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- Pyrolysis of cellulose in a vacuum
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of fluorocarbon polymers
- Fluorocarbon; photoinduced experiments; polymers; pyrolysis
- The thermal decomposition of various fluorocarbon polymers were investigated; volatile products of the decomposition were determined along with the overall rates of volatilization, and from these rates the activation energies were calculated for...
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of linear copolymers of ethylene and propylene
- Ethylene; linear copolymers; propylene; pyrolysis; rate studies
- The rates of volatilization of linear polymers of ethylene and propylene and their copolymers are somewhat characteristic of random degradation in that a maximum occurs in the rate curve for all polymers studied. Increasing amounts of propylene in...
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of monodisperse poly-alpha-methylstyrene
- Degradation; deuterated poly-alpha-methylstyrene; molecular weight; poly-alpha-methylstyrene; pyrolysis; termination; transfer; zip length.
- Pyrolysis of monodisperse poly-alpha-methylstyrene of wide molecular weight range (M:25,000-5,000,000) was studied isothermally under vacuum in the temperature range 240-280 C. Thermogravimetric analysis was used for measuring the rate of...
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of polyamides
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of polyisobutene (Vistanex), polyisoprene, polybutadiene, GR-S, and polyethylene in a high vacuum
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of some polyvinyl polymers at temperatures up to 1,200 °C
- methylstyrene; polymers; polyvinyl; pyrolysis
- A study was made of the thermal behavior in a vacuum of polystyrene, polytetra fluoroethylene, poly (alpha-methylstyrene), polypropylene, polyisobutylene, and poly (methyl methacrylate), when pyrolized at 500, 800, and 1,200 °C. The volatile...
- Journal of Research of NIST and Predecessor Publications
- Pyrolysis of styrene, acrylate, and isoprene polymers in a vacuum
- Journal of Research of NIST and Predecessor Publications
- $Pyrolytic fractionation of polystyrene in a high vacuum and mass spectrometer analysis of some of...$
- Pyrolytic fractionation of polystyrene in a high vacuum and mass spectrometer analysis of some of the fractions
- Journal of Research of NIST and Predecessor Publications
- Pyrometer Laboratory, Room 108, Physics Building, 1905
- Photographs; History; Metrology; Pyrometry; 1900s
- Captions: Annual Reports for: 1904, p. 903; 1908, p. 683; 1909, p. 767-768 By 1921 pyrometric control stations in heavy industry had become "nearly as intricate as a telephone central station," a far cry from the days when high temperatures were...
- Historic Images
- Pyrometric practice.
- Journal of Research of NIST and Predecessor Publications
- Pyrophyllite tetrahedron
- Photographs; History; Metrology; High pressure (Science); Research; 1950s
- A. Pyrophyllite tetrahedron as cut. B. Pyrophyllite tetrahedron with drilled hole to receive the specimen shown, with silver foil contacts and prisms of Pyrophyllite to fill notches at ends of the hole. C. Pyrophyllite tetrahedron, assembled as in...
- Historic Images
- Q-matrix: An Algebraic Formulation for the Analysis and Visual Characterization of Network Graphs
- network measure; network science; resilience classification
- Given an undirected network, we describe a two-dimensional graphical measure based on the connected component distribution of its degree-limited subgraphs. This process yields an unambiguous visual portrait, which reveals important network...
- Journal of Research of NIST and Predecessor Publications
- Quality-control in routine instrumental epithermal neutron-activation analysis of geological samples
- Accuracy in Trace Analysis
- Journal of Research of NIST and Predecessor Publications
- Quantification of toxic-chemicals in selected human-populations
- Accuracy in Trace Analysis
- Journal of Research of NIST and Predecessor Publications
- Quantitating fluorescence intensity from fluorophore: Assignment of MESF values
- cytometry; FITC; fluorescein; fluorescence yield; MESF; microspheres
- A procedure is presented to convert the comparison of measured fluorescence signals into a comparison of fluorescence yields (FY). The fluorescence yield, which is a property of a solution or a suspension, is defined as the product of the...
- Journal of Research of NIST and Predecessor Publications
- Quantitating fluorescence intensity from fluorophore: The definition of MESF assignment
- flow cytometer; fluorescein; fluorescence; MESF; microbeads; quantitation; SRM 1932
- The quantitation of fluorescence radiance may at first suggest the need to obtain the number of fluorophore that are responsible for the measured fluorescence radiance. This goal is beset by many difficulties since the fluorescence radiance depends...
- Journal of Research of NIST and Predecessor Publications
- Quantitating fluorescence intensity from fluorophores: Practical use of MESF values
- emission spectrum matching; extinction coefficient; fluorescein; lymphocyte; MESF value; microbead; pH; quantitative flow cytometry
- The present work uses fluorescein as the model fluorophore and points out critical steps in the use of MESF (Molecules of Equivalent Soluble Fluorophores) values for quantitative flow cytometric measurements. It has been found that emission...
- Journal of Research of NIST and Predecessor Publications
- Quantitation of arsenic species in urine for exposure assessment studies
- Accuracy in Trace Analysis
- Journal of Research of NIST and Predecessor Publications
- Quantitative analysis, with respect to the component structural groups, of the infrared (1 to 2 mu) molal absorptive indices of 55 hydrocarbons
- Journal of Research of NIST and Predecessor Publications

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