Accession Number : AD0773461
Title : Solid State Biology, Cellular Water Structure, and Ion Complexing with Application to Navy Medicine.
Descriptive Note : Annual rept. no. 1, Jan 73-Jan 74,
Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA
Personal Author(s) : Cope,Freeman W.
Report Date : 01 JAN 1974
Pagination or Media Count : 18
Abstract : An instrument to measure pulsed nuclear magnetic resonance (NMR) relaxation times of biological potassium (39K) has been constructed. NMR relaxation times of 39K have been measured in muscle, brain and E. Coli bacteria, and has been found to be much shorter than for 39K in free solution, approaching the short values observed for 39K complexed by ion exchange resin. This evidence suggests that potassium ion in cells is associated with fixed charge groups on macromolecules and is not in free solution. Solid state physical analyses of biological systems have suggested that detection of weak magnetic fields (0.5-1.0 gauss) by living organisms may occur by superconductive Josephson junctions constructed of organic molecules, and that piezoelectricity and pyroelectricity may participate in force and temperature detection by nerve receptors. (Author)
Descriptors : *Biophysics, *Nuclear magnetic resonance, *Potassium, *Electrolytes(Physiology), Cells(Biology), Ions, Muscles, Brain, Bacteria, Physiology, Transport properties
Subject Categories : Anatomy and Physiology
Distribution Statement : APPROVED FOR PUBLIC RELEASE