Humic acid (HA ) was abstracted from leonardite,and a composite superabsorbent (HA PSA ) was prepared by compounding poly (acrylic acid ) and lignitic humic acid.
The grief had been there so shortly as to have abstracted nothing of the bloom, and had as yet but given a dignity to what it might eventually undermine.
Sometimes he would sit silent and abstracted, taking no notice of anyone; and at others, when he was in a good humour, he would talk in his own halting way.
And she leant her pretty head back against the sill, with half a yawn and half a sigh, and lapsed into an aspect of abstracted sadness: neither caring nor knowing whether we remarked her.