• About Signals' Spectrum 

      Grigorescu, Luiza; Oproescu, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2010)
      Due to this Fourier series exclusive interpretation applied to periodical signals, which shows that a stationary harmonic signal with a single pulsation  cannot contain components of other pulsations but its own pulsation ...
    • The Emfi Material and their Use 

      Grigorescu, Luiza; Diaconescu, Ioana (Universitatea "Dunărea de jos" din Galați, 2010)
      ElectroMechanical Film (EMFi) is a thin, plastic material that can be utilized as a sensor and actuator. EMFi is quite new material in the field of ultrasonics and has favorable properties like good matching to air ...