Now showing items 41-50 of 67
Synthesis and optical properties of polyethylenimine containing L -proline and optically active thymine derivatives
(John Wiley & Sons, Inc., 1980-05)
Preparation and optical properties of linear polyethylenimine (PEI) containing L -(−)- N -[(−)-2-(thymin-1-yl) propionyl] prolyl group as grafting pendant, [P-(−)Pro-(−)T], and its related monomer and dimer model compounds ...
Circular dichroism of polyethylenimine containing optically active thymine derivatives as grafted pendants
(John Wiley & Sons, Inc., 1980-04)
Optical properties of linear polyethylenimine containing optically active (+)- or (−)-2-(thymin-1-yl)propionyl group as grafted pendant were investigated by circular dichroism (CD) and compared with those of the related ...
The SPE International Award Address—1979. Recent aspects of research in macromolecules
(Society of Plastics Engineers, Inc.Wiley Periodiocals, Inc., 1980-05)
No Abstract.
Bimetallic ruthenium-gold-on-magnesia catalysts: Chemicophysical properties and catalytic activity
(Elsevier, 1980-08)
Bimetallic Ru-Au catalysts supported on MgO were prepared, their atomic composition varying from 100% Ru to 100% Au. Samples were characterized after impregnation and drying at 110 [deg]C and after further reduction by ...
Relativistically parametrized extended-HÜckel calculations. II. Orbital energies of group-IV tetrahalides and tetramethyls
(John Wiley & Sons, Inc., 1980-08)
Relativistically parametrized extended-HÜckel ( REX ) calculations are reported for MX 4 (M = Ti, Zr, Hf, C, Si, Ge, Sn, Pb; X = Cl, Br, I) and for M(CH 3 ) 4 (M = Ti, C, Si, Ge, Sn, Pb). Satisfactory agreement is obtained ...
Analysis of interactions among purified components of the liver microsomal cytochrome P-450-containing monooxygenase system by second derivative spectroscopy
(Elsevier, 1980-11-20)
Second derivative spectroscopy together with the respective difference spectroscopy offers an effective methodical tool to resolve overlapping bands and shoulders into distinct bands at eliminated background absorption. ...
A transient current monitoring and electrode characterization system for a pulsed oxygen electrode
(Elsevier, 1980-05-01)
Non-steady state voltammetry has been applied to membrane electrodes to provide improved sensitivity as well as independence of stirring. This paper describes a new instrumentation system based on complementary metal ...
Cyclopropane hydrogenation on Ru and Ru---Au catalysts
(Elsevier, 1980-01)
The rate of reaction between cyclopropane and hydrogen was measured in a flow system on unsupported Ru, Ru/SiO2, andRu/MgO. The effect of the addition of Au to Ru/MgO was also investigated. The temperature was in the range ...