We report experimental and numerical results on noise-enhanced synchronization of two coupled chaotic oscillators. Enhanced synchronization is achieved through superimposing small-amplitude Gaussian noise on a common system parameter of the two chaotic oscillators. A resonancelike behavior is found: at an optimum level of noise, maximum synchronization is attained. The simulations show that the...

The chromatographic baseline was converted to power spectrum by Fourier transform to show the frequency dependence of noise. The spectral analysis of chromatographic baseline was made under various experimental conditions for high-performance liquid chromatography with electrochemical detection (HPLC-ECD). From the spectral analysis, it was found easily that a system using a small stroke pump a...

The shape of action potentials invading presynaptic terminals, which can vary significantly from spike waveforms recorded at the soma, may critically influence the probability of synaptic neurotransmitter release. Revealing the conductances that determine spike shape in presynaptic boutons is important for understanding how changes in the electrochemical context in which a spike is generated, s...

The electrochemical noise method (ENM) has previously been employed to monitor the corrosion of steel reinforcement in concrete. development solid-state Ag/AgCl-based probes and dedicated monitoring technology (ProCoMeter) now offers a wider range ENM configurations. present study involves laboratory investigation three mortar samples containing bars varying additions chloride, with view future...

近年、溶融亜鉛めっき鋼および耐候性鋼は、コンクリートの補強筋としての適用性が検討されている。これら鋼材の表層に形成された亜鉛めっき膜や保護性錆には大気中での高耐食性が知られているが、鋼材のコンクリート中での電気化学的挙動に対する表層皮膜の影響には未解明な点も多い。本報では、各鋼材のコンクリート中での防食機構・腐食進行プロセスを電荷挙動に基づき把握するため、電気化学ノイズ（EN）の測定や統計・ウェーブレット解析に基づき腐食速度や腐食形態を評価した。鋼材表面の腐食状態およびEN解析の結果から、溶融亜鉛めっき鋼および耐候性鋼は、同一条件下で磨き丸鋼に比べ腐食進展が遅く、耐食性が期待できることがわかった。