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Multivariate classification of cotton cultivars tolerant to salt stress. Author(s): MARCELINO, A. D. A. de L.; FERNANDES, P. D.; RAMOS, J. P. C.; DUTRA, W. F.; CAVALCANTI, J. J. V.; SANTOS, R. C. dos ABSTRACT: Two multivariate methods were adopted to classify salt-tolerant cotton genotypes based on their growth and physiological traits. The genotypes were cultivated in a greenhouse and subjected t... ... Repository: BDPA Publication year: 2022
Pulse sequence induced variability combined with multivariate analysis as a potential tool for 13C solid-state NMR signals separation, quantification, and classification. Author(s): NOVOTNY, E. H.; GARCIA, R. H. S.; AZEVEDO, E. R. de Multivariate Curve Resolution (MCR) is a multivariate analysis procedure commonly used to analyze spectroscopic data providing the number of components coexisting in a chemical system, the pure spectr... ... Repository: BDPA Publication year: 2023
Soil classification from visible/near-infrared diffuse reflectance spectra at multiple depths. Author(s): VASQUES, G. de M.; DEMATTE, J. A. M.; LOPEZ, L. R.; TERRA, F. da S. Abstract : Visible/near-infrared diffuse reflectance spectroscopy (VNIRS) offers an alternative to conventional analytical methods to estimate various soil attributes. However, the use of VNIRS in soi... ... Repository: BDPA Publication year: 2011
Streamlined approaches for image classification using principal component analysis and hierarchical clustering of extrudates from coffee and sorghum blends. Author(s): HIDALGO CHÁVEZ, D. W.; SILVA, F. L. C. DA; PINTO, R. V.; CARVALHO, C. W. P. de; FREITAS-SILVA, O. This article describes simple methods to group images including principal component analysis (PCA) and hierarchical clustering of principal components (HCPC). Images of expanded and low expanded extru... ... Repository: BDPA Publication year: 2023
Brazilian Canephora coffee evaluation using NIR spectroscopy and discriminant chemometric techniques. Author(s): BAQUETA, M. R.; ALVES, E. A.; VALDERRAMA, P.; PALLONE, J. A. L. High-quality Brazilian Canephora coffees are rising to the level of specialty coffees in the face of a new industry perception. In this framework, spectra from 527 coffees were analyzed in the near-in... ... Repository: BDPA Publication year: 2023
Characterization of the sheep farming system in the brazilian Semiarid from the multivariate perspective. Author(s): ARANDAS, J. K. G.; ALVES, A. G. C.; FACO, O.; BELCHIOR, E. B.; SHIOTSUKI, L.; RIBEIRO, M. N. Abstract: This study aimed to characterize the purebred Morada Nova sheep and crossbred farming systems in Ceará State, Brazil, through multivariate analysis. The study was carried out in the Morada N... ... Repository: BDPA Publication year: 2020
Characterization of histosol: proposal to the brazilian soil classification system. Author(s): PEREIRA, M. G.; VALLADARES, G. S.; ANJOS, L. H. C.; EBELING, A. G.; BENITES, V. de M. Repository: BDPA Publication year: 2006
Canonical correlations in elephant grass for energy purposes. Author(s): ROSSI, D. A.; MENEZES, B. R. da S.; DAHER, R. F.; GRAVINA, G. de A.; LIMA, R. S. N. de; LEDO, F. J. da S.; GOTTARDO, R. D.; CAMPOSTRINI, E.; SOUZA, C. L. M. de Elephant grass has the potential to be used as a source for energy production. Besides dry matter yield, other characteristics related to biomass quality are important. The canonic correlation analysi... ... Repository: BDPA Publication year: 2014
Cluster analysis in degraded areas by erosion in the Nazareno (MG) region. Author(s): CASSARO, R.; FERREIRA, R. R. M.; FERREIRA, V. R. M.; RODRIGUES, V. G. S. Abstract: When analyzing a database, summarize collected information is the analyst main challenge. In many cases, when you have a large number of data, it may be of interest to create groups. A clust... ... Repository: BDPA Publication year: 2021
Evaluation of ammonia volatilization losses by adjusted parameters of a logistic function(1). Author(s): VALE, M. L. C. do; SOUSA, R. O. de; SCIVITTARO, W. B. Repository: BDPA Publication year: 2014

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