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| 1 | NUMERICAL SIMULATION OF BUBBLE FLOW INTERACTIONS显示文摘Bubble flow interaction can be important in many practical engineering applications. For instance,cavitation is a problem of interaction between nuclei and local pressure field variations including turbulent oscillations and large scale pressure variations. Various types of behaviours fundamentally depend on the relative sizes of the nuclei and the length scales of the pressure variations as well as the relative importance of bubble natural periods of oscillation and the characteristic time of the field pressure variations. Similarly,bubbles can significantly affect the performance of lifting devices or propulsors. We present here some fundamental numerical studies of bubble dynamics and deformation,then a practical method using a multi-bubble Surface Averaged Pressure(DF-Multi-SAP) to simulate cavitation inception and scaling,and connect this with more precise 3-D simulations. This same method is then extended to the study of two-way coupling between a viscous compressible flow and a bubble population in the flow field. | CHAHINE Georges L. | 2009 | Journal of Hydrodynamics2009，21，3： | 14 |
| 2 | EFFECT OF A PROPELLER AND GAS DIFFUSION ON BUBBLE NUCLEI DISTRIBUTION IN A LIQUID显示文摘A multi-bubble dynamics code accounting for gas diffusion in the liquid and through the bubble wall was developed and used to study the modification of a bubble nuclei population dynamics by a propeller.The propeller flow field was obtained using a Reynolds-Averaged Navier-Stokes(RANS) solver and bubble nuclei populations were propagated in this field.The numerical pro-cedure enabled establishment of the possibility of production behind the propeller of relatively large visible bubbles starting from typical ocean nuclei size distributions.The resulting larger bubbles are seen to cluster in the blade wakes and tip vortices.Parametric investigations of the initial nuclei size distribution,the dissolved gas concentration,and the cavitation number were conducted to ide-ntify their effects on bubble entrainment and the resultant void fractions and bubble distribution modifications downstream from the propeller.Imposed synthetic turbulence-like fluctuations unto the average RANS flow field were also used to study the effect avera-ging in the RANS procedure has on the results. | HSIAO Chao-Tsung CHAHINE Georges L. | 2012 | Journal of Hydrodynamics2012，24，6： | 7 |
| 3 | 活性炭/沸石层状床氢气纯化穿透曲线热效应显示文摘应用变压吸附技术对氢气混合气进行分离提纯是制取高纯度氢气的有效途径。本文主要研究多组分气体在活性炭/沸石层状床中穿透曲线的热效应影响,基于多物理场仿真平台Comsol,建立了多组分气体在多孔介质中的吸附、传热与传质模型。并将模拟值与实验数据进行验证分析,探索吸附过程伴随的热效应对穿透曲线的影响机理。最后针对变压吸附氢气纯化系统运行参数研究了环境温度、吸附条件和活性炭与沸石层高度比等对穿透曲线的影响。 | 彭育志 明越 肖金生 BNARD Pierre CHAHINE Richard | 2016 | 工程热物理学报2016，37，7： | 5 |
| 4 | Investigation of the hydrogen adsorbed density inside the pores of MOF-5 from path integral grand canonical Monte Carlo at supercritical and subcritical temperature显示文摘我们在 MOF-5 上检验氢的吸附等温线的高密度限制。等温线在压力范围上用量 GCMC 模拟被计算: 0-150 ? atm ( 1 ? atm ?=? 1.01325 ??猼'T资??????￣?猼'T???????????????????????????????????????????????搠楥瑮牥慣慬楴湯?? | David Durette Pierre Benard Renju Zacharia Richard Chahine | 2016 | Science Bulletin2016，61，8： | 3 |
| 5 | Cervical cellulitis and mediastinitis following esophageal perforation:A case report显示文摘Chicken bone is one of the most frequent foreign bodies (FB) associated with upper esophageal perforation. Upper digestive tract penetrating FB may lead to life threatening complications and requires prompt management. We present the case of a 52-year-old man who sustained an upper esophageal perforation associated with cervical cellulitis and mediastinitis. Following CT-scan evidence of FB penetrating the esophagus, the impacted FB was successfully extracted under rigid esophagoscopy. Direct suture was required to close the esophageal perforation. Cervical and mediastinal drainage were made immediately. Naso- gastric tube decompression, broad-spectrum intravenous antibiotics, and parenteral hyperalimentation were administered for 10 d postoperatively. An esophagogram at d 10 revealed no leak at the repair site, and oral alimentation was successfully reinstituted. Conclusion: Rigid endoscope management of FB esophageal penetration is a simple, safe and effective procedure. Primary esophageal repair with drainage of all affected compartments are necessary to avoid life-threatening complications. | Christian A Righini Basilide Z Tea Emile Reyt Karim A Chahine | 2008 | World Journal of Gastroenterology2008，14，9： | 3 |
