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rCOSA is a software package interfaced to the R language. It implements statistical techniques for clustering objects on subsets of attributes in multivariate data. The main output of COSA is a dissimilarity matrix that one can subsequently analyze with a variety of proximity analysis methods. Our package extends the original COSA software (Friedman and Meulman, 2004) by adding functions for hierarchical...
Abstract. The production of ethylene by six mycorrhizal fungi of pine (Pinus sylvestris L.) grown in media with and without methionine at temperatures of 20C and 26C and at pH 4.0, 6.0 or 7.0 was studied. The fungi produced more ethylene at 26C than at 20C, and more ethylene in media containing methionine than in media without this precursor. The fungi studied synthesized the highest amounts of ethylene...
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