We report the development of useful chemical sensors from chemically converted graphene dispersions using spin coating to create single-layer films on interdigitated electrode arrays. Dispersions of graphene in anhydrous hydrazine are formed from graphite oxide. Preliminary results are presented on the detection of NO(2), NH(3), and 2,4-dinitrotoluene using this simple and scalable fabrication ...

Due to the development of Electric Vehicles, technological developments related zinc-air batteries have gained importance and attention in recent years. The focus is mainly on challenges electrically rechargeable alkaline electrolytes. main objective this work develop a Zinc-Air Battery (ZnAB). Zinc considered for anode material. Stainless steel mesh with Nickel coating taken activated carbon p...

The articular and growth plate cartilages of osteochondrotic pigs were examined and compared with those from clinically normal animals. Both types of osteochondrotic cartilage showed considerable localised thickening apparently due to a lack of ossification. Histological examination of cartilage lesions demonstrated a breakdown in the normal pattern of chondrocyte maturation. Articular cartilag...

We report on the fabrication and electrochemical impedance characterization of a parallel plate capacitance sensor for ocean water salinity monitoring. The standard printed circuit board PCB fabricated and assembled sensor shows excellent response to changes in salinity with a sensitivity of 3.3 k /PSU. Use of the standard PCB process, necessitated by the requirement of low cost and ease of fab...

Several B lined ionization chambers with and without gamma compensation have been developed with cylindrical and parallel plate electrode geometry. These detectors have been developed after extensive studies on the optimization ofthe neutron and gamma sensitivities, the voltage /current (V/I) characteristics and the response of the detectors as a function of neutron flux. The reliability and lo...

PURPOSE To evaluate the fixation strength at the interface between the Kerboull-type plate and bone cement in 6 experimental conditions. METHODS Experimental materials comprised a simulated acetabular block, a simulated Kerboulltype plate, a pressuriser cover, a pressuriser arm, and bone cement. The simulated Kerboull-type plate was placed on the simulated acetabular block, with the pressuris...

An electrode system to study the mechanism of fine microgram powder sulfide mineral dissolution was developed by using a relatively simple method that enables the attachment of micrograms of fine powder to a platinum plate surface. This system yields highly reproducible results and is sensitive compared with conventional electrode systems for various sulfide minerals such as pyrite, chalcopyrit...

In this paper, a novel method for respiratory monitoring is presented. The method is based on Trichel pulses (TPs) using a simple field ionization sensor which consists of a needle electrode and a plate electrode. Experiments have been conducted to demonstrate that different respiratory patterns, including normal, ultra-fast, deep breaths, and apnea could be easily monitored in real time by det...

In this study a device for automatic electrochemical analysis was designed. A three electrodes detection system was attached to a positioning device, which enabled us to move the electrode system from one well to another of a microtitre plate. Disposable carbon tip electrodes were used for Cd(II), Cu(II) and Pb(II) ion quantification, while Zn(II) did not give signal in this electrode configura...

The formation and disappearance of ice changes will cause the change of its capacitance, we can use this features of air, ice and water has different capacitance under different temperature to measure the ice thickness. The capacitance sensor is designed based on this theory that can measure the ice thickness in the harsh environment more effective. Based on the finite element simulation softwa...