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New insight into the discrimination between omeprazole enantiomers by cyclodext...
Figueiras, A.; Sarraguça, J. M. G.; Pais, A. A. C. C.; Veiga, J. F.; Carvalho, R. A.We report results regarding the use of 1H-NMR spectroscopy in the study of the conformational behaviour and optical activity of omeprazole. Changes in the chemical shifts of chosen atoms reveal that the conformational behaviour of omeprazole is temperature and pH sensitive. Separation and identification of omeprazole enantiomers in the presence of natural and derivative cyclodextrins, such as ß-cyclodextrin (ßC...
Daily rhythm of aggregation in the haematophagous bug Triatoma infestans (Heter...
Minoli,S A; Baraballe,S; Lorenzo Figueiras,A NTriatomine bugs show a temporal modulation of many activities. Here, we analyse the daily modulation of the aggregation behaviour of Triatoma infestans larvae and its chronobiological basis. In the laboratory, groups of six bugs were released over an experimental arena during six consecutive days, where their aggregation behaviour was quantified every hour. When submitted to a 12/12 h photoperiod (L/D), the lar...
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