China

  2010 MAR 23 - (VerticalNews.com) -- According to recent research from Taipei, Taiwan, "Classification of dark energy models in the plane of w and w', where w is the dark energy equation of state and w' its time-derivative in units of the Hubble time, has been studied in the literature. We take the current SN Ia, CMB and BAO data, invoke a widely used parametrization of the dark energy equation of state, and obtain the constraints on the w-w' plane. ...read more

  2010 MAR 16 - (VerticalNews.com) -- "The seesaw mechanism for three neutrinos is discussed, clarifying the situation where the seesaw texture results in three approximately zero mass eigenvalues," scientists writing in the journal Physics Letters B report.

  "The true underlying mechanism is shown to be just the inverse (or linear) seesaw, which explains why there could be large mixing. However, these zeroes cannot occur naturally, unless there is a conserved symmetry, i.e. lepton number L, either global or gauged, which is softly or spontaneously broken at the TeV scale," wrote X.G. He and colleagues, National Taiwan University ...read more

  2010 MAR 16 - (VerticalNews.com) -- According to a study from Hohhot, People's Republic of China, "Mechanical and magnetic properties of Rh in bcc, fcc structures and RhH in cubic structure are investigated by using first-principles calculations."

  "Theoretical strengths of these structures are given for the first time. The results show that the NaCl-type cubic RhH has a lower bulk modulus and a theoretical strength larger than those of Rh in bcc and fcc structures," wrote X. Cui and colleagues, Inner Mongolia University ...read more