جستجوی مقالات مرتبط با کلیدواژه « food security » در نشریات گروه « شیمی »

The possibility of theacrine electrochemical determination has been evaluated from the theoretical point of view. The correspondent mechanism has been suggested, and the correspondent model, developed and analyzed by means of linear stability theory and bifurcation analysis. It was verified that theacrine may be electrochemically detected in neutral media over the polymers of the compounds, belonging to the quinone-hydroquinone system, serving as mediator of electrons and protons transfer. The analytical signal has to be clear and easily interpreted. The possibility of oscillatory and monotonic instabilities has also been detected.

The possibility of use of conducting polymer (CP), saturated by radical growth centers, as an electrode modifier for carbendazim electrochemical detection has been evaluated by mechanistic way. A mechanism of its electrochemical transformation has been suggested and two mathematical models for oxidation and reduction stages were developed and analyzed by means of linear stability theory and bifurcation analysis. It was proved that, despite of the mechanism´s hybrid character, the conducting polymer, saturated with radical sites, may be an excellent electrode modifier for carbendazim electrochemical detection. The possibility of the oscillatory behavior in this system has also been verified, and it may be possible on both radical formation and recombination stages, being caused by surface and electrochemical factors.