Accurate description of heterogeneous distribution and complex sealing capacity of carbonate cap rock is essential for prospecting carbonate reservoirs.
But therein lies the basis for an interesting debate, one that is essential to prospects for stemming the accelerating decay of American civic life. .
We are told that inequality is essential; without the prospect of advantage, people wouldn't take risks to create the wealth on which we all depend.
During the three-month visit she met Gandhi, then in prison, and became convinced that his co-operation was essential to any prospect of peace in the subcontinent.
Doing so is essential to Spurs' prospects, as well as their chairman's credibility, but almost equally important is improving the number of goals scored; 55 was the same number as relegated Blackpool, with the England pair Peter Crouch and Jermaine Defoe contributing four each.
It's a machine that urgently needs support from its maker, particularly in a competitive market where a strong identity and sense of purpose is all but essential to its prospects.
That prospect is essential to keeping a wavering Turkey on its pro-western path, too (see article).
But with neither side currently willing to budge on what they perceive as essential security guarantees, the prospect of a swift conclusion to this dispute, and to the wider war that has lain the country to waste, seems as distant as ever.
The major political test is likely to be in the big industrial states that both campaigns consider essential to their electoral prospects, including Pennsylvania, Ohio and Michigan.
Preserving the gender gap is essential to Obama's prospects of reëlection; anything that carries the threat, however slight, of narrowing the gap is a serious matter — hence the speed with which the White House disassociated itself from Rosen.
