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Documentos en la biblioteca con la clasificación S (764)
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In this study the efficiency of bee traps used to evaluate mortality in a bee colony and their influence on undertaking behaviour was tested in twelve colonies of Apis mellifera L. Four types of bee traps (Original-Gary-Trap, a Modified-Gary-Tra[...]texto impreso
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A hydroxamic acid (artobactin) is excreted by cultures of Aerobacter aerogenes 62-I and related strains when growing in an iron-deficient medium. Aerobactin has been isolated and characterized as a dihydroxamic acid consisting of a conjugate of [...]texto impreso
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Istituto Sperimentale Lattiero-Caseario di Lodi (N° 266)texto impreso
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A method has been developed which provides a simple, rapid and accurate spectrophotometric estimation of the vitamin A content in fortified whole milk powder products. Results show at least the same accuracy as those obtained using the more soph[...]