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Articles 6301 - 6330 of 7340
Full-Text Articles in Physical Sciences and Mathematics
Nitrogen Retention In Cool Desert Soils, J. J. Skujins
Nitrogen Retention In Cool Desert Soils, J. J. Skujins
Memorandum
No abstract provided.
Nitrogen Dynamics In Stands Dominated By Some Major Cool Desert Shrubs. V. Studies On Denitrification And Nitrogen Fixation: Comparison Of Biological Process In Western Deserts, J. J. Skujins
Memorandum
No abstract provided.
Seasonal Use Of Soil Moisture By Larrea Tridentata And Ambrosia Deltoidea, D. R. Cable
Seasonal Use Of Soil Moisture By Larrea Tridentata And Ambrosia Deltoidea, D. R. Cable
Memorandum
No abstract provided.
Measurement Of Evapotranspiration With A Monolith Lysimeter, D. W. Young, D. D. Evans, T. W. Sammis, C. Constant
Measurement Of Evapotranspiration With A Monolith Lysimeter, D. W. Young, D. D. Evans, T. W. Sammis, C. Constant
Memorandum
No abstract provided.
Gas Exchange And Productivity Of Sonoran Desert Shrubs, S. R. Szarek, R. M. Woodhouse
Gas Exchange And Productivity Of Sonoran Desert Shrubs, S. R. Szarek, R. M. Woodhouse
Memorandum
No abstract provided.
Plant Productivity And Nutrient Inter-Relationships Of Perennials In The Mohave Desert, A.T. Vollmer, A. Wallace, J.W. Cha, T. Hartsock
Plant Productivity And Nutrient Inter-Relationships Of Perennials In The Mohave Desert, A.T. Vollmer, A. Wallace, J.W. Cha, T. Hartsock
Memorandum
No abstract provided.
Measurements Of Carbon And Nitrogen Changes In A Desert Soil, E. E. Staffeldt, K. B. Vogt
Measurements Of Carbon And Nitrogen Changes In A Desert Soil, E. E. Staffeldt, K. B. Vogt
Memorandum
No abstract provided.
Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson
Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson
Memorandum
No abstract provided.
Programming Phase Of Water Response Ecosystem Model: V. Annual Plant Submodel, B. J. Gilbert
Programming Phase Of Water Response Ecosystem Model: V. Annual Plant Submodel, B. J. Gilbert
Memorandum
No abstract provided.
Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks
Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks
Memorandum
No abstract provided.
Nitrogen And Phosphorus Constraints On Primary Production In The Great Basin Desert, J. J. Jurinak, D. W. James, A. Van Luik
Nitrogen And Phosphorus Constraints On Primary Production In The Great Basin Desert, J. J. Jurinak, D. W. James, A. Van Luik
Memorandum
No abstract provided.
Abundance And Distribution Of Soil Microarthropods In Rock Valley, Nevada, E. B. Edney, P. J. Franco, J. F. Mcbrayer
Abundance And Distribution Of Soil Microarthropods In Rock Valley, Nevada, E. B. Edney, P. J. Franco, J. F. Mcbrayer
Memorandum
No abstract provided.
Nitrogen Transformations In Rock Valley And Adjacent Areas Of The Mohave Desert, R. B. Hunter, A. Wallace, E. M. Romney
Nitrogen Transformations In Rock Valley And Adjacent Areas Of The Mohave Desert, R. B. Hunter, A. Wallace, E. M. Romney
Memorandum
No abstract provided.
A Characterization Of The Einstein Tensor In Terms Of Spinors, Ian M. Anderson, D. Lovelock
A Characterization Of The Einstein Tensor In Terms Of Spinors, Ian M. Anderson, D. Lovelock
Mathematics and Statistics Faculty Publications
All tensors of contravariant rank two which are divergence‐free on one index, concomitants of a spinor field σiAX′ together with its first two partial derivatives, and scalars under spin transformations are constructed. The Einstein and metric tensors are the only candidates.
