Renewable energies potential in Jamaica

Includes bibliography

Assessment of the genotoxicity of two agricultural residues after processing by diplopods using the Allium cepa assay

Agroindustrial by-products and residues from treatment of sewage sludge have been recently recycled as soil amendments. This study was aimed at assessing toxic potential of biosolid, obtained from a sewage treatment plant (STP), vinasse, a by-product of the sugar cane industry, and a combination of both residues using Allium cepa assay. Bioprocessing of these samples by a terrestrial invertebrate (diplopod Rhinocricus padbergi) was also examined. Bioassay assembly followed standards of the Brazilian legislation for disposal of these residues. After adding residues, 20 diplopods were placed in each terrarium, where they remained for 30 days. Chemical analysis and the A. cepa assay were conducted before and after bioprocessing by diplopods. At the end of the bioassay, there was a decrease in arsenic and mercury. For the remaining metals, accumulation and/or bioavailability varied in all samples but suggested bioprocessing by animals. The A. cepa test revealed genotoxic effects characterized by different chromosome aberrations. Micronuclei and chromosome breaks on meristematic cells and F1 cells with micronuclei were examined to assess mutagenicity of samples. After 30 days, the genotoxic effects were significantly reduced in the soil + biosolid and soil + biosolid + vinasse groups as well as the mutagenic effects in the soil + biosolid + vinasse group. Similar to vermicomposting, bioprocessing of residues by diplopods can be a feasible alternative and used prior to application in crops to improve degraded soils and/or city dumps. Based on our findings, further studies are needed to adequately dispose of these residues in the environment. © 2013 Springer Science+Business Media Dordrecht.

Apresentação de uma indústria sucroalcooleira sob os conceitos de microrrede de energia elétrica

Pós-graduação em Engenharia Elétrica - FEIS

O impacto da agroindústria canavieira na região de Jaboticabal-SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desenvolvimento de programa computacional aplicado ao empacotamento do palhiço de cana-de-açúcar

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cogeração a partir da biomassa residual de cana-de-açúcar: estudo de caso

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação técnico-econômica do processo de cogeração em uma indústria sucroalcooleira

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Análise de rentabilidade e risco na produção de cana-de- açúcar na região norte do Estado de São Paulo sob dois tipos de arranjos contratuais

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Estudo da produção de dextranasacarase por Leuconostoc mesenteroides FT 045 B

Pós-graduação em Ciências Biológicas (Microbiologia Aplicada) - IBRC

Cultura e espaço: identidade e território na formação de um arranjo produtivo local potencial em Sertãozinho - SP

Pós-graduação em Geografia - IGCE

Aproveitamento de bagaço em usinas de álcool e açúcar-venda, queima ou hidrólise

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeitos de maturadores químicos aplicados em início de safra na produtividade e qualidade tecnológica da cana-de-açúcar

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Persistência do herbicida sulfentrazone em solos cultivados com cana-de-açúcar e soja e seu efeito em culturas sucedâneas

Pós-graduação em Agronomia (Agricultura) - FCA

Diversidade genética de Rhizoctonia spp. e análise de sequência multilocos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Relações hídricas em cultivares de beterraba em diferentes níveis de salinidade do solo

The excess of salts in the soil can directly affect the development and yield of the plants, therefore, studies on water relationships of crops in such conditions are necessary to prevent or solve the problem. The study was conducted in a greenhouse at Universidade Estadual Paulista, Department of Agricultural Engineering, Botucatu, Brazil. The statistical design used was randomized blocks with four replications, consisting of five levels of soil salinity (1.0, 3.0, 6.0, 9.0, 12.0 dS m-1), two cultivars of sugar beet (Early Wonder and Itapuã) and two types of management of fertigation, totaling in all 80 plots. Measurements of water content of the leaves, diffuse resistance to water vapor, transpiration, leaf area and the water consumption of crop were determined. There was a decrease according to increasing salinity for the analysed physiological parameters in the Early Wonder variety while for the Itapuã variety a gradual increase was observed up to a salinity of 6 dS m-1. The water consumption by plants showed a reduction with increase of soil salinity for the two varieties.