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| 1 | PBL加劲型矩形钢管混凝土受拉节点热点应力集中系数计算方法显示文摘考虑了PBL加劲型矩形钢管混凝土支管受拉节点支主管宽度比与厚度比和主管宽厚比,建立了热点应力集中系数有限元模型,计算了支主管节点热点应力集中系数;基于最小二乘法对计算结果进行拟合,给出不同几何参数下节点热点应力集中系数计算公式,对比了矩形钢管节点和PBL加劲型矩形钢管混凝土节点应力集中系数和荷载幅。计算结果表明:采用有限元模型计算的热点应力集中系数曲线与静力试验曲线基本一致,支主管交汇处各位置热点应力集中系数有限元计算结果与CIDECT规范公式计算结果平均比值分别为1.006、1.007、1.013、1.015和0.987,两者差值小于15%,因此,有限元模型可靠;PBL加劲型矩形钢管混凝土支管受拉节点热点应力集中系数变化规律基本一致,随支主管宽度比呈抛物线变化,在0.6~0.8之间达到最大值,随主管宽厚比和支主管厚度比增大而增大,与CIDECT规范中矩形钢管节点计算结果一致;拟合得到的PBL加劲型矩形钢管混凝土节点热点应力集中系数公式计算结果与有限元计算结果的平均比值为1.011,均方差为0.222,变异系数为0.219,说明了拟合公式准确;采用应力集中系数计算公式,将PBL加劲型矩形钢管混凝土节点与矩形钢管节点进行对比,PBL加劲型矩形钢管混凝土节点支管热点应力集中系数下降了68%以上,主管热点应力集中系数下降了61%以上,在2.0×106循环次数作用下,容许荷载幅提高到3倍以上。 | 刘永健 姜磊 熊治华 张国靖 FAM Amir | 2017 | 交通运输工程学报2017,17,5: | 10 |
| 2 | Large scale testing and analysis of hybrid concrete/composite tubes for circular beam-column applications显示文摘 | Amir Fam Sami Rizkalla | 2003 | Construction and Building Materials2003,,6: | 2 |
| 3 | Development of Al_2O_3/TiN Ceramie Cutting Tool Materials by Artificial Neural Networks显示文摘The artificial neural networks (ANN) which have broad application were proposed to develop multiphase ceramic cutting tool materials. Based on the back propagation algorithm of the forward multilayer perceptron, the models to predict volume content of composition in particle reinforced ceramics are established. The Al2O3/TiN ceramic cutting tool material was developed by ANN, whose mechanical properties fully satisfy the cutting requirements. | Ning FAM, Xiangbo ZE and Zihui GAOSchool of Mechanical Engineering, Jinan University, Jinan 250022, China | 2004 | Journal of Materials Science & Technology2004,20,6: | 2 |
| 4 | Botulinum toxin associated with fissurectomy and anoplasty for hypertonic chronic anal fissure: A case-control study显示文摘BACKGROUND Lateral internal sphincterotomy is still the approach of choice for the treatment of chronic anal fissure(CAF)with internal anal sphincter(IAS)hypertonia,but it is burdened by high-risk postoperative faecal incontinence(FI).Sphincter saving procedures have recently been reconsidered as treatments to overcome this risk.The most employed procedure is fissurectomy with anoplasty,eventually associated with pharmacological sphincterotomy.AIM To evaluate whether fissurectomy and anoplasty with botulinum toxin injection improves the results of fissurectomy and anoplasty alone.METHODS We conducted a case-control study involving 30 male patients affected by CAF with hypertonic IAS who underwent fissurectomy and anoplasty with V-Y cutaneous flap advancement.The patients were divided into two groups:Those in group I underwent surgery alone,and those in group II underwent surgery and a botulinum toxin injection directly into the IAS.They were followed up for at least 2 years.The goals were to achieve complete healing of the patient and to assess the FI and recurrence rate along with manometry parameters.RESULTS The intensity and duration of post-defecatory pain decreased significantly in both groups of patients starting with the first defecation,and this reduction was higher in group II.Forty days after surgery,we achieved complete wound healing in all the patients in group II but only in 80%of the patients in group I(P<0.032).We recorded 2 cases of recurrence,one in each