ISSN:0031-9228    

DOI:10.1063/1.2408595

出版商:AIP    

年代:1904

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1809071

出版商:AIP    

年代:1904

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1809076

出版商:AIP    

年代:1904

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1809079

出版商:AIP    

年代:1904

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1809080

出版商:AIP    

年代:1904

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1809082

出版商:AIP    

年代:1904

数据来源: AIP

摘要:

X rays, thanks to their short wavelengths, can probe the shapes of proteins and biomolecules. But a single protein molecule can't withstand a blast of high‐energy photons for long enough to yield atom‐scale structural information. To circumvent this limitation, structural biologists array countless copies of a protein in a crystal. Sharing the radiation dose, each molecule survives to contribute to the protein's diffraction pattern.

ISSN:0031-9228    

DOI:10.1063/1.1809083

出版商:AIP    

年代:1904

数据来源: AIP

摘要:

In typical networks, some nodes are more connected than others. On the Web, think Google; on airline route maps, think O'Hare International. Though intricate and tangled, the topological structure of many such networks exhibits scale‐free properties, because added nodes connect preferentially to others that are already well connected. The distribution in the number of links scales as a power law—most nodes are connected by links to only a few other nodes, but a small number are connected to thousands or millions.

ISSN:0031-9228    

DOI:10.1063/1.1809084

出版商:AIP    

年代:1904

数据来源: AIP

摘要:

Since 1986, when lanthanum barium copper oxide (LBCO) was found to superconduct above 30 K, many other such high‐critical‐temperature (high‐Tc) superconductors have been found, all of them copper oxides having layered structures. The superconductivity appears to arise from the planes of copper and oxygen atoms common to these compounds.

ISSN:0031-9228    

DOI:10.1063/1.1809085

出版商:AIP    

年代:1904

数据来源: AIP

摘要:

Hans Bethe as creator of the Sun. That's a nod to Bethe's research on energy production in stars, for which he received the 1967 Nobel Prize in Physics. The painting, by Bavarian artist Ju¨rgen Jaumann, was commissioned to coincide with an honorary doctorate bestowed on Bethe this summer by the Johann Wolfgang Goethe University in Frankfurt, Germany.

ISSN:0031-9228    

DOI:10.1063/1.2408596

出版商:AIP    

年代:1904

数据来源: AIP