19 research outputs found
Artificial neural networks in the classification and identification of soybean cultivars by planting region.
Vinte variedades de soja (Glycine max), quatorze convencionais e seis variedades transgĂȘnicas (RR) foram analisadas quanto ao teor de proteĂna, ĂĄcido fĂtico, teor de Ăłleo, fitosterĂłis, cinzas, minerais e ĂĄcidos graxos que foram tabelados e apresentados Ă rede neural do tipo perceptron de mĂșltiplas camadas para a classificação e identificação quanto a regiĂŁo de plantio e quanto a variedade convencional ou transgĂȘnica. A rede neural utilizada classificou e testou corretamente 100% das amostras cultivadas por regiĂŁo. Para o banco de dados contendo informaçÔes sobre sojas transgĂȘnicas e convencionais foi obtido um desempenho de 94,43% no treinamento da rede, 83,30% no teste e 100% na validação
Teor de isoflavones em vinte cultivares de soja semeadas em Londrina e Ponta Grossa.
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Variation in genetic and environmental effects of beta-conglycinin (7S) and glycinin (11S) protein fractions in conventional and GM soybean cultivars grown in Southern Brazil.
Artificial neural networks in the classification and identification of soybean cultivars by planting region.
Vinte variedades de soja (Glycine max), quatorze convencionais e seis variedades transgĂȘnicas (RR) foram analisadas quanto ao teor de proteĂna, ĂĄcido fĂtico, teor de Ăłleo, fitosterĂłis, cinzas, minerais e ĂĄcidos graxos que foram tabelados e apresentados Ă rede neural do tipo perceptron de mĂșltiplas camadas para a classificação e identificação quanto a regiĂŁo de plantio e quanto a variedade convencional ou transgĂȘnica. A rede neural utilizada classificou e testou corretamente 100% das amostras cultivadas por regiĂŁo. Para o banco de dados contendo informaçÔes sobre sojas transgĂȘnicas e convencionais foi obtido um desempenho de 94,43% no treinamento da rede, 83,30% no teste e 100% na validação. Twenty soybean (Glycine max) varieties, 14 conventional and 6 transgenic varieties were analyzed for protein content, phytic acid, oil content, phytosterols, ash, minerals and fatty acids. The data were tabled and presented to the multilayer perceptron neural network for classification and identification of their planting region and whether they were a conventional or transgenic. The neural network used correctly classified and tested 100% of the samples cultivated per region. For the data bank containing information on transgenic and conventional soybean, a performance of 94.43% was obtained in the training of the neural network, 83.30% in the test and 100% in the validation
Kunitz trypsin Inhibitor and phytic acid levels in conventional and genetically modified soybean seeds from Londrina and Ponta Grossa, South Brazil.
ABSTRACT: Differences in the levels of antinutritional components - Kunitz trypsin inhibitor and phytic acid - were determined for conventional and genetically modified soybean cultivated in Londrina and Ponta Grossa, South Brazil. Trypsin inhibitor levels in the conventional cultivars of Londrina and Ponta Grossa varied from 14.56 mg g-1 (BRS 267) to 20.40 mg g-1 (BRS 261) and from 13.51 mg g-1 (BRS 232) to 19.65 mg g-1 (BRS 268), respectively, whereas in the genetically modified (GM) cultivars, they were found to be 14.16 mg g-1 (BRS 242 RR) to 18.21 mg g-1 (BRS 255 RR) for Londrina, and 13.68 mg g-1 (BRS 244 RR) to 18.73 mg g-1 (BRS 256 RR) for Ponta Grossa. Average levels of phytic acid in the Londrina?s conventional and GM samples were estimated as 2.05 and 1.78 mg g-1, respectively, and in the Ponta Grossa conventional and GM samples, the respective average values were lower, 1.60 and 1.51 mg g-1. RESUMO: Diferenças em nĂveis de inibidor de tripsina Kunitz e ĂĄcido fĂtico foram determinadas para cultivares de soja convencionais e transgĂȘnicas cultivadas em Londrina e Ponta Grossa, Sul do Brasil. Os nĂveis de inibidor de tripsina na regiĂŁo de Londrina e Ponta Grossa para variedades convencionais variaram de 14,56 mg g-1 (BRS 267) a 20,40 mg g-1 (BRS 261) e de 13,51 mg g-1 (BRS 232) a 19,65 mg g-1 (BRS 268), respectivamente, enquanto para as variedades transgĂȘnicas foram encontrados valores de 14,16 mg g-1 (BRS 242 RR) a 18,21 mg g-1 (BRS 255 RR) para Londrina e 13,68 mg g-1 (BRS 244 RR) a 18,73 mg g-1 (BRS 256 RR) para Ponta Grossa. A mĂ©dia de teor de ĂĄcido fĂtico em variedades convencionais e transgĂȘnicas de Londrina teve variação de 2,05 a 1,78 mg g-1, respectivamente, enquanto para as mesmas variedades de Ponta Grossa, a mĂ©dia variou de 1,60 a 1,51 mg g-1
Aplicação de redes neurais artificiais na classificação e identificação de cultivares de soja por região de plantio.
National Assessment of Human Health Effects of Climate Change in Portugal: Approach and Key Findings
In this study we investigated the potential impact of climate change in Portugal on heat-related mortality, air pollutionârelated health effects, and selected vectorborne diseases. The assessment used climate scenarios from two regional climate models for a range of future time periods. The annual heat-related death rates in Lisbon may increase from between 5.4 and 6 per 100,000 in 1980â1998 to between 8.5 and 12.1 by the 2020s and to a maximum of 29.5 by the 2050s, if no adaptations occur. The projected warmer and more variable weather may result in better dispersion of nitrogen dioxide levels in winter, whereas the higher temperatures may reduce air quality during the warmer months by increasing tropospheric ozone levels. We estimated the future risk of zoonoses using ecologic scenarios to describe future changes in vectors and parasites. Malaria and schistosomiasis, which are currently not endemic in Portugal, are more sensitive to the introduction of infected vectors than to temperature changes. Higher temperatures may increase the transmission risk of zoonoses that are currently endemic to Portugal, such as leishmaniasis, Lyme disease, and Mediterranean spotted fever