The effect of simulated silk compounds- amino acids and their yellowing substances onphotofading of ary1methane dyes.and the influence of external factors such as oxygen.pH-value.the wave band of light source and nick...The effect of simulated silk compounds- amino acids and their yellowing substances onphotofading of ary1methane dyes.and the influence of external factors such as oxygen.pH-value.the wave band of light source and nickel salt on phototfading of the dyes on real silkare investigated. The results show that tryptophan and tyrosine well as their yellowing sub-stances accelerate photofading of arylmethane dyes;the photofading process of arylmethandyes on real silk is a photooxidation process and external factors exert different influences onit.展开更多
Sichuan Chemical Company Limited(Sichuan Chemical,SZ: 000155)and Sichuan Lutianhua Co.,Ltd.(Lutianhua,SZ: 000912)jointly announced on July 25th that Sichuan Chemical Holding(Group)
On August 15th, 2007 construction on the 800000t/a urea integrated unit was started in TarimPetrochemical Corporation in Kurle, Xinjiang ofnorthwestern China. China Petroleum 7th Con-struction Company undertook the co...On August 15th, 2007 construction on the 800000t/a urea integrated unit was started in TarimPetrochemical Corporation in Kurle, Xinjiang ofnorthwestern China. China Petroleum 7th Con-struction Company undertook the construction.As the biggest urea production unit in Chinatoday, the 800 000 t/a urea integrated unit adoptsthe ammonia stripping technology and jet fluid-ized bed granulation process technology, respec-tively from Snamprogetti Corporation of Italy andToyo Engineering Corporation of Japan. Wastegas and water discharged from the project aredesigned to meet the national standard.With the abundant natural gas reserves展开更多
文摘The effect of simulated silk compounds- amino acids and their yellowing substances onphotofading of ary1methane dyes.and the influence of external factors such as oxygen.pH-value.the wave band of light source and nickel salt on phototfading of the dyes on real silkare investigated. The results show that tryptophan and tyrosine well as their yellowing sub-stances accelerate photofading of arylmethane dyes;the photofading process of arylmethandyes on real silk is a photooxidation process and external factors exert different influences onit.
文摘Sichuan Chemical Company Limited(Sichuan Chemical,SZ: 000155)and Sichuan Lutianhua Co.,Ltd.(Lutianhua,SZ: 000912)jointly announced on July 25th that Sichuan Chemical Holding(Group)
文摘On August 15th, 2007 construction on the 800000t/a urea integrated unit was started in TarimPetrochemical Corporation in Kurle, Xinjiang ofnorthwestern China. China Petroleum 7th Con-struction Company undertook the construction.As the biggest urea production unit in Chinatoday, the 800 000 t/a urea integrated unit adoptsthe ammonia stripping technology and jet fluid-ized bed granulation process technology, respec-tively from Snamprogetti Corporation of Italy andToyo Engineering Corporation of Japan. Wastegas and water discharged from the project aredesigned to meet the national standard.With the abundant natural gas reserves