22
2017-12
Shuffling comes into sharp focus
An aerial photo taken on Oct 26 shows Rongcheng county of the Xiongan New Area. [Photo/VCG] An outline released on Wednesday on the integrated development of the Beijing-Tianjin-Hebei region has offe
2017-12-22
22
2017-12
One step forward, one step back for global carbon emission cuts
The divergence of policies and priorities of the world's two largest economies in combating climate change stood in stark contrast on Monday. In Beijing, where improving air quality has become a major
2017-12-22
25
2017-11
The role and purpose of sodium sulfite
Used for the microanalysis and determination of tellurium and niobium, as well as the preparation of developer solutions, and also as a reducing agent;
2017-11-25
25
2017-11
Mechanism of action of sodium sulfonate superplasticizer
Surfactant molecules generally have two functional groups: hydrophilic and hydrophobic. Hydrophobic groups are various alkyl or alkaryl groups; Hydrophilic groups are generally salts that can dissociate ions. According to the different ions dissociated by hydrophilic groups, surfactants can be divided into.
2017-11-25
