| 1 | 基于论坛的大学英语主题式交互性写作——任务动机视角显示文摘本研究提出主题教学的“任务”研究视角,参照任务动机动态过程研究模型,考察“基于论坛的大学英语主题式交互写作任务”环境下,学习者动机成分对任务投入量及产出性词汇附带刁得效果的影响。研究发现,任务投入量与产出性词汇附带习得成绩相关性很弱,前者的主要预测变量是外生目标、同伴行为与英语书面交流意愿,后者则是当前任务价值评价与内在学习目标。就产出性词汇附带习得而言,主题式论坛交互写作任务显著优于独立“读+写”任务。基于上述发现,本文讨论了计算机支持环境下依托教学的发展前景,提出课程论坛生态学习系统的解释模型。 | 龚嵘 Danling Fu | 2011 | 外语电化教学2011，，5： | 13 |
| 2 | Anti-tumor Activity of Biodegradable Polymer-paclitaxel Conjugated Micelle Against Mice U14 Cervical Cancers显示文摘Two kinds of paclitaxel(PTX) conjugate micelles,of which one contained 25%(mass fraction) PTX [M(PTX)] and the other contained 22.5%(mass fraction) of PTX and 1.4%(mass fraction) of folate(FA)[FA-M(PTX)],were prepared for cell apoptosis and anti-tumor activity evaluation on U14 cervical cancer mouse models in comparison with 0.9%(mass fraction) saline(control) and equivalent Taxol.Seven days after tail intravenous injection of the drugs,the mice were sacrificed to measure the tumor masses.The average tumor masses were 4.26,2.89,2.63,and 2.17 g for the control,Taxol,M(PTX) and FA-M(PTX) groups,respectively.The inhibition rates of tumor growth calculated for the three drug groups were 32%,38% and 49%,respectively.Flow cytometry(FC) analysis and terminal deoxynucleotidyl transferase(TdT)-mediated deoxyuridine triphosphate(dUTP) nick end labeling(TUNEL) assay were conducted on the cancer tissues.The cell apoptosis rates based on the FC data and the TUNEL data were 20%,31%,37%,42%,and 10%,22%,26%,34%,respectively,both showing statistically significant differences(P<0.05) between three drug groups and the control group,and between the FA-M(PTX) group and the other two drug groups.In conclusion,the composite FA-M(PTX) micelles can be used for U14 cervical cancer treatment. | CHEN Fengl DONG Danl FU Yan ZHENG Yong-hui LIU Shi CHANG Ming-xin JING Xia-bin | 2012 | Chemical Research in Chinese Universities2012，28，4： | 4 |
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