<正>In pursuit for better antiepileptic drug and the importance of semicarbazones and 2,5-disubstituted 1,3,4-thiadiazoles as anticonvulsant pharmacophore,a ser
摘 要:职业中学全面推行素质教育是新形势下提高育人质量,增强办学生命力的必然选择。几年来,迁安职中不断更新观念,结合实际,加强管理,提高师资水平,加大实习实践力度,形成了领导层层抓素质教育,教师人人实施素质教育,学生个个参与素质教育的新格局,在提高育人质量上迈出了坚实的一步。 关键词:素质教育 中图分类号:G630文献标识码:A文章编号:1673-9795(2011)05(c)-0191-01
Novel main-chain-conjugated poly(carbazol-alt-squaraine) and poly(dipyridyl-alt-squaraine) were successfully synthesized through direct polycondensation of 9-(2
语文教师在实施新课程时,必须对自身角色重新进行审视与定位,树立正确的角色意识,以多重身份、多重角色的新形象,身体力行地体现新一轮课程改革的基本理念.教师不应该是学生
A new triterpenoid 3,4,6-trihydroxy-2-oxo-1(10),3,5,7-tetraen-23,24-nor-D:A-friedooleana-29-oic acid,as well as twelve known terpenes were isolated from the roo
One new dammarane-type triterpene saponin, named (20S)-3β,20,21-trihydroxydammar-24-ene 3-O[α-L- rhamnopyranosyl-(1→2)][β-D-xylopyranosyl(l→3)]-β-D-glucop
Three new compounds named (2E)prenyl benzoate-4-O-α-L-arabinopyranosyl (1→6) β-D-glucopyranoside (1), 7-methoxy-8-O-β-D-glucopyranosyl coumarin (2), and 3,4
一个新方法被描述综合从把钾使与臬化合和 60% 硫磺的酸用作氧化剂的 1,10-phenanthrolines 的 phendione 衍生物,它对按比例增加容易适用。反应条件是温和的,收益是优秀的。目
一系列衍生物从是 Trichoderma 出租车 sp 生产的抗真菌的代谢物的 trichodermin (1 ) 被综合。nov。他们的结构被 1H NMR 证实, MS 光谱。他们的抗真菌的活动在 vitro 被评估
Chelate tetra(acetylacetonato) tin(Ⅳ) was prepared and used as catalyst for polytrimethylene terephthalate synthesis.It exhibited higher catalytic activity tha