N
N&S Necessary and Sufficient (ES&H).
n. o. s. Not otherwise specified. (from 49 CFR)
NA Nucleon area
NA Code North American Code. (from 49 CFR)
NAA NonAttainment Area (from CAA). An area whose ambient air levels exceed federal or state standards.
NAAQS National Ambient Air Quality Standards. (from CAA)
NACA National Advisory Committee for Aeronautics.
NACE National Association of Corrosion Engineers.
NAE National Academy of Engineering
NAG Numerical Algorithms Group
NAL National Accelerator Laboratory (FermiLab). See also FNAL
NALCD North American Linear Collider Detector
NALTA North American Large-scale Time-coincidence Array.
NAMASTE Next generation Atomic, Molecular, and Accelerator Science and Technology Experiments (LCLS)
Named Pipes A reliable form of interprocess communication in which a direct link is established by a server for a client.
nanoPE nanoporous PolyEthylene.
NARA National Archives and Records Administration.
Narrow Pulse Generator See NPG.
NAS National Academy of Sciences.
NAS Network Attached Storage
NASA National Aeronautics and Space Administration
NASA/GSFC National Aeronautics and Space Administration/Goddard Space Flight Center.
National Environmental Policy Act See NEPA.
NB Negative Binomial
NBD Negative binomial distribution
NC Neutral Current
NCA Network Computing Architecture.
NCG NonCommutative Geometry
NCI National Cancer Institute.
NCI Nuclear Control Institute (non-proliferation research), Washington D.C.
NCI Nuclear Cities Initiative
NCM NEPA Compliance Manager.
NCOS NonCommutative Open String theory.
NCP National Contingency Plan.
NCQFT Non-Commutatitive Quantum Field Theories.
NCRP National Council on Radiation Protection.
NCRR National Center for Research Resources (National Institutes of Health).
NCS National Communications System.
NCSA National Center for Supercomputing Applications. A federally-funded organization whose mission is to develop and research high-technology resources for the scientific community.(Illinois).
NCSC National Computer Security Center.
NCXT National Center for X-ray Tomography (ALS).
NCYM NonCommutative Yang-Mills.
ND NaI detector at VEPP-2M, Novosibirsk.
NDA Non-Disclosure Agreement.
NDBD Neutrinoless Double Beta Decay
NDE Non-Destructive Examination.
NDIM Negative Dimensional Integration Method
NDMS National Disaster Medical System.
NDR Naive Dimensional Regularization
NDT Non-Destructive Testing
NE Nuclear Experiment.
NEA Near-Earth Asteroid.
NEAC Nuclear Energy Advisory Committee (DOE) GOV
NEC National Electrical Code.
NECA National Electrical Code Association.
NEG Non-Evaporable Getter (pump).
NEH Near Experimental Hall. (LCLS)
NEHA National Environmental Health Association. See also CHWS.
NEIC National Enforcement Investigations Center. A subdivision of EPA.
NEMA National Electrical Manufacturers Association.
NEO Near-Earth Objects.
NEO New Employee Orientation. (SLAC)
Neoparadoxia Repenningi A member of a small family of large, herbivorous marine mammals that inhabited the northern Pacific coastal region during the Miocene epoch (20 to 10 million years ago). A fossil skeleton was unearthed at SLAC in October 1964, during the excavation for the linear accelerator beam switchyard. Originally called paleoparadoxia, it was reclassified in 2013.
NEPA National Environmental Policy Act. The 1969 federal act which created the requirement for an Environmental Impact Statement for projects involving federal funding.
NERAC Nuclear Energy Research Advisory Committee (DOE). See NEAC.
NERSC National Energy Research Scientific Computing Center. (DOE)
NESHAP National Emission Standards for Hazardous Air Pollutants. (from CAA)
NEST Nuclear Emergency Search Team.
NESTOR Neutrino Extended Submarine Telescope with Oceanographic Research. (Greece).
NetBEUI NetBIOS Enhanced User Interface. An interprocess communications standard developed by IBM. NetBEUI provides network interfaces used by a network operating system (which operates at the presentation layer) to access the session layer of the ISO model. As defined by IBM.
NetBIOS Network Basic Input/Output Subsystem. An interprocess communications standard developed by IBM. NetBIOS provides network interfaces used by a network operating system (which operates at the presentation layer) to access the session layer of the ISO model.
NetBIOS Enhanced User Interface See NetBEUI.
NETC National Emergency Training Center.
NETL National Energy Technology Laboratory. (DOE)
Network A group of machines connected together so they can transmit information to one another. There are two kinds of networks: local networks and remote networks.
