Kitchen, James C., and Pak, Hasong
Abstract:: A simple heat budget model for a radiation-dominated mixed layer of constant depth is presented. In this model the influence of the vertical irradiance (heat flux) profile is examined by means of the Jerlov [1976] optical water type classification. It is shown that the vertical irradiance profile is important in...
Resource Type:: Article
Full Text:: , 1981 The Influence of Optical Water Type on the Heating Rate of a Constant Depth Mixed Layer J

A study of the optical characteristics of the suspended particles in the benthic nepheloid layer of the Scotian Rise

Creator:: Spinrad, Richard W., Zaneveld, J. Ronald, and Kitchen, James C.
Abstract:: Light transmission profiles have been used to study the optical properties of the suspended particles which are characteristic of the area of the Scotian Rise in the North Atlantic Ocean. This area is typified by very strong bottom currents and a highly variable bedform morphology. A good correlation (r =...
Resource Type:: Article
Full Text:: Ocean Sciences J. RONALD V. ZANEVELD AND JAMES C. KITCHEN School of Oceanography, Oregon State

Ammonium uptake and incorporation by Chesapeake Bay phytoplankton: Short term uptake kinetics

Creator:: Wheeler, Patricia A., Glibert, Patricia M., and McCarthy, James J.
Abstract:: Using 15N-labeled NH4+, we assessed the time-course of NH4+ uptake, the parameters of saturation kinetics, and the rates of incorporation of NH4+ into trichloroacetic acid-insoluble material by Chesapeake Bay phytoplankton. The amount of NH4+ taken up by the phytoplankton increased linearly with time for 2 h for all samples growing...
Resource Type:: Article
Full Text:: WHEELER, PATRICIA A., PATRICIA M. GLIBERT, AND JAMES J. MCCARTHY

Controlling sapstain : trials of product group I on selected western softwoods

Creator:: Miller, Donald J. (Donald James), Morrell, Jeffrey J., and Oregon State University. Forest Research Laboratory
Abstract:: Environmental restrictions have induced many sawmills to seek alternatives to pentachlorophenol (penta) or similar chlorinated phenols to control fungal sapstains on green lumber. Five alternative preventives were evaluated against a traditional penta product (Permatox 101) on Douglas-fir, hem-fir, and pine lumber in an accelerated 6-week test on small specimens in...
Resource Type:: Technical Report
Full Text:: : Trials of Product Group I on Selected Western Softwoods Donald J. Miller Jeffrey J. Morrell lii FORUF

ScholarsArchive@OSU

Effects of clay-water interactions on water retention in porous media

Small-Scale Sea Surface Temperature Structure

Methylammonium uptake by Chesapeake Bay phytoplankton: Evaluation of the use of the ammonium analogue for field uptake measurements

Interrelationships between optical parameters, biological parameters and particle size distributions in Monterey Bay

Fungal colonization of styroblock containers Plum Creek Nursery, Pablo, Montana

Mixing and Intrusions in a Rotating Cold-Core Feature off Cape Blanco, Oregon

The influence of optical water type on the heating rate of a constant depth mixed layer

A study of the optical characteristics of the suspended particles in the benthic nepheloid layer of the Scotian Rise

Ammonium uptake and incorporation by Chesapeake Bay phytoplankton: Short term uptake kinetics

Controlling sapstain : trials of product group I on selected western softwoods

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