From potholed roads,polluted skies and frequent water shortages to a gold medal winner of International Garden City awarded by the United Nations Environment Program and International Federation of Park and Recreation...From potholed roads,polluted skies and frequent water shortages to a gold medal winner of International Garden City awarded by the United Nations Environment Program and International Federation of Park and Recreation Administration.That’s the total turnaround William Brown has seen in Xiamen City in just 30 years.As a professor at Xiamen University in southeast China’s Fujian Province,Brown said he had witnessed radical eco-展开更多
2017 China Textile Innovation Conference was held in Beijing On December 7th.The conference was sponsored by China National Textile and Apparel Council（CNTAC）,supported by Ministry of Industry and Information Techno...2017 China Textile Innovation Conference was held in Beijing On December 7th.The conference was sponsored by China National Textile and Apparel Council（CNTAC）,supported by Ministry of Industry and Information Technology of the People’s Republic of China,and co-organized by China Textile Information Center,China Textiles Development Center,China Fashion Creative Valley,COLORO？,Rieter（China）Textile Instruments Co.,Ltd.,展开更多
This research examined nitrogen mineralization in the top 10 cm of soils along a vegetation gradient in Hong Kong at sites where fire has been absent for 0, 1, 3, 6 and 17 years (at the time of the study), and the rel...This research examined nitrogen mineralization in the top 10 cm of soils along a vegetation gradient in Hong Kong at sites where fire has been absent for 0, 1, 3, 6 and 17 years (at the time of the study), and the relationships between N mineralization and successional development of vegetation in the absence of fire. The sites including a newly burnt area (S1), short grassland (S2), tall grassland (S3), mixed tall grassland and shrubland (S4), and woodland (S5) were selected,and the in situ core incubation method was used to estimate nitrogen mineralization. Throughout the 60-day incubation in four periods, more nitrogen was mineralized at the S3 and S4 sites, the predominantly grassland sites, which contained the highest levels of soil organic matter (SOM) and total Kjeldahl nitrogen (TKN), than the S1 site, while immobilization occurred at the S2 and S5 sites. Leaching loss decreased with successional development of the vegetation, in the order of S1 ＞ S2 ＞ S3 ＞ S4 ＞ S5. The pattern of nitrogen uptake with ecological succession was less conspicuous, being complicated by the immediate effect of fire and possibly the ability of the woodland species to extract nitrogen from the deeper ground.In the absence of fire for 3 to 6 years, the build-up of SOM and TKN was accompanied by active mineralization, thus paving the way for the invasion of shrub and tree species. A close relationship existed between nitrogen mineralization and ecological succession with this vegetation gradient. Inherent mechanisms to preserve nitrogen in a fire-prone environment including immobilization and uptake and the practical relevance of nitrogen mineralization to reforestation are discussed.展开更多
The Liaoyang Petrochemical Company has successfullydeveloped a novel ionic liquid catalyst for carbonylationof ethylene oxide with carbon dioxide to form ethylenecarbonate （EC）. This catalyst can achieve an 100 % co...The Liaoyang Petrochemical Company has successfullydeveloped a novel ionic liquid catalyst for carbonylationof ethylene oxide with carbon dioxide to form ethylenecarbonate （EC）. This catalyst can achieve an 100 % conversionand a 98% selectivity at low temperature andunder low pressure, featuring high catalytic activity, goodstability, good adaptability to feedstocks and low productioncost.展开更多
Through many years' cooperation,SGCC and Shanghai Silicate Research Institute of Chinese Academy of Science successfully developed 650 ampere-hours capacity sodium-sulfur monomeric storage battery with the indepen...Through many years' cooperation,SGCC and Shanghai Silicate Research Institute of Chinese Academy of Science successfully developed 650 ampere-hours capacity sodium-sulfur monomeric storage battery with the independent intellectual property展开更多
Sales revenue for China’s time-honored traditional Chinese medicine(TCM)producer Tongrentang,which has a history reaching back 342 years,hit 13 billion yuan($2 billion) in 2010,with profit of 1 billion yuan($153 mill...Sales revenue for China’s time-honored traditional Chinese medicine(TCM)producer Tongrentang,which has a history reaching back 342 years,hit 13 billion yuan($2 billion) in 2010,with profit of 1 billion yuan($153 million).Overseas development was another high-light of its development with export earnings reaching$28 million.By far,Tongrentang has been China’s top exporter of Chinese patent drugs for 11 years.Today,Tongrentang has set up two展开更多
The scientific achievements appraising conference of multi-font printed Mongolian （mixed with Chinese and English） document recognition system and unified platform-based ethnic languages document recognition system ...The scientific achievements appraising conference of multi-font printed Mongolian （mixed with Chinese and English） document recognition system and unified platform-based ethnic languages document recognition system organized by the Ministry of Education was held on January 29, 2007 at Tsinghua University.展开更多
文摘From potholed roads,polluted skies and frequent water shortages to a gold medal winner of International Garden City awarded by the United Nations Environment Program and International Federation of Park and Recreation Administration.That’s the total turnaround William Brown has seen in Xiamen City in just 30 years.As a professor at Xiamen University in southeast China’s Fujian Province,Brown said he had witnessed radical eco-
文摘2017 China Textile Innovation Conference was held in Beijing On December 7th.The conference was sponsored by China National Textile and Apparel Council（CNTAC）,supported by Ministry of Industry and Information Technology of the People’s Republic of China,and co-organized by China Textile Information Center,China Textiles Development Center,China Fashion Creative Valley,COLORO？,Rieter（China）Textile Instruments Co.,Ltd.,
基金Project supported by the Commonwealth Fellowship Scheme and the United College Endowment Fund of the Chinese University of Hong Kong
文摘This research examined nitrogen mineralization in the top 10 cm of soils along a vegetation gradient in Hong Kong at sites where fire has been absent for 0, 1, 3, 6 and 17 years (at the time of the study), and the relationships between N mineralization and successional development of vegetation in the absence of fire. The sites including a newly burnt area (S1), short grassland (S2), tall grassland (S3), mixed tall grassland and shrubland (S4), and woodland (S5) were selected,and the in situ core incubation method was used to estimate nitrogen mineralization. Throughout the 60-day incubation in four periods, more nitrogen was mineralized at the S3 and S4 sites, the predominantly grassland sites, which contained the highest levels of soil organic matter (SOM) and total Kjeldahl nitrogen (TKN), than the S1 site, while immobilization occurred at the S2 and S5 sites. Leaching loss decreased with successional development of the vegetation, in the order of S1 ＞ S2 ＞ S3 ＞ S4 ＞ S5. The pattern of nitrogen uptake with ecological succession was less conspicuous, being complicated by the immediate effect of fire and possibly the ability of the woodland species to extract nitrogen from the deeper ground.In the absence of fire for 3 to 6 years, the build-up of SOM and TKN was accompanied by active mineralization, thus paving the way for the invasion of shrub and tree species. A close relationship existed between nitrogen mineralization and ecological succession with this vegetation gradient. Inherent mechanisms to preserve nitrogen in a fire-prone environment including immobilization and uptake and the practical relevance of nitrogen mineralization to reforestation are discussed.
文摘The Liaoyang Petrochemical Company has successfullydeveloped a novel ionic liquid catalyst for carbonylationof ethylene oxide with carbon dioxide to form ethylenecarbonate （EC）. This catalyst can achieve an 100 % conversionand a 98% selectivity at low temperature andunder low pressure, featuring high catalytic activity, goodstability, good adaptability to feedstocks and low productioncost.
文摘Through many years' cooperation,SGCC and Shanghai Silicate Research Institute of Chinese Academy of Science successfully developed 650 ampere-hours capacity sodium-sulfur monomeric storage battery with the independent intellectual property
文摘Sales revenue for China’s time-honored traditional Chinese medicine(TCM)producer Tongrentang,which has a history reaching back 342 years,hit 13 billion yuan($2 billion) in 2010,with profit of 1 billion yuan($153 million).Overseas development was another high-light of its development with export earnings reaching$28 million.By far,Tongrentang has been China’s top exporter of Chinese patent drugs for 11 years.Today,Tongrentang has set up two
文摘The scientific achievements appraising conference of multi-font printed Mongolian （mixed with Chinese and English） document recognition system and unified platform-based ethnic languages document recognition system organized by the Ministry of Education was held on January 29, 2007 at Tsinghua University.
