碱性

In the alkaline region, there is a marked drop in the recovery of diaspore.

碱性条件下，一水硬铝石的回收率急剧下降。

Because there is a photoptic tetrachlorocarbon BO blue and yellow anti-alcohol consisting of green film, with the exposure time increased light part of the diazonium decomposition.

由于感平液洋有碱性素蓝BO与黄色感平剂构成的绿色膜层，随着曝平工夫加长，见平局部的重氮基搀合。

The resultant was hydrogenised to remove protective group of amino group, then the product was reacted with NaNO2 to give diazonium salt, which was conjugated with salicylic acid, hydroxybenzene, N-salicyloyl glycine acid to get azo derivatives of 4-ASA.

本文首先对4-ASA的氨基和羟基进行了选择性保护，通过氢化还原法选择性脱除氨基的保护基，然后将氢化产物制成重氮盐，通过与水杨酸、苯酚和水杨酰甘氨酸发生反应生成4-ASA的偶氮衍生物，最后在碱性条件下水解得到最终产物。

The results show that, the static interfacial polymerization was conducted in organic phase. The optimized conditions for NF membrane preparation were obtained: the concentration of PDMAEMA was 2%, the concentration of p-xylylene dichloride was 1 ~ 1.5%, NaHCO_3 can be used to maintain alkalescence, The polymerization can be carried out at room temperature and the reaction time was 5 hour.

研究结果如下：此界面聚合反应在有机相中进行；较优的制备条件为：PDMAEMA浓度为2%，对二氯苄浓度为1～1.5%，应加入少量的NaHCO_3来维持溶液的微碱性，室温下反应即可进行，反应时间为5小时。

The results showed that, both diene and alkaline nitrogen-containing compounds had negative influence on the aromatization stability of the catalyst.

用小型固定床加压反应器研究了液化石油气（C4 LPG）中的丁烯在纳米ZSM-5型催化剂DLG-1上的低温芳构化反应，重点考察了原料中二烯烃和碱性氮杂质，以及反应温度、压力和C4 LPG进料重量空速条件对催化剂芳构化反应活性及稳定性的影响。

The main components of the Yonghe--Taibao granitic pluton are calc-alkali quartz diorite and monzonite.

永和太保花岗岩体主要为钙碱性石英闪长岩和二长花岗岩。

In rare characteristic dipeptide, the higher optimal pH alpha-amylase had the greatest significance.

从低含量二肽来看，碱性的最显著，中性的最不显著。

The combination of epidermal growth factor, basic fibroblast growth factor and insulin-like growth factor can effectively promote the directional differentiation of BMSCs into oligodendrocytes.

碱性成纤维细胞生长因子、表皮生长因子与胰岛素样生长因子联合应用能够有效促进骨髓间充质干细胞向少突胶质样细胞定向分化。

BACKGROUND: Muscle-derived stem cells have some problems in purification, amplification and directional differentiation during in vitro culture. Basic fibroblast growth factor as a membrane of bioactive factor has been paid great attention, due to its biological activity.

背景：肌源性干细胞在体外培养过程中存在纯化、扩增、定向分化等难题，碱性成纤维细胞生长因子作为生物活性因子的一员，因其生物活性的多效性而备受关注。

Objective To explore the possibility of basic fibroblast growth factor and epidermal growth factor combined with st-riatal conditioned medium promoting the directional differentiation of rat bone marrow mesenchymal stem cells into dopaminergic neurons.

目的 探讨联合应用碱性成纤维细胞生长因子、表皮生长因子和纹状体条件培养液定向诱导大鼠骨髓间充质干细胞分化为多巴胺能神经元的可能性。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！