Modelling and estimation of physical parameters in a sludge drying system.

In this paper is presented the study of a Sludge Drying System used to kill pathogenic organisms living in sludge. The system is modeled and the physical parameters thermal capacity, thermal resistance and thermal time constant are estimated using conventional estimation methods.

[Use of natural sources in the preparation of biologically active compounds. II: Anti-inflammatory agents]. / Utilização de sintons naturais na preparação de compostos biologicamente ativos. II: Anti-inflamatórios.

In order to improve the knowledge on the natural sources of Brazilian florae, a research program is in course for the preparation of different groups of compounds which could have biological activity using abundant Natural Products as starting materials. This paper deals with work and results in the synthesis of anti-inflammatory analogs.