Avaliação de impacto em estudos sobre segurança de barragens: experiências de aplicação na estimativa do dano potencial associado

Resumo: Rupturas de barragens verificadas nas últimas décadas no País geraram impactos relevantes, motivando a edição da Política Nacional de Segurança de Barragens (Lei Federal 12.334/2010) e sua regulamentação, bem como a revisão contínua das normas em face de novos episódios posteriores, visando-se fomentar a prevenção e reduzir as consequências. Leia mais…

Influence of annealing-induced phase separation on the shape memory effect of graphene-based thermoplastic polyurethane nanocomposites

Abstract: Thermoplastic polyurethane (TPU) is a multiblock copolymer that exhibits an attractive shape memory effect (SME). Its morphology consists of a soft segment (SS), which corresponds to the polyol or a long-chain diol, while the hard segment involves the intercalation of a diisocyanate and a chain extender. Due to the Leia mais…

The modeling and simulation of waste recovery processes applied to the Orange juice industry

Abstract: Orange-juice production represents a significant, world-leading economic sector in Brazil. Orange processing residues, however, correspond to 50% to 60% of the in natura fruit mass. Despite the high amount of generated waste, which is disposed of in landfills or used as raw material to produce low-value animal feed, studies Leia mais…

Agarose fibers with glycerol and graphene oxide and functional properties for potential application in biomateirals

Abstract: Agarose has numerous applications in biochemistry and medical textiles. This study aimed to produce agarose graphene oxide-glycerol fibers and analyze their properties. The agarose gel was prepared by dissolving the polymer in 9:1 (v/v) dimethyl sulfoxide (DMSO): H2O, followed by spinning in an ethanol bath (1:1 (v/v) ethanol: H2O) Leia mais…

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