Application of Factor Analysis in study on dose-effect relationship in traditional Chinese medicine prescription Effect of Strychni Semen Pulveratum with different grain size on rats suffered from rheumatoid arthritis and its safety comparison Effect of Strychni Semen Pulveratum with different grain sizes on rats suffered from rheumatoid arthritis and its safety comparison Extraction and isolation of polysaccharide from Portulaca oleracea by traditional process combined with membrane separation technology and evaluation of its anti-oxidant activity Research on dose-effect relationship of Wuwei Xiaodu Drink on antibacterial metabolism by MSPQC Evaluate drug interaction of multi-components in Morus alba leaves based on α-glucosidase inhibitory activity Effect of Herba Ephedrae Decoction on levels of amino acid neurotransmitters in prefrontal cortex of rats