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An Analytical Solution for Horizontal Infiltration in Highly Selected Porous Media: Anchoring in Sorptivity and Van Genuchten-Mualem Parameter

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This is an updated version of a previously posted article that had been published on June 17, 2025 on this blog. Celso Luiz Prevedello Abstract This work proposes an analytical model specifically for highly selected porous media (n>10), using a continuous sigmoidal moisture profile to describe the transition zone during horizontal infiltration. The parameter n represents an adjustment factor of the van Genuchten (1980) model for the soil water retention curve, and is related to the uniformity of pore distribution. The parameter n>10 of van Genuchten suggests a very uniform pore distribution. The specialization for n>10 addresses the growing demand of modern engineering for synthetic and designed materials with very uniform pore distribution, widely used in industrial filtration, draining pavement, technical substrates and advanced geotechnical systems. The model was developed specifically for materials with characteristics similar to very well selected sands, such as the porou...
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  With Luggage and Hope: The Saga of 19th-Century Italian Immigrants in Rio Grande do Sul, Brazil Celso Luiz Prevedello In Rio Grande do Sul (southern Brazil), those who visit the cities of the Serra Gaúcha region, such as Bento Gonçalves, Garibaldi, Caxias do Sul, and others, encounter a unique landscape where historical architecture and modernity intertwine. Century-old mansions, some modest and others sumptuous, preserve the memory of the first immigrants and their descendants. Alongside contemporary buildings, these structures bear witness to diverse trajectories - ranging from families who maintained simple living conditions to those who achieved economic prosperity. In town squares and social clubs, where bocce is played and centuries-old traditions are upheld, "talian" - a variant that emerged from the fusion of various regional Italian dialects, predominantly Venetian, with contributions from Portuguese - still echoes among the elderly. The st...
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