Homopolymers yield values of the unperturbed dimensions which are independent of the nature of solvent and which hardly depend upon temperature. Using the same method for [η] measurements in different solvents, the values obtained for random copolymers PS–PMMA are quite different from the “ideal...
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znsoil layersmobilidade no soloorganic fertilizationmacronutrientsmacronutrientesSwine manure is a good nutrient source, but may have a negative impact on the environment when inadequately used. The aim of this work was to evaluate changes in properties of soils under no-till grain production and ...