5 research outputs found
An advanced delay-dependent approach of impulsive genetic regulatory networks besides the distributed delays, parameter uncertainties and time-varying delays
In this typescript, we concerned the problem of delay-dependent approach of impulsive genetic regulatory networks besides the distributed delays, parameter uncertainties and time-varying delays. An advanced LyapunovâKrasovskii functional are defined, which is in triple integral form. Combining the LyapunovâKrasovskii functional with convex combination method and free-weighting matrix approach the stability conditions are derived with the help of linear matrix inequalities (LMIs). Some available software collections are used to solve the conditions. Lastly, two numerical examples and their simulations are conferred to indicate the feasibility of the theoretical concepts
Electroless nano zinc oxideâactivate carbon composite supercapacitor electrode
An electroless deposition process was used to synthesize the nanostructured zinc oxide (ZnO)âactivated carbon (AC) as supercapacitor. The composite oxide was studied by high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction analysis (XRD). The electrochemical performance of the nanocomposite was analyzed through cyclic voltammetry (CV) and AC impedance spectroscopy (EIS) in 0.1Ă M Na2SO4 as electrolyte. A specific capacitance 187Ă FĂ gâ1 at a scan rate of 5Ă mVĂ sâ1 was obtained using cyclic voltammetry (CV) and a nearly rectangular shaped CV curve was observed for the composite oxide. The supercapacitor was quite stable during chargeâdischarge cycling and exhibited constant capacitance during the long-term cycling. It also yielded a specific capacitance 171Ă FĂ gâ1 at 5Ă mAĂ cmâ2 with a high energy density of 21.9Ă WhĂ kgâ1 and 4.2Ă kWĂ kgâ1 of power density. Due to unique structure of prepared ZnOâAC nanocomposite, it is a promising candidate for supercapacitor