Zobrazeno 1 - 10 of 140 pro vyhledávání: '"J. A. Ballantine"'
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Akademický článek
Global trends in visibility: implications for dust sources
Autor: N. M. Mahowald, J. A. Ballantine, J. Feddema, N. Ramankutty
Publikováno v: Atmospheric Chemistry and Physics, Vol 7, Iss 12, Pp 3309-3339 (2007)
There is a large uncertainty in the relative roles of human land use, climate change and carbon dioxide fertilization in changing desert dust source strength over the past 100 years, and the overall sign of human impacts on dust is not known. We used
Externí odkaz: https://doaj.org/article/667cb1fc48fc49778214f57430aa9e22
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2
Global trends in visibility: implications for dust sources
Autor: J. A. Ballantine, Natalie M. Mahowald, Navin Ramankutty, Johannes J. Feddema
Publikováno v: Atmospheric Chemistry and Physics. 7:3309-3339
There is a large uncertainty in the relative roles of human land use, climate change and carbon dioxide fertilization in changing desert dust source strength over the past 100 years, and the overall sign of human impacts on dust is not known. We used
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b90f7be8c3f28dc905c43ac3998e2f37
https://doi.org/10.5194/acp-7-3309-2007
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5
The Best (?) Formula for Computing π to a Thousand Places
Autor: J. P. Ballantine
Publikováno v: Pi: A Source Book ISBN: 9781475732429
Pi: A Source Book ISBN: 9781475727388
Pi: A Source Book ISBN: 9781441919151
In the December 1938 issue of this Monthly, D. H. Lehmer gave a very comprehensive list of formulas for computing π. He rightly chose formulas (23) and (32) as the best self checking pair, with (18) a good substitute for (23).
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0384aadbf986bbcea1dcb366c4e9f469
https://doi.org/10.1007/978-1-4757-3240-5_31
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6
Biomonitoring study of a group of workers potentially exposed to traffic fumes
Autor: E M, Parry, J A, Ballantine, S, Ellard, W E, Evans, C, Jones, N, Kilic, R I, Lewis
Publikováno v: Environmental and molecular mutagenesis. 30(2)
Risk assessment of environmental pollutants is concerned with the identification of compounds in the environment that might be hazardous to human health: measuring exposure levels, measuring cellular damage and then estimating the probability of harm
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d0fc11403e20f8fa552155aaabae783d
https://pubmed.ncbi.nlm.nih.gov/9329636
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8
Organic reactions in a clay microenvironment
Autor: J. A. Ballantine, J. H. Purnell, John Meurig Thomas
Publikováno v: Clay Minerals. 18:347-356
Although natural Na-bentonite has little catalytic activity, various cation-exchanged bentonites have proved to be effective catalysts for a wide variety of organic reactions. In the presence of these catalysts alkenes can be induced to add (a) water
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::06fa3fa3e40be9dd758dd65c3f4b0cba
https://doi.org/10.1180/claymin.1983.018.4.02
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9
Eriolaena hookeriana seed oil: A rich source of malvalic acid
Autor: J. A. Ballantine, S. M. Osman, M. Ahmad, M. S. Ahmad
Publikováno v: Chemistry and Physics of Lipids. 25:29-38
The seed oil of Eriolaena hookeriana (Sterculiaceae) contains malvalic (25.8%) and sterculic (6.0%) acids in addition to normal fatty acids. Eriolaena hookeriana is the second known species of the Sterculiaceae plant family whose seed oil contains mo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c467845dc4ac6d6a68349ed5905ff3fc
https://doi.org/10.1016/0009-3084(79)90051-3
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