Purpose: The objective was to evaluate the water quality based on physical and chemical parameters in different quadrants of an urban wetland correlate variables that may show possible natural anthropogenic polluting sources. Theoretical framework: Wetlands are essential ecosystems for maintenance ecological balance, biodiversity organisms, reserves. Studies wetlands important understanding the...

the running status of it can be more comprehensive judged through acquisition and analysis of vibration signal for water pump rotary machinery. Therefore, the collection of vibration signal is the key to monitor equipment running status and diagnose faults. This paper introduces water pump fault diagnosis system based on DSP and wavelet transform, and the system can realize water pump vibration...