Commercial linear alkylbenzene sulfonate (LAS), mixture of alkylchain lengths and phenyl position isomers (C10-C13), is widely used as a major constituent of household and industrial detergents in the People’s Republ...Commercial linear alkylbenzene sulfonate (LAS), mixture of alkylchain lengths and phenyl position isomers (C10-C13), is widely used as a major constituent of household and industrial detergents in the People’s Republic of China. Degradation process and behaviour of LAS compounds during an 82-hour lake water die-away study, with an added LAS concentration of 1. 5mg .L-1, was quantified and accomplished by HPLO-UV after extractionon the SepPek C18 reversed - phase cartridges. The degradation rate became progressively faster with increasing chain length. The technique described in this study is fast, sensitive and specific, and can be used to determine low levels, of LAS and for establishing water quality criteria and standards relating to LAS and its compounds.展开更多
A M3. 4 seismic event occurred in the Punggye-ri nuclear test site,D. P. R Korea at 16∶29 p.m. on September 23,2017. We analyzed the waveforms of this event recorded by the China Earthquake Networks Center. In conclu...A M3. 4 seismic event occurred in the Punggye-ri nuclear test site,D. P. R Korea at 16∶29 p.m. on September 23,2017. We analyzed the waveforms of this event recorded by the China Earthquake Networks Center. In conclusion,this event is complex,including an explosion with a successive earthquake. Although the beginning of the event is an explosion,fault dislocation plays the main role in the event.展开更多
State Administration for Market Regulation and Standardization Administration of China have approved the following 173 national standards and 3 national standards with amendment.
State Administration for Market Regulation and Standardization Administration of China have approved the following 374 national standards and 3 national standards with amendment.
October 19,2007 Vice Premier Wu Yi,PRC On behalf of Chinese government,I would like to congratulate the 20th Foundation of World Federation of Acupuncture-Moxibustion Societies(WFAS)and International Acupuncture Congr...October 19,2007 Vice Premier Wu Yi,PRC On behalf of Chinese government,I would like to congratulate the 20th Foundation of World Federation of Acupuncture-Moxibustion Societies(WFAS)and International Acupuncture Congress which is to be held in Beijing,China.And also I give my warm welcome and regards to TCM/Acupuncture colleagues all over the world.展开更多
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China and Standardization Administration of China have approved the following 163 national standards and 81 national reference materials.
General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China and Standardization Administration of China have approved the following 314 national s...General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China and Standardization Administration of China have approved the following 314 national standards.展开更多
Foreword Since the foundation of P.R.C.,the China's power grid develops with a high rate.By now,grids in all provinces except Xinjiang,Tibet,Hainan and Taiwan are AC/DC interconnected together,forming the structur...Foreword Since the foundation of P.R.C.,the China's power grid develops with a high rate.By now,grids in all provinces except Xinjiang,Tibet,Hainan and Taiwan are AC/DC interconnected together,forming the structure of power grid interconnection in the whole country.展开更多
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China has approved the following 8 national measuring verification regulations in 2010 and publicize now.
General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China have approved the following 114 national standards and publicize now.……
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China and Standardization Administration of China have approved the following 121 national standards and 34 reference materials publicize ...General Administration of Quality Supervision,Inspection and Quarantine of P.R.China and Standardization Administration of China have approved the following 121 national standards and 34 reference materials publicize now.展开更多
文摘Commercial linear alkylbenzene sulfonate (LAS), mixture of alkylchain lengths and phenyl position isomers (C10-C13), is widely used as a major constituent of household and industrial detergents in the People’s Republic of China. Degradation process and behaviour of LAS compounds during an 82-hour lake water die-away study, with an added LAS concentration of 1. 5mg .L-1, was quantified and accomplished by HPLO-UV after extractionon the SepPek C18 reversed - phase cartridges. The degradation rate became progressively faster with increasing chain length. The technique described in this study is fast, sensitive and specific, and can be used to determine low levels, of LAS and for establishing water quality criteria and standards relating to LAS and its compounds.
基金sponsored by the Earthquake Research Project of China Earthquake Administration:Study on Magnitude Determination Method in Auto-report and Development of the Real-time Monitoring Software (201508012)
文摘A M3. 4 seismic event occurred in the Punggye-ri nuclear test site,D. P. R Korea at 16∶29 p.m. on September 23,2017. We analyzed the waveforms of this event recorded by the China Earthquake Networks Center. In conclusion,this event is complex,including an explosion with a successive earthquake. Although the beginning of the event is an explosion,fault dislocation plays the main role in the event.
文摘State Administration for Market Regulation and Standardization Administration of China have approved the following 173 national standards and 3 national standards with amendment.
文摘State Administration for Market Regulation and Standardization Administration of China have approved the following 374 national standards and 3 national standards with amendment.
文摘October 19,2007 Vice Premier Wu Yi,PRC On behalf of Chinese government,I would like to congratulate the 20th Foundation of World Federation of Acupuncture-Moxibustion Societies(WFAS)and International Acupuncture Congress which is to be held in Beijing,China.And also I give my warm welcome and regards to TCM/Acupuncture colleagues all over the world.
文摘General Administration of Quality Supervision,Inspection and Quarantine of P.R.China and Standardization Administration of China have approved the following 163 national standards and 81 national reference materials.
文摘General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China and Standardization Administration of China have approved the following 314 national standards.
文摘Foreword Since the foundation of P.R.C.,the China's power grid develops with a high rate.By now,grids in all provinces except Xinjiang,Tibet,Hainan and Taiwan are AC/DC interconnected together,forming the structure of power grid interconnection in the whole country.
文摘General Administration of Quality Supervision,Inspection and Quarantine of P.R.China has approved the following 8 national measuring verification regulations in 2010 and publicize now.
文摘 General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China have approved the following 114 national standards and publicize now.……
文摘General Administration of Quality Supervision,Inspection and Quarantine of P.R.China and Standardization Administration of China have approved the following 121 national standards and 34 reference materials publicize now.
