يعرض 1,461 - 1,480 نتائج من 1,781 نتيجة بحث عن '(( 10 ((nn decrease) OR (a decrease)) ) OR ( 50 ((nn decrease) OR (a decrease)) ))', وقت الاستعلام: 0.24s تنقيح النتائج
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    Effect of reinforcement concentration on the properties of hot extruded Al-Al2O3 composites synthesized through microwave sintering process حسب Reddy, M. Penchal

    منشور في 2017
    "…Results showed that, as the content of hard ceramic particles increases, it improves overall mechanical properties including microhardness, 0.2% yield strength, ultimate compression/tensile strength, and Young's modulus while the ductility and co-efficient of thermal expansion decreases. XRD patterns and SEM/EDS mapping images show a uniform distribution of Al2O3 particles in the Al matrix. …"
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    Preterm birth in low-middle income Countries حسب Alim, Swarray-Deen

    منشور في 2024
    "…Preterm birth (PTB), remains a major cause of significant morbidity and mortality world-wide with about 12–15million preterm births occurring every year. …"
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