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The dielectric relaxation of water in plant tissue
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
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ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1990
(EN)
EKT historical period
Title
The dielectric relaxation of water in plant tissue (EN)
Creator
Pissis, P (EN)
Description
Thermally stimulated depolarization current (TSDC) measurements on plant leaves and stems of six different species in the temperature range of 77-300 K revealed the existence of three different dispersions. The first dispersion at low temperatures, which is attributed to the relaxation of loosely bound water molecules was studied in detail in an attempt to obtain information on the possible structures of water in plant tissue. Its characteristics differ for various plant tissues, indicating a different organization of water in those plant tissues. The dispersion can be described by a continuous distribution of relaxation times t with both the activation energy W and the pre-exponential factor To in the Arrhenius equation being distributed parameters. The spectrum of W and To was determined for E. globulus and O. europaea leaf samples. The mean values of T and W are larger and that of To smaller than the corresponding values for free (bulk) water. The results favour a model of the organization of water in clusters rather than in multilayers and indicate a stronger binding of water in living systems. © 1990 Oxford University Press. (EN)
Type
journalArticle (EN)
Subject
Free and bound water (EN)
Distribution of relaxation times (EN)
Plant Sciences (EN)
Dielectric relaxation (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
Journal of Experimental Botany (EN)
Language
English
Issued
1990 (EN)
Identifier
http://hdl.handle.net/123456789/10312
ISI:A1990DL86100006 (EN)
684 (EN)
6 (EN)
677 (EN)
10.1093/jxb/41.6.677 (EN)
41 (EN)
0022-0957 (EN)
Publisher
OXFORD UNIV PRESS UNITED KINGDOM (EN)
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