Application of near-infrared spectroscopy technology in extraction and concentration process of Reduning injection Real-time release control of alcohol precipitation about Artemisiae Annuae Herba and Lonicerae Flos based on statistical process control technology Rapid determination of total flavonoids, total saponins, and soluble solid content in Fufang Ejiao Syrup by NIRS Construction of NIRS in-line rapid detection model of concentration process of Artemisiae Annuae Herba