Fruticultura tropical: o biribazeiro Rollinia mucosa (Jacq.) Baill.

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The Power Spectrum of Galaxies in the Nearby Universe

We compute the power spectrum of galaxy density fluctuations in a recently completed redshift survey of optically-selected galaxies in the southern hemisphere (SSRS2). The amplitude and shape of the SSRS2 power spectrum are consistent with results of the Center for Astrophysics redshift survey of the northern hemisphere (CfA2), including the abrupt change of slope on a scale of 30-50Mpc/h; these results are reproducible for independent volumes of space and variations are consistent with the errors estimated from mock surveys. Taken together, the SSRS2 and CfA2 form a complete sample of 14,383 galaxies which covers one-third of the sky. The power spectrum of this larger sample continues to rise on scales up to ~ 200Mpc/h, with weak evidence for flattening on the largest scales. The SSRS2+CfA2 power spectrum and the power spectrum constraints implied by COBE are well-matched by an Omega*h ~ 0.2, Omega+lambda_0=1 CDM model with minimal biasing of optically-selected galaxies.Comment: Accepted for publication in The Astrophysical Journal Letters, Sept. 23, 1994. 10 pages uuencoded compressed postscript, including two figures. JHU-9410200

Registro de introduções de plantas de cultura pré-colombiana coletadas na Amazônia brasileira.

Registro de introduções do material coletado nas viagens realizadas de 1984 a 1988. Principais características das plantas matrizes: timbó, dao, acai, tucuma, cupuaçu, biriba, condessa, graviola, araticum, palmeiras do gênero oenocarpus, pupunha, urucu, taperebá, cutite, cajarana, cacau, plantas medicinais, boldo.bitstream/item/63464/1/CPATU-Doc58.pd

Coleta de plantas de cultura pré-colombiana na Amazônia brasileira.

pt. I: Metodologia de expedições realizadas para coleta de germoplasma: pr. 2: Trabalhos realizados na sede da Embrapa Amazônia Oriental.bitstream/item/63980/1/CPATU-Doc99.pdf; bitstream/item/61632/1/CPATU-Doc107.pd

Expedições de coletas de feijão comum (Phaseolus vulgaris) no Brasil.

Objetivando a preservação da diversidade genética ainda existente entre os agricultores tradicionais de feijão comum, foram realizadas expedições de coleta na Região Norte do Rio Grande do Sul e nos Estados de Sergipe, Bahia e Ceará

Divergência genética de genótipos de videira no semi-árido brasileiro.

O objetivo do presente trabalho foi avaliar a divergência genética entre genótipos de videira, visando identicar aqueles promissores para utilização como progenitores e cruzamentos, fornecendo subsídios para o programa de melhoramento da videira

What are the Best Hierarchical Descriptors for Complex Networks?

This work reviews several hierarchical measurements of the topology of complex networks and then applies feature selection concepts and methods in order to quantify the relative importance of each measurement with respect to the discrimination between four representative theoretical network models, namely Erd\"{o}s-R\'enyi, Barab\'asi-Albert, Watts-Strogatz as well as a geographical type of network. The obtained results confirmed that the four models can be well-separated by using a combination of measurements. In addition, the relative contribution of each considered feature for the overall discrimination of the models was quantified in terms of the respective weights in the canonical projection into two dimensions, with the traditional clustering coefficient, hierarchical clustering coefficient and neighborhood clustering coefficient resulting particularly effective. Interestingly, the average shortest path length and hierarchical node degrees contributed little for the separation of the four network models.Comment: 9 pages, 4 figure

Caracterização fenológica dos acessos de feijão comum (Phaseolus vulgaris).

O objetivo da pesquisa é de caracterizar fenotipicamente os acessos de feijão comum do Banco Ativo de Germoplasma da Embrapa Arroz e Feijão.Pôster - graduação