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| 1 | Improvement in Mechanical Properties of Microalloyed Steel 30MSV6 by a Precipitation Hardening Process显示文摘The microstructural evolutions and mechanical properties of vanadium microalloyed steel (30MSV6) during precipitation hardening were studied. The effects of aging temperature and cooling rate on mechanical strength (yield strength and ultimate tensile strength) were similar. Increasing aging temperature or cooling rate firstly increased the mechanical strength of specimens up to their maximum values, which then decreased with further increase in aging temperature or cooling rate. Microstructural evolutions revealed that cooling rate had significant effects on the pearlite interlamellar spacing and size of pre-eutectoid ferrite. Unlike the effect of austenitizing temperature, the pearlite interlamellar spacing and pre-eutectoid ferrite size were decreased by increasing the cooling rate from austenitizing temperature. According to the microstructural evolutions and mechanical properties, the optimal heat treatment process of microalloyed steel 30MSV6 was austenitizing at 950 ℃ for 1 h, air cooling (3.8 ℃/s) and aging at 600 ℃ for 1.5 h. This optimal heat treatment process resulted in a good combination of elongation and yield strength. | M Hajisafari S Nategh H Yoozbashizadeh A Ekrami | 2013 | Journal of Iron and Steel Research(International)2013，20，5： | 6 |
| 2 | Tacrolimus and mycophenolate mofetil as second-line treatment in autoimmune hepatitis:Is the evidence of sufficient quality to develop recommendations?显示文摘BACKGROUND The standard management of autoimmune hepatitis(AIH)is based on corticosteroids,alone or in combination with azathioprine.Second-line treatments are needed for patients who have refractory disease.However,high-quality data on the alternative management of AIH are scarce.AIM To evaluate the efficacy and safety of tacrolimus and mycophenolate mofetil(MMF)and the quality of evidence by using the Grading of Recommendations Assessment,Development and Evaluation approach(GRADE).METHODS A systematic review and meta-analysis of the available data were performed.We calculated pooled event rates for three outcome measures:Biochemical remission,adverse events,and mortality,with their corresponding 95%confidence intervals(CI).RESULTS The pooled biochemical remission rate was 68.9%(95%CI:60.4-76.2)for tacrolimus,and 59.6%(95%CI:54.8-64.2)for MMF,and rates of adverse events were 25.5%(95%CI:12.4-45.3)for tacrolimus and 24.1%(95%CI:15.4-35.7)for MMF.The pooled mortality rate was estimated at 11.5%(95%CI:7.1-18.1)for tacrolimus and 9.01%(95%CI:6.2-12.8)for MMF.Pooled biochemical remission rates for tacrolimus and MMF in patients with intolerance to standard therapy were 56.6%(CI:43.4-56.6)vs 73.5%(CI:58.1-84.7),and among non-responders were 59.1%(CI:48.7-68.8)vs 40.8%(CI:32.3-50.0),respectively.Moreover,the overall quality assessments using GRADE proved to be very low for all our outcomes in both treatment groups.CONCLUSION Tacrolimus and MMF are in practice considered effective for patients with AIH who are non-responders or intolerant to first-line treatment,but we found no high-quality evidence to support this statement. | Mohammadreza Abdollahi Neda Khalilian Ekrami Morteza Ghojazadeh H Marike Boezen Mohammadhossein Somi Behrooz Z Alizadeh | 2020 | World Journal of Gastroenterology2020，26，38： | 5 |
