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Application of Short-wave Near-infrared Reflectance Spectroscopy in Controlling Extract of Fructus Cnidii Using Supercritical Carbon Dioxide

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Chemical Research in Chinese Universities 2007年第1期23卷 116-119页

作者： MI Hong GUO Ye LI Wen-liang Qu Nan DOU Ying ren yu-qiu ren yu-lin College of Chemistry Jinlin University Changchun 130021 P. R. China Baicheng Medical College Baicheng 137000 P. R. China

Fructus cnidii （Chinese name shechuangzi） is the fruit produced by Cnidium monnieri （L.） Cusson （Umbelliferae）. It is a perennial herb that is used to treat skin-related diseases and gynecopathyell. Recent pharmacological studies have revealed crude extracts or components isolated from fructus cnidii possess antiallergic, antipruritic, antidermatophytic, antibacterial, antifungal, and antiosteoporotic activities. Osthole and imperatorin are the major compounds present in shechuangzi. They are often used as standards for the evaluation of the quality of shechuangzi products.

关键词： Fructus cnidii Supercfitical carbon dioxide Short-wave near-infrared diffuse reflectance spectrum Artificial neural network Degree of approximation

Studies on Chemical Constituent of Zizyphus Jujuba in Hebei China

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Chemical Research in Chinese Universities 1992年第2期8卷 177-179页

作者： BAI Guang, ren yu-lin, ZHANG Bin and ZHANG Hui-xiang (Department of Chemistry, Jilin University, Changchun, 130023)

Introduction Jujuba is the fruit of Zizyphus genus(Rhamnaceae) which has been used as a crude drug. Now quite a lot of botanists, chemists and pharmacologists at home and abroad have been deeply interested in the studies on it. Besides the studies on its fruit, a great deal of research work on its other parts has been done So far more

关键词： Zizyphus genus Rhamnaceae Jujuba Dihydroalphitolic acid methyl ester

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一种新的广义水驱曲线

新疆石油地质 2006年第2期27卷 188-190页

作者：任玉林中国石化石油勘探开发科学研究院北京100083

水驱特征曲线是注水开发油田动态预测的主要方法。通过众多研究者的工作,目前已多达50种以上的曲线形式。但由于研究对象、研究思路的不同,应用领域不相一致,致使这些方法的应用受到极大的限制。基于对描述油水相对渗透率比与含水饱和... 详细信息

水驱特征曲线是注水开发油田动态预测的主要方法。通过众多研究者的工作,目前已多达50种以上的曲线形式。但由于研究对象、研究思路的不同,应用领域不相一致,致使这些方法的应用受到极大的限制。基于对描述油水相对渗透率比与含水饱和度关系曲线的方程的修正,建立了能够用一个公式描述各种不同形态水驱曲线的方法。

关键词：油田开发水驱曲线方程采出程度

Isolation and Identification of Novel Compounds from Mulgedium tatarica DC.

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有机化学 2003年第Z1期23卷 39-39页

作者： ren yu-lin ZHOU Ya-Wei YE yun-Hua Key Laboratory of Bioorganic Chemistry and Molecular Engineering Ministry of Education College of Chemistry and Molecular Engineering Peking University Bering 100871

Our study focused on the chemical constituents of Mulgedium tatarica that was collected from Inner Mongolia autonomous region of China. It is not only a folk medicinal herb but also a wild vegetable. It was reported that this plant showed several bioactivities, such as diuretic action, stimulating milk secretion, analgesia and haemorrhoidolysis. [1 ] Fatty acids and other volatile components of Mulgedium tatarica were detected by GC-MS for the first time. [2] From the ethanol extract of the whole plant of Mulgedium tatarica DC., two new compounds, named tataricoside and mulgedin A, have been isolated and characterized. Their structures were identified by UV, IR,HRFABMS, 1H NMR, 13C NMR, HMQC, HMBC and 1H-1H COSY spectral analysis.……

关键词： Mulgedium tatarica chemical constituents volatile components spectral analysis medicinal herb Inner Mongolia

改进的偏最小二乘-近红外光谱法非破坏定量分析Cofrel药品

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光谱学与光谱分析 2007年第6期27卷 1098-1101页

作者：刘名扬孟昱任玉林张寒琦吉林大学化学学院吉林长春130012 辉瑞制药有限公司辽宁大连116600

用改进的偏最小二乘法解析Cofrel药品的近红外漫反射光谱,实现了对其有效成分磷酸苯丙哌林精确的非破坏定量测定。用主成分得分趋势图选择最佳主成分数。讨论了波长范围及原始光谱、一阶导数光谱、二阶导数光谱对测定结果的影响。用HPL... 详细信息

用改进的偏最小二乘法解析Cofrel药品的近红外漫反射光谱,实现了对其有效成分磷酸苯丙哌林精确的非破坏定量测定。用主成分得分趋势图选择最佳主成分数。讨论了波长范围及原始光谱、一阶导数光谱、二阶导数光谱对测定结果的影响。用HPLC法的测定结果作标准,磷酸苯丙哌林预测值的相对误差RE(%)<0·42,满足Cofrel药品实际生产的测定要求。

关键词：偏最小二乘近红外光谱主成分非破坏定量分析 Cofrel(科福乐)药品

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中药泥胡菜化学成分的研究(一)