| 6 | EXPERIMENTAL AND NUMERICAL INVESTIGATION OF BUBBLE AUGMENTED WATERJET PROPULSION显示文摘This contribution presents experimental and numerical investigations of the concept jet propulsion augmentation using bubble injection. A half-3D (D-shaped cylindrical configuration to enable optimal visualizations) divergent-convergent nozzle was designed, built, and used for extensive experiments under different air injection conditions and thrust measurement schemes. The design, optimization, and analysis were conducted using numerical simulations. The more advanced model was based on a two-way coupling between an Eulerian description of the flow field and a Lagrangian tracking of the injected bubbles using our Surface Averaged Pressure (SAP) model. The numerical results compare very favorably with nozzle experiments and both experiments and simulations validation the thrust augmentation concept. For a properly designed nozzle and air injection system, air injection produces net thrust augmentation, which increases with the rate of bubble injection. Doubling of thrust was measured for a 50% air injection rate. This beneficial effect remains at 50% after account for liquid pump additional work to overcome increased pressure by air injection. | CHOI Jin-Keun SINGH Sowmitra HSIAO Chao-Tsung CHAHINE Georges L | 2012 | Journal of Hydrodynamics2012，24，5： | 3 |
| 7 | 差示扫描量热法研究皮革和羊皮纸的湿热稳定性显示文摘差示扫描量热法(DSC)可以用来研究胶原蛋白变性与焓变之间的关系,收缩是胶原变性的宏观表现。对生皮、皮革和羊皮纸的损伤可能表现为变性温度(Td)和/或焓变的降低,这些变化与其他化学和力学特性相关。DSC是一种既精细又易行的用于判定皮革或羊皮纸变性的方法。对于皮革ΔH意味着较小的Td,而对于羊皮纸,焓发生了变化而Td没有改变。对古老皮革的研究尤其说明了皮革的退化状态与其热稳定性显然没有关系。 | Chahine 杨文华 | 2011 | 西部皮革2011，，4： | 3 |
| 8 | ACOUSTIC MEASUREMENTS BUBBLES IN BIOLOGICAL TIESSURE显示文摘An acoustic based instrument, the ABS Acoustic Bubble Spectrometer?? (ABS), was investigated for the detection and quantification of bubbles in biological media. These include viscoelastic media (blood), materials of varying density (bone in tissue), non-homogenous distribution of bubbles (intravenous bubbly flow), and bubbles migrating in tissue (decompression sickness, DCS). The performance of the ABS was demonstrated in a series of laboratory experiments. Validation of the code was performed using a viscoelastic polymer solution, Polyox, in which the bubble size distribution and void fraction were determined by ABS measurements and with image analysis of high speed videos. These tests showed that the accuracy of the ABS was not significantly affected by viscoelasticity for bubbles smaller than 200 microns. The ABS detection and measurement of non-homogenous bubble distributions was demonstrated using a bubbly flow through a simulated vein surrounded by tissue. The scatter of acoustic signals due to bones in the acoustic pathway was also investigated. These in-vitro experiments were done using meat (beef) as a tissue simulant. Decompression experiments were done using beef meat which was held underwater at high pressure (9.9 atm) then rapidly decompressed. Bubble size distributions and void fraction calculations in these experiments were then validated using image analysis of high speed video. In addition, preliminary experiments were performed with the US Navy Medical Research Center, demonstrating the utility of the modified ABS system in detecting the evolution of bubbles in swine undergoing decompression sickness (DCS). These results indicate that the ABS may be used to detect and quantify the evolution of bubbles in-vivo and aid in the monitoring of DCS. | CHAHINE Georges L. TANGUAY Michel LORAINE Greg | 2009 | Journal of Hydrodynamics2009，21，1： | 3 |
| 9 | The effects of venture capital syndicate diversity on earnings management and performance of IPOs in the US and UK: An institutional perspective显示文摘 | Salim Chahine Jonathan D. Arthurs Igor Filatotchev Robert E. Hoskisson | 2011 | Journal of Corporate Finance2011，，1： | 2 |
