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DEVELOPMENT
OF EXPERIMENTAL PROCEDURE
Measuring
conditions.
It
is necessary to provide implementation of the three main measuring
conditions:
-
Maximal informativeness of the research object, or, in other
words, establishing conditions for the maximal influence
of the object's parameters upon the gas discharge characteristic.
-
Minimal influence of the measuring process upon the object's
vital activity character, i.e. minimal perturbation action
of the gas discharge elementary processes - electron-ion
attack, ultraviolet radiation, molecular oxygen and ozone.
According to the general quantum-mechanical principles,
any measuring process exerts influence on the object's condition,
therefore in all cases whatsoever it is advisable to reduce
this influence to the minimum.
-
Convenience of the experiments implementation, ergonomy
of the sensors used, perfect working security both for the
patient and for the operator.
Parameters
used for the "GDV"-type devices are selected depending
on the conditions stated above. They are sorted out as a result
of a long theoretical and experimental research.
The
device for the investigation of gas-discharge characteristics.
Developing
devices for the investigation of gas-discharge characteristics
of various object, the main requirements were taken into consideration
as follows:
- High
stability of the voltage parameters;
- Selection
of the optimal discharge forming parameters for several
objects;
- Maximal
data informativeness under minimal influence upon the investigated
object;
- The
reveal of connection between the parameters registered and
the properties of the object investigated;
- Convenience
of the metrological characteristics registration, standardisation
and control possibility;
- Working
convenience, security, ergonomy, and minimal number of disturbances.
According
to the facts stated above, under the discharge development
the subject under study is included in the discharge electric
current circuit, and along the surface of dielectric, covering
one of the electrons, a longitudinal component of high-intensity
electric field is created. The gas discharge developing in
the voltage impulse serves as a kind of intensifier of ultra-weak
emission processes taking place on the object's surface, and,
at the same time, the surface distribution of the discharge
channels depends upon the typography of the object's electro-physical
characteristics.
Thus,
the gas-discharge image represents a complex two-dimensional
figure, which geometrical parameters bear the information
on the object's characteristics. To include such data in the
structure of the complex biophysical experiment the quantitative
processing of the images received is necessary.
Description of the automated complex of images processing
on the basis of computer, as well as of the device for the
liquid-phase objects investigation, is stated in Appendix
3.
GDV
process standardisation »
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