ISSN:0031-9228    

DOI:10.1063/1.2216937

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2216941

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2216942

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2216946

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

The launch of NASA'sWilkinson Microwave Anisotropy Probein June 2001 brought a new level of precision to cosmology. Scanning the whole sky,WMAPmaps the minuscule departures of the cosmic microwave background from a perfectly isotropic, unpolarized 2.725‐K blackbody radiator. The CMB's parts‐per‐105anisotropies and its parts‐per‐107polarization are rich and precise indicators of fundamental properties of the cosmos.

ISSN:0031-9228    

DOI:10.1063/1.2216948

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

Drugs, being molecules themselves, relieve and cure through molecular interactions. Yet hypertension, arrhythmia, and other medical disorders show up on the scales of organs and bodies. To gain a complete picture of how organs work—or fail to work—biologists want to see the coordinated function of molecules in an entire organ, preferably in vivo.

ISSN:0031-9228    

DOI:10.1063/1.2216949

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

Six US semiconductor companies have teamed up to pursue long‐term research with academic scientists and engineers. At two new university‐based nanoelectronics institutes—and a third one in the works—the research varies, but the mission is the same: Find a technology to succeed CMOS.

ISSN:0031-9228    

DOI:10.1063/1.2216950

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

The US remains the world leader in science and technology, but China with total R&D spending that reached $84.6 billion in 2003, is rapidly moving toward the front of the line. And while China's S&T development is rushing forward, many other countries, particularly those in East Asia, are steadily increasing their investments in science, engineering, an mathematics and are becoming serious competitors in the S&T race. Those are the basic findings of the National Science Board's2006 Science and Education Indicators, a biannual report that assesses the state of science worldwide.

ISSN:0031-9228    

DOI:10.1063/1.2216951

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

Some 20 years and $8.6 billion after Yucca Mountain in Nevada was first rated by the US Department of Energy as the best site in the country to permanently store tens of thousands of tons of high‐level nuclear waste, the Bush administration is beginning a new push to get the languishing project moving. But the new initiative, a legislative proposal DOE Secretary Samuel Bodman sent to Congress in early April, faces a difficult time on Capitol Hill.

ISSN:0031-9228    

DOI:10.1063/1.2216952

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

“Do you know that the solar energy that strikes the Earth's surface for one hour is enough to feed the world's current electricity needs for one year?” asks John Cleese of Monty Python fame in a new, hour‐long documentary,The Power of the Sun. “So why haven't we gone solar already?” he continues. “I mean, it's pollution free; there's no global warming; there's no dependence on foreign oil powers; it's decentralized, so it's virtually terrorist‐proof; and effectively there's an infinite supply.”

ISSN:0031-9228    

DOI:10.1063/1.2216954

出版商:AIP    

年代:1906

数据来源: AIP