Kinetic Carbon Isotope Effects in the Decarbonylation of Lactic Acid of Natural Isotopic Composition and of [1-14C] Lactic Acid

1994 ◽  
Vol 30 (4) ◽  
pp. 333-347 ◽  
Author(s):  
M. Zieliński ◽  
A. Zielińska ◽  
H. Papiernik-Zielińska ◽  
G. Czarnota ◽  
G. Kasprzyk ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Isotopic Composition ◽  
Carbon Isotope ◽  
Isotope Effects ◽  
Natural Isotopic Composition

Carbon-13 and oxygen-18 isotope effects in the decarboxylation of nicotinic acid of natural isotopic composition

1998 ◽  
Vol 230 (1-2) ◽  
pp. 71-75
Author(s):  
M. Zieliński ◽  
A. Zielińska ◽  
H. Papiernik-Zielińska ◽  
J. A. McKenzie ◽  
S. Bernasconi ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Nicotinic Acid ◽  
Isotope Effects ◽  
Natural Isotopic Composition

The electrical resistivity of lithium-6

1961 ◽  
Vol 263 (1314) ◽  
pp. 407-419 ◽  
Keyword(s):  
Electrical Resistivity ◽  
Isotopic Composition ◽  
Specific Heat ◽  
Room Temperature ◽  
Natural Isotopic Composition ◽  
Square Roots ◽  
Conduction Electrons ◽  
Ionic Mass ◽  
Theoretical Predictions ◽  
Electrical Resistivities

The electrical resistivities of lithium -6 and lithium of natural isotopic composition have been studied between 4°K and room temperature. In addition, their absolute resistivities have been carefully compared at room temperature. These measurements show that the effect of ionic mass on electrical resistivity agrees with simple theoretical predictions, namely, that the properties of the conduction electrons in lithium do not depend on the mass of the ions, and that the characteristic lattice frequencies for the two pure isotopes are in the inverse ratio of the square roots of their ionic masses. A comparison with the specific heat results of Martin (1959, 1960), where the simple theory is found not to hold, indicates the possibility that anharmonic effects are present which affect the specific heat but not the electrical resistivity.

Carbon isotope effects in the open-system Fischer–Tropsch synthesis

2007 ◽  
Vol 71 (18) ◽  
pp. 4474-4487 ◽  
Author(s):  
Yuri A. Taran ◽  
George A. Kliger ◽  
Vyacheslav S. Sevastianov
Keyword(s):  
Carbon Isotope ◽  
Open System ◽  
Isotope Effects ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis
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