Polycyanurate Networks with Enhanced Segmental Flexibility and Outstanding Thermochemical Stability

2012 ◽  
Vol 45 (24) ◽  
pp. 9707-9718 ◽  
Author(s):  
Andrew J. Guenthner ◽  
Matthew C. Davis ◽  
Michael D. Ford ◽  
Josiah T. Reams ◽  
Thomas J. Groshens ◽  
...  
Keyword(s):  
Segmental Flexibility ◽  
Thermochemical Stability

Use of EDS mapping to characterize thermochemical stability of fibers in intermetallic matrix composites

1992 ◽  
Vol 50 (1) ◽  
pp. 160-161
Author(s):  
John R. Porter
Keyword(s):  
Spatial Information ◽  
Beam Current ◽  
Fiber Types ◽  
Ceramic Fibers ◽  
Dye Transfer ◽  
Science Center ◽  
Commercial Development ◽  
Nih Image ◽  
Intermetallic Matrix Composites ◽  
Thermochemical Stability

New ceramic fibers, currently in various stages of commercial development, have been consolidated in intermetallic matrices such as γ-TiAl and FeAl. Fiber types include SiC, TiB2 and polycrystalline and single crystal Al2O3. This work required the development of techniques to characterize the thermochemical stability of these fibers in different matrices.SEM/EDS elemental mapping was used for this work. To obtain qualitative compositional/spatial information, the best realistically achievable counting statistics were required. We established that 128 × 128 maps, acquired with a 20 KeV accelerating voltage, 3 sec. live time per pixel (total mapping time, 18 h) and with beam current adjusted to give 30% dead time, provided adequate image quality at a magnification of 800X. The maps were acquired, with backgrounds subtracted, using a Noran TN 5500 EDS system. The images and maps were transferred to a Macintosh and converted into TIFF files using either TIFF Maker, or TNtolMAGE, a Microsoft QuickBASIC program developed at the Science Center. From TIFF files, images and maps were opened in either NIH Image or Adobe Photoshop for processing and analysis and printed from Microsoft Powerpoint on a Kodak XL7700 dye transfer image printer.

scholarly journals Modulation of the Thermochemical Stability and Adsorptive Properties of MOF-808 by the Selection of Non-structural Ligands

2021 ◽  
Vol 33 (4) ◽  
pp. 1471-1476
Author(s):  
Erlend Aunan ◽  
Christopher W. Affolter ◽  
Unni Olsbye ◽  
Karl Petter Lillerud
Keyword(s):  
Adsorptive Properties ◽  
Thermochemical Stability ◽  
Selection Of

Effect of oxygen concentration in air on thermochemical stability of jet fuels

1973 ◽  
Vol 9 (5) ◽  
pp. 385-387
Author(s):  
Ya. B. Chertkov ◽  
R. M. Kolobova
Keyword(s):  
Oxygen Concentration ◽  
Jet Fuels ◽  
Effect Of Oxygen ◽  
Thermochemical Stability

Fragmentations des cétones aliphatiques métastables. II. Compétition entre éliminations de radicaux hydrocarbonés et d'alcanes.

1982 ◽  
Vol 60 (16) ◽  
pp. 2107-2112 ◽  
Author(s):  
Guy Bouchoux ◽  
Yannik Hoppilliard
Keyword(s):  
Molecular Ions ◽  
Low Energy ◽  
Final States ◽  
Energy Channel ◽  
Aliphatic Ketones ◽  
Thermochemical Stability

The fragmentation of the metas table molecular ions of six aliphatic ketones is studied. The ion fragment abundances [M – R•] and [M–RH] (R• being a lateral radical) can be predicted from the thermochemical stability of the corresponding final states. Exceptions to this behavior are found for metastable molecular ions of methylethylketone and methylisopropylketone where it is demonstrated that the lifetime of these ions is too short to permit significant decompositions via the low energy channel after 10−5 s.

scholarly journals Segmental flexibility in Escherichia coli ribosomal protein S1 as studied by fluorescence polarization

1979 ◽  
Vol 6 (6) ◽  
pp. 2363-2379 ◽  
Author(s):  
Y.Gloria Chu ◽  
Charles R. Cantor
Keyword(s):  
Escherichia Coli ◽  
Ribosomal Protein ◽  
Fluorescence Polarization ◽  
Ribosomal Protein S1 ◽  
Segmental Flexibility

Segmental flexibility of immunoglobulin G antibody molecules in solution: a new interpretation

Biochemistry ◽  
1981 ◽  
Vol 20 (24) ◽  
pp. 6842-6852 ◽  
Author(s):  
Douglas C. Hanson ◽  
Juan Yguerabide ◽  
Verne N. Schumaker
Keyword(s):  
Immunoglobulin G ◽  
New Interpretation ◽  
Segmental Flexibility
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