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LORI与网络教育精品课程评估指标体系的比较与分析 被引量:2
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作者 勾学荣 闫晶晶 《中国电化教育》 CSSCI 北大核心 2009年第9期73-76,共4页
国家级网络教育精品课程的评审指标体系经过3年的实践以及不断修订已逐步完善。但是,在理论与实践上还有待进一步提高和发展,本文介绍了一种学习对象评价指标——LORI,通过解读LORI的评估框架结构和各项指标,与网络教育精品课程的评审... 国家级网络教育精品课程的评审指标体系经过3年的实践以及不断修订已逐步完善。但是,在理论与实践上还有待进一步提高和发展,本文介绍了一种学习对象评价指标——LORI,通过解读LORI的评估框架结构和各项指标,与网络教育精品课程的评审方法和内容进行比较分析,提出进一步完善我国网络教育资源建设质量评估的建议,以期促进网络教育的发展。 展开更多
关键词 学习对象 精品课程 LORI 资源建设 网络教育
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Inhibitory Effects of Polygoni Multiflori Caulis Extracts on Matrix Metalloproteinase Activities 被引量:2
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作者 LIU Jun-song YANG Jin-gang +4 位作者 HONG Yuan JIN Feng-hai WANG Ming-cui ZHAO Shu-hua FANG Xue-xun 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2009年第2期211-215,共5页
Matrix metalloproteinases(MMPs) play an essential role in development and tissue remodeling of living organisms. However, the overexpression of MMPs has lead to a series of diseases, such as cancer, arthritis, and a... Matrix metalloproteinases(MMPs) play an essential role in development and tissue remodeling of living organisms. However, the overexpression of MMPs has lead to a series of diseases, such as cancer, arthritis, and atherosclerosis; and inhibition of MMPs may have therapeutic benefits. The discovery of MMP inhibitors from herbal has become a prospective event. We showed that the extract of Polygoni multiflori caulis from ethyl acetate or water(ethyl acetate extract and water extract) can inhibit the activities of MMPs 9, 14, and 16 in a dose-dependent manner and n-butyl alcohol extract of it can also inhibit these MMPs. Furthermore, we found that n-butyl alcohol extract and water extract of it influence the cell viability. These discoveries may contribute to the development of MMP in- hibitors for the therapy of a variety of pathological conditions. 展开更多
关键词 Matrix metalloproteinases(MMPs) Polygoni multi/lori caulis Water extract Cell viability assay
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不浪漫罪名——评Lori McKenna《Unglamorous》
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作者 青鸟 《音乐大观》 2007年第9期32-33,共2页
  她和许巍一样都想超越这平凡的生活,她是五个孩子的母亲,家庭主妇,管道工人的妻子,也是一个歌手,词曲作者,独立发行过4张个人专辑,她就是美国乡村"业余"女歌手Lori McKenna.……
关键词 Unglamorous Lori McKenna 女歌手
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