Plant physiology : detection of electro-physiological signals from plants and trees-phase II

Τίτλος

Plant physiology : detection of electro-physiological signals from plants and trees-phase II

Θέμα

Plant physiology

Plant cellular signal transduction

Amplifiers (Electronics)

Δημιουργός

Prodromou, Harris

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1990

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

EED0071

Σύνοψη

The objective of this project was to investigate the possible detection of Electro-Physiological signals transmitted by trees and plants. A sensitive mplification system was designed and used for this purpose, incorporating notch and low pass filters for the rejection of various unwanted frequencies that can have disastrous effects in such systems. The notch filter was used in order to eliminate the 50Hz hum coming from the supply or any other interfering source.
The low pass filter was used to band limit the frequency at a range of 1 Hz - 40Hz because theoretically, signals coming from trees and plants are of very low frequencies. Some very weak signals were observed, using the circuit mentioned above but it is very
difficult to say with certainty that these signals were in fact electro-physiological signals coming from plants.
Further work is recommended on the matter and the author hopes that next years' student,
who will be working on the same subject, achieves to prove the existence of such Signals.
There may be some truth in the ancient belief that you had to apologize to the spirit of the forest before cutting down a tree.