照片上的颜色

大自然中,辉耀着無限丰富的彩色。要把这些彩色正確地記錄在照片上,攝成彩色的照片,在很長的時期內一直是一個很繁複的問題。只是在最近幾年,彩色照相技術才大大地簡化了,廣大的照相愛好者們,現在都能攝製彩色照相了。     

CAS receives 4.8 b yuan for infrastructure upgrade

The Chinese government will earmark 4.8 billion yuan (or US$ 615.4 million) in the next five years for improving the infrastructure facilities at CAS.     

低温超导"热"起来

设想你在家里后院走着走着，突然在一个你自以为洞悉一切的角落里发现了金矿脉；再设想一下电影《豪门新人类》(Beverly Hillbillies)里，Jed Clampett发现石油从地下滚滚而出时的惊喜。2001年初的几个星期，当有研究人员称二硼化镁在温度接近40K时电阻为零，即具备超导性，固体物理学界就沉浸在这种惊喜之中。     

Lay experts and the politics of breast implants

This paper discusses the controversy around breast implants in the United States and Europe. It focuses on the emergence of consumer and support groups for women and offers an analysis of the role they have played in recent policy developments in UK and Europe. The politics of breast implants is seen as a politics of knowledge in which scientific expertise has consistently been deployed in ways that minimize the credibility and legitimacy of women's accounts of their bodies and illness experiences. These women have been doubly disadvantaged in a policy debate that turns on scientific controversy and uncertainty. This implies a gendered dynamic to the changing relations of knowledge and expertise. The paper contributes to an understanding of the relations between regulators, manufacturers, users, and clinicians in the global medical device industry and to wider debates around the public understanding of science.     

State-of-the-art quantum cryptography network

China's first computer network in which communications are secured with quantum cryptography has been successfully tested in Beijing.     

Biomass power generation： toward a sustainable energy future

16 October, 2005 was a day of celebration for the Guangzhou Institute of Energy Conversion(GIEC), CAS, as its technology ofbiomass gasification and power generation (BGPG) was chosen by an evaluation panel of the United Nations Industrial Development Organization as one of the 10 top investment scenarios to apply new technologies for renewable energy utilization.     

灌溉—最耗费的用水

粮食和纤维生产所消耗的水比人类其他用水多,约占人类所有用水的80％左右。爆炸性的人口增长对粮食生产能力有很大压力,这就增加了水的需要量,特别是灌溉用水——这一令人遗憾的最费水的用户。灌溉有可能满足粮食增长的需要,但这一可能的关键在于对水的有效管理。     

大自然积木块的现代观点

过去三十年中,在确定物质构造及其运动的明细组分方面,取得了巨大的进展。本之由一位西非物理学家阐明了我们现在对微观的、甚至更细微水平物质构成的了解。他强调加速器在其中的作用,并对可能存在如此多更基本的粒子表示惊讶。     

氟

不寻常的酸苏联的乌拉尔是富饶的地区。在乌拉尔山脉的内部蕴藏着大量的各种各样的有用的矿物。沿着流经乌拉尔地区的兹拉托乌思金斯基的米亚斯河的右岸绵延着不太高的依立敏斯基山脉。在乌拉尔山脉里天然造成了一个蕴藏着稀有矿物(如黄玉、钛铁矿和其他矿物)的珍奇的仓库。萤石是具有最多样颜色的一种矿石。在阳光照耀下,它的各色晶体闪耀得好像春天里的花朵一样。在萤石的结晶体中显现出光谱中所有的颜色—从红色到紫色。然而萤石值得注