Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add filters








Year range
1.
Rev. colomb. ciencias quim. farm ; 45(1): 21-34, ene.-abr. 2016. ilus, tab
Article in Portuguese | LILACS | ID: lil-791289

ABSTRACT

O desempenho de sensores fotoeletroquímicos, baseados no elétrodo Ti/TiO2 (sendo um exemplo de modelagem o sensor de hidrazina), foi descrito matematicamente e o respectivo modelo foi analisado por meio de teoria de estabilidade linear e análise de bifurcações. As condições do melhor desempenho destes sensores, bem como as de instabilidades oscilatória e monotônica, foram inferidas na base da análise do modelo.


The work of photoelectrochemical sensors, based on the Ti/TiO2 electrode (being an example for the modeling the hydrazine sensor), was described mathematically and the respective model was analyzed by means of linear stability theory and bifurcation analysis. The best response condition for this sensor, as also, the oscillatory and monotonic instabilities requirements, were inferred, basing on the model´s analysis.

2.
Rev. colomb. ciencias quim. farm ; 44(1): 5-15, ene.-jun. 2015. ilus, graf, mapas, tab
Article in Spanish | LILACS | ID: lil-753571

ABSTRACT

En este trabajo se desarrolló y se analizó, por medio de la teoría de estabilidad lineal y del análisis de bifurcaciones, el modelo matemático con que fue descrito el desempeño de nanopartículas de los derivados de níquel (solas y en compositos con el polímero conductor) en la determinación de metanol en el medio alcalino. Mediante el modelaje matemático, se derivaron las condiciones de estabilidad del estado estacionario, e inferidas las causas generales del comportamiento oscilatorio y monotónico. Los resultados del modelaje se compararon con los datos experimentales.


In this work, the mathematical model for the electroanalytical action of Ni-containing nanoparticles (by themselves and in a composite with a conducting polymer) in electrochemical qualitative and quantitative methanol detection in alkaline media is developed and analyzed by using of linear stability theory and bifurcation analysis. By the mathematical modeling, the steady-state stability conditions (the most exact sensing action requirements) and the causes for oscillatory and monotonic instabilities are derived. The result of the modeling is compared with the experimental data.

SELECTION OF CITATIONS
SEARCH DETAIL