Sponsored by the Joint Office of the Academic Divisions of the Chinese Academy of Sciences (CAS), the Functional Department of the Chinese Academy of Engineering Science(CAE), and the Chinese Science News, a leading s...Sponsored by the Joint Office of the Academic Divisions of the Chinese Academy of Sciences (CAS), the Functional Department of the Chinese Academy of Engineering Science(CAE), and the Chinese Science News, a leading science newspaper published by the CAS, more than 400 members of the CAS and CAE have chosen last year’s top 10 science events in China by balloting. At a press conference held at the Chinese Conference Hall of Science and Technology in Beijing on December 24, 1996, Professor Zhu Guangya, Vice Chairman of the Chinese People’s Political Consultative Conference(CPPCC) and CAE President, disclosed this result to the media. These events are as following:展开更多
1.＂Development Policy for ＂2006-2010 Layout for Rare Earth Industry＂ and the Development of RE ndustry＂ Being Established To strengthen macro control toward rare earth industry, take reasonable utilization of stra...1.＂Development Policy for ＂2006-2010 Layout for Rare Earth Industry＂ and the Development of RE ndustry＂ Being Established To strengthen macro control toward rare earth industry, take reasonable utilization of strategic resources, and transfer predominance at rare earth resources into economy advantages, RE Office of National Development and Reform Commission is draftin~ ＂Development Policy for Rare Earth Industry＂ and ＂2006-2010 Layout for the Development of RE Industry＂. In ＂Industry Policy＂, relevant policies from 7 aspects are put forward, such as layout for the development of the industry, mining.展开更多
1. Management to the Investment in Rare Earth IndustryConfirmedIn July 2004, "Decision on the Reform in Investment System" was formally publicized by the State Council of the People's Republic of China. ...1. Management to the Investment in Rare Earth IndustryConfirmedIn July 2004, "Decision on the Reform in Investment System" was formally publicized by the State Council of the People's Republic of China. The fifth item in the Decision stipulates that ore exploitation, smelting & separation and rare earth deep-processed projects with total investment over RMB￥100 million should be approved by the investment governing department of the State Council, and that展开更多
China’s top 10 S&T progresses achieved in 2006, as voted by 565 members of CAS and the Chinese Academy of Engineering on 21 January, 2007 in Beijing, are as follows.
The top 10 major science and technology achievements were chosen by 485 members of the Chinese Academy of Sciences (CAS) or Chinese Academy of Engineering (CAE) from 20 options. The results of the survey were released...The top 10 major science and technology achievements were chosen by 485 members of the Chinese Academy of Sciences (CAS) or Chinese Academy of Engineering (CAE) from 20 options. The results of the survey were released in early January, 2001 in Beijing. The top 10 scientific achievements for the year 2000 are as follows:展开更多
A total of 485 members of the Chinese Academy of Sciences (CAS) or the Chinese Academy of Engineering (CAE) recently selected China’s top 10 news events of scientific and technological progress in the year 2000. The ...A total of 485 members of the Chinese Academy of Sciences (CAS) or the Chinese Academy of Engineering (CAE) recently selected China’s top 10 news events of scientific and technological progress in the year 2000. The followings are the events in descending order of votes: 1. Major progress was scored in a research into super hybrid rice led by CAE Member Yuan Longping. The per-hectare output of the super rice in a 70-hectare demonstration area hit 10.5 ton.展开更多
Our regular readers may notice that the Chinese textile industry becomes the protagonist of this issue’s Who’s Who column, which was used to mainly focus on specific person or company. That’s because since last yea...Our regular readers may notice that the Chinese textile industry becomes the protagonist of this issue’s Who’s Who column, which was used to mainly focus on specific person or company. That’s because since last year, Chinese textile industry has been passing through the most challenging stage in the past decades of reform and restructuring and, still, the pain we face is far from over presently, however, in this tough time, the entire industry, united as one, make itself better able to overcome the daunting difficulties. I am not simply making a semantic point, the top ten touching images of our choice displayed in many ways, such as: love, devotion, wisdom, creation, openness as well as cooperation, etc, paid atteatment to my view. Every single individual has its unique strength, however, when we are gathering, we can go from strength to strength……展开更多
