نتایج جستجو برای: three way chemometric methods
تعداد نتایج: 3187301 فیلتر نتایج به سال:
Nondestructive detection of tea’s internal quality is great significance for the processing and storage tea. In this study, hyperspectral imaging technology adopted to quantitatively detect content tea polyphenols in Tibetan teas by analyzing features spectrum wavelength ranging from 420 1010 nm. The samples are divided with joint x-y distances (SPXY) Kennard-Stone (KS) algorithms, while six al...
Iron is an essential element used as supplement in different dosage-forms. Different time and expenditure-consuming methods introduced for detection and determination of elemental ions such as atomic absorption. In this research, two different and routine methods containing ATR-IR and atomic absorption were applied to define the amount of iron in 198 samples containing different concentrations ...
recent years have witnessed an increased attention to form focused instruction and consciousness raising activities (ellis, 2002; doughty & williams, 1998) on the one hand and extensive and meaningful exposure to the target language (klapper & rees, 2003; day & bamford, 1998) on the other. due to significance attributed to above mentioned issues by scholars, this study attempted to bridge them ...
Actaea racemosa (black cohosh) has a history of traditional use in the treatment of general gynecological problems. However, the plant is known to be vulnerable to adulteration with other cohosh species. This study evaluated the use of shortwave infrared hyperspectral imaging (SWIR-HSI) in tandem with chemometric data analysis as a fast alternative method for the discrimination of four cohosh s...
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