Preparation of charged membranes with acrylic acid acrylonitrile copolymer salt and its characteristics 丙烯酸-丙烯腈共聚物盐荷电膜的制备和性能研究
The charged activated coke can be regenerated by heat process, obtaining high concentration SO_2, which can be used in the production of sulfuric acid, liquid sulfur dioxide or sulfur. 通过加热再生活性焦,可获得高浓度的SO2气体,用于生产硫酸、液体二氧化硫或硫磺,有效回收硫资源。
It order to prepare stable emulsifier-free emulsion, potassium carbonate was charged to neutralize carboxylic acid with the molar ratio of K2CO3 to carboxylic acid being 2:1. The emulsification of the block copolymer was more facilitated when acetone was added. 当加入与羧酸根的摩尔比为2:1的K2CO3时,乳液聚合能够稳定进行。加入丙酮也有利于嵌段共聚物的乳化。
Dry-Charged Valve-Regulated Sealed Lead/ Acid Battery for Motorcycle Use 摩托车用干荷电阀控式密封铅酸蓄电池
Performance experiment of dry-charged lead-acid battery for start-up application after extended storage 超期贮存的干荷电启动型铅酸蓄电池性能试验
The influence of the electrolytic quantity, the charge current density, the charged states of the negative electrode of the lead/ acid battery and temperature to the velocity of the oxygen absorption for the negative electrode were investigated. 本文研究了电液量、充电电流、负极荷电状态、温度对铅酸蓄电池负极吸氧速率的影响。
The activation of Na+ and K+ channels seems to be dependent on screw like rotation outward of S4 segment which is highly conservative and very rich in positively charged amino acid residues. Na+、K+离子通道的激活主要决定于高度保守的带正电荷氨基酸残基密集的S4段,由膜内向膜外方向的拧改锥样旋转。
These results suggest that the increased negatively charged sialic acid residues over the injured DRG neurons contribute to the hyperexcitability by an electrostatic mechanism. 这些结果提示神经元表面负电性的唾液酸的增加,可以通过静电学机制促使损伤的Aα/β神经元发生过度兴奋。
Chitosan, which is a positively charged big molecules, can form nanoparticles with negatively charged nucleic acid under certain condition. The nanoparticles can be absorbed by cell through endocytosis. 壳聚糖(chitosan,CS)是一种带正电荷的大分子,在一定条件下可与带负电荷的核酸结合,形成纳米级别的聚合物可被细胞胞吞。