But the deal fell apart because of challenges from BP's partners in TNK-BP.
However, limited experimental data are available to characterize thermal remediation because of challenges associated with high temperature.
And children with disabilities have higher mortality rates – because of medical conditions and because of challenges accessing public services.
But Mr. Klein said the company's results suffered because of "challenges in the PC environment," especially the consumer market.
"The elderly are targeted because of challenges they have," said Paul Gentile, president and chief executive of the CCUA.
There are about 20,000 paper ballots that are uncounted because of challenges by either of the candidates.
That goal isn't always achievable, because of challenges to independence such as a limited income or chronic health problems.
Still, CES are often not adequately considered in decision-making – partly because of challenges in their quantification and economic valuation.
Because of challenges associated with logistics and data analyses uncorrected counts are often used as a proxy for abundance.
Convergys, which also handles telephone inquiries from its clients' customers, said Tuesday that net income fell because of challenges in the billing unit as companies have cut spending.
Also, Senator John McCain of Arizona has been knocked off the ballot in 12 of New York's 31 Congressional districts because of challenges by the state's party establishment.
