Variations in the Monoterpene Composition of Ponderosa Pine Wood Oleoresin (Classic Reprint)

Variations in the Monoterpene Composition of Ponderosa Pine Wood Oleoresin (Classic Reprint)

Author: Richard H. Smith

Publisher: Forgotten Books

Published: 2018-01-15

Total Pages: 364

ISBN-13: 9780483138933

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Excerpt from Variations in the Monoterpene Composition of Ponderosa Pine Wood Oleoresin The first card would be blank in the first 7 fields (70 columns) with rate A punched in the last, eighth field (cols. 71 The follow ing three cards, representing codes 9 16, 17 24, and 25 32, respectively, would be blank. The first field (cols. L 10) of the fourth (and last) would be punched with rate B. If the rate per acre option is not used, insert one blank card. Processing cost. Ibm 1620 and 7090 Computer processing times are not precisely comparable. For the ibm 1620 used, which had a gok memory and automatic floating point hardware, data processing includes card input and output. For the larger computer used, the ibm 7090 at the Computer Center, University of California, Berkeley, off line input and output time is not included in total processing time. Time estimates are presented for specific operations on the ibm 1620. For the faster ibm 7090, much grosser time estimates suffice. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


Xylem Monoterpenes of Some Hard Pines of Western North America

Xylem Monoterpenes of Some Hard Pines of Western North America

Author: Richard Harrison Smith

Publisher:

Published: 1982

Total Pages: 12

ISBN-13:

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Monoterpene composition was studied in a number of hard pine species and results were compared with earlier work. (I) Intratree measurements showed strong constancy of composition in both single-stemmed and forked trees of ponderosa, Jeffrey, Coulter, and Jeffrey x ponderosa pines. In grafts of these and other pines, the scion influenced the root stock, but not the reverse. (2) Large intcrtree variation in composition was found in a small sample of seven hard pines native to Mexico; the value of monoterpenes in clarifying taxonomy of these pines remains uncertain. (3) An 80-tree plot of ponderosa is adequate to determine average monoterpene composition. For the best estimate of the kinds and abundance of types of composition, a 350-tree plot is needed. Short-column chromatographic analysis is acceptably accurate for rapid classification of a large number of samples.