This article presents an empirical study of temperature modulation for metal-oxide gas sensors at multiple frequencies ranging from 0.125Hz to 4Hz. Commercial metal-oxide sensors from two manufacturers were exposed to analyte concentrations below their isothermal discrimination threshold over a period of ten days. The results reported in this article indicate that temperature modulation can sig...

With embedded sensors, the structures are capable of monitoring parameters at such critical locations not accessible to ordinary sensors. Recently, fiber optic sensor emerges as one promising technology to be integrated with structures. Embedding of fiber optic sensors into composites and some metals, especially those with low melting points, have been reported. However, all reported embedding ...

There has been limited published work in the United States on temperature profiling of fresh‐cut, bagged leafy greens during their transport, retail storage, and retail display. This study utilized temperature monitors placed in backrooms and display cases at nine supermarkets located in southern California: the Central Coast (Santa Barbara to Los Osos), Greater Los Angeles (Burbank area), and ...

This paper investigates the effect of filling polystyrene foam beads (EPS) on foaming temperature regulation rigid polyurethane (RPUF) composites and describes change process first 400 s reaction for two systems with high low RPUF. Different contents expandable EPS were used to regulate RPUF reduce internal structural defects composite material caused by excessive which is effectively optimized...