Herein we describe the development, characterization and application of an electrochemical sensor based on the use of Nafion/MWCNT-modified screen-printed carbon electrodes (SPCEs) for the voltammetric detection of the anti-tuberculosis (anti-TB) drug ethambutol (ETB). The electrochemical behaviour of the drug at the surface of the developed Nafion/MWCNT-SPCEs was studied through cyclic voltamm...

The first-row transition metals (TMs) are applied to induce the assembly of small molybdenum clusters (SMCs) in the molybdenum/TM/phosphate system, and eight SMC-based compounds are synthesized: [(V(2)O(2))(H(2)PMo(8)V(4)O(40))]·2(en)·12H(2)O (1), [CrMo(6)O(18)(OH)(6)]·1.5(H(2)en)·5H(2)O (2), [MnMo(12)O(24)(OH)(6)(HPO(4))(2)(PO(4))(6)]·7(H(2)en)·6H(2)O (3), {[Co(H(2)O)](2)[CoMo(12)O(24)(OH)(6)(...

Nickel or Cobalt-based superalloys represent an important class of engineering materials, finding widespread application in critical components within the gas turbine engines used for jet propulsion and electricity generation. This research aimed at frequency analysis transients electrochemical noise Waspaloy Ultimet superalloys, immersed 3.5 wt.% H2SO4 NaCl solutions two different temperatures...

Electrochemical seismic sensors are key components in monitoring ground vibration, which are featured with high performances in the low-frequency domain. However, conventional electrochemical seismic sensors suffer from low repeatability due to limitations in fabrication and limited bandwidth. This paper presents a micro-fabricated electrochemical seismic sensor with a force-balanced negative f...

Combining specific recognition capabilities with the excellent spatiotemporal resolution of small electrodes represents a promising methodology in bioanalytical and chemical sensing. In this paper, we report the development of reproducible electrochemical, aptamer-based (E-AB) sensors on a gold microelectrode platform. Specifically, we develop microscale sensors (25 μm diameter) for two represe...

Study for improving the coded speech by tight framelet packet transform In this paper we propose to study the performance of a new time-frequency representation called the tight framelet packets transform in speech coding. For this, we performed a comparative study with the wavelet packets transform. Performance evaluation was done using various objective criteria : the coding gain, the normali...