Hi Jeff,
Thanks for the link.
In the case of Thermal Conductivity Detector (TCD) the filaments (resistor) are heated intentionally by an electric current and the system for monitoring biological activity the heating would result only from the energy released by the bioprocesses.
Yes you are right.
I'll have to cross that bridge. :^)
Best Regards,
Markos
On 16-04-2015 06:30, Jeff Backstrom wrote:
If you're looking for a field-able method for mycobacterium detection, you might look at improvising from the existing MGIT:
Thermal differences on the scale needed for mycobacteria would be very difficult to put into the field. If you insisted on going this route, you could probably fish up something similar to what is used in thermal conductivity detectors for gas chromatography.
In other words, back to the ol' Wheatstone bridge.
--
On Tue, Apr 14, 2015 at 12:02 PM, Markos <markos@c2o.pro.br> wrote:
Hi,
I've been thinking to experiment common temperature sensors (Eg: NTC) to measure microbial activity.
And today I found this paper:
http://blogs.nature.com/spoonful/2011/08/researchers_measure_bacterias.html
Would be possible to use a NTC thermistor, and Arduino for data acquisition, for detecting temperature changes in a medium containing bacteria and nutrients in a DIY approach?
Has anyone had any practical experience with this technique?
Thanks,
Markos
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