Efeito de fertilizantes nitrogenados no comportamento de plantas de melão cultivadas em casa de vegetação.

Com o objetivo de avaliar o efeito de fontes de nitrogênio sobre a área foliar, a produção de matéria seca e o conteúdo de nitrogênio na parte aérea de plantas de melão (Cucumis melo L.) conduziu-se um ensaio em casa de vegetação, em Petrolina, PE, Brasil, com o híbrido Hy Mark

Laringomalácia

info:eu-repo/semantics/publishedVersio

Influência do diâmetro da prótese nos resultados auditivos e lesão acústica após estapedotomia

info:eu-repo/semantics/publishedVersio

Implications of iron nanoparticles in spontaneous coal combustion and the effects on climatic variables

Atmosphere, water, and soil contamination with toxic compounds is a recurrent issue due to environmental disasters, coal burning, urbanization, and industrialization, allf of which have contributed to soil contamination over the decades. Consequently, understanding of the nanomineralogy and potential hazardous elements (PHEs) in coal area soil are always a vital topic since contaminated soil can affect the environment, agricultural safety, and human health. Colombian coal mining in the La Guajira zone has been usually been related with important health and ecological effects. Coalmine rejects from active and/or abandoned operations are causes of high intensities of potential hazardous elements (PHEs) and nanoparticles (NPs, minerals and/or amorphous compounds). Although these pollutants can be reduced by sorption to NPs, in this study was recognized an analytical procedure for understand distribution of PHEs and their relationship to iron NPs(Fe-NPs) was recognized. Non and poorrly crystalline Fe-NPs performances as the major PHEs association. This complex interaction is constant and efficient in resolving PHEs in proportions above monitoring quantities. The indefinite basis of PHEs in Colombian (La Guajira area) coalmine rejects sources results in years-long leaching of PHEs into rivers and drainages. The iron-clays and their great geomobility interfere the mitigating character that Fe hydr/oxides alone show through adsorption of PHEs and their control in spontaneous coal combustion (SCC) zones. This can have significant consequences to the probable availability of several pollutants (e.g. drinking water). The new results presented in this study add novel viewpoints into the description of Fe-NPs and its incidence in SCC areas. The methodology utilized in this work can be applied as a supplementary technique to evaluate the influence of coalmining actions on ecological and human health

Aplicação de nutrientes na bananeira via água de irrigação por microaspersão.

A área cultivada atualmente no pólo Petrolina (PE) - Juazeiro (BA) com a cultura da banana é aproximadamente 5.000 ha. O objetivo deste trabalho foi avaliar doses de nitrogênio e potássio aplicados via água de irrigação na cultura da bananeira no Submédio São Francisco. O nitrogênio e o potássio foram aplicados via água de irrigação uma vez por semana, utilizando-se injetor hidráulico. A adubação fosfatada foi dividida em partes iguais, aplicadas a cada seis meses. Ajustaram-se, pela análise de regressão, equações quadráticas, cuja melhor dose foi 340 kg ha -1 de N. O nitrogênio influenciou o peso e número de frutos por cacho. O potássio influenciou apenas o número de frutos por cacho

Controle biológico da broca da cana-de-açúcar

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Avaliação da eficiência de fosfatos naturais para cultivo de melão orgânico no Submédio São Francisco.

Suplemento. Edição dos Resumos Expandidos do 45. Congresso Brasileiro de Olericultura; 15. Congresso Brasileiro de Floricultura e Plantas Ornamentais; 2. Congresso Brasileiro de Cultura de Tecidos de Plantas, Fortaleza, ago. 2005

Morphostructure of the S. Vicente Canyon, Marquês de Pombal Fault and Pereira de Sousa Fault (SW Iberia margin)

The S. Vicent Canyon (SVC), Marquês de Pombal Fault (MPF) and Pereira de Sousa Fault (PSF) are located along the SW Iberian margin. The SVC appears to be controlled by the S. Vicent Fault (SVF), a steep NE-SW striking fault that outcrops along the southeast flank of the canyon. To better understand the SVC, MPF and PSF structures and the Meso-Cenozoic morphostructural evolution of this sector it is important to identify the main tectonic phases from the Mesozoic up to Plio-Quaternary. To attain this objective, the main regional structures were mapped using 2D seismic lines and multibeam swath bathymetry data, allowing the mapping of the northern prolongation of PSF and the identification of faults that do not reach the sea floor