| 10 | Effect of deep transverse friction massage vs stretching on football players’ performance显示文摘BACKGROUND Flexibility,agility and muscle strength are key factors to either win or lose a game.Recently the effect of a new technique,deep transverse friction massage(DTFM)on muscle extensibility as compared to traditional stretching techniques has been examined.AIM To compare the effect of DTFM vs static and dynamic stretching techniques on the hamstring’s extensibility,agility,and strength amongst Lebanese and Syrian football players.Recording the incidence of non-contact hamstring muscle injury was a secondary objective.METHODS This study is a single-blinded prospective longitudinal randomized controlled trial.The experiment took place over a period of four weeks.Football players were randomized into three intervention groups(static stretching;dynamic stretching;DTFM).Participants of each group were followed-up carefully by assessors during their intervention sessions three times per week,for a total of 12 sessions and during the data collection.Extensibility,agility,and strength were compared between intervention groups at(baseline;acute;and chronic)phases.Straight leg raise and 1 repetition maximum tests were used to measure the dominant leg hamstring muscle extensibility and maximal strength respectively.T-drill test was used to assess the lower extremities agility.RESULTS Of 103 Lebanese and Syrian male football players aged between 18 and 35 were sampled from Damascus-Syria and South of Lebanon to participate in this study.Between-groups measures of acute strength(P=0.011)and chronic extensibility(P=0.000)solely showed a significant difference,and the static group showed to be superior as compared to the other groups.No loss to follow-up or protocol violation was recorded.CONCLUSION Static stretching is showing to be superior to the other techniques used,regarding gaining long-term extensibility and short-term maximal muscle strength.In addition,DTFM showed improvements but did not outweigh the effects on footballers’performance when comparing it to static and dynamic techniques.Finally,no difference between the interventions is recorded regarding the rate of muscle injuries incidence. | Mohammed Ali Fakhro Hussein Chahine Hassan Srour Kasim Hijazi | 2020 | World Journal of Orthopedics2020，11，1： | 2 |
| 11 | Effect of CuO on the structure and properties of (50-x/2)Na《,2》O-xCuO-(50-x/2)P《,2》O《,5》glasses显示文摘 | CHAHINE A ET-TABIROU M ELBENAISSI M | 2004 | Mater Chem Phys2004，84，23： | 1 |
| 12 | Protective effect of taurine against free radicals damage in the rat myocardium显示文摘 | HANNA J CHAHINE R AFTIMOS G | 2004 | Exp Toxicol Pathol2004，56，3： | 1 |
| 13 | Shareholders' Rights and the Effect of the Origin of Venture Capital Firms on the Under- pricing of US IPOs 显示文摘 | Salim Chahine and Samer Saade | 2011 | Corporate Governance: An International Review2011，19，06： | 1 |
| 14 | Myocardial bridges in man:Clinicalcorrelations and angiographic accentuation with nitroglycerine显示文摘 | Ishimori T Raizner AE Chahine RA | 1977 | Cathet Cardiovasc Diagn1977，3，： | 1 |
| 15 | Magnetic measurements: a powerful tool in magnetic refrigerator design 显示文摘 | Foldeaki M Chahine R Bose T K | 1995 | J Appl Phys1995，77，： | 1 |
| 16 | Simulation of surface piercing body coupled response to underwater bubble dynamics utilizing 3DYNAFS, a three-dimensional BEM code显示文摘 | CHAHINE G L KALUMUCK K M HSIAO C T | 2003 | Computational Mechanics2003，32，2： | 1 |
| 17 | Transferrins:iron release from lactoferrin显示文摘 | Abdallah F B Chahine J E | 2000 | J Molecular Biology2000，，303： | 1 |
| 18 | The use of cavitation jets to oxidzeorganic compounds in water显示文摘 | Kalumuck K M Chahine G L | 2000 | Journal of Fluids Engineering2000，122，3： | 1 |
| 19 | The hydrological cycle and its influence on climate显示文摘 | CHAHINE T M | 1992 | Nature1992，359，： | 1 |
| 20 | Simulation of surface piercing body coupled response to underwater bubble dynamics utilizing 3DYNAFS, a three-dimensional BEM code 显示文摘 | CHAHINE G L KALUMUCK K M HSIAO C T | 2003 | Computational Mechanics ( S1007 - 0466 )2003，32，： | 1 |
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