Hotan Prefecture is located at the southwestern edge of Taklimakan Desert, the world＇s largest shifting sand desert, of China. The desert is one of the main sources for frequent sand-dust weather events which strongl...Hotan Prefecture is located at the southwestern edge of Taklimakan Desert, the world＇s largest shifting sand desert, of China. The desert is one of the main sources for frequent sand-dust weather events which strongly affect the air quality of Hotan Prefecture. Although this region is characterized by the highest annual mean PMlo concentration values that are routinely recorded by environmental monitoring stations across China, both this phenomenon and its underlying causes have not been adequately addressed in previous researches. Reliable pollutant PM_10 data are currently retrieved using a tapered element oscillating microbalance （TEOM） 1400a, a direct real-time monitor, while additional concentration values including for PM_2.5, sulfur dioxide （SO_2）, nitrogen dioxide （NO_2）, carbon monoxide （CO） and ozone （O_3） have been collected in recent years by the Hotan Environmental Monitoring Station. Based on these data, this paper presents a comparison of the influences of different kinds of sand-dust weather events on PM_10 （or PM_2.5） as well as the concentrations of other gaseous pollutants in Hotan Prefecture. It is revealed that the highest monthly average PM_10 concentrations are observed in the spring because of the frequent occurrence of three distinct kinds of sand-dust weather events at this time, including dust storms, blowing dust and floating dust. The floating dust makes the most significant contribution to PM_10 （or PM_2.5） concentration in this region, a result that differs from eastern Chinese cities where the heaviest PM_10 pollution occurs usually in winter and air pollution results from the excess emission of local anthropogenic pollutants. It is also shown that PM_10 concentration varies within wpical dust storms. PM_10 concentrations vary among 20 dust storm events within Hotan Prefecture, and the hourly mean concentrations tend to sharply increase initially then slowly decreasing over time. Data collected from cities in eastern China show the opposite with the hourly mean PM_10 （or PM_2.5） concentration tending to slowly increase then sharply decrease during heavy air pollution due to the excess emission of local anthropogenic pollutants. It is also found that the concentration of gaseous pollutants during sand-dust weather events tends to be lower than those cases under clear sky conditions. This indicates that these dust events effectively remove and rapidly diffuse gaseous pollutants. The analysis also shows that the concentration of SO_2 decreases gradually at the onset of all three kinds of sand-dust weather events because of rapidly increasing wind velocity and the development of favorable atmospheric conditions for diffusion. In contrast, changes in O_3 and NO_2 concentrations conformed to the opposite pattern during all three kinds of sand-dust weather events within this region, implying the inter transformation of these gas species during these events.展开更多
文摘Sponsored by the Joint Office of the Academic Divisions of the Chinese Academy of Sciences (CAS), the Functional Department of the Chinese Academy of Engineering Science(CAE), and the Chinese Science News, a leading science newspaper published by the CAS, more than 400 members of the CAS and CAE have chosen last year’s top 10 science events in China by balloting. At a press conference held at the Chinese Conference Hall of Science and Technology in Beijing on December 24, 1996, Professor Zhu Guangya, Vice Chairman of the Chinese People’s Political Consultative Conference(CPPCC) and CAE President, disclosed this result to the media. These events are as following:
文摘1.＂Development Policy for ＂2006-2010 Layout for Rare Earth Industry＂ and the Development of RE ndustry＂ Being Established To strengthen macro control toward rare earth industry, take reasonable utilization of strategic resources, and transfer predominance at rare earth resources into economy advantages, RE Office of National Development and Reform Commission is draftin~ ＂Development Policy for Rare Earth Industry＂ and ＂2006-2010 Layout for the Development of RE Industry＂. In ＂Industry Policy＂, relevant policies from 7 aspects are put forward, such as layout for the development of the industry, mining.
文摘1. Management to the Investment in Rare Earth IndustryConfirmedIn July 2004, "Decision on the Reform in Investment System" was formally publicized by the State Council of the People's Republic of China. The fifth item in the Decision stipulates that ore exploitation, smelting & separation and rare earth deep-processed projects with total investment over RMB￥100 million should be approved by the investment governing department of the State Council, and that
文摘China’s top 10 S&T progresses achieved in 2006, as voted by 565 members of CAS and the Chinese Academy of Engineering on 21 January, 2007 in Beijing, are as follows.
