HEPA

high-efficiency particulate air (filter)

HEU

highly enriched uranium

HHS

Department of Health and Human Services

HSC

Homeland Security Council

HVAC

heating, ventilation, and air-conditioning


IAEA

International Atomic Energy Agency

IEEE

Institute of Electrical and Electronics Engineers

IMS

ion mobility spectrometer

IND

investigational new drug

IND

improvised nuclear device

IOM

Institute of Medicine

IPP

independent power producers

IRS

Internal Revenue Service

ISO

independent system operator

IT

information technology

IU

intelligent information unit

IW

information warfare


LAN

local area network

LD50

lethal dose at which 50 percent of the exposed subjects die

LDC

local distribution company

LNG

liquefied natural gas


m2/g

square meters per gram

MANET

mobile ad hoc network

MIT

Massachusetts Institute of Technology

MPC&A

material protection, control, and accounting

MWS

multisensor warning systems


14N

the most common isotope of nitrogen

NARUC

National Association of Regulatory Utility Commissioners

NASA

National Aeronautics and Space Administration

NATO

North Atlantic Treaty Organization

NDEA

National Defense Education Act

NDMS

National Disaster Medical System

NEHRP

National Earthquake Hazards Reduction Program

NEI

Nuclear Energy Institute

NFPA

National Fire Protection Association

NIAID

National Institute of Allergy and Infectious Diseases

NIH

National Institutes of Health

NIOSH

National Institute for Occupational Safety and Health

NIST

National Institute of Standards and Technology



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