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The effects of homogenization treatments on the microstructure evolution, microhardness and electrical conductivity of two dilute Al-Sc-Zr-Er alloys with different Zr contents were investigated. In both as-cast alloy, Zr and Sc are respectively concentrated at the dendrite interiors and the interdendritic regions, and Er is segregated at the primary Al3Er phases within grain and discontinuous intergranular...
Numerous processes, past and present, have given rise to lateral and vertical variation in the soil and to its individual properties such as its salinity and electrical conductivity. The resulting patterns of variation are complex and appear to comprise both random and deterministic components. The latter dominates vertically as trends in most soil profiles, and in the situation we describe it is...
Rice farmers in China need accurate maps of soil salinity to make rational decisions for management. Modern sensors such as the Geonics EM38 conductivity meter, which records the apparent electrical conductivity, ECa, allied to geostatistics to convert sparse punctual measurements into digital maps can provide them.We have explored the combination in reclaimed land in the Hangzhou Gulf of the Yangtze...
Soil salinity is widespread in a variety of environments, and land managers need to map its severity and extent both laterally and vertically. In this research we explore the inversion of apparent electrical conductivity (EC a ) measured with an EM38 using a linear model and Tikhonov regularization to model electrical conductivity (σ) profiles in a saline paddy field in the Yangtze delta of...
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