中国中药杂志 2001年第6期26卷 405-406页

作者：任玉琳杨峻山中国医学科学院中国协和医科大学药用植物研究所北京100094

目的 :对中药泥胡菜全草化学成分进行分离鉴定。方法 :乙醇及各种溶剂萃取 ,色谱技术分离 ,化学及IR ,MS ,1HNMR等光谱技术鉴定化合物。结果 :从全草中分离到 5个化合物 ,为三十一烷烃 (Ⅰ )、蒲公英甾醇乙酸酯 (Ⅱ )、蒲公英甾醇 (Ⅲ ... 详细信息

目的 :对中药泥胡菜全草化学成分进行分离鉴定。方法 :乙醇及各种溶剂萃取 ,色谱技术分离 ,化学及IR ,MS ,1HNMR等光谱技术鉴定化合物。结果 :从全草中分离到 5个化合物 ,为三十一烷烃 (Ⅰ )、蒲公英甾醇乙酸酯 (Ⅱ )、蒲公英甾醇 (Ⅲ )、β 谷甾醇 (Ⅳ )和豆甾醇 (Ⅴ )。结论 :化合物Ⅲ ,Ⅴ为首次从该植物中得到。

关键词：泥胡菜三萜甾醇中药化学成分

先秦儒家人性论的起源、演变、争论及其当代价值

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自然辩证法研究 2019年第4期35卷 82-88页

作者：任昱霖陈声柏兰州大学哲学社会学院兰州730000

人性论在中国哲学史上具有重要的历史地位,其争论实质上是性善还是性恶之争。研究发现,先秦人性论已经不是简单的性善性恶截然二分,孟子的性善论与荀子的性恶论并不是截然对立的。一切有"善"价值的事物,都是"恶"的结果。性善是由性恶发... 详细信息

人性论在中国哲学史上具有重要的历史地位,其争论实质上是性善还是性恶之争。研究发现,先秦人性论已经不是简单的性善性恶截然二分,孟子的性善论与荀子的性恶论并不是截然对立的。一切有"善"价值的事物,都是"恶"的结果。性善是由性恶发展出来的。由恶向善的通路是"心知"。本文将从古代宗教中人性论思想萌芽入手,展现人性论是如何从原始宗教逐步转化而来,探讨孔子、孟子和荀子的人性论思想进而讨论性善性恶的联系与区别及其当代价值。

关键词：人性论先秦孔子孟子荀子性善性恶

PLS-ANN算法-NIR光谱非破坏性Norvasc药物有效成分的定量分析

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高等学校化学学报 2007年第5期28卷 847-850页

作者：吕慧英任玉林刘名扬吉林大学计算机科学与技术学院长春130012 吉林大学化学学院长春130012 清华大学化学系

采用偏最小二乘(PLS)结合人工神经网络(ANN)算法解析Norvasc(络活喜)药片的近红外(NIR)漫反射光谱,实现了对其中有效成分苯磺酸氨氯地平的非破坏定量测定.设计了最佳的PLS-ANN模型,分别讨论了最佳波长范围、导数光谱及输入层和隐含层节... 详细信息

采用偏最小二乘(PLS)结合人工神经网络(ANN)算法解析Norvasc(络活喜)药片的近红外(NIR)漫反射光谱,实现了对其中有效成分苯磺酸氨氯地平的非破坏定量测定.设计了最佳的PLS-ANN模型,分别讨论了最佳波长范围、导数光谱及输入层和隐含层节点数对预测结果的影响.以HPLC法的测定结果作标准,苯磺酸氨氯地平浓度预测值的相对误差RE<3.5%,该方法可用于Norvasc药品实际生产中的质量控制.

关键词：偏最小二乘人工神经网络近红外漫反射光谱非破坏定量分析 Norvasc药片

Statistical analysis on the validity of the cold plasma approximation for chorus waves based on Van Allen Probe observations and their effects on radiation belt electrons

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Earth and Planetary Physics 2025年第1期9卷 159-170页

作者： AoJun ren Jiang yu Jing Wang ZuZheng Chen XiaoMan Liu Planetary Environmental and Astrobiological Research Laboratory(PEARL) School of Atmospheric SciencesSun Yat-sen UniversityZhuhai Guangdong 519000China

Theoretical analysis has demonstrated that the dispersion relation of chorus waves plays an essential role in the resonant interaction and energy transformation between the waves and magnetospheric *** quantitative analyses often simplified the chorus dispersion relation by using the cold plasma ***,the applicability of the cold plasma assumption is doubtful,especially during geomagnetic *** here present a systematic statistical analysis on the validity of the cold plasma dispersion relation of chorus waves based on observations from the Van Allen Probes over the period from 2012 to *** statistical results show that the observed magnetic field intensities deviate substantially from those calculated from the cold plasma dispersion relation and that they become more pronounced with an increase in geomagnetic activity or a decrease in background plasma *** region with large deviations is mainly concentrated in the nightside and expands in both the radial and azimuthal directions as the geomagnetic activity increases or the background plasma density *** addition,the bounce-averaged electron scattering rates are computed by using the observed and cold plasma dispersion relation of chorus *** with usage of the cold plasma dispersion relation,usage of the observed dispersion relation considerably lowers the minimum resonant energy of electrons and lowers the scattering rates of electrons above tens of kiloelectronvolts but enhances those ***,these differences are more pronounced with the enhancement of geomagnetic activity or the decrease in background plasma density.

关键词： chorus waves cold plasma approximation dispersion relations scattering rates