يعرض 1 - 9 نتائج من 9 نتيجة بحث عن '(( 50 ppm (decrease OR increase) ) OR ( k nn (decrease OR increase) ))*', وقت الاستعلام: 0.07s تنقيح النتائج
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    Corrosion Inhibition of Mild Steel using Potato Peel Extract in 2M HCl Solution حسب Ibrahim, Taleb

    منشور في 2011
    "…A reasonable corrosion inhibition level was obtained at a concentration of 50 ppm (>70% inhibition efficiency). Nyquist plots from Impedance data showed that upon increasing the PPE concentration, the charge transfer resistance increased and the doubled layer capacitance decreased. …"
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    Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf) حسب Connor, Izumi

    منشور في 2022
    "…Temperature also increases. The pCO2 in surface seawater averaged 458 ± 62 which was higher than the atmospheric value of 412 ppm. …"
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    Recyclable polyaspartate-coated magnetic nanoparticles for sustainable control of calcite and barite scales in oilfield operations حسب Abdelrahman T. Abdelaal (14674629)

    منشور في 2026
    "…<p dir="ltr">Scale formation is a major challenge in hydrocarbon production, leading to decreased efficiency, equipment damage, and increased operational costs. …"
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    The Potential of Lettuce Seed Assay for Sustainable Applied Toxicity Testing حسب Ammar M. S. Abdalla (23752962)

    منشور في 2025
    "…<p dir="ltr">This study was conducted to establish an approach for environmental toxicity assessment by using Effect-Directed Analysis (EDA) to increase the chances of toxicant identification through links between toxicity testing and chemical analysis. …"
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    Software-Defined-Networking-Based One-versus-Rest Strategy for Detecting and Mitigating Distributed Denial-of-Service Attacks in Smart Home Internet of Things Devices حسب Neder Karmous (19743430)

    منشور في 2024
    "…We employed an ML method based on Random Forest (RF), Logistic Regression (LR), k-Nearest Neighbors (kNN), and Naive Bayes (NB) with a One-versus-Rest (OvR) strategy and then compared our work to other related works. …"
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    Trace element composition of size-fractionated suspended particulate matter samples from the Qatari Exclusive Economic Zone of the Arabian Gulf: the role of atmospheric dust حسب Oguz Yigiterhan (14151006)

    منشور في 2020
    "…As expected, we found that Ca was removed in Qatari dust; however, the concentrations (ppm) for most elements actually increased after leaching because the reduction in sample mass resulting from the removal of CaCO<sub>3</sub> by the leach was more important than the loss of metals solubilized by the leach. …"