Network Address 1) The physical or hardware address of a network interface card. For Ethernet this 48-bit address might be 0260.8C00.7666. The hardware address is used to forward packets within physical network. 2) The logical or Internet address is used to facilitate moving data between physical networks. The 32-bit Internet address is made up of a network number, a subnetwork number, and a host number. Each host computer on the Internet has a unique address. All Internet addresses at SLAC have a network number of 134.79. All Internet hosts have a numeric address and an English-style name. For example, the Internet address for SLAC's IBM 3480 is 134.79.17.41. Its Internet name is SLAC.Stanford.EDU.
Network Basic Input/Output Subsystem See NetBIOS.
Network Operating System See NOS.
NEUL NEULand large-angle neutrino spectrometer.
NEXAFS Near Edge X-ray Absorption Fine Structure.
nEXO next-generation Enriched Xenon Observatory.
NFC Natural Flavor Conserving
NFPA National Fire Protection Association.
NFPA No Fixed Point Automorphisms
NFS Network File System. Protocols developed by Sun Microsystems to allow access to remote files as if they were local. Originally written for Unix but expanded to include PC, MAC and other systems. See also: AFS
NGC New General Catalog of nebulae and star clusters. (Dreyer, Memoirs of the RAS V49, N.1)
NGLS Next Generation Light Source. (LBNL)
NGS Neutrino beam to Gran Sasso
NGST Next Generation Space Telescope
NGT Nonsymmetric Gravitational Theory
NHZ Nominal Hazard Zone.
NIC The Network Information Center. There are many NICs operated by local, regional, and national networks all over the world. Such centers provide user assistance, document service, and training.
NICADD Northern Illinois Center for Accelerator and Detector Development.
NICE Serpukhov nonmagnetic precision spectrometer.
NICER Neutron star Interior Composition Explorer. (NASA)
NIEHS National Institute of Environmental Health Sciences.
NIF National Ignition Facility (LLNL).
NIGMS NIH Institute for General Medical Sciences.
NIH National Institutes of Health.
Nikhef Nationaal Instituut voor Kernfysica en Hoge-Energie Fysica (Amsterdam). As of 1998, renamed National Institute for Subatomic Physics (Nikhef is no longer an acronym)
NIM Normal Incidence Monochromator SSRL
NIOSH National Institute for Occupational Safety and Health.
NIRCam Near InfraRed Camera. (JWST)
NIRNS National Institute for Research in Nuclear Science.
NIRSpec Near InfraRed Spectrograph. (JWST)
NIS Network Information System. A database containing the user names, machine names, and directory names that a Network File System uses to track all machines on a network. Formerly called 'Yellow Pages' (yp).
NIS Network Information Service (Sun). Major components include the ypserv and ypbind daemons started at boot time in the /etc/rc.local script, these daemons handle NIS database communications for both servers and clients.
NIST National Institute of Standards and Technology.
NISUS Near-Infrared Scalable Undulator System.
NJL Nambu-Jona-Lasinio
NLA Next-to-leading Logarithmic Approximation.
NLCTA Next Linear Collider Test Accelerator. A SLAC prototype of a short section of the proposed ILC.
NLDC National Laboratory Directors' Council.
NLL Next-to-leading Logarithmic Level
NLLA Next-to-Leading Logarithmic Approximation
NLO Next-to-Leading Order
NLS Nonlinear Schrรถdinger
NLSP Next Lightest Supersymmetric Particle
NMC Nickel Manganese Cobalt oxide.
NMC New Muon Collaboration
NMC Next Muon Collider
NMI NSF Middleware Initiative.
NMI Non-Maskable Interrupt.
NML New Muon Lab (Fermilab)
NMR Nuclear magnetic resonance.
NMS Network Management Station. The system responsible for managing a portion of a network. The NMS talks to network management agents, which reside in the managed nodes, via a network management protocol.
NMSSM Next to Minimal Supersymmetric Standard Model
NNAC Nonproliferation and National Security Advisory Committee (DOE)
NNI Nearest Neighbor Interaction
NNLL Next-to-Next-to-Leading Logarithmic.
NNLO Next-to-Next-to-Leading Order.
NNMI National Network for Manufacturing and Innovation.
NNSA National Nuclear Security Administration. (DOE)
NNSAC Non-proliferation and National Security Advisory Committee. Also known as NNSA. GOV
NO NonOscillatory
No Observed Effect Level See NOEL.
NOA Notice Of Award. (Stanford)
NOAA National Oceanic and Atmospheric Administration
NOAEL No Observed Adverse Effect Level.
NOAO National Optical Astronomical Observatory. (NSF)
Node Any computer, terminal or peripheral on a network. It is also called a host.
