In this paper, a quasi-spherical PVDF airborne ultrasonic transducer for three-dimensional (3D) ultrasonic location systems is designed and fabricated using two strips of cylindrical PVDF film. The 3D ...

The excitation and front-end electronics for an ultrasonic transducer array used in an air-coupled NDT system is presented. The main characteristic of the whole system is its wide dynamic range, ...

Rio Tinto’s mammoth Tomago aluminium smelter is reportedly close to collapse, putting some 6000 jobs at risk. The facility, situated in Tomago about 13km west of Newcastle, employs some 1000 ...

这篇综述系统阐述了绿色可持续金属有机框架（MOFs）在废水处理中的光催化应用，重点探讨了以生物基配体、环保金属（如Fe、Al）和绿色溶剂（水、离子液体、超临界CO2 ）为核心的合成策略，揭示了MILs、UiOs和ZIFs等稳定结构对有机污染物（如染料、抗生素）的高效降解机制，为环境修复提供了兼具 ...