Mostrando 1 - 20 Resultados de 895 Para Buscar '"NIST"', tiempo de consulta: 0.37s Limitar resultados
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    por Bartel, Tom
    Publicado 2005
    “…This paper focuses upon the uncertainty of force calibration measurements at the National Institute of Standards and Technology (NIST). The uncertainty of the realization of force for the national deadweight force standards at NIST is discussed, as well as the uncertainties associated with NIST’s voltage-ratio measuring instruments and with the characteristics of transducers being calibrated. …”
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    “…The NIST Materials Science and Engineering Laboratory works with industry, standards bodies, universities, and other government laboratories to improve the nation’s measurements and standards infrastructure for materials. …”
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    “…Congress changed the NBS name to NIST, the OMS facilitates access to the measurement and standards activities of NIST laboratories and programs through the dissemination of NIST products, data, and services. …”
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    por Swyt, Dennis A.
    Publicado 2001
    “…This paper discusses the past, present, and future of length and dimensional measurements at NIST. It covers the evolution of the SI unit of length through its three definitions and the evolution of NBS-NIST dimensional measurement from early linescales and gage blocks to a future of atom-based dimensional standards. …”
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    “…The National Institute of Standards and Technology (NIST) has initiated a program to provide quality-assured infrared absorption coefficient data based on NIST prepared primary gas standards. …”
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    por Beers, John S., Penzes, William B.
    Publicado 1999
    “…The National Institute of Standards and Technology (NIST) interferometer for measuring graduated length scales has been in use since 1965. …”
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    “…The program in fundamental neutron physics at the National Institute of Standards and Technology (NIST) began nearly two decades ago. The Neutron Interactions and Dosimetry Group currently maintains four neutron beam lines dedicated to studies of fundamental neutron interactions. …”
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    “…Two cryogenic radiometers from NIST, one from the Optical Technology Division and the other from the Optoelectronics Division, were compared at three visible laser wavelengths. …”
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    por Marinenko, R. B.
    Publicado 2002
    “…The National Institute of Standards and Technology (NIST) has been involved in the development of standards for microanalysis since the middle of the 1960s. …”
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    “…The development of atomic frequency standards at NIST is discussed and three of the key frequency-standard technologies of the current era are described. …”
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    “…From the early days of neutron scattering measurements at NBS/NIST, magnetic diffraction studies have been a central theme involving many universities, industrial and government labs from around the United States and worldwide. …”
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    por Mighell, Alan D., Karen, Vicky Lynn
    Publicado 1996
    “…The NIST Crystal and Electron Diffraction Data Center builds a comprehensive database with evaluated chemical, physical, and crystallographic information on all types of well-characterized substances. …”
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    “…The unique feature of the NIST approach is to use cables as the parallel links and to use winches as the actuators. …”
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    “…The Cold Neutron Research Facility (CNRF) at the National Institute of Standards and Technology (NIST) Research Reactor (NBSR) is now coming on line, with the first seven experimental stations operational, and more stations scheduled to be installed during 1992. …”
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    “…Following an absolute NIST measurement of the freezing temperature of gold and the adoption of the International Temperature Scale of 1990 (ITS-90), NIST has adopted new measurement scales for the calibration services based on thermal radiometry. …”
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