NOEL No Observed Effect Level. The highest dose in an animal toxicity study for which no effect was observed.
NOI Notice Of Intent or Inquiry.
Nonattainment Area See NAA.
Non-ionizing Electromagnetic Radiation Radiation that does not change the structure of atoms but does heat tissue and may cause harmful biological effects. Sources include laser light, microwaves, radio waves, and low-frequency electromagnetic fields from high-voltage transmission lines.
NOPR Notice of Public Ruling.
NORM Naturally Occurring Radioactive Material.
NOS Network Operating System. An operating system specifically designed to manage and control a network or networks and related services.
NOvA NuMi Off-axis ve (electron neutrino) Appearance experiment.
NOVO VEPP 2M NOVOsibirsk VEPP-2M electron-positron storage ring (1.4 GeV Ecm).
NOVO VEPP 4 NOVOsibirsk VEPP-4 electron-positron storage ring (14 GeV Ecm).
NP Noteworthy Practice.
NP New Physics.
NPACI National Partnership for Advanced Computational Infrastructure.
NPAS Nuclear Physics At SLAC.
NPDES National Pollutant Discharge Elimination System. (from CWA)
NPG Narrow Pulse Generator. A test module used to simulate beam pulses for diagnostic purposes.
NPRCS No-Permit-Required Confined Space.
NPS See NPAS.
NPSS Nuclear and Plasma Sciences Society (IEEE).
NQIAC National Quantum Initiative Advisory Committee
NR Non-Rotatable (flanges)
NRAO National Radio Astronomy Laboratory.
NRC Nuclear Regulatory Commission.
NRC National Response Center.
NRC National Research Council, in Washington D.C.
NRDC Natural Resources Defense Council.
NREL National Renewable Energy Laboratory. (DOE)
NREN National Research and Education Network.
NRL Naval Research Laboratory (US)
NRQCD NonRelativistic QCD
NRQED NonRelativistic QED
NRT National Response Team.
NRTL Nationally Recognized Testing Laboratory.
NRY North Research Yard.
ns nanosecond
NS Neveu-Schwarz
NSA National Security Agency.
NSAC Nuclear Science Advisory Committee (DOE)
NSC Nanoscience Safety Committee. (SLAC)
NSCL National Superconducting Cyclotron Laboratory (Michigan State)
NSF National Science Foundation.
NSF National Sanitation Foundation. ENVIRO
NSFNET The national backbone network, funded by the National Science Foundation and operated by the Merit Corporation, used to interconnect regional networks such as WESTNET to one another.
NSLS National Synchrotron Light Source (BNL).
NSNS National Spallation Neutron Source (ORNL).
NSPS New Source Performance Standards. (from CAA and CWA)
NSR Neveu-Schwarz-Ramond
NSRC National Synchrotron Research Centre. (Thailand)
NSRRC National Synchrotron Radiation Research Center (Taiwan).
NSS Neutron Spallation Source.
NSS Nuclear Science Symposium.
NSVZ
Novikov-Shifman-Vainshtein-Zakharov.
NT
Windows NT is a 32-bit operating system that supports preemptive multitasking. There are two versions of Windows NT: a network server and a workstation.
NTF No Trouble Found.
NTF Neutron Therapy Facility
NTG Neue Technologien GmbH. (German engineering company)
NTIA National Telecommunications Information Administration.
NTIS National Technical Information Service (U.S. Dept. of Commerce, Springfield, VA).
nTOF neutron Time-Of-Flight facility. (CERN)
NTP Need To Proceed
NTP National Toxicology Program. A part of USPHS.
NTP
Network Time Protocol
NTS Non-compliance Tracking System.
Nu The Greek letter (n). See TUNE.
Nuclear Instrumentation Methods See NIM.
Nuclear Physics Injector See NPI.
NUFO National Users Facilities Organization.
NuMI NeUtrinos at the Main Injector. An experiment that fires neutrinos from the Main Injector at FermiLab toward an underground target 730 km (about 430 miles) away in Soudan, Minnesota.
NuPECC Nuclear Physics European Collaboration Committee.
NuPNET Nuclear Physics NETwork.
NuSAG Neutrino Scientific Assessment Group.
NUST National University of Sciences and Technology. (Pakistan)
NuSTAR Nuclear Spectroscopic Telescope ARray.
NUSX Mont Blanc NUSEX underground detector.
NUT Newman-Unti-Tamburino
NuTeV NeUtrinos at the TEVatron experiment (FNAL).
NVBL National Virtual Biotechnology Laboratory (DOE)
NWPA Nuclear Waste Policy Act of 1982.
NZE Near Zero Emittance.
