Any process that activates or increases the frequency, rate or extent of DNA duplex unwinding.
Synonyms:
exact_synonym:
positive regulation of DNA unwinding; positive regulation of duplex DNA melting; up regulation of DNA duplex unwinding; up regulation of DNA unwinding; up regulation of duplex DNA melting; upregulation of DNA duplex unwinding; upregulation of DNA unwinding; upregulation of duplex DNA melting
narrow_synonym:
activation of DNA duplex unwinding; activation of DNA unwinding; activation of duplex DNA melting