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Details van artikel 76 van 112 gevonden artikelen
| Titel: |
Near infrared spectroscopy for estimating wood basic density in Eucalyptus urophylla and Eucalyptus grandis |
| Auteur: |
Paulo Ricardo Gherardi Hein Ana Carolina Maioli Campos Paulo Fernando Trugilho José Tarcísio Lima Gilles Chaix |
| Verschenen in: |
Cerne |
| Paginering: | Jaargang 15 (2009) nr. 2 pagina's 133-141 |
| Jaar: |
2009 |
| Inhoud: |
Wood basic density is indicative of several other wood properties and is considered as a key feature for many industrialapplications. Near infrared spectroscopy (NIRS) is a fast, efficient technique that is capable of estimating that property. However,it should be improved in order to complement the often time-consuming and costly conventional method. Research on woodtechnological properties using near infrared spectroscopy has shown promising results. Thus the aim of this study was to evaluatethe efficiency of near infrared spectroscopy for estimating wood basic density in both Eucalyptus urophylla and Eucalyptus grandis.The coefficients of determination of the predictive models for cross validation ranged between 0.74 and 0.86 and the ratio performanceof deviation (RPD) ranged between 1.9 and 2.7. The application of spectral filter, detection and removal of outlier samples, andselection of variables (wavelength) improved the adjustment of calibrations, thereby reducing the standard error of calibration (SEC)and cross validation (SECV) as well as increasing the coefficient of determination (R²) and the RPD value. The technique of nearinfrared spectroscopy can therefore, be used for predicting wood basic density in Eucalyptus urophylla and Eucalyptus grandis. |
| Uitgever: |
Universidade Federal de Lavras - UFLA (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 76 van 112 gevonden artikelen
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