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Digitale Medien

Protoporphyrin in the Integument of Asterias rubens (1953)

KENNEDY, G. Y. ; VEVERS, H. G.

[s.l.] : Nature Publishing Group

Nature 171 (1953), S. 81-82

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] As part of a survey of marine animals from the point of view of porphyrin content, Asterias rubens has been re-investigated by us, when it was found that the integument contained free protoporphyrin and not hsematoporphyrin. The details of this work will be published elsewhere, but the essentials ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/171081a0

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Digitale Medien

Interaction of CO2 with a series of detached organic filmsProd. No. 1447 (1967)

Slabaugh, W. H. ; Kennedy, G. H.

New York, NY [u.a.] : Wiley-Blackwell

Journal of Applied Polymer Science 11 (1967), S. 179-192

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Details

ISSN: 0021-8995

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: Data obtained from gaseous sorption isotherms of CO2 on eight organic films at three temperatures and three pressures were evaluated for evidences of chemisorption and physical adsorption. The rates of sorption, affected by both temperature and pressure, were analyzed by calculating the perameters of the Elovich equation and those of Barrer's solution of Fick's law for diffusion. Through a consideration of the Elovich parameters, the sorption coefficients, the limiting diffusion coefficients, and the activation energies for diffusion it appears that the rate of interaction of CO2 with these organic films is primarily a diffusion-controlled process.

Zusätzliches Material: 4 Ill.