Now showing items 51-60 of 70
Synthesis of poly(vinylamine) containing asymmetric nucleic acid base derivatives as grafted pendants
(John Wiley & Sons, Inc., 1983-07)
No Abstract.
Spectroscopic studies of poly(vinylamine) containing optically active thymine derivatives as grafted pendants
(John Wiley & Sons, Inc., 1983-02)
The optical properties of poly(vinylamine) containing optically active (+)- or (−)-2-(thymin-1-yl) propionyl groups as grafted pendants (PT) and the related monomer (MT) and dimer models (DT) were investigated by UV, ...
Theoretical predictions on the response properties of potentiometric gas sensors based on internal polymer membrane electrodes
(Elsevier, 1983)
The appropriate equilibrium expressions and known thermodynamic equilibrium constants are used in calculations on the expected response properties of polymer membrane electrode-based ammonia and carbon dioxide gas sensors. ...
Synthesis and solution properties of poly( trans -5-ethylproline). A slow mutarotating substituted polyproline
(John Wiley & Sons, Inc., 1983-06)
An optically active polypeptide, poly( trans -5-ethylproline) (PT5EP) was synthesized and its solution properties were observed to investigate the conformational changes with various conditions. The trans -5-ethyl ...
Energy deposition in metals by laser-guided discharges
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1983-12)
Experimental and theoretical results are reported concerning energy deposition on metal surfaces by laser-guided discharges (LGD) in argon and nitrogen at atmospheric pressure. These experiments have demonstrated effective ...
Conformational studies of poly( cis -5-ethyl- D -proline)
(John Wiley & Sons, Inc., 1983-06)
Two possible conformations for poly( cis -5-ethyl- D -proline) have been identified and characterized by using combinations of 1 H- and 13 C-NMR, CD, and ORD spectroscopic techniques. Both forms have helical conformations ...
Synthesis and resolution of substituted pipecolic acids
(Elsevier, 1983)
A new general method for the preparation of 2-alkyl-pipecolic acids has been developed. The syntheses of 2-methyl-, 2-benzyl- and cis-6-methylpipecolic acids are described. (-)S- and (+)R-2-methylpipecolic acids were ...
Effects of Temperature and Moisture on Sheet Molding Compounds
(Sage Publications, 1983)
A summary is given on the effects of moisture and temperature on the properties of chopped fiber reinforced sheet molding compounds. The properties surveyed include tensile strength and modulus, compression strength and ...
Synthesis, characterization, and solution properties of 5-ethyl-substituted poly( L -prolines). Synthesis of cis - and trans -5-ethyl- L -proline and optically active poly( cis -5-ethyl- D -proline)
(John Wiley & Sons, Inc., 1983-06)
This article reports a continuation of our work on the substituent effects on the preferred helical conformations and the mutarotation of substituted poly( L -prolines). The size of the substituent has been increased from ...
Alumina-supported triosmium clusters and ensembles: Characterization by high-resolution transmission electron microscopy
(Elsevier, 1983-11)
Structurally defined supported osmium clusters [HOs3(CO)10---O---Al3(CO)12] with the -OH groups of [gamma]-Al2O3. The supported clusters were heated to 200 [deg]C in argon and then reduced in hydrogen at 400 [deg]C, being ...