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| 1 | Effect of abutment modeling on the seismic response ofbridge structures显示文摘Abutment behavior signifi cantly influences the seismic response of certain bridge structures.Specifi cally in the case of short bridges with relatively stiff superstructures typical of highway overpasses,embankment mobilization and inelastic behavior of the soil material under high shear deformation levels dominate the response of the bridge and its column bents.This paper investigates the sensitivity of bridge seismic response with respect to three different abutment modeling approaches.The abutment modeling approaches are based on three increasing levels of complexity that attempt to capture the critical components and modes of abutment response without the need to generate continuum models of the embankment,approach,and abutment foundations.Six existing reinforced concrete bridge structures,typical of Ordinary Bridges in California,are selected for the analysis.Nonlinear models of the bridges are developed in OpenSees.Three abutment model types of increasing complexity are developed for each bridge,denoted as roller,simplifi ed,and spring abutments.The roller model contains only single-point constraints.The spring model contains discrete representations of backfi ll,bearing pad,shear key,and back wall behavior.The simplifi ed model is a compromise between the effi cient roller model and the comprehensive spring model.Modal,pushover,and nonlinear dynamic time history analyses are conducted for the six bridges using the three abutment models for each bridge.Comparisons of the analysis results show major differences in mode shapes and periods,ultimate base shear strength,as well as peak displacements of the column top obtained due to dynamic excitation.The adequacy of the three abutment models used in the study to realistically represent all major resistance mechanisms and components of the abutments,including an accurate estimation of their mass,stiffness,and nonlinear hysteretic behavior,is evaluated.Recommendations for abutment modeling are made. | Ady Aviram Kevin R.Mackie Bozidar Stojadinovic | 2008 | Earthquake Engineering and Engineering Vibration2008，7，4： | 16 |
| 2 | 虚拟 nonenhanced 腹的双精力的 MDCT : 图象特征的分析显示文摘 AIM:To evaluate abdominal and pelvic image characteristics and artifacts on virtual nonenhanced(VNE) images generated from contrast-enhanced dual-energy multidetector computed tomography(MDCT)studies.METHODS:Hadassah-Hebrew University Medical Institutional Review Board approval was obtained;22 patients underwent clinically-indicated abdominal and pelvic single-source dual-energy MDCT(Philips Healthcare,Cleveland,OH,USA),pre-and post-IV administration of Omnipaque 300 contrast(100 cc).Various solid and vascular structures were evaluated.VNE images were generated from the portal contrast-enhanced phase using probabilistic separation.Contrast-enhanced-,regular nonenhanced(RNE)-,and VNE images were evaluated with a total of 1494 density measurements.The ratio of iodine contrast deletion was calculated.Visualization of calcifications,urinary tract stones,and image artifacts in VNE images were assessed.RESULTS:VNE images were successfully generated in all patients.Significant portal-phase iodine contrast deletion was seen in the kidney(61.7%),adrenal gland(55.3%),iliac artery(55.0%),aorta(51.6%),and spleen(34.5%).Contrast deletion was also significant in the right atrium(RA)(51.5%)and portal vein(39.3%),but insignificant in the iliac vein and inferior vena cava(IVC).Average post contrast-to-VNE HU differences were significant(P<0.05)in the:RA-135.3(SD 121.8),aorta-114.1(SD 48.5),iliac artery-104.6(SD 53.7),kidney-30.3(SD 34.9),spleen-9.2(SD 8.8),and portal vein-7.7(SD 13.2).Average VNE-toRNE HU differences were significant in all organs but the prostate and subcutaneous fat:aorta 38.0(SD 9.3),RA 37.8(SD 16.1),portal vein 21.8(SD 12.0),IVC 12.2(SD 11.6),muscle 3.3(SD 4.9),liver 5.7(SD 6.4),spleen 22.3(SD 9.8),kidney 40.5(SD 6.8),and adrenal 20.7(SD 13.5).On VNE images,196/213 calcifications(92%)and 5/6 renal stones(84%)were visualized.Lytic-like artifacts in the vertebral bodies were seen in all studies.CONCLUSION:Iodine deletion in VNE images is most significant in arteries,and less significant in solid organs and veins.Most vascular and intra-abdominal organ calcifications are preserved. | Jacob Sosna Shmuel Mahgerefteh Liran Goshen Galit Kafri Galit Aviram Arye Blachar | 2012 | World Journal of Radiology2012，4，4： | 4 |
