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decrease » increase (توسيع البحث)
increased » increase (توسيع البحث)
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Catalytic CO<sub>2</sub> conversion to C1 value-added products: Review on latest catalytic and process developments
منشور في 2023"…This review discusses the latest technological innovations in catalyst developments for direct CO<sub>2</sub> utilization to C1 value-added products and fuels. Amongst the various potential products, CO<sub>2</sub> conversion to dimethyl carbonates, methanol, formic acid, syngas, and methane using different homogenous and heterogeneous catalytic systems was discussed. …"
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A clustering metaheuristic for large orienteering problems
منشور في 2022"…The metaheuristic aims to dramatically improve the computation time of a given Orienteering Problem algorithm without a significant decrease in the solution quality of that algorithm, especially for large Orienteering Problems. …"
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Development of image quality related reference doses called acceptable quality doses (AQD) in paediatric CT exams in Qatar
منشور في 2022"…The median CTDIvol values for the above weight groups were 16, 20, 22, 22, 27 and 27 mGy and the median DLP values for these weight groups were 271, 377, 463, 486, 568 and 570 mGy cm, respectively, for head CT. …"
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A GRASP Approach for Solving Large-Scale Electric Bus Scheduling Problems
منشور في 2021"…The problem is modelled using a mixed integer program (MIP) in which the charging time of an EB is pertinent to the battery’s state-of-charge level. To be able to solve large problem instances corresponding to real-world applications of the model, a metaheuristic approach is investigated. …"
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The impact of automatic tube current modulation related settings of a modern GE CT scanner on image quality and patient dose; details do matter
منشور في 2024"…<h3>Purpose</h3><p dir="ltr">To investigate the operation principles of the automatic tube current modulation (ATCM) of a modern GE healthcare CT scanner, and the impact of related settings on image quality and patient dose.…"
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Parallel multi-voltage power minimization in VLSI circuits. (c2013)
منشور في 2013احصل على النص الكامل
احصل على النص الكامل
masterThesis -
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Demographic characteristics and clinical and laboratory features of patients with Clostridiodes difficile infection: A retrospective study in Qatar
منشور في 2025"…Respiratory tract infections (33.9%) and urinary tract infections (22.4%) were the most common indications for antibiotic use in the study population. Increased C-reactive protein levels were the most frequently observed laboratory findings. …"
احصل على النص الكامل
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احصل على النص الكامل
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Shear Strength Behaviors of Tire Shred-Dune Sand Admixtures
منشور في 2024احصل على النص الكامل
doctoralThesis -
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Shear Strength Behavior of Tire Shred-Dune Sand Admixtures
منشور في 2025احصل على النص الكامل
doctoralThesis -
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Synthesis and evaluation of novel Cu-based adsorbent-containing catalysts for CO<sub>2</sub> hydrogenation to methanol and value-added products
منشور في 2024"…<p dir="ltr">In this work, sequential incipient wetness impregnation method was used to synthesize Cu/Al<sub>2</sub>O<sub>3</sub>, Cu/Na<sub>2</sub>O/Al<sub>2</sub>O<sub>3</sub> and Cu/CaO/Al<sub>2</sub>O<sub>3</sub> catalysts in different compositions for CO<sub>2</sub> conversion to value-added products. Synthesized catalysts were characterized using various analytical techniques and their performances for CO<sub>2</sub> catalytic conversion were tested in a high-pressure packed bed reactor under reaction conditions of P = 60 bars, T = 300 °C, and H<sub>2</sub>/CO<sub>2</sub> = 3. …"
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