Time filter

Source Type

Zhou W.B.,718 Research Institute of CSIC | Wu Y.,718 Research Institute of CSIC | Guo Q.L.,718 Research Institute of CSIC | Lu R.,718 Research Institute of CSIC | And 2 more authors.
Frontiers of Energy and Environmental Engineering - Proceedings of the 2012 International Conference on Frontiers of Energy and Environmental Engineering, ICFEEE 2012 | Year: 2013

Android building intercom system has several advantages, such as open source, low cost, good expansibility and compatibility, great UI (User Interface), etc. It has broad application prospects in building intercom field. The paper presents an architecture for a video indoor phone of android building intercom system using Android and JNI (Java Native Interface) technology. The architecture contains two layers, upper layer and lower layer. Upper layer is signaling control layer and SIP (Session Initiation Protocol) protocol is utilized to complete signaling control. Lower layer is realization layer, RTP (Realtime Transport Protocol) transport module, media and other modules are used to do concrete actions specified from upper layer signaling. © 2013 Taylor & Francis Group.


Wu F.-C.,718 Research Institute of CSIC | Wang S.-B.,718 Research Institute of CSIC | Feng H.-B.,718 Research Institute of CSIC | Li B.-D.,718 Research Institute of CSIC | Yang X.-K.,718 Research Institute of CSIC
Xiandai Huagong/Modern Chemical Industry | Year: 2013

As a derivative of trifluoromethanesulfonic acid, trifluoromethanesulfonic acid anhydride has a broad application in chemical industry and pharmaceutical field. This paper focuses on several methods for the preparation of trifluoromethanesulfonic acid anhydride. The most suitable way for indurstrial application is the excess of trifluoromethanesulfonic acid in the reaction with phosphorus pentoxide. The applications of trifluoromethanesulfonic acid anhydride are briefly described. The industrial development prospect of trifluoromethanesulfonic acid anhydride is proposed as well.


Jia W.-D.,718 Research Institute of CSIC | Wang S.-B.,718 Research Institute of CSIC | Yang X.-K.,718 Research Institute of CSIC | Luo J.-Z.,718 Research Institute of CSIC
Xiandai Huagong/Modern Chemical Industry | Year: 2016

The efficient purification process of bis(trifluoromethanesulfonyl)amine ((CF3SO2)2NH) is studied. The (CF3SO2)2NH) crude product with purity of 98% is firstly obtained by vacuum distillation for preliminary purification. Batch vacuum rectification is then used to further remove fluoride ion, trifluoromethanesulfonamide and other impurity. The optimal operating parameters of purification process has been found by the experiment. The purity of the final bis(trifluoromethanesulfonyl)amine under the optimal condition can reach over 99.5% with the yield of about 80%. © 2016, China National Chemical Information Center. All right reserved.

Loading 718 Research Institute of CSIC collaborators
Loading 718 Research Institute of CSIC collaborators