Showing 401 - 403 results of 403 for search '(( a ((linear increase) OR (teer decrease)) ) OR ( a ((largest decrease) OR (larger decrease)) ))', query time: 0.13s Refine Results
  1. 401

    Airborne Sounding Radar for Desert Subsurface Exploration of Aquifers: Desert-SEA: Mission concept study [Space Agencies] by Heggy, Essam

    Published 2024
    “…Our performance analyses suggest that an airborne, nadir-looking sounding radar system operating at a 70-MHz center frequency with a linearly polarized folded-dipole antenna array - enabling a bandwidth (BW) of 50 MHz - and a surface signal-to-noise ratio (SNR) of 85 dB flying at an altitude of 500-2,000 m can map the uppermost water table depths of aquifer systems spanning tens of kilometers at a vertical resolution of 3 m in desiccated terrains to an average penetration depth of 50 m, with a spatial resolution of 200 m. …”
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    Insights into charge carrier dynamics in organo-metal halide perovskites: From neat films to solar cells by Peng, Jiajun

    Published 2017
    “…This tutorial review aims to offer insights into the scope, advantages, limitations and latest developments of the techniques that have been applied for studying charge carrier dynamics in perovskites. We summarize a comprehensive set of measurements including (1) time-resolved laser spectroscopies (transient absorption, time-resolved photoluminescence, terahertz spectroscopy and microwave conductivity); (2) electrical transient techniques (charge extraction by linearly increasing voltage and time-of-flight); and (3) steady-state methods (field-effect transistor, Hall effect and space charge limited current). …”
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