A new type of dibenzoyl tartaric acid selective electrode has been developed. Three double-arm calix [4] arene derivatives were employed as the neutral ionophor
Caldesia parnassifolia (Bassi ex Linn.) Parl. in China has declined in number in recent years and is increasingly faced with the risk of extirpation arising fro
Web information extraction is viewed as a classification process and a competing classification method is presented to extract Web information directly through