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يعرض 1 - 2 نتائج من 2 نتيجة بحث عن '(( 50 ppm decrease ) OR ((( 50 a decrease ) OR ((( 50 c decrease ) OR ( 50 _ decrease ))))))~', وقت الاستعلام: 0.08s تنقيح النتائج
  1. 1

    Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf) حسب Connor, Izumi

    منشور في 2022
    "…The slope suggests that removal of C as CaCO3, organic matter (CH2O) or gas exchange (FCO2) is occurring with a ratio of ΔCaCO3/(ΔCH2O or FCO2) = 1:2.86. …"
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  2. 2

    Recyclable polyaspartate-coated magnetic nanoparticles for sustainable control of calcite and barite scales in oilfield operations حسب Abdelrahman T. Abdelaal (14674629)

    منشور في 2026
    "…Dynamic tube-blocking tests at 100 °C and 1000 psi further confirm effective scaling suppression for 60 min at 50 ppm, demonstrating that immobilization of PASP on a magnetic carrier preserves its intrinsic inhibitory function while enabling recyclable deployment not achievable with free PASP. …"