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23 results on '"Preston R"'

1. Overview and Initial Results of the Very Long Baseline Interferometry Space Observatory Programme

Author

Hirabayashi, H., Hirosawa, H., Kobayashi, H., Murata, Y., Edwards, P. G., Fomalont, E. B., Fujisawa, K., Ichikawa, T., Kii, T., Lovell, J. E. J., Moellenbrock, G. A., Okayasu, R., Inoue, M., Kawaguchi, N., Kameno, S., Shibata, K. M., Asaki, Y., Bushimata, T., Enome, S., Horiuchi, S., Miyaji, T., Umemoto, T., Migenes, V., Wajima, K., Nakajima, J., Morimoto, M., Ellis, J., Meier, D. L., Murphy, D. W., Preston, R. A., Smith, J. G., Tingay, S. J., Traub, D. L., Wietfeldt, R. D., Benson, J. M., Claussen, M. J., Flatters, C., Romney, J. D., Ulvestad, J. S., D'Addario, L. R., Langston, G. I., Minter, A. H., Carlson, B. R., Dewdney, P. E., Jauncey, D. L., Reynolds, J. E., Taylor, A. R., McCulloch, P. M., Cannon, W. H., Gurvits, L. I., Mioduszewski, A. J., Schilizzi, R. T., and Booth, R. S.

Published
1998

5. Overview of VEGA Venus Balloon in Situ Meteorological Measurements

Author

Sagdeev, R. Z., Linkin, V. M., Kerzhanovich, V. V., Lipatov, A. N., Shurupov, A. A., Blamont, J. E., Crisp, D., Ingersoll, A. P., Elson, L. S., Preston, R. A., Hildebrand, C. E., Ragent, B., Seiff, A., Young, R. E., Petit, G., Boloh, L., Armand, N. A., Bakitko, R. V., and Selivanov, A. S.

Published
1986

6. VEGA Balloon System and Instrumentation

Author

Kremnev, R. S., Linkin, V. M., Lipatov, A. N., Pichkadze, K. M., Shurupov, A. A., Terterashvili, A. V., Bakitko, R. V., Blamont, J. E., Malique, C., Ragent, B., Preston, R. A., Elson, L. S., and Crisp, D.

Published
1986

8. Expansion of SN 1993J

Author

Marcaide, J. M., Alberdi, A., Ros, E., Diamond, P., Shapiro, I. I., Guirado, J. C., Jones, D. L., Krichbaum, T. P., Mantovani, F., Preston, R. A., Rius, A., Schilizzi, R. T., Trigilio, C., Whitney, A. R., and Witzel, A.

Published
1995

11. Determination of Venus Winds by Ground-based Radio Tracking of the VEGA Balloons

Author

Preston, R. A., Hildebrand, C. E., Purcell, G. H., Ellis, J., Stelzried, C. T., Finley, S. G., Sagdeev, R. Z., Linkin, V. M., Kerzhanovich, V. V., Altunin, V. I., Kogan, L. R., Kostenko, V. I., Matveenko, L. I., Pogrebenko, S. V., Strukov, I. A., Akim, E. L., Armand, N. A., Bakitko, R. N., Vyshlov, A. S., Bogomolov, A. F., Selivanov, A. S., Ivanov, N. M., Tichonov, V. F., Blamont, J. E., Boloh, L., Laurans, G., Boischot, A., Biraud, F., Ortega-Molina, A., Rosolen, C., and Petit, G.

Published
1986

13. Very Long Baseline Interferometric Observations made with an Orbiting Radio Telescope

Author

Levy, G. S., Linfield, R. P., Ulvestad, J. S., Edwards, C. D., Jordan, J. F., Di Nardo, S. J., Christensen, C. S., Preston, R. A., Skjerve, L. J., Stavert, L. R., Burke, B. F., Whitney, A. R., Cappallo, R. J., Rogers, A. E. E., Blaney, K. B., Maher, M. J., Ottenhoff, C. H., Jauncey, D. L., Peters, W. L., Nishimura, T., Hayashi, T., Takano, T., Yamada, T., Hirabayashi, H., Morimoto, M., Inoue, M., Shiomi, T., Kawaguchi, N., and Kunimori, H.

Published
1986

16. Stilbestrol

Author

Preston, R. L. and Longgood, William

Published
1960

17. Data and Hypothesis

Author

Tanford, Charles, Gatlin, Lila L., Preston, R. L., and Hansen, Heinz

Published
1964

18. Reproductive Dominance of Pasture Trees in a Fragmented Tropical Forest Mosaic

Author

James L. Hamrick and Preston R. Aldrich

Subjects
education.field_of_study, Multidisciplinary, Ecology, Foraging, Population, Biodiversity, food and beverages, Selfing, Biology, Population ecology, biology.organism_classification, medicine.disease_cause, Population bottleneck, Pollen, medicine, Symphonia globulifera, education
Abstract

Tropical forest fragmentation threatens biodiversity, yet basic information on population responses for major groups such as plants is lacking. Hypervariable genetic markers were used to reconstruct a population-level pedigree in fragmented tropical forest for the tree Symphonia globulifera . Though seedlings occurred only in remnant forest, the pedigree showed that most seedlings had been produced by sequentially fewer adults in pasture, creating a genetic bottleneck. The pedigree also implicated shifts in the foraging of animals that disperse pollen and seed in a secondary constriction of the bottleneck. These results suggest that tropical conservation strategies should anticipate complex, cryptic responses to fragmentation.

Published
1998
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19. Love Canal

Author

Heath, C. W., Nadel, Marion R., Zack, Matthew M., Bender, Michael A., and Preston, R. Julian

Published
1983

21. Determination of Venus winds by ground-based radio tracking of the VEGA balloons

Author

Preston, R. A, Hildebrand, C. E, Purcell, G. H., Jr, Ellis, J, and Stelzried, C. T

Subjects
Lunar And Planetary Exploration
Abstract

A global array of 20 radio observatories was used to measure the three-dimensional position and velocity of the two meteorological balloons that were injected into the equatorial region of the Venus atmosphere near Venus midnight by the VEGA spacecraft on June 11 and 15, 1985. Initial analysis of only radial velocities indicates that each balloon was blown westward about 11,500 kilometers (8,000 kilometers on the night side) by zonal winds with a mean speed of about 70 meters per second. Excursions of the data from a model of constant zonal velocity were generally less than 3 meters per second; however, a much larger variation was evident near the end of the flight of the second balloon. Consistent systematic trends in the residuals for both balloons indicate the possibility of a solar-fixed atmospheric feature. Rapid variations in balloon velocity were often detected within a single transmission (330 seconds); however, they may represent not only atmospheric motions but also self-induced aerodynamic motions of the balloon.

Published
1938

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