ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Information processing for the organization of chemotactic behavior ofPhysarum polycephalum studied by micro-thermography (1987)

Tanaka, H. ; Yoshimura, H. ; Miyake, Y. ; [et al.]

Springer

Protoplasma 138 (1987), S. 98-104

add to mindlist on the mindlist

Details

ISSN: 1615-6102

Keywords: Chemotaxis ; Information processing ; Oscillation ; Physarum polycephalum ; Thermal image camera

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary The spatial and temporal pattern of oscillating temperatures on the cell surface of a plasmodial strand ofPhysarum polycephalum was measured with a sensitive thermal image camera. The longitudinal tension of the strand was studied simultaneously. In the absence of chemical stimulation, the phases of the temperature oscillation observed at various portions of the strand were entrained with almost coincidental phase. The temperature and tension oscillation were synchronized, although the phase difference between them was occasionally changed. With local chemical stimulation, the phase of the temperature oscillation advanced in the portion to which the plasmodium would be induced to migrate. The phases between temperature and tension oscillations then became constant. The mechanism by which the plasmodium processes local information of chemical stimulus to global information for the migration is discussed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01281018

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

High-pressure Raman study of liquid and solid thiophene up to 100 kbar at 300 K (1988)

Shimizu, H. ; Matsunami, N.

Chichester [u.a.] : Wiley-Blackwell

Journal of Raman Spectroscopy 19 (1988), S. 199-201

add to mindlist on the mindlist

Details

ISSN: 0377-0486

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: High-pressure Raman spectra of liquid and solid thiophene C4H4S have been measured up to 100 kbar at 300 K in a gasketed diamond anvil cell. The pressure dependence of intramolecular and intermolecular vibrational modes revealed a solidification point at 6 kbar and a pressure-induced phase transition at 40 kbar. This solid-solid phase transition was identified as the III→IV phase transition by comparison with the intermolecular Raman spectra of the low-temperature solids at atmospheric pressure. The appearance of a dark-red modification of C4H4S, which is irreversibly formed at pressures above 80 kbar with laser irradiation, is discussed.

Additional Material: 3 Ill.