2008 MAR 31 - (VerticalNews.com) -- "The specific interaction between angiogenin and aptamer has been investigated by using AFM. The specificity of the interaction is revealed by comparing the binding probability of aptamer to other elements in a series of control experiments," researchers in Changsha, People's Republic of China report.

  "The results have shown that there is specific interaction force between angiogenin and aptamer. Moreover, the single molecular pull-off force between angiogenin and aptamer has also been determined using the Poisson statistical method to be 133.7+/-11.7 pN," wrote X.X. He and colleagues, Hunan University ...read more

  2008 MAR 31 - (VerticalNews.com) -- "The molecular aggregation state of a porphyrin-perylenediimide dyad can be changed by treating with trifluoroacetic acid," scientists in Hangzhou, People's Republic of China report.

  "Transmittance electron microscopy (TEM) images revealed that lamella microstructures were formed when the dyad precipitated from neutral solvent, but spherical nano-particles were obtained when precipitating from acidic solution. X-ray diffraction patterns showed that the lamella microstructures and the nanoparticles were polycrystalline and amorphous solids, respectively," wrote B.Y. Xie and colleagues, Zhejiang University ...read more

  2008 MAR 31 - (VerticalNews.com) -- "A very simple molten-salt method was used to synthesize WO3 nanotubes at moderate temperature (600 C)," scientists writing in the journal Chinese Science Bulletin report.

  "The outer and inner diameters of the WO3 nanotubes were about 100 nm and 30 nm,with a length of dozens of micrometers. TEM and XRD analyses showed that the WO3 nanotubes were single crystal, and had monoclinic structure with the axes preferentially aligned along the [011] direction," wrote M.Y. Kang and colleagues ...read more