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modulator
Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals
      
To conveniently carry out the pipeline leak experiment in a laboratory, leak acoustic signals are simulated by using the converse piezoelectric effect of a piezoelectric transducer (PZT) cylindrical phase modulator.
      
On the basis of the piezoelectric equations and electromechanical equivalence principle, the transfer function of a PZT cylindrical phase modulator is delivered.
      
A PZT cylindrical phase modulator is designed, and the numerical simulation is conducted.
      
Results prove that the PZT cylindrical phase modulator can effectively simulate leak acoustic emission signals when the frequency is lower than 25 KHz.
      
Ascorbic acid, an effective modulator and regulator of cell metabolism, was shown to induce the production of nitric oxide inE.
      
A control system consisting of an unstable continuous linear part and a pulse-frequency modulator in the feedback circuit is studied.
      
Studies are made of a pulse system consisting of a nonstationary continuous linear portion and a pulse modulator connected to a feedback circuit.
      
A problem of synthesis of a signal at the input of the pulse modulator, which stabilizes the system, is solved.
      
These effects are due to properties of putrescine as a DNA protector and modulator of its topological state.
      
Putrescine as a modulator of the level of RNA polymerase σS subunit in Escherichia coli cells under acid stress
      
An Adamantanone Derivative That Is an Original Modulator of Redox Processes in the Cytochrome P-450 System Can Serve as an Effec
      
Trekrezan as a Modulator of Hemato- and Immunopoieses
      
These data seem to support the recently attributed role of the cerebellum as a modulator of the superior mental and social functions.
      
Cutaneous Afferent Signal as a Modulator of the Heteronymous Influence of Primary Muscle Afferents
      
A small-sized source of short X-ray pulses is described, whose basic components are a three-electrode X-ray tube operating at 30 kV and 0.5 A and a fast GaAs modulator connected coaxially to the tube grid.
      
An average output power of 1.4 kW was achieved for the modulator's burst-mode operation with a number of pulses in a packet of 104at a maximum pulse repetition rate.
      
The use of an optical frequency modulator with a 100% modulation factor and its possibility of continuously changing the light frequency allows the anemometer to operate in a superheterodyne mode.
      
A stroboscopic photorecorder (SP) with a wideband external modulator of the photomultiplier current and manufactured on the basis of a commercial sampling oscilloscope is described.
      
A Transistor-Based Modulator for a Microwave Magnetron
      
 

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