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noise reduction coefficient, NRC

The average of the sound absorption coefficients of an acoustical material at frequencies of 250, 500, 1,000, and 2,000 Hz, expressed to the nearest integral multiple of 0.05.
References in periodicals archive ?
NRC looks forward to continuing enhancing the strategic cooperation with Sweden through policy dialogue and emergency discussions over the next three years.
Faced with resistance from industry, the NRC found itself in a predicament.
Gunter noted that there is no statutory basis for the NRC to withhold most of its information.
We have very strict rules and take action, hopefully before public health or safety is at risk,'' the NRC spokesman said.
Undeterred, environmentalists pressed an environmental injustice claim with the Atomic Safety and Licensing Board, a panel of judges that reviews all NRC staff decisions.
And Diablo Canyon is just one of nearly a dozen sites where grassroots interveners have rabble-roused the NRC and utilities into fixing defective plants or mothbailing clunkers.
From the time we first submitted our application to license our Church Rock and Crownpoint properties fifteen years ago, the NRC and its Atomic Safety and Licensing Board (ASLB) have examined, and reexamined, HRI's proposed in situ recovery mining projects in great detail," said Dave Clark, President and COO of Uranium Resources, Inc.
Through the private cloud deployment process, Dell Services Federal Government will help the NRC consolidate data centers, replace aging equipment and take advantage of modernized IT services to deliver improved IT performance and an enhanced customer experience.
Steve Candito, CEO of NRC, commented, "We are pleased to welcome OP-TECH to the NRC family.
NRC has taken many steps to prepare its workforce for new reactor licensing reviews, but several key elements of its preparations are still underway.
This suggests that, contrary to the NRC report (NRC 2005) and Braverman et al.
The National Research Council Canada (NRC) recently announced the opening of a new $2-million hydrogen technology environmental chamber (HTEC) at the NRC Institute for Fuel Cell Innovation (NRC-IFCI) on the University of British Columbia campus in Vancouver.