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刘新刚 《语文世界(高中版)》2005,(Z2)
阅读引领我们有走在豪放雄浑与婉约缠绵之间,穿梭于历史文化和当代文学之中,拨动我们的心弦:或深沉奔放,或悠长强烈……在和谐共振中,放飞我们的思想,让情感与岁月一起成长;在超越时空的对话中,摆渡我们的灵魂,让感悟与精神一起翔空…… 相似文献
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刘新刚 《安徽教育学院学报》2006,24(5):4-8
《德意志意识形态》是马克思主义哲学发展中具有里程碑式意义的著作,蕴涵着丰富的价值哲学理论。价值本质论、价值评价论等哲学价值论思想在《德意志意识形态》中都有所研究。对《德意志意识形态》中价值论思想的发掘,对于当代中国价值论的研究有一定的意义。 相似文献
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Synthesis of Protected Tetrapeptide, N-o-Ns-N (Me) - Val-N (Me) -Val-N ( Me ) -Val-N (Me) -Phe-O^tBu
The protected tetrapeptide, N-o-Ns-N ( Me ) -Val-N ( Me ) -Val-N ( Me ) -Val- N ( Me ) -Phe- OtBu, was prepared from L-valine and L-phenylalanine. Ted-butyl acetate and HClO4 were used to protect carbonyl group, o-nitrobenzenesulfonyl chloride and triethyl amine were used to protect amino group, and N-alkylation was finished with iodomethane. Then the protected amino acid was turned into acid chloride which was taken as coupling reagent. After 14 steps, such as protection, alkylation, deprotection and coupling, the protected tetrapeptide was obtained with a yield of 26.9%. The structures of intermediates and target compound were identified with NMR spectra and high resolution mass spectra. 相似文献
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