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ppm decrease » _ decrease (Expand Search)
μ decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (Expand Search)
ng decrease » _ decrease (Expand Search)
10 μ » 10 μg (Expand Search), 10 _ (Expand Search), 10 i (Expand Search)
50 ng » 10 ng (Expand Search), 50 μg (Expand Search)
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Surface Roughness Modelling of the Micromechanically Patterned CNT Forests
Published 2023“…Methods: Experiments were conducted using a CNC machine to pattern onto CNT Forests using specific parameters, such as 1000, 1500, and 2000 rpm (spindle speed) with feed rates of 1, 5 and 10 mm/min. The step size was kept fixed at 1 μm for each level of the patterning pass. …”
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The separation of emulsified water/oil mixtures through adsorption on plasma-treated polyethylene powder
Published 2021“…The efficiency of the plasma-treated LDPE powder in oil removal was found to be dependent on the initial oil concentration. It decreased from 96.7% to 79.5% as the initial oil concentration increased from 75 ppm to 200 ppm. …”
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Development of pH-Controlled Aluminum-Based Polymeric Gel for Conformance Control in Sour Gas Reservoirs
Published 2020“…Moreover, the system showed good stability in saline conditions with NaCl concentration of up to 50,000 ppm. Scanning electron microscopy of freeze-dried samples proved the uniform distribution of colloidal crosslinkers and showed sheets wrapping around the colloidal particles. …”
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Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf)
Published 2022“…Its values in the Gulf ranged from −50 to −310 μmol kg−1 implying CaCO3 precipitation. …”
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Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf)
Published 2022“…Its values in the Gulf ranged from −50 to −310 μmol kg−1 implying CaCO3 precipitation. …”
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Mercury pollution in doha (Qatar) coastal environment
Published 1994“…1). Organic Hg (0.6 ng L?1) contributed only 5.0% of total Hg. Mercury showed a strong tendency to be associated with suspended matter in Doha coastal waters, as it represented about 73.0% of the total. …”
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Optimization of performance and emission characteristics of CI engine fueled with Jatropha biodiesel produced using a heterogeneous catalyst (CaO)
Published 2020“…The optimum performance and emission characteristics (BP, BTHE, HC and NOx) are found to be 2.258 KW, 29.05%, 6.31 ppm, and 159.5 ppm respectively. The performance of B20 fueled engine was almost comparable to that of diesel fuel. …”
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Study of diesel-biodiesel blends combustion and emission characteristics in a CI engine by adding nanoparticles of Mn (II) supramolecular complex
Published 2020“…X-ray diffraction of one crystal, a spectroscopy technique and transmission electron microscopy (TEM) have been entirely examined for the structure formation of SC1. Adding 50, 100, and 150 ppm of SC1 with hydrogen peroxide (H2O2) is used to prepare the nanofluids emulsions. …”
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Enhancing the Remediation Capacity of Mercury Ions from Fluorescent Lamp Using Roasted Date Pits and Its Modified Forms
Published 2016“…Moreover, at pH 8 and pH 10, the adsorption decreased with an average Hg concentration of 3.5 and 8.01 ppm, respectively. …”
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Dynamics of Neisseria gonorrhoeae transmission among female sex workers and clients: A mathematical modeling study
Published 2024“…Increasing condom use from 10 % to 50 % lowers NG prevalence among FSWs, clients, and their spouses from 12.2 % to 6.4 %, 1.2 % to 0.5 %, and 0.4 % to 0.2 %, respectively. …”
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Evaluation of the inhibition performance of piperazine-based polyurea towards mild steel corrosion: The role of keto-enol tautomerization
Published 2022“…The presence of PUCorr at 100 ppm decreases the corrosion current density from 30.3 to 3.05 μA/cm2 in 0.5 M NaCl at room temperature, exhibiting a remarkable inhibition efficiency of 94.5%. …”
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The Separation of Emulsified Water/Oil Mixtures through Adsorption on Plasma-Treated Polyethylene Powder
Published 2021“…The efficiency of the plasma-treated LDPE powder in oil removal was found to be dependent on the initial oil concentration. It decreased from 96.7% to 79.5% as the initial oil concentration increased from 75 ppm to 200 ppm. …”
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Mechanism and kinetics of electrochemical degradation of uric acid using conductive-diamond anodes
Published 2016“…Interestingly, an almost total mineralization of 50 ppm UA was obtained when anodic oxidation was performed at low current densities (20 mA cm–2) and in the presence of NaCl. …”
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Tests of a diamond field-assisted positron moderator
Published 2002“…The film was coated on one side with a 200 nm gold electrode and on the other with a similar thickness of gold in the form of a fine mesh (10 μm lines, 40 μm spaces) in the central part of the diamond surface and a solid edge for electrical contact. …”
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Novel fluorinated surfactants for enhanced oil recovery in carbonate reservoirs
Published 2016“…Core flooding experiments showed 42 % additional oil recovery using 2.5 g/L (2500 ppm) HPAM and 0.001 g/g (0.1 mass%) amphoteric surfactant at 90 °C.…”
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