12,370 research outputs found

    A study of the generation of linear energy transfer spectra for space radiations

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    The conversion of particle-energy spectra into a linear energy transfer (LET) distribution is a guide in assessing biologically significant components. The mapping of LET to energy is triple valued and can be defined only on open subintervals. A well-defined numerical procedure is found to allow generation of LET spectra on the open subintervals that are integrable in spite of their singular nature

    Genetic Variation in Resistance of Scotch Pine to Zimmerman Pine Moth

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    (excerpt) Scotch pine (Pinus sylvestris L.), a forest tree introduced from Eurasia, is commonly planted for Christmas tree and timber use in northeastern United States. In this country it has numerous insect enemies. Among the most important are European pine shoot moth, Rhyacionia buoliana (Schiffermiieller); pine root collar weevil, Hylobius radicis Buchanan;,European pine sawfly, Neodiprion sertifer (Geoffroy); and eastern white-pine shoot borer, Eucosma gloriola Heinrich. Previous studies (Wright et al., 1967; Wright and Wilson, 1972; Steiner, 1974) have revealed large genetic differences in resistance to some of these pests. Another destructive pest is the Zimmerman pine moth, Dioryctria zimmermani (Grote). In 1968 this insect, native to the United States, was found attacking trees in a Scotch pine provenance test in southwestern Michigan. The attack rate was heavy and by 1973 it was obvious that some rams or varieties were attacked more heavily than others. This is a report on those differences

    Jonathan Edwards\u27 \u3ci\u3eA History of the Work of Redemption\u3c/i\u3e

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    As a historian of religion, I appreciate the opportunity to present this discussion of a very particular editing assignment I have lived with for some years. Needless to say, this experience has increased my respect for those whose primary profession is close editorial work on texts. As a consequence, I offer these brief comments with a vivid sense of being essentially a layman in the field of editing who has tried to come to terms with its demands. Let me summarize the very special issues present in this project, and then turn to indicate the elements of the solution that have emerged

    Things That Matter: Courage

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    From: John F. Wilson

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    Does Archaeology Prove the Bible?

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    Cost of handling checking accounts

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    A cost system which would allot to each depositor the amount of expenses entailed in handling his account would undoubtedly be of great assistance to bankers. It is the endeavor of the writer to outline, in the following paragraphs, a workable and economical scheme whereby such a result may be obtained

    From/To: John F. Wilson (Chalk\u27s reply filed first)

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