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Background. The copaiba oil is a common natural product used in cosmetic industry and as a nutraceutical product. However, lack of quality control and scarce knowledge about its antimicrobial activity is a point of concern. The proposal of this study was to investigate the physicochemical properties and the antimicrobial activity of five commercial brands of copaiba oil. Material and methods. Acidity...
We work out a detailed magnetoresistance, superconducting fluctuation and magnetic irreversibility study of an Y 0.95 Pr 0.05 Ba 2 Cu 3 O 7-δ single crystal and polycrystalline samples. Our data reveal, besides the usual magnetic irreversibility regimes related to the intergrain and intragrain flux dynamics, a whole set...
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