2 documents found, page 1 of 1
Influence of heat treatments on toughness and sensitization of a Ti-alloyed sup...
Silva, G. F. da; Tavares, S. S. M.; Pardal, Juan Manuel; Silva, M. R.; Abreu, Hamilton Ferreira Gomes deSupermartensitic steels are a new class of martensitic stainless steels developed to obtain higher corrosion resistance and better toughness through the reduction of carbon content, and addition of Ni and Mo. They were developed to more critical applications or to improve the performance obtained with conventional grades AISI 410, 420, and 431. In this study, the influences of the tempering parameters on the mi...
Limonoids from Toona ciliata and speculations on their chemosystematic and ecol...
Pinheiro, Antônio L.; Vieira, Paulo C.; Agostinho, Sueli M.; Das, M. Fátima; Silva, G. F. da; Vilela, Evaldo F.; Fernandes, Joāo B.Evolution of limonoids in the Meliaceae appears to be consistent with the resistance of Melioideae against the shoot borer Hypsipyla. The limonoid chemistry of Toona, which has shown absence of attacks of H. grandella, is reminiscent of Melioidease. An investigation of T. ciliata, has led to the identification of two novel meliacin butenolides, 21-hydroxycedrelonelide and 23-hydroxycedrelonelide, two known limo...