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Itens para a visualização no momento 181-190 of 190
Efeito da substituição parcial do cimento por adições minerais na resistência à corrosão de concretos por ácidos orgânicos
(2023-09-13)
The development of new research to improve the understanding of the mechanisms of degradation of cementitious matrices in aggressive environments, together with changes in the composition and properties of conventional ...
Pressure-induced second-order phase transition in fluorine
(2023-09-20)
The relative stability between the crystal structure of (alfa)-F2, space group C2/c, and a hypothesized highpressure phase, space group Cmce, was explored using Density Functional Theory at the PBE0+D3(ABC)/TZVP level of ...
Desenvolvimento de uma membrana verde à base de poli(vinil álcool) para a remoção de diclofenaco de sódio de matrizes aquosas
(2023-10-18)
Membrane separation processes are efficient to reduce water pollution by emerging contaminants, such as pharmaceuticals. In Brazil, as well as worldwide, the production of membranes still faces challenges concerning the ...
Avaliação da influência da mistura de elastômeros nas propriedades físico-químicas e mecânicas de formulações elastoméricas
(2023-11-07)
This study aimed to evaluate the influence of the mixture of different polymers such as natural rubber ((poly(cis-2-methyl-buta-1,4-diene)) (NR), styrene-butadiene copolymer (poly(buta 1,3-diene-co-styrene)) (SBR) and ...
Influência da temperatura de recozimento na conformabilidade da chapa trimetálica - 304L/A1/430 obtida por laminação a frio
(2023-12-29)
The industrial expansion has propelled the search for more efficient production processes and superior-quality materials capable of combining diverse properties. In this scenario, multilayer materials stand out, enabling ...
Efeito de extensores de cadeia e poliol de fonte renovável na estrutura e propriedades de poliuretanos termoplásticos obtidos por processamento reativo
(2024-01-25)
Thermoplastic polyurethanes (TPUs) are highly versatile polymers known for their wide range of properties, achieved through the strategic combination of raw materials, including isocyanates, polyols, and chain extenders. ...
Avaliação do desempenho de toliltriazol como inibidor de corrosão para o cobre em meio aquoso ácido
(2023-09-27)
Corrosion is a natural process that causes the degradation of metallic materials, resulting in significant economic losses in several industries. To mitigate this problem, inhibitors have been widely studied and used as a ...
Preparação e caracterização de filmes de látex de borracha natural contendo própolis vermelha e cobre para aplicações biomédicas
(2023-09-01)
Wound healing can be delayed due to resistance and tolerance to several topical antimicrobials that are often used for this purpose. In this context, the development of
dressings with materials that have angiogenic and ...
Desenvolvimento e processamento de látex de borracha natural com propriedades antibacterianas para produção de luvas cosméticas para próteses de membros superiores
(2024-04-19)
Upper limb amputations occur frequently throughout the world and are mainly caused by trauma, such as car accidents or accidents involving industrial machinery. The development of prosthetic technologies is a growing need ...