Geographical origins and varieties identification of hops (Humulus lupulus L.) by multi-metal elements fingerprinting and the relationships with functional ingredients.

Product traceability provides important information for reinforcing hops quality and safety. In this study, multi-metal fingerprinting was used to establish an identification model for classifying hops' geographical origins and varieties. Twenty-two metals derived from hops were analyzed, which were grouped into major, minor, and trace elements.

[A remote sensing band simulation approach based on image spectral library].

The authors proposed an image spectral library based band simulation method. Firstly, the authors clustered the reference image which has the same class composition with the target image by using its pixel spectrum similarity. Secondly, the authors fetched sample from the reference image base on the former cluster image, and then built the image spectral library.