This study describes the optimization and validation of a quick and simple method for the simultaneous determination of total content and available fractions of As, Cr, Cu, Ni, Pb and Tl in sediments ...

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How to solve simultaneous equations using graphs. How much is each ticket? Draw a bar to represent one adult and two children’s tickets. Let’s call the adult ticket 𝑦 and the child ticket 𝑥. Another ...

ABSTRACT: A modified dilution method designed to simultaneously estimate bacterial mortality due to viral infection and protozoan grazing was developed and compared with the standard dilution protocol ...