| 3 | Hypocholesterolemic Effect of Lycopene and β-Carotene Is Related to Suppression of Cholesterol Synthesis and Augmentation of LDL Receptor Activity in Macrophages显示文摘 | Bianca Fuhrman Avishay Elis Michael Aviram | 1997 | Biochemical and Biophysical Research Communications1997，，3： | 2 |
| 4 | Pomegranate juice consumption inhibits serum angiotensin converting enzyme activity and reduces systolic blood pressure显示文摘 | Michael Aviram Leslie Dornfeld | 2001 | Atherosclerosis2001，，1： | 2 |
| 5 | Paraoxonase 1 (PON1) reduces macrophage inflammatory responses显示文摘 | Saar Aharoni Michael Aviram Bianca Fuhrman | 2013 | Atherosclerosis2013，，2： | 2 |
| 6 | Oxidative stress increases the expression of the CD36 scavenger receptor and the cellular uptake of oxidized low-density lipoprotein in macrophages from atherosclerotic mice:protective role of antioxidants and of paraoxonase显示文摘 | Fuhrman B Volkova N Aviram M | 2002 | Atherosclerosis2002，161，2： | 1 |
| 7 | The lic- orice root derived isoflavin glabridin inhibits the activities of human cytochrome P450S 3A4, 2B6 and 2C9 显示文摘 | Kent UM Aviram M Rosenbalt M | 2002 | Drug MetabDispos2002，30，6： | 1 |
| 8 | Losartan inhibits cellular uptake of oxidized LDL by monocyte-macrophages from hypercholesterolemic patients 显示文摘 | Hayek T Aviram M Heinrich R | 2000 | Biochem Biophys Res Commun2000，273，2： | 1 |
| 9 | Paraoxonaase inhibits highdensity lipoprotein oxidation and preserves its functions显示文摘 | Aviram M Berliner JA Waston AD | 1998 | J Clin Invest1998，101，： | 1 |
| 10 | Tissue angiotensin-converting-enzyme(ACE) deficiency leads to a reduction in oxidative stress and in atherosclerosis:studies in ACE-knockout mice type 2显示文摘 | Hayek T Pavlotzky E Hamoud S Coleman R Keidar S Aviram M | 2003 | Arterioscler Thromb Vasc Biol2003，23，： | 1 |
| 11 | Increased plasma oxidizability and decreased erythrocyte and plasma antioxidative capacity in patients with NIDDM显示文摘 | Zaltzberg H Kanter Y Aviram M | 1999 | Isr Med Assoc J1999，1，4： | 1 |
| 12 | Pomegranate phenol- ics from the peels, arils, and flowers are antiatherogenic: stud- ies in vivo in atherosclerotic apolipophages and e-deficient (E0) mice and in vitro in cultured macrophages and lipoproteins显示文摘 | Aviram M Volkova N Coleman R et a l | 2008 | Agric Food Chem2008，56，3： | 1 |
| 13 | Prenatal diagnosis ofdacryocystocele: a possible marker for syndromes 显示文摘 | SharonyR Raz J Aviram H | 1999 | UltrasoundObstet Gynecol1999，14，1： | 1 |
| 14 | Maternal obesity: implications for pregnancy outcome and long-term risks-a link to maternal nutrition 显示文摘 | Aviram A Hod M Yogev Y | 2011 | Int J Gynaecol Obstet2011，5，1： | 1 |
| 15 | Pregnancy outcome in pregnancies complicated with gestational diabetes mellitus and late pretermbirth显示文摘 | Aviram A Guy L Ashwal E | 2016 | Diabetes Res Clin Pract2016，，： | 1 |
| 16 | The role of calcium in differentiation of leukemic cell lines显示文摘 | Rephaeli A Aviram A Rabizadeh E | 1990 | Cancer Biochem Biophys1990，11，2： | 1 |
| 17 | Transthoracic needle biopsy of lung masses:a survey of techniques显示文摘 | Aviram G Schwartz DS Meirsdorf S | 2005 | Clin Radiol2005，60，3： | 1 |
| 18 | Paraoxonase active site required for protection against LDL oxidation involoves its free sulfhydryl group and is different from that required for it' e arylesterase/paraoxonase activities: selective active of human paraoxonase alloenzymes Q and R 显示文摘 | Aviram M Billecke S Sorenson R | 1998 | Arterioscler Thromb Vasc Biol1998，10，： | 1 |
| 19 | Pomegranate juice consumption reduces oxidative stress, atherogenic modifications to LDL, and platelet aggregation: studies in humans and in atherosclerotic apolipoprotein E-deficient mice 显示文摘 | Aviram M Dornfeld L Rosenblat M | 2000 | Am J Clinl Nutr2000，，71： | 1 |
| 20 | Pomegranate juice consumption reduces oxidative stress, atherogenic modifications to LDL, and platelet aggregation: studies in humans and in atherosclerotic apolipoprotein E-deficient mice 1, 2显示文摘 | Aviram M Dornfeld L Rosenblat M | 2000 | The American Journal of Clinical Nutrition2000，71，5： | 1 |
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