Binh P.T.,Vietnam Academy of Science and Technology |
Descoutures D.,University Claude Bernard Lyon 1 |
Dang N.H.,Vietnam Academy of Science and Technology |
Dai Nguyen N.P.,University of Tay Nguyen |
Dat N.T.,Vietnam Academy of Science and Technology
Natural Product Communications | Year: 2015
A new gymnomitrane-type sesquiterpenoid, gymnomitrane-3α,5α,9β,15-tetrol (1), was isolated from the fruiting body of Ganoderma lucidum. Its structure was elucidated using spectroscopic methods. This compound significantly inhibited the growth of epidermal growth factor receptor-tyrosine kinase inhibitor EGFR-TKI-resistant human lung cancer A549 and human prostate cancer PC3 cell lines.
Nguyen T.T.H.,University of Tay Nguyen
31st Asian Conference on Remote Sensing 2010, ACRS 2010 | Year: 2010
This paper describes the potential of applying methods to estimate stand volume using remote sensing imagery for the disturbed forest stands in the Central Highlands of Vietnam. The equation of stand volume was defined in the first process based on field data. The methods of regression, k-Nearest neighbor, and regression-kriging were applied to estimate the stand volume using satellite image. The combination of 4 bands SPOT 5 along with normalized difference vegetation index (NDVI) and principal components (PCs) were used in these methods. Validation using independent data indicates that the regression-kriging is the best method for stand volume predictions, simultaneously, it is confirmed that the presence of all SPOT-5 bands improved the prediction result of stand volume. The results show that the more spectral bands included, the lower the root mean square error (RMSE) obtained for all these method.