Now showing items 21-30 of 74
Dynamic properties of fatty acid monomolecular films
(Elsevier, 1971-05)
Saturated fatty acids ranging from fifteen to twenty carbons in alkyl chain length were spread as insoluble monomolecular films and compressed continually at constant velocities. As these surface films assume close-packing ...
Effects of K+ on the catalytic and regulatory properties of homoserine dehydrogenase of Pseudomonas fluorescens
(Elsevier, 1971-04-14)
Partially purified homoserine dehydrogenase (-homoserine; NADP+ oxidoreductase, EC 1.1.1.3) isolated from Pseudomonas fluorescens requires K+ for its stability. At 1 mM K+, the apparent first-order rate constant for enzyme ...
Incorporation of ricinoleic acid into glycerolipids
(Elsevier, 1971-11-05)
The coenzyme A thiol ester of ricinoleic acid was synthesized and characterized. Ricinoleoyl-CoA has been tested as an acyl donor in several in vitro systems using rat liver microsomal acyltransferases.It is essentially ...
An infrared study of unordered poly- L -proline in CaCL 2 solutions
(Wiley Subscription Services, Inc., A Wiley Company, 1971-12)
Infrared spectra have been obtained of poly- L -proline in aqueous CaCl 2 solutions. As the salt concentration is increased, the C[bouble bond]O stretching band develops a component at the frequency found in the solid ...
Structure and vibrational assignments for PCl5 : An electron diffraction study
(Elsevier, 1971-04)
Gas-phase phosphorus pentachloride is a trigonal bipyramid with axial bonds 0.104+/-0.01 A (e.s.d.) longer than equatorial bonds. The mean bond lengths are 2.061+/-0.002 A. Amplitudes of vibration were determined, resolving ...
Molecular structure of nitrogen trichloride as determined by electron diffraction
(Elsevier, 1971-10)
Nitrogen trichloride was found to have a bond length of rg = 1.759 +/- 0.002 A and a Cl-N-Cl angle of 107.1 +/- 0.5[deg]. The bond angle is larger than that found in NF3, consistent with the (recently revised) trends ...
The magnetic susceptibility of spinach ferredoxin from 77-250[deg]K: A measurement of the antiferromagnetic coupling between the two iron atoms
(Elsevier, 1971-08-06)
The magnetic susceptibility of oxidized and reduced spinach ferredoxin has been measured over the temperature range 77-250[deg]K. Anomalous behavior is observed in both oxidation states and the data can be interpreted by ...
Optimal operation of a tubular chemical reactor
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1971-12)
A theoretical and experimental study was conducted on the optimal steady state operation of a jacketed, tubular, liquid-phase reactor in which consecutive second-order reactions occurred in turbulent flow. To verify the ...
Normal coordinate analyses of molecules with the amide group
(Elsevier, 1971-01)
Normal coordinate analyses have been performed on molecules with the amide group using force constants transferred from N-methylacetamides and polyamides. The molecules involved were hexamethylenedipropionamide, ...
Assay of glycogen phosphorylase by differential spectropolarimetry
(Elsevier, 1971-09)
A differential spectropolarimetric method has been developed for the measurement of glycogen phosphorylase activity. The reaction course measured in this way was first order, in agreement with results obtained by measuring ...