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SUPPORTED ZIEGLER-NATTA CATALYSTS FOR ETHYLENE SLURRY POLYMERIZATION AND CONTROL OF MOLECULAR WEIGHT DISTRIBUTION OF POLYETHYLENE 被引量:1
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作者 vladimir zakharov Ludmila Echevskaya +4 位作者 Tatiana Mikenas Mikhail Matsko Andrey Tregubov Marina Vanina Marina Nikolaeva 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2008年第5期553-559,共7页
The effect of chemical composition of highly active supported Ziegler-Natta catalysts with controlled morphology on the MWD of PE has been studied.It was shown the variation of transition metal compound in the MgCl_2-... The effect of chemical composition of highly active supported Ziegler-Natta catalysts with controlled morphology on the MWD of PE has been studied.It was shown the variation of transition metal compound in the MgCl_2-supported catalyst affect of MWD of PE produced in broad range:Vanadium-magnesium catalyst(VMC)produce PE with broad and bimodal MWD(M_w/M_n=14-21).MWD of PE,produced over titanium-magnesium catalyst(TMC)is narrow or medium depending on Ti content in the catalyst(M_w/M_n=3.1-4.8).The oxidati... 展开更多
关键词 Polyethylene(PE) Vanadium magnesium catalyst(VMC) Titanium magnesium catalyst(TMC) Gel permeation chromatography(GPC) Molecular weight distribution(MWD).
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Cognitive disorder in brain concussion
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作者 vladimir zakharov Ekaterina DROZDOVA Nikolay YAKHNO 《Frontiers in Biology》 CAS CSCD 2014年第4期332-337,共6页
这份报纸有关流行和与大脑震动联系的认知缺陷的临床的特征论述了原来的学习结果。80 个连续病人的认知功能(吝啬的年龄 = 37.40 獩搠癥汥灯摥懌 ? 懌 ?
关键词 认知障碍 脑震荡 认知功能障碍 平均年龄 临床特征 智力迟钝 视觉空间 认知能力
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