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      subroutine dlwqm6(notot, noseg, conc, thetaseg)

      use timers
      implicit none

      integer, intent(in)    :: notot              ! total number of substances
      integer, intent(in)    :: noseg              ! number of segments
      real,    intent(inout) :: conc(notot, noseg) ! concentrations
      real,    intent(in)    :: thetaseg(noseg)    ! variable theta coefficients per segment

      integer                :: iseg               ! current segment
      integer(4) ithandl /0/
      if ( timon ) call timstrt ( "dlwqm6", ithandl )

      do iseg=1,noseg
         conc(notot,iseg)=thetaseg(iseg)
      enddo

      if ( timon ) call timstop ( ithandl )
      return
      end subroutine dlwqm6