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4篇 您的检索式:作者名="FENG Danqing"
    题名 作者 年代 出处 被引量
1A new strategy to iteratively update scalable universal quantitative models for the testing of azithromycin by near infrared spectroscopy显示文摘The training set of a universal near infrared (NIR) model for quantitative analysis of a drug should cover as many samples of this drug in the market as possible. Inevitably the model may fail for new products that have different excipients and production processes. In such circumstances the model should be updated. We here propose a new strategy to iteratively update a universal NIR quantitative model for azithromycin. We prove that universal quantitative models generated from this new strategy are comparably effective for azithromycin injection powders and azithromycin tablets, compared to the strategy using hierarchical clustering method which we reported previously. Furthermore, we establish the correlation coefficient r between a new sample and the training set samples can be used to decide whether or not the model should be updated.ZOU WenBo FENG YanChun DONG JiXiong SONG DanQing HU ChangQin 2013Science China Chemistry2013,56,4:5
2Settlement and metamorphosis of Styela canopus Savigny larvae in response to some neurotransmitters and thyroxin显示文摘The larvae of ascidian Styela canopus Savigny were treated with epinephrine, norepinephrine, L-DOPA, GABA and thyroxin to test the ability of these compounds to induce or inhibit larval settlement and metamorphosis. The results showed that epinephrine, norepinephrine and L-DOPA at the concentration of 1μmol/dm 3 induced larval settlement and metamorphosis in S. canopus, with short exposure (1 h) to 1 μmol/dm 3 of L-DOPA inducing rapid settlement. In contrast, GABA at the concentrations of 0.1 ~100.0 μmol/dm 3 significantly inhibited the settlement and metamorphosis of S. canopus larvae. In addition, thyroxin at 1~50 μg/dm 3 had no effect on larval settlement and metamorphosis in S. canopus. These results suggest the importance of neurotransmitters in the settlement and metamorphosis of S. canopus larvae.FENG Danqing HUANG Ying KE Caihuan ZHOU Shiqiang LI Shaojing 2006Acta Oceanologica Sinica2006,25,3:3
3Construction of a universal quantitative model for the determination of azithro- mycin in granules using near-infrared diffuse reflectance spectros- copy 显示文摘Zou Wenbo Feng Yanchun Song Danqing 2012Joumal of Chinese Pharmaceutical Sciences2012,21,005:1
4The Existing Problems and Their Countermeasures of Regional Brand of Intellectual Property Rights Which Affecting The Long-term Development of Regional Economy显示文摘Feng Hong Danqing Liang 2014Journal of Zhouyi Research2014,,4:0
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