The solvent extraction of the lanthanoid(IH) ions with HTTA and HP alone in CH[Cl.
P] are the distribution coefficients due to the lanthanoid extraction with HTTA or HP alone under the same experimental conditions).
853] that a combination of one weak and one strong [beta]-diketone can produce the extraction of a mixed adduct accompanied by a synergistic effect as well as with the statement of Hala  that the weaker acid is involved in the mixed adduct as a neutral molecule (the pKa values of HTTA, HP, and PAR are 6.
Taking into account that the partition of HP , HTTA , and PAR  toward the aqueous phase is very low and on the basis of the slope analysis data, the overall equilibrium constants [K.
It can be seen that the curves of HTTA and HP vary practically in the same manner as those including a synergistic agent.
The separation factors and the synergistic coefficients (given also in Table 2) show that the addition of PAR to the chelating extractants HTTA and HP not only enhances the extraction efficiency but improves the selectivity among the lanthanoids as well although it has been generally believed that synergistic extraction makes the separation of metals worse, compared with the extraction with a chelating ligand only.
In the synergistic systems the selectivity among the lanthanoids has been increased upon the change of the chelating extractant HP with HTTA.
HTDC willing to hand site over to private sector when HTTA
or qualified private company ready to pick up cost (original plan to have Chamber of Commerce operate web site didn't work out, but several private firms showing interest).
To that end, HTTA organizers have established a number of objectives for the benefit of their current membership, which pay anywhere from $250 to $1,000 annually to be part of the club.
With the technology industry fraught with more fragmented sectors than state government, HTTA organizers felt regular networking opportunities would help its diverse membership not only get to know each other, but more easily band together to work on common industry-related issues and interests.
Fresh off a marketing director's position at Los Angeles-based sales software startup Thinque Systems Corporation, Chung is particularly focused on linking HTTA members with venture capitalists, and other conventional and alternative financing opportunities.
Armed with issues and concerns raised by informal surveying of its member companies, HTTA recently finalized a lobbying program of protechnology initiatives that it will take to the Legislature's next session, which kicks off this month.