group,and both healed with conservative therapy.We recorded one temporary and low-grade postoperative case of“de novo”FI.Manometry parameters reverted to the normal range earlier for group II patients.CONCLUSION The injection of botulinum toxin A in association with fissurectomy and anoplasty with a V-Y advancement flap improves the results of surgery alone in patients affected by CAF with IAS hypertonia. | Beatrice D'Orazio Girolamo Geraci Fausto Famà Gloria Terranova Gaetano Di Vita | 2021 | World Journal of Clinical Cases2021,9,32: | 2 |
| 5 | Acute gouty synovitis associated with 'urate milk' 显示文摘 | FAM A G REIS M D SZALAI J P | 1997 | J Rheumatol1997,24,12: | 1 |
| 6 | Skeletal muscle infarction in diabetes mellitus显示文摘 | Grigoriadis E Fam AG Starok M Ang LC | 2000 | J Rheumatol2000,27,4: | 1 |
| 7 | An Investigation on the Factor Affecting MIS Student Bumact in Technical -Vocational College 显示文摘 | Hui-Jen YC Fam K | 2005 | Computors in Human Behavior2005,21,: | 1 |
| 8 | MR imaging of the normal meninges:comparison of contrast-enhancement patterns on 3D gradient-echo and spin-echo images显示文摘 | Fam JM Mirowitz SA | 1994 | AJR1994,16,1: | 1 |
| 9 | Finite element modeling of hollow and concrete-filled fiber composite tubes in flexure: Optimization of partial filling and a design method for poles显示文摘 | Amir Fam Je-Kuk Son | 2008 | Engineering Structures2008,,10: | 1 |
| 10 | Ureteral stricture formation after ureteroscope treatment of impacted cal- culi: A prospective study显示文摘 | Fam X I Singam P Ho C C | 2015 | Korean J Urol2015,56,1: | 1 |
| 11 | Bladder cancer and squamous metaplacia in spinal cord injury patients显示文摘 | Kaufmann JM Fam B Jacobs SC | 1977 | J Urol1977,118,: | 1 |
| 12 | Behaviors of CFRP for prestressing and shear reinforcements of concrete Highway bridges显示文摘 | Fam A Z | 1997 | ACI1997,94,1: | 1 |
| 13 | Unraveling microbial interactions in food fermentations: from classical to genomics approaches显示文摘 | Sieuwerts S de Bok FAM Hugenholtz J | 2008 | Applied and Environmental Microbiology2008,74,16: | 1 |
| 14 | FRP tubes filled with concrete and subjected to axial loads, bending and combined loads显示文摘 | Amir Fam Bart Flisak and Sami Rizkalla | 2001 | FRP Composites in Civil Engineering2001,,: | 1 |
| 15 | Confinement model for axially loaded concrete confined by circular fiber-reinforced polymer tubes 显示文摘 | Fam A Rizkalla S | 2001 | ACI Materials Journal2001,98,4: | 1 |
| 16 | Interspecies electron transfer in methanogenic propionate degrading consortia显示文摘 | de Bok FAM Plugge CM Stams AJM | | 0,,06: | 1 |
| 17 | Finite Element Analysis of Slender HSS Columns Strengthened with High Modulus Composites显示文摘 | Shaat A Fam A | 2009 | Steel&Composite Structures2009,7,1: | 1 |
| 18 | New evolutionary genetic algorithms for NP-complete combinatorial optimization problems显示文摘 | Fam Quang Bac V. L. Perov | 1993 | Biological Cybernetics1993,,3: | 1 |
| 19 | Experimental and Analytical Modeling of Concrete-Filled Fiber-Reinforced Polymer Tubes Subjected to Combined Bending and Axial Loads显示文摘 | Fam A Z Flisak B Rizkalla S | 2003 | ACI Structural Journal2003,100,4: | 1 |
| 20 | Meridional analysis for calculating the expected spherocylindrical refraction in eye with toric intraocular lenses显示文摘 | Fam HB Lim KL | | 0,,12: | 1 |