| 3 | The effect of bainite morphology on the mechanical properties of a high bainite dual phase (HBDP) steel显示文摘 | R. Bakhtiari A. Ekrami | 2009 | Materials Science & Engineering A2009，，1： | 2 |
| 4 | 显示文摘 | Hosseini S A Sadrnezhaad S K Ekrami A | 2009 | Materi als Science and Engineering C2009，29，： | 1 |
| 5 | High temperature mechanical properties of dual phase steels 显示文摘 | Ekrami A | 2005 | Materials Letters2005，59，： | 1 |
| 6 | Effect olferrite volume fraction on work hardening behavior of high bainite dual phase(DP) steels显示文摘 | Mohammad Reza Akbarpour Ekrami A | 2008 | Mater Sci Eng A2008，477，： | 1 |
| 7 | Microstructure development during transient liquid phase bonding of GTD-111 nickel-based superalloy 显示文摘 | Ekrami A Kokabi A H | 2007 | Journal of Alloys and Compounds2007，461，： | 1 |
| 8 | Effect of bonding parameters on microstructure development during TGTLP bonding of Al7075 alloy显示文摘 | S. Salman S. Afghahi Aliakbar Ekrami Saeed Farahany Amirreza Jahangiri | 2014 | Philosophical Magazine2014，，11： | 1 |
| 9 | Phase transformation behavior of porous NiTi alloy fabricated by powder metallurgical method显示文摘 | Hosseini S A Sadrnezhaad S K Ekrami A | 2009 | Materials Science and Engineering C2009，29，： | 1 |
| 10 | Microstructural evolu- tion in the transient-liquid-phase bonding area of IN-738LC/BNi- 3/IN-738LC 显示文摘 | Mosallaee M Ekrami A Ohsasa K | 2008 | Metallurgical and Materials Transactions A2008，39，10： | 1 |
| 11 | Nocardia co-in- fection in patients with pulmonary tuberculosis显示文摘 | Ekrami A Khosravi AD Samarbaf Zadeh AR | 2014 | Jundishapur J Micro- biol2014，7，12： | 1 |
| 12 | Solidification and solid state phenomena during TLP bonding of IN718 superalloy using Ni–Si–B ternary filler alloy显示文摘 | M. Pouranvari A. Ekrami A.H. Kokabi | 2013 | Journal of Alloys and Compounds2013，，： | 1 |
| 13 | The effect of bainite morphology on the mechanical properties of a high bainile dual phase (HB- DP) steel显示文摘 | BAKHTIAR1 R EKRAMI A | 2009 | Materials Science and Engineering A2009，525，12： | 1 |
| 14 | Validity of bioconjugated silica nanoparticles in comparison with direct smear,culture,and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens显示文摘 | Ekrami A Samarbaf-Zadeh AR Khosravi A | | 0，，： | 1 |
| 15 | Effect of ferrite volume fraction on work hardening behavior of high bainite dual phase (DP) steels 显示文摘 | Akbarpour M R Ekrami A | 2008 | Materials Science and Engineering A2008，467，12： | 1 |
| 16 | High Temperature Mechanical Properties of Dual Phase Steels显示文摘 | Ekrami A | 2005 | Materials Letters2005，，59： | 1 |
| 17 | Remineralizing efectof child formula dentifrices on artificial enamel caries using a pHcycling model显示文摘 | Malekafzali B Ekrami M Mirfasihi A | 2015 | J Dent (Tehran)2015，12，1： | 1 |
| 18 | Effect of transient liquid phase diffusion bonding on microstructure and properties of a nickel base superalloy Rene 80 显示文摘 | EKRAMI A MOEINIFAR S KOKABI A H | 2007 | Materials Science and Engineering A2007，456，： | 1 |
| 19 | High Temperature Mechanical Properties of Dual Phase Steels显示文摘 | Ekrami A | 2005 | Materials letters2005，，59： | 1 |
| 20 | 温度梯度瞬时液相扩散连接7075-T6铝合金的疲劳性能(英文)显示文摘以液态镓为中间层过渡相,研究温度梯度瞬时液相(TGTLP)扩散连接7075-T6铝合金的疲劳性能。疲劳试样在460°C和10 MPa下扩散连接10 min。扩散连接样品在465°C均匀化2h后进行T6热处理。7075-T6铝合金在90 MPa下的疲劳寿命为107循环,而在此应力水平下,扩散连接样品的疲劳寿命为1.2×106循环,为7075铝合金疲劳寿命的10%。采用扫描电镜对7075铝合金和扩散连接样品的疲劳断口进行分析,以确定两种合金的形核位置和裂纹生长阶段。 | Seyyed Salman Seyyed AFGHAHI Aliakbar EKRAMI Saeed FARAHANY Amirreza JAHANGIRI | 2015 | Transactions of Nonferrous Metals Society of China2015，25，4： | 1 |
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