Localização de espécies florestais nativas em fragmentos da Floresta Ombrófila Mista no território centro-sul do Paraná.

EVINCI. Resumo

Elaboração de um mapa índice e um sistema de informação geográfica das espécies de interesse.

EVINCI. Resumo

Estudo da fenologia reprodutiva da guabiroba (Campomanesia Xanthocarpa Berg.) na floresta nacional de Irati.

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Fenologia reprodutiva de Maytenus ilicifolia (Celastraceae) na Floresta Nacional de Irati, Paraná, Brasil.

(Reproductive phenology of Maytenus ilicifolia (Celastraceae) in the Irati National Forest, Paraná, Brazil). The present study investigates the reproductive phenology of a natural population of Maytenus ilicifolia Mart. ex Reissek from the Mixed Ombrophylous Forest (Araucaria Forest). The phenological study was carried out from April 2003 to March 2005, on 78 adult trees. The intensity of phenological events was estimated based on the scale of Fournier. The population showed seasonal behavior. A significant correlation was observed between temperature, day length and flowering. Two floral types were identified, one pistillate and the other staminate, and together with the phenology patterns results a dioecious characteristic for the species is suggested

O uso e o potencial da pitanga (Eugenia uniflora L.).

EVINCI. Resumo

Kinks and waterfalls as signatures of competing order in angle-resolved photoemission spectra of La_{2-x}Sr_xCuO_4

We show that the so-called kinks and waterfalls observed in angle-resolved photoemission spectra of La2-xSrxCuO4, a prototypical high-Tc superconducting cuprate, result from the coupling of quasiparticles with two distinct nearly critical collective modes with finite characteristic wave vectors, typical of charge and spin fluctuations near a stripe instability. Both phonon-like charge and spin collective modes are needed to account for the kinked quasiparticle dispersions. This clarifies the long-standing question whether kinks are due to phonons or spin waves and the nature of the bosonic mediators of the electron-electron effective interaction in La2-xSrxCuO4.Comment: 5 pages, 4 figure