Amino acids are quite important indices to indicate the growth status of oilseed rape under herbicide stress. Near infrared (NIR) spectroscopy combined with chemometrics was applied for fast determination of glutamic acid in oilseed rape leaves. The optimal spectral preprocessing method was obtained after comparing Savitzky-Golay smoothing, standard normal variate, multiplicative scatter corre...

Comparative wood anatomy is the most accepted (traditional) method for identification. However, there an ongoing search effective where traditional methods may be insufficient in distinguishing on species level. Near-infrared spectroscopy (NIRS) one of developing data Scots pine, black sessile oak and Hungarian were collected examined spectral range 12,000–4000 cm−1 with a resolution 4 cm−1. Da...

This paper introduces a novel algorithm that combines the Non-Subsampled Contourlet Transform (NSCT) and morphological operators to reduce the multiplicative noise of synthetic aperture radar images. The image corrupted by multiplicative noise is preprocessed and decomposed into several scales and directions using the NSCT. Then, the contours and uniform regions of each subband are separated fr...

Sweet potatoes are a substantial source of nutrition and can be added to processed foods in the form paste. The moisture starch contents these affect physicochemical properties sweet potato In this study, changes moisture, starch, ?-amylase content were measured for eight weeks after harvest. Using nondestructive near-infrared analyses chemometric models, predicted. partial least squares (PLS) ...

The potential of FT-IR spectra was examined to classify tea samples based on the geographical origins. Principal component analysis (PCA), principal analysis-linear discriminant (PCA-LDA) and partial least square-discriminant (PLS-DA) were investigated in order achieve discrimination samples. Several spectral pre-processing methods, such as mean centering (MC), auto-scaling, multiplicative scat...

With 298 heterogeneous soil samples from Yixing (Jiangsu Province), Zhongxiang and Honghu (Hubei Province), this study aimed to combine a successive projections algorithm (SPA) with a support vector machine regression (SVMR) model (SPA-SVMR model) to improve the estimation accuracy of soil organic carbon (SOC) contents using the laboratory-based visible and near-infrared (VIS/NIR, 350−2500 nm) ...

Background: In this study, Quantitative 32P bremsstrahlung planar and SPECT imaging and consequent dose assessment were carried out as a comprehensive phantom study to define an appropriate method for accurate Dosimetry in clinical practice. Materials and Methods: CT, planar and SPECT bremsstrahlung images of Jaszczak phantom containing a known activity of 32P were acquired. In addition, Phanto...