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Green quasifunction method for vibration of simply-supported thin polygonic plates on Pasternak foun
[期刊论文] 作者：YUAN Hong,LI Shan-qing,LIU Ren,
来源：应用数学和力学（英文版） 年份：2004
A new numerical method-Green quasifunction is proposed. The idea of Green quasifunction method is clarified in detail by considering a vibration problem of simp...
Regioselective synthesis and anti-HIV activity of the novel 2- and 4- substituted pyrazolo [4,5-e] [
[期刊论文] 作者：Xin Yong Liu,Ren Zhang Yan,Nia,
来源：中国化学快报（英文版） 年份：2004
The new regioisomer 7-methyl-pyrazolo[4,5-e] [1,2,4]thiadiazine nucleus (5) was synthesized, and its novel mono-N2- or N4-substituted pyrazolo[4,5-e][1,2,4]thia...
[期刊论文] 作者：Li Gen LIU,Ren Xiang TAN,You M,
来源：中国化学快报（英文版） 年份：2004
A new jatrophane diterpenoid ester (2S, 3S, 4R, 5R, 7S, 8R, 13R, 15R) - 3, 5, 7, 8, 15-pentaacetoxy-9, 14-dioxojatropha-6(17), 11E-diene was isolated from the w...
[期刊论文] 作者：Bing LIU,Zhi Lan LIU,Ren Xi ZH,
来源：中国化学快报 年份：2004
Novel interpenetrating polymer network (IPN) hydrogels based on konjac glucomannan (KGM) and poly(acrylic acid) (PAA) were prepared by polymerization and cross-...
Synthesis and Properties of Biodegradable Copolymers of 9-Phenyl-2,4,8,10-tetraoxaspiro-[5,5]undcane
[期刊论文] 作者：Jian XU,Zhi Lan LIU,Ren Xi ZHU,
来源：中国化学快报 年份：2004
Novel biodegradable copolymer poly(CC-co-EEP) was synthesized by ring-opening copolymerization of cyclic carbonate 9-phenyl-2, 4, 8, 10-tetraoxaspiro-[5, 5]undc...
Microwave-assisted Polymerization of ε-Caprolactone with Maleic Acid as Initiator and Drug Release B
[期刊论文] 作者：Ying Song,Li Jian LIU,Ren Xi Z,
来源：中国化学快报 年份：2004
Poly(ε-caprolactone) (PCL) with weight-average molar mass over 10000 g/mol was synthesized by microwave-assisted ring-opening polymerization of ε-caprolactonc...
[期刊论文] 作者：Gui You CUI,Jun Yan LIU,Ren Xi,
来源：中国化学快报 年份：2004
A new flavonol glycoside, isorhamnetin-3-O-β-D-xyloside, was isolated from the extract of leaves and twigs of Alchornea davidii (Euphorbiaceae). Its structure...
[期刊论文] 作者：ZHANG Yue-li,LIU Kai-qi,XIANG Mei-mei,LIU Ren,
来源：城市道桥与防洪 年份：2004
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
[期刊论文] 作者：LIU Kai-qi,XIANG Mei-mei,LIU Ren,ZENG Yong-san,LI Hua,JIANG Xin-yin,ZHANG Yue-li,
来源：城市道桥与防洪 年份：2004
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
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