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- Proposed criteria for defining load failure of beams, floors, and roof constructions during fire tests
- load failure, fire test, beam, floor, roof, deflection, plastic deformation
- A brief account is presented of procedures used in development of criteria for defining the point at which fire test specimens fail to sustain load during test. It is proposed that both a deflection of L2/800d and an hourly rate of deflection of...
- Journal of Research of NIST and Predecessor Publications
- Proposed measurement of the beta-neutrino correlation in neutron decay
- beta decay; beta-neutrino correlation; neutron decay; CKM unitarit
- Currently, the beta-neutrino asymmetry has the largest uncertainty (4%) of the neutron decay angular correlations. Without requiring polarimetry, this decay parameter can be used to measure lambda(g(a)/g(v)), test Cabibbo-Kobayashi-Maskawa (CKM)...
- Journal of Research of NIST and Predecessor Publications
- Proposed new electrolytic conductivity primary standards for KCl solutions
- cell constant; conductance; demal; electrolytic conductivity; molal; potassium chloride; primary standards; resistance; specific conductance
- An absolute determination of aqueous electrolytic conductivity has been made for 0.01 molal (m) and 0.1 m potassium chloride solutions, over the temperature range of 0 to 50-degrees-C in 5 degree intervals. A cell with a removable center section...
- Journal of Research of NIST and Predecessor Publications
- Proposed revision of the conventional method of wave-filter design
- Journal of Research of NIST and Predecessor Publications
- Proposed secondary wavelength standards and line classifications in thorium spectra between 0.9 and 3 m
- Classified lines of Th I and Th II; Fourier transform spectra of Th; infrared spectra of Th; spectra of Th; Th I and Th II; thorium spectra; wavelengths of Th
- The spectrum of thorium as emitted by an electrodeless lamp has been recorded by Connes and collaborators by means of Fourier Transform Spectroscopy in the region 0.9 to 3 m. Of the 3100 lines observed, about 1900 are classified as transitions in...
- Journal of Research of NIST and Predecessor Publications
- Prospects for Trace Analysis in the Analytical Electron-Microscope
- Accuracy in Trace Analysis
- Journal of Research of NIST and Predecessor Publications
- Protected thermoelements
- Journal of Research of NIST and Predecessor Publications
- Protection of life and property against lightning.
- Journal of Research of NIST and Predecessor Publications
- Protective Coatings for Titanium
- NBS-NIST Technical Series Publications
- Protective value of nickel and chromium plating on steel
- Journal of Research of NIST and Predecessor Publications
- Protein Crystallization Laboratory
- Photographs; History; Metrology; Women in science; Laboratories
- This image is part of the CARB - Center for Advanced Research in Biotechnology collection. The CARB - Center for Advanced Research in Biotechnology collection contains photos from the center’s research in crystal structures of proteins; structure...
- Historic Images
- $Protein Crystallography by Joint X-Ray and Neutron Diffraction$
- Protein Crystallography by Joint X-Ray and Neutron Diffraction
- A Century of Excellence
- Prover for Liquefied Petroleum Gas Dispensers
- NBS-NIST Technical Series Publications
- Providing Liquid Refrigerants to Research Workers
- NBS-NIST Technical Series Publications
- Provisional pH values for certain standard buffer solutions
- Journal of Research of NIST and Predecessor Publications
- Proximity Fuze T-171
- A major technical development during World War II was the variable time (VT) or proximity fuse which causes a shell, bomb, or rocket to explode when in effective proximity to its target, rather than on impact. One of the problems assigned to the...
- NIST Museum Artifacts
- Proximity Fuze T-4
- A major technical development during World War II was the variable time (VT) or proximity fuse which causes a shell, bomb, or rocket to explode when in effective proximity to its target, rather than on impact. One of the problems assigned to the...
- NIST Museum Artifacts
- Proximity Fuze T-89
- A major technical development during World War II was the variable time (VT) or proximity fuse which causes a shell, bomb, or rocket to explode when in effective proximity to its target, rather than on impact. One of the problems assigned to the...
- NIST Museum Artifacts
- Pseudo-oxocarbons. Synthesis of 2,1,3-bis-, and 1,2,3-tris (dicyanomethylene) croconate salts. New bond-delocalized dianions, croconate violet and croconate blue
- Acid; aromatic; bond-delocalized; croconic; dianion; malononitrile; nonbenzenoid; oxocarbon; salt; synthesis.
- Synthesis and characterization of new bond-delocalized dianions, e.g., 2, 1, 3-bis, 1, 2, 3-tris (dicyanomethylene) croconate salts have been described. The dianions reported represent a new class of aromatic, nonbenzenoid compounds, named...
- Journal of Research of NIST and Predecessor Publications
- Pseudoternary system calcium oxide-monocalcium aluminate(CaO.Al2O3)-dicalcium ferrite(2CaO.Fe2O3)
- Journal of Research of NIST and Predecessor Publications

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