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.     

'Dr Steinach coming to make old young!': sex glands,vasectomy and the quest for rejuvenation in the roaring twenties

In the 1920s, research on the endocrine glands--especially the sex glands--was widely expected to lead to revolutionary new ways of improving human life. The medical marketplace was crowded with glandular techniques to revitalize the aged. 'Monkey glands' apart, the Austrian physiologist Eugen Steinach's simple, vasectomy-like operation was perhaps the most popular of these. Steinach was one of the leading endocrine researchers of the early 20th century and the Steinach Operation was based on rigorous laboratory research. It was much more than a simple scientific error, and its history shows us how early endocrine research was shaped by broader social and cultural forces.     

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。     

Rethinking Big Science. Modest,mezzo, grand science and the development of the Bevalac, 1971-1993

Historians of science have tended to focus exclusively on scale in investigations of largescale research, perhaps because it has been easy to assume that comprehending a phenomenon dubbed "Big Science" hinges on an understanding of bigness. A close look at Lawrence Berkeley Laboratory's Bevalac, a medium-scale "mezzo science" project formed by uniting two preexisting machines--the modest SuperHILAC and the grand Bevatron--shows what can be gained by overcoming this preoccupation with bigness. The Bevalac story reveals how interconnections, connections, and disconnections ultimately led to the development of a new kind of science that transformed the landscape of large-scale research in the United States. Important lessons in historiography also emerge: the value of framing discussions in terms of networks, the necessity of constantly expanding and refining methodology, and the importance of avoiding the rhetoric of participants and instead finding words to tell our own stories.     

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。