The use of hydrogen peroxide as a precursor to improvised explosives has made its detection a topic of critical importance. Chemiresistor arrays comprised of 50 nm thick films of metallophthalocyanines (MPcs) are redox selective vapor sensors of hydrogen peroxide. Hydrogen peroxide is shown to decrease currents in cobalt phthalocyanine sensors while it increases currents in nickel, copper, and ...

all the distributing electric light stations, it has not yet been found practicable to make a lamp which will stand the strain. Hence we have to be content with somewhat indifferent carbon filament lamps. Before the war many operation lamps such as Jessop's were fitted with a Nernst filament; as this is no longer obtainable the lamp is rendered useless. A very excellent substitute for the Nerns...

This paper describes the development of the depth profiling method of ultra trace metal impurities in polytetrafluoroethylene (PTFE) wares based on contamination-free sampling followed by acid-vapor extraction and its application to evaluate the washing method for PTFE wares. A contamination-free sampling process was achieved by scraping the surface of PTFE wares with the cleft face of a silico...

The objective of this trial was to assess the application UVA-LED technology as an alternative source irradiation for photo-Fenton processes, aiming reduce treatment costs and provide a feasible landfill leachate. An optimized combination coagulation with ferric chloride followed by leachate optimized. Three different radiation sources were tested, namely, two conventional high-pressure mercury...