Abstract: Developing highly-selective humidity sensors with a wide detection range and negligible hysteresis remains a critical challenge for practical implementations. In this study, the polyethylene ...

In order to provide an environmentally friendly, stable, and low-cost power supply for the hydrogen production system, this paper proposes a composite hydrogen production power supply system based on ...

The government shutdown is triggering a wave of closures of Head Start centers, leaving working parents scrambling for child care and shutting some of the nation’s neediest children out of preschool.