Turbulent drag reduction and degradation of DNA.
Turbulent drag reduction induced by lambda-DNA is studied. The double-stranded DNA is found to be a good drag reducer when compared with the other normal linear polymers. However, this drag reducing power disappears when the DNA denatures to form two single-strand molecules. Mechanical degradation of DNA is also different from that of the normal linear-chain polymers: DNA is always cut in half by the turbulence. Our results suggest that the mechanism for turbulent degradation of DNA is different from that of the normal flexible long-chain polymers.
Department of Polymer Science and Engineering, Inha University, Incheon, 402-751, Korea.
H J
HJ
Choi
S T
ST
Lim
Pik-Yin
PY
Lai
C K
CK
Chan
D010582:Bacteriophage lambda / Q000737:chemistry; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004277:DNA, Single-Stranded / Q000737:chemistry; D004279:DNA, Viral / Q000737:chemistry*; D009690:Nucleic Acid Conformation; D012996:Solutions
D004277:DNA, Single-Stranded; D004279:DNA, Viral; D012996:Solutions