Ji-tao Zhang

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Two novel chemosensors (2a and 2b) were synthesized by facile condensation of the binding unit (L-histidine) and the fluorophores (anthracene and dansyl groups). Both of them displayed high selectivity and sensitivity towards Fe(3+) over other metal ions in aqueous solution. The sensing mechanism was based on the paramagnetic property of Fe(3+) that would(More)
  • Ji-tao Zhang
  • Proceedings of 2013 2nd International Conference…
  • 2013
The theory and design of a GaAs MESFET oscillator are presented. The oscillator is designed by the technique which utilizes readily available device and circuit Y parameters to predict oscillation conditions, stability, and noise performance. The simulation result shows that the oscillation frequency is 6.58 GHz with 11.392 dBm output power. The phase noise(More)
In order to accurately explore the soil respiration dynamics and its controlling factors of typical vegetation types in the western Songnen Plain, soil respiration rates of Chloris virgata, Puccinellia distans, Phragmites australis and Leymus chinensis communities were measured. The results showed that the diurnal curves of soil respiration rates of the(More)
Impacts of different substrate water potentials (SWP) on leaf gas exchange and chlorophyll fluorescence parameters of greenhouse cucumber during its post-flowering growth stage were analyzed in this study. The results demonstrated that -10 and -30 kPa were the critical values for initiating stomatal and non-stomatal limitation of drought stress,(More)
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