期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
出口贸易中的隐含碳计算--以水泥行业为例 被引量:16
1
作者 李丁 汪云林 牛文元 《生态经济》 CSSCI 北大核心 2009年第2期58-60,共3页
文章介绍了出口贸易中隐含碳的概念和内涵,并结合中国出口贸易的实际情况对水泥出口中的隐含碳做了计算。结果为:2006年,中国的出口水泥贸易中隐含了超过千万吨的CO2排放,因为是在中国进行的生产,所以按照相关国际条约的规定,这部分消... 文章介绍了出口贸易中隐含碳的概念和内涵,并结合中国出口贸易的实际情况对水泥出口中的隐含碳做了计算。结果为:2006年,中国的出口水泥贸易中隐含了超过千万吨的CO2排放,因为是在中国进行的生产,所以按照相关国际条约的规定,这部分消耗实际上还需要由中国来承担,其价值大约占到水泥出口贸易额的15.8%,远远超过一般水泥出口的平均利润率水平。因此,这种高能耗、高碳排放产品的出口在今后的对外贸易中须严格限制,为中国在国际事务中赢得更多的主动权。 展开更多
关键词 隐含碳 碳源计算 水泥 出口贸易
下载PDF
Biomedical X-ray Imaging Enabled by Carbon Nanotube X-ray Sources
2
作者 Guohua Cao 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2018年第4期529-536,615,共9页
Although discovered more than 100 years ago, X-ray source technology has evolved rather slowly. The recent invention of the carbon nanotube (CNT) X-ray source technology holds great promise to revolutionize the fiel... Although discovered more than 100 years ago, X-ray source technology has evolved rather slowly. The recent invention of the carbon nanotube (CNT) X-ray source technology holds great promise to revolutionize the field of biomedical X-ray imaging. CNT X-ray sources have been successfully adapted to several biomedical imaging applications including dynamic rnicro-CT of small animals and stationary breast tomosynthesis of breast cancers. Yet their more irnportant biomedical imaging applications still lie ahead in the future, with the devel- oprnent of stationary rnulti-source CT as a noteworthy exarnple. 展开更多
关键词 Biomedical imaging X-ray imaging X-ray source Carbon nanotube X-raysource Carbon nanotube Field emission Cornputed tornography Breast tornosynthesis
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部