共搜索到33539条信息,每页显示10条信息,共3354页。用时:0小时0分0秒250毫秒
......
Impurity distribution in metallic dysprosium during distillation purification张小伟1,苗睿瑛1,李传军2,吴道高1,闫缓1,王志强1,陈德宏1,颜世宏1,李宗安11. National Engineering Research Center for Rare Earth Materials,General... in distilled metal,such as Al and Fe,was lower in the initial stage,increased slowly in the middle stage,and increased rapidly in the last stage during the process of distillation purification.The......
Impurity distribution in metallic dysprosium during distillation purification张小伟1,苗睿瑛1,李传军2,吴道高1,闫缓1,王志强1,陈德宏1,颜世宏1,李宗安11. National Engineering Research Center for Rare Earth Materials,General... in distilled metal,such as Al and Fe,was lower in the initial stage,increased slowly in the middle stage,and increased rapidly in the last stage during the process of distillation purification.The......
......
......
:TS2 文献标识码:A 文章编号: 1672-7207(2005)05-0828-05 Comparison between solid phase micro-extraction and simultaneous distillation extraction methods for analysis of aroma components in tobacco flavor.... Technical Center of Changde Cigarette Factory, Changde 415000, China) Abstract: The optimal method for analysis of the volatile constituents in tobacco flavor AB1 was obtained by comparison between solid......
......
; Influence of azeotropic distillation on crystal size of CeO2 Fig.5 shows the XRD pattern of the undoped CeO2 synthesized by normal method and azeotropic distillation method. The single fluorite-phase... Synthesis of ZnO doped ceria nanoparticles via azeotropic distillation processing SONG Xiao-lan(宋晓岚), QU Peng(曲 鹏), YANG Hua-ming(杨华明), QIU Guan-zhou(邱冠周) School of Resources Processing......
distillation was conducted at 200 ℃ and 1 kPa. As shown in Fig.2, the boiling point of C2H5OH and C2H3O2H5C2 is about 80 ℃, and they can be removed with atmospheric distillation method. According to Ref... Preparation of high-purity tantalum ethoxide by vacuum distillation YANG Sheng-hai(杨声海)1, CHEN Yong-ming(陈永明)1, YANG Hai-ping(杨海平)1, LIU Yin-yuan(刘银元)1, TANG Mo-tang(唐谟堂)1, QIU Guan-zhou(邱冠周)2......
">The synthesis of Nd3+,Y3+:CaF2 nanopowder was conducted by azeotropic distillation method,which effectively dehydrated hydrous CaF2 and prevented forming hard agglomerates.X-ray diffraction(XRD),scanning...Preparation of Nanometer Nd3+,Y3+ Co-doped CaF2 Powder by Coprecipitation-azeotropic Distillation Technique周志伟1,梅炳初1,SONG Jinghong2,YUAN Dan1,LI Weiwei11. State Key Laboratory of Advanced Technology......