Showing 181 - 200 results of 494 for search '(( 50 ((ms decrease) OR (a decrease)) ) OR ((( a step decrease ) OR ( 25 mg decrease ))))*', query time: 0.16s Refine Results
  1. 181

    Pilot-scale petroleum refinery wastewaters treatment systems: performance and microbial communities' analysis by Karray, Fatma

    Published 2020
    “…The reduction of the COD, BOD5, phenols, and the total petroleum hydrocarbon (TPH) reached 82.10%, 85.87%, 91.63%, and 81.11%, respectively at high hydraulic residence time (HRT = 10 days). Decreasing HRT to 5 and 2.5 days led to a decrease in the efficiency of the process and a decrease in biomass concentration was also observed (<1000 mg/l). …”
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  2. 182

    Effects of soaking, acidity and temperature on cadmium and lead removal from rice by Al-Naimi M.

    Published 2020
    “…Results showed that few samples have shown lead concentrations above the maximum limit set by the World Health Organization (WHO) and the UN Food and Agriculture Organization (FAO) of 0.2 mg/kg, whereas, all cadmium concentrations were below the limit of 0.4 mg/kg. …”
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  3. 183

    Effects of combined calcium hypochlorite and chlorine dioxide on drinking water quality in Qatar and disinfection by-products formation by Mohamed, Elsamoul H.

    Published 2017
    “…Seven water samples were collected from the Ras Laffan-Q Power desalination plant outlet in amber bottles having a chlorine dioxide concentration of 0.3 mg/L in 1 liter. The bottles were spiked with Ca(ClO)2 in sequence to give concentration of 0.2, 0.4, 0.6, 0.8, 1.0, and 1.2 mg/L as free chlorine. …”
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  4. 184
  5. 185

    Cold Plasma as Effective Tool for Aluminum Surface Cleaning by Popelka, Anton

    Published 2016
    “…One of the most popular uses of Al is in the packaging industry. Moreover, it plays a main role in the construction, such as aluminum composite panel. …”
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  6. 186

    Investigation of Magnesium (II), Calcium (II) and Barium (II) Complexes in Aqueous Solution by Bakr, Mustafa Farag [مصطفى فرج بكر]

    Published 2005
    “…The ionic association constants, K6, of Mg, Ca and Ba metal ions with succinate, malate and tartrate ligands were conduct metrically determined in water at 25-40°C. …”
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  7. 187

    Application of Fe3O4 magnetite nanoparticles grafted in silica (SiO2) for oil recovery from oil in water emulsions by Elmobarak W.F.

    Published 2021
    “…An excellent %ηdem ≥ 90% was achieved Coil in the range 50–2000 mg/L. Using an MDdose as low as 10 mg/L attained a %ηdem in the range of 93%–94.3% for O/W mixtures with Coil < 2000 mg/L, which slightly decreased to ∼90% for higher concentrations. …”
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  8. 188
  9. 189

    Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO2- saturated saline solution by Jalab, Rem

    Published 2023
    “…Lastly, potentiostatic testing of steel with AGGPAM at an applied potential of 50 mV illustrated surface protection and decreased current over a prolonged time. …”
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  10. 190

    Low cost microcontroller-based inverter integrated in PV systems by Salmi, Tarak

    Published 2013
    “…This would increase the efficiency and decrease the leakage current. The control strategy of the proposed topology is based on a low cost microcontroller interfaced to two drivers to step up the MOSFETs gate voltages. …”
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  11. 191

    Simulation-Based Parametric Study for the Hybrid Superplastic Forming of AZ31 by Al-Abtaha, Fatima Ghassan

    Published 2019
    “…The forming process consists of two steps. At the pre-forming step (deep drawing), the sheet is drawn into the die to a preselected level, using a mechanical punch, and at the second step (SPF) a pressurized gas is applied at a controlled rate. …”
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  12. 192
  13. 193

    High-Rate Anaerobic Digestion of Waste Activated Sludge by Integration of Electro-Fenton Process by Feki, Emna

    Published 2020
    “…Following EF pretreatment, the pH, conductivity, soluble chemical oxygen demand (SCOD), and volatile fatty acids (VFA) increased to 7.5, 13.72 mS/cm, 4.1 g/L, and 925 mg/L, respectively. Capillary suction time (CST) analysis highlighted the dewaterability effect of EF on WAS, as demonstrated by the decrease in CST from 429 to 180 s following 30 min of pretreatment. …”
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  14. 194
  15. 195

    Effect Of The Apical Ectodermal Ridge On Mitotic Index In Hind Limb Bud Mesenchyme In Bufo Regularis by Abdel Karim, Ahmed E.

    Published 1991
    “…The operated bud (80% of cases) showed a decrease in its volume and there was no significant difference in mesenchyme MI. …”
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  16. 196
  17. 197

    Novel fluorinated surfactants for enhanced oil recovery in carbonate reservoirs by Al-Amodi, Adel O.

    Published 2016
    “…An adsorption isotherm showed that the maximum adsorption of surfactant‐A was 1 mg per g of rock. 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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  18. 198
  19. 199
  20. 200

    Automatic Sleep Arousal Detection Using State Distance Analysis in Phase Space by Zabihi M.

    Published 2018
    “…We first show how the states distance matrices of a complex system can be reconstructed to decrease the effect of false neighbors. …”
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