Journal of Research of the National Bureau of Standards, Volume 85U.S. Department of Commerce, National Bureau of Standards, 1980 |
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... analysis . Liqu nitrogen was then added to a source cold finger which fur- ther reduced the pressure to less than 1 × 10 ' torr . Becaus the thallium ionizes at a very low temperature ( about 700 ° C ) a pyrometer cannot be used to ...
... analysis . Liqu nitrogen was then added to a source cold finger which fur- ther reduced the pressure to less than 1 × 10 ' torr . Becaus the thallium ionizes at a very low temperature ( about 700 ° C ) a pyrometer cannot be used to ...
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... analysis which contained a statement of isotopic purity as well as a semiquantitative spectrographic analysis . The chemical analysis indicated that most elemental impurities could be present at levels up to 0.1 percent and that silicon ...
... analysis which contained a statement of isotopic purity as well as a semiquantitative spectrographic analysis . The chemical analysis indicated that most elemental impurities could be present at levels up to 0.1 percent and that silicon ...
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... analysis by IDSSMS . Additional aliquots contain- ing 2 mg of thallium were taken for the analysis of mercury and bismuth by atomic absorption spectrometry . Table 3 shows the results of these analyses as well as that of a sample of ...
... analysis by IDSSMS . Additional aliquots contain- ing 2 mg of thallium were taken for the analysis of mercury and bismuth by atomic absorption spectrometry . Table 3 shows the results of these analyses as well as that of a sample of ...
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... analysis by thermal ionization mass spectrom- etry . The thallium found in the soluble portion ( in mmol ) was added to the thallium determined gravimetrically to yield the total thallium in the sample . The results of this analysis are ...
... analysis by thermal ionization mass spectrom- etry . The thallium found in the soluble portion ( in mmol ) was added to the thallium determined gravimetrically to yield the total thallium in the sample . The results of this analysis are ...
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... analyses of the 20,T1 and 205TI as a precaution against the possibility of contamination from source parts, although ... analysis of the ratio determination. This increased uncertainty was used to take into account any possible biases ...
... analyses of the 20,T1 and 205TI as a precaution against the possibility of contamination from source parts, although ... analysis of the ratio determination. This increased uncertainty was used to take into account any possible biases ...
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Common terms and phrases
acid aerosol alloy aluminum analysis analytical anode atomic atomic weight building Bureau of Standards calculated calibration calorimeter cell Chem chemical chromospheric Conf constant coulometer croconate cryogenic crystal density detector determined developed discussed dosimetry effects electrical electron energy enthalpy of solution equation error evaluation experimental factors Faraday constant figure fire incident frequency function heat hydrogen ionization isotopic J. L. Bryan Key words laboratory laser linear magnetic malononitrile mass materials measurements ment method molal molecular National Bureau NBSIR neutron observed obtained optical Order from NTIS paper parameters particle percent performance Phys physical polymer potentiostat pressure Proc procedure Publ radiation range ratio reaction sample scattering silicon smoke detectors solar Spec spectra spectroscopy structure superconducting surface suspended coil techniques Technology temperature thallium thermal tion uncertainty values voltage weight x-ray
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Page 425 - Building Science Series — Disseminates technical information developed at the Bureau on building materials, components, systems, and whole structures. The series presents research results, test methods, and performance criteria related to the structural and environmental functions and the durability and safety characteristics of building elements and systems.
Page 509 - Provides quantitative data on the physical and chemical properties of materials, compiled from the world's literature and critically evaluated.
Page 232 - At the Institute for Computer Sciences and Technology of the national Bureau of Standards...
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Page 425 - A special series of interim or final reports on work performed by NBS for outside sponsors (both government and non-government). In general, initial distribution is handled by the sponsor; public distribution is by the National Technical Information Services (Springfield, Va. 22161) in paper copy or microfiche form.
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Page 71 - NIST pursuant to the Federal Property and Administrative Services Act of 1949 as amended, Public Law 89-306 (79 Stat. 1127), and as implemented by Executive Order 11717 (38 FR 12315, dated May 11, 1973) and Part 6 of Title 15 CFR (Code of Federal Regulations).