[2] viXra:0909.0053 [pdf] submitted on 28 Sep 2009
Authors: Andrew Beckwith
Comments: 18 pages. Part of a different analogy to bio phyics dielectric constants
explored by the author with Dr. Patrick Xie and Dr. James Claycomb at the Texas
center for super conductivity, Houston, Texas, in early 2002.
We investigate electro-mechanical contributions to the low frequency dielectric
response of biological cells in colloidal suspension. Prior simulations of biological cells
in colloidal suspension yield maximum dielectric constant values about 103 in magnitude
as the frequency of applied electric fields drops below the kHz range. Experimentally
measured relative dielectric values in yeast cells , on the other hand, have maximal
values up to 107 - 108 . We consider both electrical and mechanical energy stored in
cellular suspension and show that low frequency mechanical contributions can give rise
to dielectric constant values of this magnitude.
Category: Physics of Biology
[1] viXra:0909.0019 [pdf] submitted on 6 Sep 2009
Authors: Rafael-Andrés Alemañ-Berenguer, María Gomariz
Comments: 7 pages
The search of materials of biological origin with specific estates of potential
technologic applications whose structure and functions come out from a process of
adaptive evolution experienced by the organisms in extreme environments, is one of
the most active fields in the modern biophysics.
In short, the protein bacteriorhodopsin, acts like a protonic bomb whose photocycle
has demonstrated interesting implications in the technologies of optic storage of
information by means of holographic methods.
In the present work some results of the investigation undertaken by our group are
exposed, consistent mainly in the study of the influence that working conditions (pH,
state of aggregation of the environment, intensity and time of illumination, etc.)
have over photophysical and photochemical states of bacteriorhodopsin as well as in
the tracking of the possible presence of bacteriorhodopsin proteins and xantorhodopsin,
in the salines of Santa Pola (Alicante, Spain).
Category: Physics of Biology