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| 1 | 烧结温度对La_(0.6)Ca_(0.4)MnO_3结构、磁性和磁致热效应的影响(英文)显示文摘研究了烧结温度对La0.6Ca0.4MnO3的结构、磁转变和磁熵的影响。观察表明,该化合物属于具有Pnma空间群的斜方晶系结构,不含任何杂质。研究烧结温度对居里温度(TC)的影响,发现提高烧结温度,TC稍有增大。磁致热效应研究显示,随着烧结温度的变化,磁熵会发生显著的变化。在外加磁场为3 T、烧结温度为1300°C时,相对冷却能(RCP)为89 J/kg。因此,该化合物可以考虑作为在室温附近或低于室温的潜在磁制冷材料。 | Seung Rok LEE M.S.ANWAR Faheem AHMED Bon Heun KOO | 2014 | Transactions of Nonferrous Metals Society of China2014，24，S1： | 0 |
| 2 | 单晶金红石型TiO_2纳米棒的湿法合成(英文)显示文摘用TiO2粉末、NaOH和蒸馏水为原料合成金红石型TiO2纳米棒。XRD和FESEM分析表明,制备的样品为单晶且无杂质,其平均粒径约为40 nm。当样品于600°C退火2 h后,FESEM观察发现生成了TiO2纳米棒。XRD分析表明纳米棒为单晶。纳米棒表面光滑,其长约为1μm,直径约为80 nm。紫外和拉曼光谱研究表明,所制备样品的能带间隙为3.40 eV。 | Rehan DANISH Faheem AHMED Nishat ARSHI M.S.ANWAR Bon Heun KOO | 2014 | Transactions of Nonferrous Metals Society of China2014，24，S1： | 0 |
| 3 | Mathematical modeling and parametric investigation of blood flow through a stenosis artery显示文摘In this study,a mathematical model is formulated to examine the blood flow through a cylindrical stenosed blood vessel.The stenosis disease is caused because of the abnormal narrowing of flow in the body.This narrowing causes serious health issues like heart attack and may decrease blood flow in the blood vessel.Mathematical modeling helps us analyze such issues.A mathematical model is considered in this study to explore the blood flow in a stenosis artery and is solved numerically with the finite difference method.The artery is an elastic cylindrical tube containing blood defined as a viscoelastic fluid.A complete parametric analysis has been done for the flow velocity to clarify the applicability of the defined problem.Moreover,the flow characteristics such as the impedance,the wall shear stress in the stenotic region,the shear stresses in the throat of the stenosis and at the critical stenosis height are discussed.The obtained results show that the intensity of the stenosis occurs mostly at the highest narrowing areas compared with all other areas of the vessel,which has a direct impact on the wall shear stress.It is also observed that the resistive impedance and wall shear pressure get the maximum values at the critical height of the stenosis. | A.ALI M.HUSSAIN M.S.ANWAR M.INC | 2021 | Applied Mathematics and Mechanics(English Edition)2021，42，11： | 0 |
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