Application of LANDSAT data to the study of urban development in Brasilia

The urban growth of Brasilia within the last ten years is analyzed with special emphasis on the utilization of remote sensing orbital data and automatic image processing. The urban spatial structure and the monitoring of its temporal changes were examined in a whole and dynamic way by the utilization of MSS-LANDSAT images for June (1973, 1978 and 1983). In order to aid data interpretation, a registration algorithm implemented in the Interactive Multispectral Image Analysis System (IMAGE-100) was utilized aiming at the overlap of multitemporal images. The utilization of suitable digital filters, combined with the images overlap, allowed a rapid identification of areas of possible urban growth and oriented the field work. The results obtained in this work permitted an evaluation of the urban growth of Brasilia, taking as reference the proposal stated for the construction of the city in the Pilot Plan elaborated by Lucio Costa

Componentes epidemiológicos de isolados de Exserohilum turcicum em genótipos de sorgo.

Suplemento. Edição dos resumos do 44º Congresso Brasileiro de Fitopatologia, 2011, Bento Gonçalves. Resumo 1403

Virulência de isolados de Exserohilum turcicum em genótipos de sorgo.

Suplemento. Edição dos resumos do 44º Congresso Brasileiro de Fitopatologia, 2011, Bento Gonçalves. Resumo 1404

Multi-layer S=1/2 Heisenberg antiferromagnet

The multi-layer $S={1\over 2}$ square lattice Heisenberg antiferromagnet with up to 6 layers is studied via various series expansions. For the systems with an odd number of coupled planes, the ground-state energy, staggered magnetization, and triplet excitation spectra are calculated via two different Ising expansions. The systems are found to have long range N\'eel order and gapless excitations for all ratios of interlayer to intralayer couplings, as for the single-layer system. For the systems with an even number of coupled planes, there is a second order transition point separating the gapless Ne\'el phase and gapped quantum disordered spin liquid phase, and the critical points are located via expansions in the interlayer exchange coupling. This transition point is found to vary about inversely as the number of layers. The triplet excitation spectra are also computed, and at the critical point the normalized spectra appear to follow a universal function, independent of number of layers.Comment: 13 pages plus 8 figure

Métodos de inoculação de Colletotrichum graminicola em colmo de milho.

bitstream/item/25533/1/Circ-137.pd

Epidemias severas da Ferrugem Polissora do milho, na região Sul do Brasil, na safra 2009/2010.

bitstream/item/44165/1/Epidemias-severas.pdfPublicado também na Agrosoft Brasil, 13 dez. 2010 e na Revista do Produtor Rural, ano 4, n. 22, p. 41-43, nov./dez. 2010

Controle químico de grãos ardidos em milho.

Edição dos Anais do XVII Congresso Brasileiro de Sementes, Natal, 2011

Desenvolvimento de metodologia para inoculação de Colletotrichum graminicola em colmo de milho.

bitstream/item/25535/1/Circ-139.pd

Epidemias severas da Ferrugem Polissora do milho na Região Sul do Brasil na safra 2009/2010.

bitstream/item/25534/1/Circ-138.pd