mrs method is one of the new geophysical methods that directly detects the groundwater. by using this method, one can determines some parameters of aquifer (porosity, permeability and transmissivity). the purpose of this research is the application of mrs method in the conductive ground. combination of mrs and rs method is used for better detection of the aquifer in the region of abyek located ...

The effects of noise on phase synchronization (PS) of coupled chaotic oscillators are explored. In contrast to coupled periodic oscillators, noise is found to enhance phase synchronization significantly below the threshold of PS. This constructive role of noise has been verified experimentally with chaotic electrochemical oscillators of the electrodissolution of Ni in sulfuric acid solution.

Cr2Nb alloys are potential candidates for high-temperature structural materials. The influence of different mechanical alloying parameters (milling time) and sintering processes were studied. After observation by scanning electron microscope (SEM), nano powders characterized then sintered spark plasma (SPS). Electrochemical noise (EN) tests also conducted in order to study the electrochemical b...

An enhanced nonlinear PID (EN-PID) controller that exhibits the improved performance than the conventional linear fixed-gain PID controller is proposed in this paper, by incorporating a sector-bounded nonlinear gain in cascade with a conventional PID control architecture. To achieve the high robustness against noise, two nonlinear tracking differentiators are used to select high-quality differe...

Electrochemical noise data is commonly used to monitor corrosion of metals in various environments. In this work we use recurrence plots to study electrochemical noise time series of stainless steel AISI 316 samples immersed in mildly corrosive electrolyte. It has been found that current and potential time series reveal different information. Recurrence quantification analysis of current time s...

Aperiodic stochastic resonance in an electrochemical system with excitable dynamics is characterized in experiments and simulations. Two different spike trains, one with stochastic and the other with chaotic interspike intervals, are imposed on the system as subthreshold aperiodic signals. Information transmission is quantified by the cross correlation between the subthreshold input signal and ...

Single nanoparticle (NP) electrochemical measurements are widely described, both theoretically and experimentally, as they enable visualization of the electrochemical signal of a single NP that is masked in ensemble measurements. However, investigating the behavior of individual NPs using electrochemical signals remains a significant challenge. Here we report experiments and simulations demonst...

In this paper, the level of corrosion and the corrosion rate of 304 stainless steel induced by sulfatereducing bacteria were studied using electrochemical noise. The noise data were analyzed by time domain and frequency domain combined with the observations of optical microscope. And the corrosion was divided into four categories: passivation, pitting induction period, pitting and uniform corro...

Department of Chemistry and Chemica University, Ithaca, New York 14853, USA. E Department of Materials Science and Eng Ithaca, New York 14853, USA School of Chemical and Biomolecular En Ithaca, New York 14853, USA. E-mail: laa25 † Electronic supplementary information characterization data, electrochemical im images. See DOI: 10.1039/c6sc01813k ‡ Present address: 3M Company, Saint Pa Cite this: ...

Redox-active solids with accessible porosity are currently in the focus of materials research due to their numerous and prevailing applications like in sensing, as corrosion inhibitors, in organic synthesis, heterogeneous catalysis and last but not least for electrochemical energy storage e.g. in the form of supercapacitors. Examples include nanostructured transition metal oxides like RuO2 or M...