九十年代以来古典词学研究的八大领域

二十世纪九十年代以来,古典词学在词学史研究、词学理论研究、词学文献研究、词学个案研究、词学流派研究、词学文化研究、词学接受研究、词学学术史研究八大领域都取得了可见的成绩。这标示出我国古典词学研究的强劲态势,也预示了我国古典词学研究在本世纪前几十年间的基本走向。     

Synthetic and biological studies on a cyclopolypeptide of plant origin

Objective: A natural cyclic peptide previously isolated from Citrus medica was synthesized by coupling oftetrapep-tide units Boc-Leu-Pro-Trp-Leu-Ome and Boc-Ile-Ala-Ala-Gly-Ome after proper deprotection at carboxyl and amino terminals followed by cyclization of linear octapeptide segment.Methods: Solution phase technique was adopted for the synthesis of cyclooctapeptide--sarcodactylamide.Required tetrapeptide units were prepared by coupling of Boc-protected dipeptides viz.Boc-Leu-Pro-OH and Boc-Ile-Ala-OH with respective dipeptide methyl esters Trp-Leu-Ome and Ala-Gly-Ome.Cyclization of linear octapeptide unit was done by p-nitrophenyl ester method.The structure of synthesized cyclopolypeptide was elucidated by FTIR,1H NMR,13C NMR,FABMS spectral data and elemental analysis.The newly synthesized peptide was evaluated for dif-ferent pharmacological activities including antimicrobial,anthelmintic and cytotoxic activities.Results: Synthesis of sarcodac-tylamide was accomplished with >78% yield utilizing dicyclohexylcarbodiimide (DCC) as coupling agent.Newly synthesized peptide possessed potent cytotoxic activity against Dalton's lymphoma ascites (DLA) and Ehrlich's ascites carcinoma (EAC) cell lines,in addition to moderate anthelmintic activity against earthworms Megascoplex konkanensis,Pontoscotex corethruses and Eudrilus sp.Moreover,cyclopolypeptide displayed good antimicrobial activity against pathogenic fungi Candida albicans and Gram-negative bacteria Pseudomonas aeruginosa,in comparison to standard drugs griseofulvin and ciprofloxacin.Conclusion: Solution phase technique employing DCC and triethylamine (TEA) as base proved to be effective for the synthesis of natural cyclooctapeptide.N-methyl morpholine (NMM) was found to be a better base for the cyclization of linear octapeptide unit in comparison to TEA and pyridine.     

八年级（上）第一单元教案

人类的历史就是一部战争的历史。屈辱的战争。我们不应该忘记；和平的阳光。我们更应该珍惜。解读历史，审视现在，展望未来。世界应早日铸剑为犁……本单元选文以叙事类文章为主。有新闻、小说、通讯、书信等文体。有的谴责非正义战争的残酷．有的记叙正义战争的胜利：作者既有“指点江山”的一代伟人，也有“激扬文字”的中外著名作家。学习本单元，要求：1．把握课文内容；2．评价人物形象；3．品味特色语言；4．体验特定情景与人物心情。     

指导背诵例谈

师：同学们，在大屏幕上，老师出示了三段文字，你分别感受到了怎样的声音呢？     

TEM8写作中存在的问题及教学策略

英语专业八级考试写作项目是测试英语专业高年级学生实际写作水平的考项。本文旨在讨论英语学生在TEM8中出现的常见错误,从统一性、连贯性、语言的规范性和全文结构的整体性进行分析,以期在校学生能够有针对性地进行加强练习,在TEM8中取得良好成绩。     

别里科夫的套子不必脱掉

读了契诃夫《装在套子里的人》这篇章，我们明白其主旨在于嘲笑那种思想保守落后，行为与现实格格不入而把自己装在套子里面的人，并以此教育我们要脱掉那个套子。然而在我看来，套子本身是没有错误的，只不过它与当时的沙皇制度相结合，就变成了一种奴役人性的精神枷锁。     

过腊八节

1月17日晴腊八节,俗称"腊八",即农历十二月初八,古人有祭祀祖先和神灵、祈求丰收吉祥的传统。相传这一天还是佛祖释迦摩尼成道之日,称为"法宝节",是佛教盛大节日之一。北方许多地区在这一天都有喝腊八粥、腌制腊八蒜的习俗,我家也不例外。     

是“如厕”还是“入厕”

河北省赵海霞老师就人教版第八册第二课《古诗两首》中《惠崇春江晚景》一诗的“晚”提出：从本诗中的四句所涉及到的景物——桃花开、江水暖、鸭先知、蒌蒿满地芦芽短、河豚欲上时，均属早春景色，并非晚春，诗题中的“晚”应如何理解?     

沐浴在圣哲的灵光里

解读老子 蔚雨轻尘 历史是一片云烟.在这片云烟里,最深的堕落可以被原谅,最无私的牺牲可以被遗忘.任何隆起的巅峰,最终都将归于平淡.然而,一部书却超越了时空,一直传到现在的世界,这就是《道德经》.