منابع مشابه
"galvanotropism" of Roots
1. New experiments, made in such a way to eliminate as completely as possible products of polarization and the migration of such products when formed, have shown that the exhibition of galvanotropic curvature in roots is mainly dependent upon such products, since no curvature appears when they are excluded. 2. The polarization products injure the external layer of cells of the root; this allows...
متن کاملGalvanotropism and "reversal of Inhibition" by Strychnine
The cathodically galvanotropic orientation of nemerteans, Lineus, and the anodic orientation of the gephyrean Echiurus, are reversed by the action of strychnine under conditions such that the typical "reversal of inhibition" induced by this substance is apparent. Nicotine does not give this result. Since it is necessary to assume that the strychnine effect is due to action upon the central gang...
متن کاملGalvanotropism in the Earthworm
In a former paper Kellogg and the writer have described the effects of a galvanic current on the body positions of Lumbricus Ierres~ris. 1 When the current flows transversely through such an animal or piece of one, the muscles respond by unilateral contraction on the cathodal side. The result is to bring the ends of the worm toward the cathode, thus forming a U with the median part nearest the ...
متن کاملOn Galvanotropism and Oscillotaxis in Fish
HERMANN (1885) found that small fish (and fish embryos) and other animals such as tadpoles in a direct current (D.C.) field of a certain density, direct themselves parallel to the current lines, with their heads towards the anode (galvanotropism). On reversing the current all these animals turn 180 and the fish swim to the other electrode (galvanotaxis). This has been confirmed by Blasius & Sch...
متن کاملThe roots of Knowledge and Information science
Knowledge and Information science is rooted in philosophy and its branches are in sociology. This does not impair its interdisciplinary position. In Iran, the name of "LIS" has undergone a little change and called "knowledge & Information Science (KIS)". Through this change, the importance of philosophy in this discipline has reached its highest level. Knowledge science has a great relationship...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1927
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.10.4.551