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Parametric manifolds

Creator:: Boersma, Stuart F.
Abstract:: A standard tool in general relativity is the 3+1 or ADM point of view, namely slicing spacetime into spacelike hypersurfaces of constant time and then describing physics in terms of time-dependent quantities on a typical such hypersurface. Much less well-known is the 1+3 point of view, in which one foliates...
Resource Type:: Dissertation

Parametric manifolds. II. Intrinsic approach

Creator:: Boersma, Stuart and Dray, Tevian
Abstract:: A parametric manifold is a manifold on which all tensor fields depend on an additional parameter, such as time, together with a parametric structure, namely a given (parametric) one‐form field. Such a manifold admits natural generalizations of Lie differentiation, exterior differentiation, and covariant differentiation, all based on a nonstandard action...
Resource Type:: Article
Full Text:: Parametric manifolds. II. Intrinsic approach Stuart Boersmaa

Parametric manifolds. I. Extrinsic approach

Creator:: Boersma, Stuart and Dray, Tevian
Abstract:: A parametric manifold can be viewed as the manifold of orbits of a (regular) foliation of a manifold by means of a family of curves. If the foliation is hypersurface orthogonal, the parametric manifold is equivalent to the one‐parameter family of hypersurfaces orthogonal to the curves, each of which inherits...
Resource Type:: Article
Full Text:: Parametric manifolds. I. Extrinsic approach Stuart Boersmaa) and

Economic analysis of water, nitrogen and seeding rate relationships in corn production on Woodburn soils

Creator:: Miller, Stanley F. and Boersma, L.
Abstract:: Published December 1966. 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
Resource Type:: Technical Report
Full Text:: Rate Relationships in Corn Production on Woodburn Soils STANLEY F. MILLER AND LARRY L. BOERSMA

Model for uptake of organic chemicals by plants

Creator:: Boersma, L., Lindstrom, F. T., and McFarlane, Craig, 1936-
Abstract:: Uptake, in-plant transport, and local accumulation of organic chemicals by plants are influenced by plant characteristics, properties of the chemical and the soil, and by environmental conditions. Evaluations of plant contamination required by regulatory agencies cannot be made experimentally for the many thousands of xenobiotic chemicals in existence or being...
Resource Type:: Technical Report
Full Text:: reg on sta te. ed u/c ata log MODEL FOR UPTAKE OF ORGANIC CHEMICALS BY PLANTS L. BOERSMA, F. T

Irrigation water values in the Willamette Valley : a study of alternative valuation methods

Creator:: Miller, Stanley F., Boersma, L., and Castle, Emery N.
Abstract:: Published September 1965. 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
Resource Type:: Technical Report
Full Text:: Water Values in the Willamette Valley: A Study of Alternative Valuation Methods AUTHORS: Stanley F

CTSPAC : mathematical model for coupled transport of water, solutes, and heat in the soil-plant-atmosphere continuum : v. 1. Mathematical theory and transport concepts.

Creator:: Oregon State University. Agricultural Experiment Station, Lindstrom, F. T., Boersma, L., and Yingjajaval, Suntaree
Abstract:: CTSPAC is a mathematical model for coupled transport of water, solutes, and thermal energy in the soil-plant-atmosphere continuum. The mathematical structure consists of coupling a model for transport through soil (soil submodel) to one for xylem and phloem transport (plant submodel). The modeling approach is based on discrete space conceptualization...
Resource Type:: Technical Report
Full Text:: Concepts F. T. Lindstrom L. Boersma S. Yingjajaval 1 This is one of two volumes describing a

User's guide to CTSPAC : mathematical model for coupled transport of water, solutes, and heat in the soil-plant-atmosphere continuum

Creator:: Cawlfield, David E., Lindstrom, F. T., Boersma, L., and Oregon State University. Agricultural Experiment Station
Abstract:: Published July 1990. 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
Resource Type:: Technical Report
Full Text:: , AND HEAT IN THE SOIL-PLANT-ATMOSPHERE CONTINUUM D. E. CAWLFIELD, F. T. LINDSTROM, L. BOERSMA User's

UTAB : mathematical model for the uptake, transport, and accumulation of inorganic and organic chemicals by plants

Creator:: Cawlfield, David E., Boersma, L., Lindstrom, F. T., and Oregon State University. Agricultural Experiment Station
Abstract:: Published April 1991. 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
Resource Type:: Technical Report
Full Text:: (AREA) that are missing or contain zero values. 31 LITERATURE CITED Boersma, L., F. T. Lindstrom

Uptake, transport, and accumulation of chemicals by plants (UTAB 4.6)

Creator:: Cawlfield, David E., Lindstrom, F. T., Boersma, L., and Oregon State University. Agricultural Experiment Station
Abstract:: Published July 1990. 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
Resource Type:: Technical Report

ScholarsArchive@OSU

Parametric manifolds

Parametric manifolds. II. Intrinsic approach

Parametric manifolds. I. Extrinsic approach

Economic analysis of water, nitrogen and seeding rate relationships in corn production on Woodburn soils

Model for uptake of organic chemicals by plants

Irrigation water values in the Willamette Valley : a study of alternative valuation methods

CTSPAC : mathematical model for coupled transport of water, solutes, and heat in the soil-plant-atmosphere continuum : v. 1. Mathematical theory and transport concepts.

User's guide to CTSPAC : mathematical model for coupled transport of water, solutes, and heat in the soil-plant-atmosphere continuum

UTAB : mathematical model for the uptake, transport, and accumulation of inorganic and organic chemicals by plants

Uptake, transport, and accumulation of chemicals by plants (UTAB 4.6)

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