Ingaas/inp Quantum Wells With Thickness Modulation

We investigated the optical properties of lattice-matched InGaAs/InP quantum wells grown by metalorganic molecular beam epitaxy on top of patterned InP buffer layers with elongated features along the [01̄1] direction. The resulting quantum wells present a periodic thickness variation following the elongated features. Low temperature luminescence measurements exhibit double emission bands, attributed to distinct regions of the well. Temperature evolution of the photoluminescence spectra gives qualitative information about the effect of exciton localization.65785785

Efeitos de diferentes níveis de N P K sobre o peso da matéria seca, na produção de mudas por via seminífera, do hedíquio amarelo, Hedychium gardnerianum sheppard ex ker-gawl, zingiberaceae

A study was made of the effect of different levels of N P K: N = 0,200, 400; P = 0,400, 800 and K = 0,200, 400 kg/ha, under field conditions, on the seedling production of ginger-lily, Hedyohium gardnerianum Sheppard ex Ker-gawl, Zingiberaceae and the influence on the dry matter Weight. From the data it was concluded that the best results were reached with the following levels: 20g of N; 80g of P; 20g of K/m² 40g of N; 80g of P; 40g of K/m² 20g of N; 40g of P; 40g of K/m².Estudou-se o efeito de aplicação de diferentes níveis de N P K: N = 0,200, 400; P = 0,400, 800 e K = 0,200, 400 kg/ha, em condições de campo na produção de mudas, por sementes, do hedíquio amarelo, Hedyohium gardnerianum Sheppard ex Ker-Gawl, Zingiberaceae, e sua influência sobre o peso da matéria seca. Através dos dados obtidos concluiu-se que a maior produção da matéria seca total, incluindo-se a parte aérea e o rizoma foram obtidos com os níveis de: a) 20g de N; 80 de P e 20 de K/m² b) 40g de N; 80 de P e 40 de K/m² c) 20g de N; 40 de P e 40 de K/m²