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Digitale Medien

Photo-inhibition of cell division and growth in euglenoid flagellates (1968)

Cook, J. R.

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

Journal of Cellular Physiology 71 (1968), S. 177-184

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ISSN: 0021-9541

Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Biologie , Medizin

Notizen: Visible light of moderate intensity causes two and perhaps three types of division inhibition in Euglena gracilis are related cells. Fluorescent light causes a general inhibition of growth and division which is temperature-dependent. Pigmentation or complex organic media partially lifts this inhibition. A second type of inhibition, which is transient, can be caused by either fluorescent or incandescent light, and is found with an irreversibly bleached strain of Euglena grown on a limiting concentration of acetate; this inhibition could not be demonstrated in cells grown on limiting concentrations of glucose.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jcp.1040710209

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Digitale Medien

Benzaldehyde polymerization and copolymerization studies (1965)

Raff, R. ; Cook, J. L. ; Ettling, B. V.

New York : Wiley-Blackwell

Journal of Polymer Science Part A: General Papers 3 (1965), S. 3511-3517

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ISSN: 0449-2951

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: In attempts to homopolymerize benzaldehyde with various ionic and coordination catalysts, or by γ-radiation, only the ionic catalyst BF3 etherate formed a polymeric product. This product was identified as polybenzyl with a degree of polymerization (DP) of 133. Mixtures of benzaldehyde and styrene did not copolymerize under γ-irradiation, but yielded only polystyrene. With a BF3 etherate catalyst, however, mixtures of styrene and benzaldehyde were found to have copolymerized through the carbonyl group of the latter, and a 50 : 50 styrene-benzaldehyde monomer mixture yielded an 80:20 styrene-benzaldehyde copolymer with a DP of 139.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pol.1965.100031015

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