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您的检索式：作者名="Walid Ben Ali"
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| 1 | Modeling interaction between CO_(2),brine and chalk reservoir rock including temperature effect on petrophysical properties显示文摘Carbon dioxide(CO_(2))capture and sequestration through CO_(2)enhanced oil recovery(EOR)in oil reservoirs is one of the approaches considered to reduce CO_(2)emission into the atmosphere.The injection of CO_(2)into a subsurface geological formation may lead to chemical reactions that may affect the formation pore structure and characteristics.In this study,the effect of CO_(2)ebrineerock interaction on the rock petrophysical properties and mineral volume fraction was numerically investigated during CO_(2)injection into a chalk reservoir rock.A 3D numerical modeling and simulation were conducted using COMSOL®Multiphysics commercial software of computational fluid dynamics(CFD)to simulate CO_(2)ebrine core flooding process in a chalk core.The model was validated against a coreescale experimental data from literature.Simulation differential pressure data matched the literature experimental data closely and consistently indicating good agreement between them.Temperature effect on the performance of CO_(2)ebrineechalk sequestration was also evaluated in the present study.Results indicated that porosity was only slightly affected by temperature increase during CO_(2)injection in contrast to permeability that was substantially affected by temperature.Moreover,chemical reactions enhanced as temperature increased leading to significant increase in permeability.Thus,carbonated brine sequestration excelled at elevated temperature due to increased acidity which governs the sequestration process.The developed model maybe considered as a reliable tool to optimize various operating parameters of CO_(2)ebrine sequestration. | Hisham Ben Mahmud Walid Mohamed Mahmud Ali Al-Rubaye | 2021 | Energy Geoscience2021，2，4： | 0 |
| 2 | Anatomical morphology of the aortic valve in Chinese aortic stenosis patients and clinical results after downsize strategy of transcatheter aortic valve replacement显示文摘Background:The study aimed to describe the aortic valve morphology in Chinese patients underwent transcatheter aortic valve replacement(TAVR)for symptomatic severe aortic stenosis(AS),and the impact of sizing strategies and related procedural outcomes.Methods:Patients with severe AS who underwent TAVR were consecutively enrolled from 2012 to 2019.The anatomy and morphology of the aortic root were assessed.'Downsize'strategy was preformed when patients had complex morphology.The clinical outcomes of patients who performed downsize strategy were compared with those received annular sizing strategy.The primary outcome was device success rate,and secondary outcomes included Valve Academic Research Consortium-3 clinical outcomes variables based on 1-year follow-up.Results:A total of 293 patients were enrolled.Among them,95 patients(32.4%)had bicuspid aortic valve.The calcium volume(Hounsfield Unit-850)of aortic root was 449.90(243.15-782.15)mm3.Calcium is distributed mostly on the leaflet level.Downsize strategy was performed in 204 patients(69.6%).Compared with the patients who performed annular sizing strategy,those received downsize strategy achieved a similar device success rate(82.0%[73]vs.83.3%[170],P=0.79).Aortic valve gradients(downsize strategy group vs.annular sizing group,11.28 mmHg vs.11.88 mmHg,P=0.64)and percentages of patients with moderate or severe paravalvular regurgitation 2.0%(4/204)vs.4.5%(4/89),P=0.21were similar in the two groups at 30 days after TAVR.These echocardiographic results were sustainable for one year.Conclusions:Chinese TAVR patients have more prevalent bicuspid morphology and large calcium volume of aortic root.Calcium is distributed mostly on the leaflet level.Compare with annular sizing strategy,downsize strategy provided a non-inferior device success rate and transcatheter heart valve hemodynamic performance in self-expanding TAVR procedure. | Guannan Niu Walid Ben Ali Moyang Wang Hasan Jilaihawi Haitong Zhang Qian Zhang Yunqing Ye Xinmin Liu Jing Yao Qinghao Zhao Yubin Wang Zheng Zhou Lizhi Zhang Xinshuang Ren Yunqiang An Bin Lu Thomas Modine Yongjian Wu Guangyuan Song | 2022 | Chinese Medical Journal2022，135，24： | 0 |
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