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

Roteiro metodológico para conservação e uso sustentável da biodiversidade.

bitstream/CNPF-2009-09/42354/1/doc144.pdf1 CD-ROM

Sensitivity of nonlinear photoionization to resonance substructure in collective excitation

Collective behaviour is a characteristic feature in many-body systems, important for developments in fields such as magnetism, superconductivity, photonics and electronics. Recently, there has been increasing interest in the optically nonlinear response of collective excitations. Here we demonstrate how the nonlinear interaction of a many-body system with intense XUV radiation can be used as an effective probe for characterizing otherwise unresolved features of its collective response. Resonant photoionization of atomic xenon was chosen as a case study. The excellent agreement between experiment and theory strongly supports the prediction that two distinct poles underlie the giant dipole resonance. Our results pave the way towards a deeper understanding of collective behaviour in atoms, molecules and solid-state systems using nonlinear spectroscopic techniques enabled by modern short-wavelength light sources

Reação do solo e retenção de enxofre (SO24) em um Podzolico Vermelho Amarelo latossolico distrofico cultivado com milho.

O trabalho teve por objetivo a determinação do efeito da reação do solo e da precipitação na retenção do sulfato em profundidade em um Podzolico Vermelho Amarelo latossolico distrofico em Piracicaba (SP)

Efeitos da extração pela cultura do milho e de fertilizantes nitrogenados na acidificação de um Podzolico Vermelho Amarelo latossolico distrofico.

Este trabalho teve por objetivo a determinação dos níveis de influência de dois fertilizantes nitrogenados (sulfato e nitrato de amonio) no processo de acidificação do solo, sendo realizado um ensaio em solo de textura media, utilizando-se a cultura do milho, com cultivo previo de tremoço

Modeladores condicionantes da paisagem do entorno da Floresta Nacional de Irati.

Resumo

Topological Wilson-loop area law manifested using a superposition of loops

We introduce a new topological effect involving interference of two meson loops, manifesting a path-independent topological area dependence. The effect also draws a connection between quark confinement, Wilson-loops and topological interference effects. Although this is only a gedanken experiment in the context of particle physics, such an experiment may be realized and used as a tool to test confinement effects and phase transitions in quantum simulation of dynamic gauge theories.Comment: Superceding arXiv:1206.2021v1 [quant-ph