Showing 101 - 120 results of 802 for search '(( 50 ((nn decrease) OR (a decrease)) ) OR ((( a point decrease ) OR ( i we decrease ))))*', query time: 0.22s Refine Results
  1. 101

    Urology Residents' Perspectives on the In-House On-Call Systems: A Study in an Accredited Academic Center by Khalil, Ibrahim A. and Ibrahim, Tarek and Aldeeb, Maya and Mohamed, Ahmed and Ben Salah, Rym and Aboumarzouk, Omar M. and Al-Naimi, Abdulla

    Published 2022
    “…Quality of life and education: We adopted a validated survey based on a 5-point Likert scale to assess the residents' perception of the transition to a 12-hour on-call system on their quality of life and education. …”
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  2. 102

    Understanding the Scales Formation Inhibition Mechanism on C-Steel in a Sour Media by Al-Qahtani, Noora

    Published 2019
    “…In this work, the electrochemical behaviour of C-steel in sour (i) de-ionised water (DIW) and (ii) in different NaCl solutions were examined in an H2S system. A series of experiments were conducted at ambient (RT), 50 oC and at 80 oC using different combinations of inhibitors (A and B). …”
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  3. 103
  4. 104

    Online monitoring of climatic parameters: a statistical study about environmental changes in Qatar by Mahmood, Tahir

    Published 2016
    “…Qatar, being a richest country whose economic growth depends on petroleum and natural gas industry, is paying focus on its environmental development programs, which is also a goal of recent national vision. In this study, we have focused on monitoring of temperature and rainfall pattern in Qatar through different control charting schemes, i.e., memory less (Shewhart) and memory type (EWMA and CUSUM) control charting structures; while time series analysis was performed for the period of 1990-2012. …”
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  5. 105
  6. 106

    Development of a Mechanistic and Data-Driven Model for Multiphase Flow Leak Detection in Pipeline by Barooah, Abinash

    Published 2024
    “…The effect of different pressure constraints, pipe length, pipe diameter, two-phase fluid rheology, leak diameter, leak location, outlet liquid volume fraction, and flowing liquid hold-up on leak size, pressure, and flow rate is analyzed. Decreasing the liquid fraction in the outlet section of the leak leads to a slight increase (6% average) in the inlet mass flow rate and a significant decrease (50% average) in the outlet mass flow rate for fixed pressure constraints, resulting in an increased leak flow rate, pressure, and density. …”
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  7. 107

    Sorption of benzene and naphthalene on (semi)-arid coastal soil as a function of salinity and temperature by NgueleuS.K.

    Published 2018
    “…The concentrations of dissolved chloride and sodium were found to be high (> 400 mg L?1) with a chloride-to?sodium ratio of about 1.7. …”
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  8. 108

    Ecological modernization and responses for a low-carbon future in the Gulf Cooperation Council countries by Al‐Saidi, Mohammad

    Published 2018
    “…Low-carbon development is a challenging endeavor for many fossil fuels exporting nations around the world, and is especially important in light of the recent Paris Agreement on climate change. …”
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  9. 109

    Mechanical Behavior of a Novel Nanocomposite Polysulphone - Carbon Nanotubes Membrane for Water Treatment by Wang, Kui

    Published 2016
    “…The commercial CNTs had a lengths of 1 ?m to 10 ?m and outer diameters of 10 nm to 20 nm (corresponded aspect ratios ranging from 50 to 1000), with purity >95% and BET surface area of 156 m2/g. …”
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  10. 110

    A dynamic MOPSO algorithm for multiobjective optimal design of hybrid renewable energy systems by Sharafi, Masoud

    Published 2014
    “…Additionally, the set coverage metric value shows that at least 67% of Pareto solutions obtained by DMOPSO dominate the solutions resulted by other reported algorithms. By using a sensitivity analysis for the case study, it is found that if the PV panel and wind turbine capital cost are decreased by 50%, the total NPC of the system would be decreased by 18.8 and 3.7%, respectively.…”
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  11. 111
  12. 112
  13. 113

    Experimental study of exhaust emissions and performance of a dual fuel IDI diesel engine by Badr, O.

    Published 1999
    “…Dual fuel engines of the compression ignition type provide an alternative approach for I.C. engines to improve economy, reduce exhaust emissions and achieve a greater power. The present contribution is an experimental investigation to evaluate such a statement using a modified Ricardo E6 indirect injection diesel engine. …”
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  14. 114
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  16. 116

    Tailoring optical absorption in silicon nanostructures from UV to visible light: A TDDFT study by Hassan, Walid M.I.

    Published 2016
    “…Our main findings are that: (i) The oscillator strength as a function of length is quadratic at small lengths, and then increases linearly. …”
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  17. 117

    Qatar Culture Collection of Microalgae: A Sustainable Source for Biodiesel Production and Omega Fatty Acid Compounds by Bounnit, Touria

    Published 2016
    “…The good growth rate of these strains along with their lipid content and profile make them competitive for a viable algal biofuel technology comparing to the terrestrial oil crops which need longer time to grow and present lower amount of lipids (Weyer et al., 2010). In addition, we observed the presence of the omega-3 and 9 long-chain polyunsaturated fatty acids (LC-PUFAs), such as eicosapentaenoic (EPA, 20:5 n-3), docosahexaenoic (DHA, 22:6 n-3) and Nervonic Acid (C24:1 n-9) acids, which have a high commercial value and are known for their beneficial effects on human health…”
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  18. 118
  19. 119

    Flow and heat transfer analysis of Jeffery nano fluid impinging obliquely over a stretched plate by Mehmood, Rashid

    Published 2017
    “…This study investigates the problem of oblique stagnation point flow using Jeffery nanofluid as a rheological fluid model. …”
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  20. 120

    Assessment of Dapagliflozin Effectiveness as Add-on Therapy for the Treatment of Type 2 Diabetes Mellitus in a Qatari Population by Al AdAwi R.M.

    Published 2019
    “…Administration of dapagliflozin as an add-on therapy was found to decrease HbA1c significantly by 0.8 percentage point after 6 months (P = 0.006) and by 1.5 percentage point after 12 months (P = 0.062). …”
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