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| 1 | Mixed finite element and differential quadrature method for free and forced vibration and buckling analysis of rectangular plates显示文摘This paper presents a combined application of the finite element method (FEM) and the differential quadrature method (DQM) to vibration and buckling problems of rectangular plates. The proposed scheme combines the geometry flexibility of the FEM and the high accuracy and efficiency of the DQM. The accuracy of the present method is demonstrated by comparing the obtained results with those available in the literature. It is shown that highly accurate results can be obtained by using a small number of finite elements and DQM sample points. The proposed method is suitable for the problems considered due to its simplicity and potential for further development. | S. A. EFTEKHARI A. A. JAFARI | 2012 | Applied Mathematics and Mechanics(English Edition)2012，33，1： | 4 |
| 2 | Effect of alumina content and heat treatment on microstructure and upconversion emission of Er^(3+)ions in oxyfluoride glass-ceramics显示文摘The effect of alumina content and heat treatment temperature and time, on microstructure and Er3+ (0.5 mol.%) emission of oxy-fluoride glass-ceramics were investigated in this research. Two values of 1.8 (SA1.8Er0.5) and 2.18 (SA2.18Er0.5) were selected in this re-search for SiO2/Al2O3 ratio. According to DTA results, precursor glasses were heat treated at 630, 660 and 690 °C for 4 h and some glasses were also heat treated at 630 °C for 48 and 72 h. The results indicated that alumina content had significant effect on phase separation and vis-cosity of the glasses. Therefore the size, size distribution, and volume concentration of nano CaF2 crystals which precipitated during the heat treatment depended on alumina content of the glass. Due to the much smaller size of the precipitated CaF2 crystals in the glasses of low alumina content, these samples maintained excellent transparency and had narrower crystal size distribution than the high alumina glasses. The crystal size was increased markedly with the temperature increasing from 630 to 690 °C. On the other hand a slight increase was observed in the crystal size by raising the heat treatment time in both glasses. Results indicated that in low alumina content glass (SA2.18Er0.5) the size of CaF2 nanocrystals was controlled in one order of magnitude. The increase of heat treatment time and temperature led to the incorporation of Er3+ ions into CaF2 crystalline phase, increasing significantly the upconversion intensity. After heat treatment at 690 ℃ for 4 h, atomic force microscope (AFM) re-vealed the development of small crystals with an average size of 80 and 30 nm in SA1.8Er0.5 and SA2.18Er0.5 samples, respectively. | Mohammad Hasan Imanieh Bijan Eftekhari Yekta Vahak Marghussian Inocencio Rafael Martin Benenzuela Alberto Hernandez Creus Saeed Shakhesi Esmaeil Eslami | 2012 | Journal of Rare Earths2012，30，12： | 3 |
| 3 | Floor tile glass-ceramic glaze for improvement of glaze surface properties显示文摘 | Bijan Eftekhari Yekta Parvin Alizadeh Leila Rezazadeh | 2006 | Journal of the European Ceramic Society2006，，16： | 2 |
| 4 | Protective effect of N-acetylcysteine on antituberculosis drug-induced hepatotoxicity显示文摘 | Shadi Baniasadi Parivash Eftekhari Payam Tabarsi Fanak Fahimi Mohammad Reza Raoufy Mohammad Reza Masjedi Ali Akbar Velayati | 2010 | European Journal of Gastroenterology & Hepatology2010，，10： | 2 |
| 5 | Silent myocardial ischemia:current perspectives and future directions显示文摘 | Ahmed AH Shankar K Eftekhari H | 2007 | Exp Clin Cardiol2007，12，： | 1 |
| 6 | Vitrification versus slow freezing gives excellent survival, post warming embryo morphology and pregnancy outcomes for human cleaved embryos显示文摘 | Mojtaba Rezazadeh Valojerdi Poopak Eftekhari Yazdi and Leila Karimian | 2009 | J Assist Reprod Genet2009，26，6： | 1 |
| 7 | Block-wise 2D kernel PCA/LDA for face recognition 显示文摘 | Eftekhari A Forouzanfar M Abrishami M H | 2010 | Information Processing Letters2010，110，17： | 1 |
| 8 | A peptide vaccine administered transcutaneously together with chol- era toxin elie its potent neutralising anti-FMDV antibody responses显示文摘 | Beignon A S Brown F Eftekhari P | 2005 | Vet Immunol Immunopathol2005，104，34： | 1 |
| 9 | Enclocardial boundaD, ex- tracti - on in left ventrieular echocardio graphic images using fast and adaptive B - spline Snake algorithm 显示文摘 | Marsousi M Eftekhari A Kocharian A | 2015 | International Journal of Computer Assisted Radiology and Surgery2015，5，5： | 1 |
| 10 | Thyroid gland:US in patients with Hodgkin's disease treated with radiation therapy in childhood显示文摘 | David CL Eftekhari F | 1989 | Radiology1989，172，1： | 1 |
| 11 | The immediate hemodynamic effects of enhanced external counterpulsation on the left ventricular function 显示文摘 | Eftekhari A May O | 2012 | Scand Cardiovasc J2012，46，2： | 1 |
| 12 | Long-term mat- ernal and subsequent pregnancy outcomes 5 years after hemolysis,elevated liver enzymes,and low platelets(HELLP) syndrome 显示文摘 | Habli M Eftekhari N Wiebracht E | 2009 | Am J Obstect Gynecol2009，201，4： | 1 |
| 13 | 3D Deposition of LiMn2O4:enhancement of lithium battery performance显示文摘 | EFTEKHARI A | 2003 | Solid State Ionics2003，161，： | 1 |
| 14 | A new ensemble learning method- ology based on hybridization of classifier ensemble selection approaches 显示文摘 | R Mousavia M Eftekhari | 2015 | Applied Soft Computing2015，，： | 1 |
| 15 | The effect of B203 , PbO and P2O5 on the sintering and machinability of fluormica glass-ceramics 显示文摘 | Eftekhari Yekta B Hashemi Nia S Alizadeh P | 2005 | J European Ceram Soc2005，25，： | 1 |
| 16 | Effect of Cr2Os,Fe203 and TiO2 nucleants on the crystallization behavior of SiO2-AlzO3CaO-MgO(R20) glass-ceramics 显示文摘 | REZVANI M EFTEKHARI Y B SOLATI H M | 2005 | Ceram lnt2005，310，： | 1 |
| 17 | Silent myocardial ischemia:Current perspectives and future directions显示文摘 | Ahmed AH Shankar K Eftekhari H | 2007 | Exp Clin Cardiol2007，12，4： | 1 |
| 18 | Frequency and severity of myocardial perfusion abnormalities using Tc-99m MIBI SPECT in cardiac syndrome X 显示文摘 | Saghari M Assadi M Eftekhari M | 2006 | BMC Nucl Med2006，6，： | 1 |
| 19 | Surface modification of thin-film based LiCoPO4 5V cathode with metal oxide显示文摘 | Eftekhari A | 2004 | J Electrochem Soc2004，151，9： | 1 |
| 20 | Differential distribution of calcitonin gene-related peptide and its receptor components in the human trigeminal ganglion显示文摘 | Eftekhari S Salvatore CA Calamari A | | 0，，： | 1 |
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