%0 Journal Article
%T Biochirality and parity violating energy difference<br>
%A WANG Wenqing
%A GONG Yan
%A LI Chen
%A <br>
%J 科学通报(英文版)
%D 2002
%I 
%X Biochirality originates from the chiral influences in the universe. The parity non-conservation of weak neutral current, which takes place through the exchange of neutral boson Z0 combined with the long range Coulomb interaction in atoms and molecules, produces a parity violating energy difference (PVED). In this note, the fact is to be indicated that there is a λ-type second order phase transition of D- and L-alanine (valine) at a certain critical temperature Tc. The PVED is to be calculated as 6×10-5eV/molecule by varieties of modern physical and chemical methods including the differential scanning calorimeter (DSC), SQUID, single crystal X-ray diffraction spectra,Iow-temperature 1H.MAS ssNMR, Raman spectra and ultrasonic measurement. A mechanism that differs from Salam's hypotheses is also discussed here.
%K biochirality
%K PVED
%K D-/L-alanine
%K D-/L-valine<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=080FEC66E681A70E0DD20A5A988D3321&yid=C3ACC247184A22C1&vid=F4B561950EE1D31A&iid=DF92D298D3FF1E6E&sid=70E3F4DEB0172F14&eid=C7B13290323C226E&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=2&reference_num=0