文摘The top 10 major science and technology achievements were chosen by 485 members of the Chinese Academy of Sciences (CAS) or Chinese Academy of Engineering (CAE) from 20 options. The results of the survey were released in early January, 2001 in Beijing. The top 10 scientific achievements for the year 2000 are as follows:
文摘A total of 485 members of the Chinese Academy of Sciences (CAS) or the Chinese Academy of Engineering (CAE) recently selected China’s top 10 news events of scientific and technological progress in the year 2000. The followings are the events in descending order of votes: 1. Major progress was scored in a research into super hybrid rice led by CAE Member Yuan Longping. The per-hectare output of the super rice in a 70-hectare demonstration area hit 10.5 ton.
文摘Our regular readers may notice that the Chinese textile industry becomes the protagonist of this issue’s Who’s Who column, which was used to mainly focus on specific person or company. That’s because since last year, Chinese textile industry has been passing through the most challenging stage in the past decades of reform and restructuring and, still, the pain we face is far from over presently, however, in this tough time, the entire industry, united as one, make itself better able to overcome the daunting difficulties. I am not simply making a semantic point, the top ten touching images of our choice displayed in many ways, such as: love, devotion, wisdom, creation, openness as well as cooperation, etc, paid atteatment to my view. Every single individual has its unique strength, however, when we are gathering, we can go from strength to strength……
基金supported by the National Natural Science Foundation of China(91644226)the National Key Research Project of China(2016YFA0602004)the Fundamental Research Funds of Chinese Academy of Meteorological Sciences(2017Y005)
文摘Hotan Prefecture is located at the southwestern edge of Taklimakan Desert, the world＇s largest shifting sand desert, of China. The desert is one of the main sources for frequent sand-dust weather events which strongly affect the air quality of Hotan Prefecture. Although this region is characterized by the highest annual mean PMlo concentration values that are routinely recorded by environmental monitoring stations across China, both this phenomenon and its underlying causes have not been adequately addressed in previous researches. Reliable pollutant PM_10 data are currently retrieved using a tapered element oscillating microbalance （TEOM） 1400a, a direct real-time monitor, while additional concentration values including for PM_2.5, sulfur dioxide （SO_2）, nitrogen dioxide （NO_2）, carbon monoxide （CO） and ozone （O_3） have been collected in recent years by the Hotan Environmental Monitoring Station. Based on these data, this paper presents a comparison of the influences of different kinds of sand-dust weather events on PM_10 （or PM_2.5） as well as the concentrations of other gaseous pollutants in Hotan Prefecture. It is revealed that the highest monthly average PM_10 concentrations are observed in the spring because of the frequent occurrence of three distinct kinds of sand-dust weather events at this time, including dust storms, blowing dust and floating dust. The floating dust makes the most significant contribution to PM_10 （or PM_2.5） concentration in this region, a result that differs from eastern Chinese cities where the heaviest PM_10 pollution occurs usually in winter and air pollution results from the excess emission of local anthropogenic pollutants. It is also shown that PM_10 concentration varies within wpical dust storms. PM_10 concentrations vary among 20 dust storm events within Hotan Prefecture, and the hourly mean concentrations tend to sharply increase initially then slowly decreasing over time. Data collected from cities in eastern China show the opposite with the hourly mean PM_10 （or PM_2.5） concentration tending to slowly increase then sharply decrease during heavy air pollution due to the excess emission of local anthropogenic pollutants. It is also found that the concentration of gaseous pollutants during sand-dust weather events tends to be lower than those cases under clear sky conditions. This indicates that these dust events effectively remove and rapidly diffuse gaseous pollutants. The analysis also shows that the concentration of SO_2 decreases gradually at the onset of all three kinds of sand-dust weather events because of rapidly increasing wind velocity and the development of favorable atmospheric conditions for diffusion. In contrast, changes in O_3 and NO_2 concentrations conformed to the opposite pattern during all three kinds of sand-dust weather events within this region, implying the inter transformation of these gas species during these events.
