Glossary

N

nitrogen

Na

sodium

NA

numerical aperture

NAA

neutron activation analysis

Nb

niobium

NCMS

National Center for Manufacturing and Science

NCS

Network Communication Standard

Nd

neodymium

NDA

nondisclosure agreement

NDE

nondestructive evaluation

NDIR

non-dispersive infrared spectroscopy

NDP

neutron depth profiling

NDT

nondestructive testing

NDUV

non-dispersive ultraviolet spectroscopy

Ne

neon

NEC

National Electric Code

NESHAP

national emissions standards for hazardous air pollutants

NFOM

near field optical microscopy

NFPA

National Fire Protection Association

Ni

nickel

NIRA

near infrared reflection analysis

NIST

National Institute of Standards and Technology

NMOS

negative channel metal-oxide semiconductor

NMR

nuclear magnetic resonance

NN

neural network

No

nobelium

NP

neptunium

NPN

negative-positive-negative

NPV

net present value

NRA

nuclear reaction analysis

NRE

nonrecurring engineering

NRZ

non-return to zero

NSE

neutral stream etch

NTP

normal temperature and pressure

NTU

nephelometric turbidity units

NVR

nonvolatile residue