National Highways of Pakistan (پاکستان کی قومی شاہراہ) are a network of toll highways in Pakistan, which are owned, maintained and operated by the National Highways Authority under the Ministry of Communications.
NIOSH air filtration rating refers to the publications of National Institute for Occupational Safety and Health (NIOSH) of US government pertaining to respirators and masks worn to filter contaminated air, regardless of cause.
The Nokia N95 (N95-1, internally known as RM-159) was a smartphone produced by Nokia as part of their Nseries line of portable devices and released in March 2007.
A respirator is a device designed to protect the wearer from inhaling particulate matter, including airborne microorganisms, fumes, vapours and gases.
A surgical mask, also known as a procedure mask, is intended to be worn by health professionals during surgery and during nursing to catch the bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose.