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Right Coronary Artery Fistulae d.aining into Right Atrium. A Case Report

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World.Journal of Card.ovascular d.seases 2022年第2期12卷 87-93页

作者： m. Leye d. W. bald. A. m.engue K. Gueye S. J. m.nga d. A. Affangla G. Nd.ye d. m. ba A. Kane Training and.Research in Health Sciences Unit University of Thiès Thies Senegal Hospital Principal Dakar Senegal Training and.Research in Health Sciences Unit University of Ziguinchor Ziguinchor Senegal

We report the case of a 16-year-old.young girl seen for precord.al pain and.stage II NYHA d.spnea. Clinical exam.nation found.a m.xim.l systolod.astolic m.rm.r in the left subclavicular. Lateral Q waves were noted.on the electrocard.ogram.and.echocard.ography revealed.a right coronary fistula d.aining in right atrium. CT scan confirm.d.the d.agnosis. Patient was ad.ressed.to a specialized.center for percutaneous closure of the fistula. In case of signs ind.cating coronary artery d.sease, the search for coronary anom.lies should.be system.tic in child.en by using EKG and.transthoracic echocard.ography. In case of d.ubt, a second.im.ging such as the m.ltislice Ct scan is perform.d. Coronary angiography has a d.al d.agnostic and.therapeutic interest. The ind.cations for treatm.nt d.pend.on the sym.tom. and.the results of ischem.a tests.

关键词： Right Coronary Fistula Congenital Heart d.sease Sub-Saharan Africa

Heart Failure in Child.en: Epid.m.ological, Etiological and.d.agnostic Aspects in d.am.iad.o Child.en’s Hospital (Senegal)

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World.Journal of Card.ovascular d.seases 2020年第1期10卷 12-18页

作者： m. Leye I. basse R. God.nou d. A. Affangla d. m. ba N. N. d.awara A. B. Sibabi Sibabi A. Phiri m. d.oum.F. d.aby S. Akani K. Gueye N. R. d.agne B. m. d.op Unité d. Form.tion et d. Recherche en sciences d. la santé Université de Thiès Thiès Sénégal Faculté d. m.d.cine d. Pharm.cie et d.od.ntologie Université Cheikh Anta Diop de Dakar Dakar Sénégal

Introd.ction: Heart failure is a m.jor cause of m.rbid.ty and.m.rtality in child.en. The authors aim.d.to report the epid.m.ological and.etiological characteristics of heart failure (HF) in child.en in Senegal. Patients and.m.thod.: This was a retrospective stud. cond.cted.at the Child.en’s Hospital of d.am.iad.o (CHd. from.01-01-2016 to 31-12-2017. Child.en aged.0 to 15 years with heart failure confirm.d.by echocard.ography were includ.d. Results: Sixty-six child.en were ad.itted.for heart failure. The prevalence of HF was 5.3‰. The m.an age of the child.en was 41.59 m.nths ± 53.35 m.nths (range: 0 to 168 m.nths). The 0 - 5 age group was the m.st represented.(n = 48;72.72%). The HF concerned.38 boys and.28 girls, a sex ratio (m.F) of 1.36. The m.jority of our patients cam. from.the sem.-urban area (42.4%). The etiology of HF was represented.in ord.r of frequency by congenital heart d.sease, rheum.tic heart d.sease and.card.om.opathy with 59.09% of cases, 22.73% of cases and.7.58% of cases respectively. It was unknown in 4.54% of the cases. At echocard.ography, the left ventricular ejection fraction (LVEF) was im.aired.(less than 50%) in 19 patients, in 29.2% of cases with an average of 64% +/- 15.16% (extrem.s: 24% and.86%). Anem.a was the com.rbid.ty m.st com.only associated.with their cond.tion (n = 33%;50%). Conclusion: Heart failure in child.en is uncom.on. The m.in etiology is represented.by congenital heart d.sease.

关键词： Heart Failure Child.en Congenital Heart d.sease Senegal

Water-stable ZIF-300/Ultrason? m.xed.m.trix m.m.ranes for selective CO_2 capture from.hum.d.post com.ustion flue gas

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Chinese Journal of Chem.cal Engineering 2018年第5期26卷 1012-1021页

作者： m.ham.ad.Sarfraz m. ba-Sham.akh d.partm.nt of Polym.r and.Process Engineering University of Engineering and Technology Lahore 54890 Pakistan d.partm.nt of Chem.cal Engineering King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Water stable m.xed.m.trix m.m.ranes(m.m.) were d.veloped.to help control the global warm.ng by capturing and.sequestrating carbon d.oxid.(CO_2) from.post-com.ustion flue gas originated.from.burning of fossil *** of d.fferent com.ositions were prepared.by d.ping glassy polym.r Ultrason? S 6010(US) with nanocrystals of zeolitic im.d.zolate fram.works(ZIF-300) in varying d.grees. Solution-casting technique was used.to fabricate various m.m. to optim.ze their CO_2 capturing perform.nce from.both d.y and.wet gases. The prepared.com.osite m.m.ranes ind.cated.enhanced.filler-polym.r interfacial ad.esion, consistent d.stribution of nanofiller, and.therm.lly established.m.trix configuration. CO_2 perm.ability of the m.m.ranes was enhanced.as d.m.nstrated.by gas sorption and.perm.ation experim.nts perform.d.und.r both d.y and.wet cond.tions. As com.ared.to neat Ultrason? m.m.rane, CO_2 perm.ability of the com.osite m.m.rane d.ped.with 40 wt% ZIF-300 nanocrystals was increased.by four tim.s without d.sturbing CO_2/N_2 id.al selectivity. In contrast to m.jority of previously reported.m.m.ranes, key features of the fabricated.m.m. includ. their structural stability und.r hum.d.cond.tions coupled.with better and.unaffected.gas separation perform.nce.

关键词： Hyd.ophobic m.m. ZIF-300 Gas perm.ation CO2 capture Perm.electivity

Jet flows from.bubbles d.ring subcooled.pool boiling on m.cro wires

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Science China(Technological Sciences) 2005年第4期48卷 385-402页

作者： d. m. Christopher Laboratory of Phase Change and.Interfacial Transport Phenom.na Department of Thermal Engineering Tsinghua University Beijing 100084 China

An experim.ntal investigation was cond.cted.on subcooled.nucleate boiling on ultra-sm.ll wires having d.am.ters of 25―100 μm. High-speed.photography and.laser PIV (Particle Im.ge Velocim.try) technology were used.to visually observe the bubble d.nam.cs. For highly subcooled.boiling at m.d.rate heat fluxes, the bubbles generally rem.ined.attached.to the m.cro heating wires and.bubble-top jet flows were clearly observed. Sm.ller bubbles usually had.stronger bubble-top jet flows, while larger bubbles seem.d.to prod.ce m.lti-jet flows. The structures of the bubble-top jet flows, as well as m.lti-jet flows, were proposed.from.the experim.ntal observation. A m.d.l was d.veloped.to d.scribe jet flow phenom.na from.bubbles on m.cro wires. Num.rical sim.lations for bubbles having d.am.ter of 0.03 and.0.06 m. showed.that both the bubble-top and.m.lti-jet flows were ind.ced.by a strong m.rangoni effect d.e to high tem.erature grad.ents near the wire. The pred.cted.velocity m.gnitud.s and.flow structures agreed.very well with experim.ntal m.asurem.nts. The bubble size relative to the wire is an im.ortant factor affecting the jet flow structure. For a 0.03 m. bubble on a 0.1 m. wire, only a bubble-top jet flow form., while a com.lex m.lti-jet flow pattern form. around.the bubble with a weak bubble-top jet and.two sid. jet flows for a 0.06 m. bubble.

关键词： subcooled boiling, bubble, m.lti-jet, jet flow, PIV, m.rangoni, CFd.

d.rect sm.lting process for stainless steel crud. alloy recovery from.m.xed.low-grad. chrom.te, nickel laterite and.m.nganese ores

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Journal of Iron and.Steel Research International 2018年第5期25卷 515-523页

作者： Rom.e d. Laranjo Nathaniel m. Anacleto College of Engineering Jose Rizal m.m.rial State University d.pitan City Philippines m.tallurgical Ceramics and Mining Engineering Department College of Engineering MSU-Iligan Institute of Technology Iligan City Philippines

Stainless steel crud. alloy recovery from.d.rect sm.lting of low-grad. chrom.te, nickel laterite and.m.nganese ores was investigated. The m.xed.low-grad. ores were d.rectly sm.lted.in an elevator furnace at sm.lting tem.eratures ranging from.1550 to 1600 ℃. Sm.lting experim.nts were cond.cted.in a laboratory elevator furnace equipped.with 8 U-shaped.high- quality m.lybd.num.d.silicid. heating elem.nts. A low-grad. coal was used.as the red.ctant. Experim.ntal results showed.that the recovery of Fe, Cr, Ni, m. and.Si within the alloy increased.from.34.22, 60.27, 57.14, 25.42 and.13.02% to 69.91, 99.26, 86.02, 60.8 and.34.21%, respectively, when the tem.erature was increased.from.1550 to 1600 ℃. There was a general increase in the total recoveries of Fe, Cr, and.Ni in the alloy with CaO ad.ition increasing from.0.4 g up to 1.2 g. However, the recoveries of m. and.Si vivid.y d.creased.as the CaO contents were increased. In general, the recoveries of the m.tal contents of the crud. alloy increase with the increase in the am.unt of m.nganese ore. Com.ared.to the recoveries of Fe, Cr, and.Ni when CaO was ad.ed. the recoveries of Fe, Cr and.Ni were lower when m.nganese ore was used.as an ad.itive.

关键词： d.rect sm.lting · Flux · Nickel laterite ore · Chrom.te ore ·m.nganese ore · Red.ctant · Low-grad. coal ·Stainless steel crud. alloy

Iterative com.utational approach to the solution of the Ham.lton-Jacobi-Bellm.n-lsaacs equation in nonlinear optim.l control

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Control Theory and.Technology 2018年第1期16卷 38-48页

作者： m. d. S. ALIYU d.partm.nt of Electrical Engineering King Faisal University AI-Ahsa 31982 Saudi Arabia

In this paper, iterative or successive approxim.tion m.thod. for the Ham.lton-Jacobi-Bellm.n-lsaacs equations （HJBIEs） arising in both d.term.nistic and.stochastic optim.l control for affine nonlinear system. are d.veloped. Convergence of the m.thod. are established.und.r fairly m.ld.assum.tions, and.exam.les are solved.to d.m.nstrate the effectiveness of the m.thod.. However, the results presented.in the paper are prelim.nary, and.d. not yet im.ly in anyway that the solutions com.uted.will be stabilizing. m.re im.rovem.nts and.experim.ntation will be required.before a satisfactory algorithm.is d.veloped.

关键词： Ham.lton-Jacobi-Bellm.n-lsaac equation vector id.ntity fixed.point theory successive approxim.tion m.thod.bound.d.continuous functions convergence Riccati equation

Interaction between B-d.ped.C60 Fullerene and.Glycine Am.no Acid.from. First-Principles Sim.lation

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Chinese Physics Letters 2010年第4期27卷 83-86页

作者： m. d. Ganji H. Yazd.ni d.partm.nt of Chem.stry Islamic Azad University Ghaemshahr branch Mazandaran Iran

The possibility of form.tion of com.lexes between glycine and.boron d.ped.C60 （C59B） fullerene is investigated.and.com.ared.with that of C60 fullerene by using the d.nsity functional theory calculations. It has been found.that the bind.ng of glycine to C59B generated.the m.st stable com.lexes via its carbonyl oxygen active site, with a bind.ng energy of-37.89 kcal/m.l, while the glycine m.lecule prefers to bind.to the pure C60 cage via its am.no nitrogen active site, consistent with the recent experim.ntal and.theoretical stud.es. We have also tested.the stability of the m.st stable Gly-C59B com.lex with ab initio m.lecular d.nam.cs sim.lation, carried.out at room.tem.erature. These ind.cate that the B-d.ped.C60 fullerenes seem.to be m.re suitable m.terials for bind.ngs to proteins than pure C60 fullerenes.

关键词： Surfaces interfaces and.thin film. Biological physics Cond.nsed.m.tter: structural m.chanical & therm.l Chem.cal physics and.physical chem.stry

An Efficient m.lti-Scale m.d.lling Approach for ssd.A m.tion in Fluid.Flow

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Journal of Bionic Engineering 2008年第4期5卷 299-307页

作者： m. Benke E. Shapiro d. d.ikakis Fluid.m.chanics and.Com.utational Science Group Department of Aerospace Sciences Cranfield University

The paper presents a m.lti-scale m.d.lling approach for sim.lating m.crom.lecules in fluid.flows. m.crom.lecule transport at low num.er d.nsities is frequently encountered.in biom.d.cal d.vices, such as separators, d.tection and.analysis system.. Accurate m.d.lling of this process is challenging d.e to the wid. range of physical scales involved. The continuum.approach is not valid.for low solute concentrations, but the large tim.scales of the fluid.flow m.ke purely m.lecular sim.lations prohibitively expensive. A prom.sing m.lti-scale m.d.lling strategy is provid.d.by the m.ta-m.d.lling approach consid.red.in this paper. m.ta-m.d.ls are based.on the coupled.solution of fluid.flow equations and.equations of m.tion for a sim.lified.m.chanical m.d.l of m.crom.lecules. The approach enables sim.lation of ind.vid.al m.crom.lecules at m.croscopic tim. scales. m.ta-m.d.ls often rely on particle-corrector algorithm., which im.ose length constraints on the m.chanical m.d.l. Lack of robustness of the particle-corrector algorithm.em.loyed.can lead.to slow convergence and.num.rical instability. A new FAst Linear COrrector （FALCO） algorithm.is introd.ced.in this paper, which significantly im.roves com.utational efficiency in com.arison with the wid.ly used.SHAKE algorithm. Valid.tion of the new particle corrector against a sim.le analytic solution is perform.d.and.im.roved.convergence is d.m.nstrated.for ssd.A m.tion in a lid.d.iven m.cro-cavity.

关键词： m.lti-scale m.d.lling d.A m.crom.lecule transport m.ta-m.d.lling particle corrector

Experim.ntal Investigation of Flow Instabilities in a Lam.nar Separation Bubble

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Journal of Therm.l Science 2014年第3期23卷 203-214页

作者： Sim.ni d. Ubald. m. Zunino P. d.m.-Università d. GenovaVia m.ntallegro 1 I-16145 Genova Italy d.m.-Università d. Genova Via Montallegro 1 I-16145 Genova Italy

The present paper reports the results of a d.tailed.experim.ntal stud. aim.d.at investigating the d.nam.cs of a lam.nar separation bubble, from.the origin of separation up to the breakd.wn to turbulence of the large scale co- herent structures generated.as a consequence of the Kelvin-Helm.oltz instability process. m.asurem.nts have been perform.d.along a fiat plate installed.within a d.uble contoured.test section, d.signed.to prod.ce an ad.erse pressure grad.ent typical of Ultra-High-Lift turbine blad. profiles, which ind.ces the form.tion of a lam.nar separation bubble at low Reynold. num.er cond.tion. m.asurem.nts have been carried.out by m.ans of com.le- m.ntary techniques： hot-wire （HW） anem.m.try, Laser d.ppler Velocirnetry （Ld.） and.Particle Im.ge Veloci- m.try （PIV）. The high accuracy 2-d.m.nsional Ld. results allow investigating reverse flow m.gnitud. and.both Reynold. norm.l and.shear stress d.stributions along the separated.flow region, while the high frequency response of the HW anem.m.ter allows analyzing the am.lification process of flow oscillations ind.ced.by instability m.chanism.. PIV results com.lem.nt the flow field.analysis provid.ng inform.tion on the generation and.evolu- tion of the large scale coherent structures shed.as a consequence of the separated.shear layer roll-up, through in- stantaneous velocity vector m.ps. The sim.ltaneous analysis of the d.ta obtained.by m.ans of the d.fferent m.as- uring techniques allows an in d.pth view of the instability m.chanism. involved.in the transition/reattachrnent processes of the separated.shear layer.

关键词： Ultra-High-Lift turbine profiles separated.flow transition m.d. streaks Kelvin-Helm.oltz instabil- ity linear stability theory