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921
Influence of changing casing groove parameters on the performance of centrifugal compressors near stall condition
Published 2016“…Results showed that by increasing the number of grooves, the surge margin (SM) increases and the isentropic efficiency decreases, but the stall area at the shroud surface decreases in size and its location is shifted toward the blades trailing edge.…”
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922
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923
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924
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925
The Influence of Qatari Dust on the Element Composition of Marine Plankton
Published 2021“…The biogenic concentrations of trace metals were determined by correcting the bulk analyses for the lithogenic contribution using aluminum content of Qatari dust as a lithogenic tracer. The relative trace metal composition of plankton from EEZ of Qatar is Fe > Zn ≈ Cu > V ≈ Ni ≈ Cr ≈ As ≈ Mo > Cd ≈ Co. …”
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926
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927
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928
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929
Internal Pressure Capacity and Bending Behavior of Glass Fiber Reinforced Composite Overwrapping PVC Plastic Pipes.
Published 2020“…Therefore, this study proposes a glass fiber-reinforced polymer (GFRP) overwrapped system to strengthen the external surface of PVC pipes, which will improve pipes pressure and flexural capacities. …”
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930
Hybrid fuzzy sliding mode for stick-slip suppression in drill string systems
Published 2022“…Stick-slip vibration is one of the main factors that contribute greatly to reducing the service life of drill string equipment and decreasing the efficiency of the overall drilling system. …”
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931
Concentrated Solar Power Plant for Key Locations in Doha Qatar
Published 2017“…One of the pillars of the Qatar National Vision 2030 is the protection and preservation of the environment by decreasing the dependency on hydrocarbon resources and promoting the use and development of renewable energy sources. …”
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