Cláudio de Souza

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The interactions of adenine and thymine with and adsorption on zeolites were studied using different techniques. There were two main findings. First, as shown by X-ray diffractometry, thymine increased the decomposition of the zeolites (Y, ZSM-5) while adenine prevented it. Second, zeolite Y adsorbed almost the same amount of adenine and thymine, thus both(More)
The inhibitory effects of the ethyl acetate extract and capsaicin (1) and dihydrocapsaicin (2) isolated from fruits of Capsicum annuum chili pepper type, and synthetic capsaicinoid derivatives (N-(4-hydroxyphenylethyl)decamide (3), (E)-N-(4-hydroxy-3-methoxybenzyl)-3,7-dimethylocta-2,6-dienamide (4),(More)
Due to the economic importance of wood production, species including Cedrela fissilis Vell. and Cariniana legalis (Mart.) Kuntze have been heavily exploited and are currently threatened with extinction. In addition, these species produce seeds with low viability when stored for long periods. In this work, the effect of storage time on seedling emergence and(More)
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