Zobrazeno 1 - 10 of 53 pro vyhledávání: '"David R. MacKenzie"'
2
Optimising Ion Production in Pulsed Refractory and Non-Refractory Cathodic Arcs
Autor: David R. Mackenzie, Marcela M.M. Bilek, Patrick R. C. Neumann
Publikováno v: Proceedings of the 12th Asia Pacific Physics Conference (APPC12).
Filtered cathodic vacuum arcs are used industrially in thin film and surface modification applications. Recent work has suggested their use as efficient thrusters for satellite orbit correction. Both of these applications would benefit from more effi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bfa649c12ac6ea5d1022d38be6275236
https://doi.org/10.7566/jpscp.1.015059
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4
The national biological impact assessment program∗
Autor: Jean A. Larson, David R. Mackenzie
Publikováno v: Toxicological & Environmental Chemistry. 28:115-120
The need to safely field test genetically modified organisms is a critical step in the sequence of research leading to the commercialization of biotechnology in agriculture. To address this need the United States Department of Agriculture has establi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9dc5aeb247280095b0faca24f9d9a6c5
https://doi.org/10.1080/02772249009357595
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5
Agricultural Biotechnology, Law, APHIS Regulation
Autor: David R. MacKenzie
Publikováno v: Encyclopedia of Ethical, Legal and Policy Issues in Biotechnology ISBN: 0471250597
Encyclopedia of Ethical, Legal and Policy Issues in Biotechnology
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d1548f7e501ade53e859de1556cd461
https://doi.org/10.1002/0471250597.mur051
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8
Crop losses due to plant pathogens
Autor: David R. MacKenzie, Paul S. Teng, W. W. Shane
Publikováno v: Critical Reviews in Plant Sciences. 2:21-47
Losses caused by plant pathogens have been and remain important constraints, worldwide, on efforts to increase crop production and productivity. With what appears to have been a decade of small improvements in the yield of major food and fiber crops,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc069ab34a82d1a69eeee15e63742f23
https://doi.org/10.1080/07352688409382187
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9
The influence of nutrient pollution levels upon element constitution and morphology of Elodea canadensis rich. in Michx
Autor: Marilyn W. Price, Franklin S. Adams, David R. MacKenzie, Herbert Cole
Publikováno v: Environmental Pollution (1970). 1:285-298
Samples of Elodea canadensis Rich. in Michx. were investigated to determine the relationship between nutrient pollution, element constitution, and variation in morphological expression. Systematic samplings from twenty-four stations in two Pennsylvan
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2135f412a21567d2a97535c5fe3bc18
https://doi.org/10.1016/0013-9327(71)90021-8
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