氧化铝

Alkalescence a flux, such as alkali metals and alkaline-earth metal, zinc oxide and most stain oxide or chromophores components are gender neutral, the principal is alumian oxide, sometimes hemaite and electrolyic, and so on are also included in this composition; acidic components of oxide for silica, phosphoric acid, zirconia, etc.

碱性成分为熔剂，如碱金属、碱土金属、氧化锌及多数的着色氧化物或发色基团；中性成分为两性氧化物，主体为氧化铝，有时将氧化铁和氧化锰等也列入此成分中；酸性成分中有代表性的氧化物为氧化硅、磷酸、氧化锆等

Methods: from prepation of crude drug as start, study the technology of extract and defat with L9 (3~4) orthogonal test. With EtOH extraction and water sed, alkali washing, EtOAC extraction as main methods of eliminate dopant. Finally with alky AlzO3 chromatographic column, rich and gain anticancer active site. The maximum response was achieved at a 40 min extracting time with 10 times volume 90% EtOH added to the sample for the first time and 30 min for the second time. Adding 10 times water will produce precipitation; Place the precipitation into 6 times petroleum benzin to de-fat at 60℃.

云南红豆杉中抗癌活性物制备工艺研究方法：利用正交设计试验L9(3~4)确定原料药提取工艺为：10倍量90％乙醇提取两次，第一次40分钟，第二次30分钟；醇提液用10倍量水沉；沉淀加6倍量石油醚40℃脱脂；用1mol／L的NaOH溶液碱洗，除去酸性杂质；以碱性氧化铝柱，以环己烷／丙酮为洗脱溶剂，在环己烷-丙酮(6：4)段富集到所需活性部位，洗脱剂用量为3VB。

N -alkylation of aniline by diethyl ether on Al 2O 3 was studied.

研究了在氧化铝催化剂上，苯胺与乙醚气相N -乙基化反应的动力学，得到了幂函数型动力学模型。

Special industrial ceramic、magnet material and machining parts, such as Zirconia, Alumina, NdFeB and AlNiCo products.

特殊工业陶瓷、磁性材料及制品，包括氧化锆、氧化铝材料制作的机械件，钕铁硼、铝镍钴材料制作的永磁零件。

It is essential to control and improve alumina's colour quality during the production.

因此必须在生产过程中控制和提高氧化铝产品的颜色质量。

This article analyzes current state and development of alumina techno logy in China.

对我国氧化铝生产工艺的现状及发展方向进行了综合分析。

It is therefore necessary to understand the role of alumina and its effects on sinter quality and sin1eiiii process.

因此，必须要掌握氧化铝的作用及其对烧结矿质量和生产过程的影响。

In this study, the influence of additives on the mechanical properties and porosity of alumina ceramics is investigated.

本研究主要探讨添加剂对氧化铝陶瓷材料的机械性质及孔隙率之影响。

These factors have resulted in an acceleration in the rate of growth of demand for aluminium and alumina.

这些因素导致了对铝和氧化铝需求的加速上升。

Products in alumina matrix (Al2O3 content of 95% and above).

产品以氧化铝为基体Al2O3含量95%以上）。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。