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Stem water content is an important index of plant water balance. A new method based on changes in ultrasonic properties of stem was used to monitor stem water content in this paper, because the propagation of ultrasonic pulse echo signal and its attenuation characteristics in the material are closely...

A method for wind speed retrieval is developed by applying fitting techniques with the ratio of signal to noise. The method is applied to the wind speed retrieval from the nautical radar images. And we get a correlation coefficient of 0.88 and RMS error of 1.34m/s by comparing the data from the radar...

Tungsten (W) commonly serves as the electrode layer or acoustic reflector layer for the highly columnar growth of AlN piezoelectric thin films used to fabricate film bulk acoustic resonators in power applications. The structure of W film directly influences the texture of AlN thin films above. Moreover,...