Radar Observations Of Two Dimensional Turbulence In The Equatorial Electrojet, 2, Bela G. Fejer, D. T. Farley, B. B. Balsley, R. F. Woodman
Radar Observations Of Two Dimensional Turbulence In The Equatorial Electrojet, 2, Bela G. Fejer, D. T. Farley, B. B. Balsley, R. F. Woodman
Bela G. Fejer
Observations with an altitude resolution of about 1 km were made with the large, vertically directed 50-MHz radar system at the Jicamarca Radar Observatory during the day, when the electrojet was strong. Type 1 (‘two stream’) echoes were seen in a limited range of altitudes, with Doppler shifts corresponding to upward and downward motion at the acoustic velocity. Most of the radar returns were due to type 2 echoes, however. The direction of motion of the type 1 waves sometimes reversed in as little as 1 s, supporting a turbulent model of the electrojet region. During the day the upgoing …
Radar Measurements Of Neutral Winds And Temperatures In The Equatorial E Region, B. B. Balsley, Bela G. Fejer, D. T. Farley, R. F. Woodman
Radar Measurements Of Neutral Winds And Temperatures In The Equatorial E Region, B. B. Balsley, Bela G. Fejer, D. T. Farley, R. F. Woodman
Bela G. Fejer
The phase velocity of type 1 irregularities in the equatorial electrojet, which can be easily measured by radar, depends upon both the ion acoustic velocity (and hence the temperature) in the medium and the neutral wind velocity. By measuring the phase velocity at several zenith angles both of these quantities in principle can be determined. This note describes the technique and its limitations and presents a few preliminary results obtained at 50 MHz at the Jicamarca Radar Observatory in Peru. These results show E region east-west wind velocities as large as 100 m/s, temperature variations of greater than 100°K, and …
Radar Studies Of Anomalousvelocity Reversals In The Equatorial Ionosphere, Bela G. Fejer, D. T. Farley, B. B. Balsley, R. F. Woodman
Radar Studies Of Anomalousvelocity Reversals In The Equatorial Ionosphere, Bela G. Fejer, D. T. Farley, B. B. Balsley, R. F. Woodman
Bela G. Fejer
Radar observations made at Jicamarca show that the equatorial electrojet current and the E and F region electric fields can reverse from their normal direction during the day or night and during magnetically quiet or disturbed conditions. The nighttime reversals can only be detected by such radar measurements. The observations support most of the current hypotheses concerning the electrojet plasma instabilities. The rapid reversals sometimes seen during disturbed conditions indicate that high-latitude currents and electric fields associated with substorm activity strongly perturb the dynamo current system at all latitudes.
Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor
Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor
Memorandum
No abstract provided.
Plant Productivity And Nutrient Interrelationships Of Perennials In The Mohave Desert, A. T. Vollmer, A. Wallace, J. W. Cha, T. Hartsock
Plant Productivity And Nutrient Interrelationships Of Perennials In The Mohave Desert, A. T. Vollmer, A. Wallace, J. W. Cha, T. Hartsock
Memorandum
No abstract provided.
Primary Production And Carbon Allocation In Creosotebush: The Effect Of Leaf Age On Net Gas Exchange Capacity, J.P. Syvertsen, G.L. Cunningham
Primary Production And Carbon Allocation In Creosotebush: The Effect Of Leaf Age On Net Gas Exchange Capacity, J.P. Syvertsen, G.L. Cunningham
Memorandum
No abstract provided.
Plant Demographic Studies Of Desert Annual Communities In Northern Utah Dominated By Non-Native Weedy Species, D.R. Duba, B.E. Norton
Plant Demographic Studies Of Desert Annual Communities In Northern Utah Dominated By Non-Native Weedy Species, D.R. Duba, B.E. Norton
Memorandum
No abstract provided.
Distribution Of Microorganisms In Desert Soil, A. T. Vollmer, F. Au, S. A. Samberg
Distribution Of Microorganisms In Desert Soil, A. T. Vollmer, F. Au, S. A. Samberg
Progress reports
No abstract provided.
Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor
Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor
Progress reports
No abstract provided.
Measurements Of Carbon And Nitrogen Changes In A Desert Soil, E. E. Staffeldt, K. B. Vogt
Measurements Of Carbon And Nitrogen Changes In A Desert Soil, E. E. Staffeldt, K. B. Vogt
Progress reports
No abstract provided.
Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks
Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks
Progress reports
No abstract provided.
Programming Phase Of Water Response Ecosystem Model: Ii. Abiotic Submodels, P. W. Lommen, K. A. Marshall
Programming Phase Of Water Response Ecosystem Model: Ii. Abiotic Submodels, P. W. Lommen, K. A. Marshall
Progress reports
No abstract provided.
Gas Exchange, Translocation, Root Growth And Soil Respiration Of Great Basin Plants, M.M. Caldwell, L.B. Camp, R.S. Holthausen, H. Nueber
Gas Exchange, Translocation, Root Growth And Soil Respiration Of Great Basin Plants, M.M. Caldwell, L.B. Camp, R.S. Holthausen, H. Nueber
Progress reports
No abstract provided.
Nitrogen Retention In Cool Desert Soils, J. J. Skujins
Nitrogen Retention In Cool Desert Soils, J. J. Skujins
Progress reports
No abstract provided.
Programming Phase Of Water Response Ecosystem Model: I. Introduction And Support Programs, P. W. Lommen
Programming Phase Of Water Response Ecosystem Model: I. Introduction And Support Programs, P. W. Lommen
Progress reports
No abstract provided.
Programming Phase Of Water Response Ecosystem Model Iii. Animal Submodel, J. E. Heasley
Programming Phase Of Water Response Ecosystem Model Iii. Animal Submodel, J. E. Heasley
Progress reports
No abstract provided.