Now showing items 11-20 of 52
Time–temperature superposition of large-strain shear properties of the ethylene–propylene copolymer system
(Wiley Subscription Services, Inc., A Wiley Company, 1972-02)
The principle of time temperature superposition for some mechanical properties of polymers is well known, particularly where strains are on the order of 1% or less. For large strains the simple data transformation techniques ...
Studies in molecular structure, symmetry and conformation VI. Crystal and molecular structure of 1-aminocyclopentane carboxylic acid monohydrate
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Company Limited ; Springer Science+Business Media, 1972-07)
1-aminocyclopentane carboxylic acid monohydrate is monoclinic: space group P 2 1 / c , a = 11·24, b = 6·27, c = 11·22 Å and β = 97·6 °. The crystal structure was solved by the symbolic addition method and refined to an R ...
Impact tube gas velocity measurement at high temperatures
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1972-09)
No Abstract.
Time-dependent behavior of insoluble monomolecular films: Fatty acids and some derivatives
(Elsevier, 1972-10)
Saturated fatty acids ranging from 15 to 20 carbons in alkyl chain length and some stearic acid derivatives were spread as insoluble monomolecular films and compressed at a constant velocity. As these surface films assume ...
The ubiquinone homologue of the green mutant of Rhodopseudomonas spheroides
(Elsevier, 1972-02-28)
Ubiquinone was isolated from aerobically, semi-aerobically, and photosynthetically grown cells of the green mutant of Rhodopseudomonas spheroides (strain 2.4.1 Ga). The ubiquinone in each case was characterized by its ...
Ethanolamine phosphokinase: Activity and properties during liver development
(Elsevier, 1972-07-13)
The conditions for maximal activity of ethanolamine phosphokinase from rat liver were determined. All of the activity was located in the supernatant fraction after centrifugation at 100 000 x g for 60 min. The enzyme ...
Synthetic inhibitors of galactocerebroside biosynthesis
(Elsevier, 1972-06-19)
1. 1. The brain enzyme which forms galactosyl ceramide ("cerebroside") from UDPGal and hydroxy ceramide was assayed in vitro with a rat brain preparation. Various synthetic substances resembling hydroxy ceramide were tested ...
Normal vibrations of crystalline polyglycine I
(Wiley Subscription Services, Inc., A Wiley Company, 1972-09)
A valence force field has been refined for crystalline polyglycine I using its known antiparallel chain pleated-sheet structure and without replacing the CH 2 group by a point mass. Polyglycine I and four of its isotopic ...
Contact-shifted NMR of spinach ferredoxin: Additional resonances and partial assignments
(Elsevier, 1972-06)
We have extended the study of the contact-shifted resonances in the nmr spectra of oxidized and reduced spinach ferredoxin to lower magnetic field than reported by others. We have found two resonances not observed previously: ...