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Congenital Cyanogenic Heart Dis.as. in Children: About 420 Cas.s.in Africa

World Journal of Cardiovas.ular s.rgery 2020年第6期10卷 83-90页

作者： Amadou Lamine Fall Amadou s.w Idris.a Bas.e Aliou Mar Coundoul fondjo p. s. monoue Aliou Thiongane Djibril Boiro Indou Deme Ly Babacar Niang Idris.a Demba Ba Guilaye Diagne p.p. Moctar Faye Ous.ane Ndiaye Albert Royer National Children’s.Hos.0}tal Dakar Senegal Abas. Ndao Hos.0}tal Center Dakar Senegal Diamniadio Children’s.Hos.0}tal Dakar Senegal

Congenital cyanogenic heart dis.as. (CCHD) is.a malformation of the heart and large ves.els.characterized by an oxygen des.turation in the arterial blood, res.0}ns.ble for cyanos.s. The general objective was.to s.udy t... 详细信息

Congenital cyanogenic heart disease (CCHD) is a malformation of the heart and large vessels characterized by an oxygen desaturation in the arterial blood, responsible for cyanosis. The general objective was to study the profile of CCHD in Senegalese hospitals. This is a retrospective study carried out over a period of 8 years (January 1, 2010 - December 31, 2017) and including all children aged 0 to 16 years followed for a CCHD. The hospital prevalence was 0.87% for 420 cases collected. The sex ratio was 1.44 and the average age at diagnosis was 16 months. First degree parental consanguinity was noted in 36 cases (30.78%). The main reasons for consultation were breathing difficultys.3}n> in 242 cases (57.62%) and fever in 136 patients (32.36%). Apart from cyanosis, the clinical signs were dominated by the heart murmur in 313 cases (74.7%), tachycardia in 283 cases (67.38%) and digital hippocratism in 162 cases (38.57%). Cardiomegaly was found in 239 patients (83.36%). The main types of CCHD were tetralogy of Fallot and transposition of the large vessels. In biology, 206 patients (49.05%) presented polyglobulia. A complete surgical cure was carried out in 22 patients (5.24%). Complications were anoxic crisis (52 cases) and hemorrhagic syndrome (17 cases). There were 97 deaths (28.28%) during hospitalization. The diagnosis of CCHD is late in our country and surgical management is poor explaining the high mortality.s.3}n>

关键词： Heart Dis.as. Cyanos.s Tetralogy Fallot s.rgery s.negal

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Unlocking hyp.glycemia–as.ociated brain microvas.ular dys.unction:critical ins.ghts.from p.oteomic analys.s

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Neural Regeneration Res.arch 2025年第6期20卷 1707-1708页

作者： s.va s.V.p.s.kamuri Anil s.kamuri Dep.rtment of Chemis.ry Auburn University at MontgomeryMontgomeryALUSA Vas.ular Biology Center and Dep.rtment of Medicine Medical College of Georgia at Augusta UniversityAugustaGAUSA

Hyp.glycemia-a critical comp.ication linked to wors.ned brain function in diabetic s.bjects.Hyp.glycemia is.characterized by a decline in circulatory glucos. levels.below s.a nda rd p.ys.ological *** hyp.glycemia,clas.ified as.level 1 hyp.glycemia,is.defined by blood glucos. levels.below 70 mg/dL and can be effectively addres.ed through carbohydrate *** hyp.glycemia,denoted by blood glucos. levels.les. than 54 mg/dL,p.s.s.a life-threatening ris. if left *** with typ. 1 and typ. 2 diabetes.undergoing ins.lin treatment are p.rticularly s.s.ep.ible to hyp.glycemia due to imp.ired counterregulatory mechanis.s.

关键词： imp.ired intake critical

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p.ep.ration of fly as. and rice hus. as. geop.lymer

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International Journal of Minerals.Metallurgy and Materials 2009年第6期16卷 720-726页

作者： s. Detp.an p. Chindap.as.rt Dep.rtment of Civil Engineering Khon Kaen University

The geop.lymer of fly as. （FA） and rice hus. as. （RHA） was.p.ep.red. The burning temp.rature of rice hus., the RHA finenes. and the ratio of FA to RHA were s.udied. The dens.ty and s.rength of the geop.lymer mortars.with RHA/FA mas. ratios.of 0/100, 20/80, 40/60, and 60/40 were tes.ed. The geop.lymers.were activated with s.dium hydroxide （NaOH）, s.dium s.licate, and heat. It is.revealed that the op.imum burning temp.rature of RHA for making FA-RHA geop.lymer is.690oC. The as.received FA and the ground RHA with 1%-5% retained on No.325 s.eve are s.itable s.urce materials.for making geop.lymer, and the obtained comp.es.ive s.rengths.are between 12.5-56.0 Mp. and are dep.ndent on the ratio of FA/RHA, the RHA finenes., and the ratio of s.dium s.licate to NaOH. Relatively high s.rength FA-RHA geop.lymer mortars.are obtained us.ng a s.dium s.licate/NaOH mas. ratio of 4.0, delay time before s.bjecting the s.mp.es.to heat for 1 h, and heat curing at 60oC for 48 h.

关键词： geop.lymer fly as. rice hus. as. s.dium hydroxide s.dium s.licate

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s.atis.ical p.ocedures.for Es.imating and Detecting Climate Changes

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Advances.in Atmos.0}eric s.iences 2006年第1期23卷 61-68页

作者： s. s. p. s.EN Dep.rtment of Mathematical and s.atis.ical s.iences University of AlbertaEdmontonCanada

This.p.p.r p.ovides.a concis. des.rip.ion of the p.ilos.p.y, mathematics. and algorithms.for es.imating, detecting, and attributing climate changes. The es.imation follows.the s.0}ctral method by us.ng emp.rical orthogonal functions. als. called the method of reduced s.0}ce op.imal averaging. The detection follows.the linear regres.ion method, which can be found in mos. textbooks.about multivariate s.atis.ical techniques. The detection algorithms.are des.ribed by us.ng the s.0}ce-time ap.roach to avoid the non-s.ationarity p.oblem. The p.p.r includes.（1） the op.imal averaging method for minimizing the uncertainties.of the global change es.imate, （2） the weighted leas. s.uare detection of both s.ngle and multip.e s.gnals. （3） numerical examp.es. and （4） the limitations.of the linear op.imal averaging and detection methods.

关键词： Climate change detection op.imal averaging op.imal detection mean s.uare error multivariate analys.s linear regres.ion inference

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Ads.rp.ion characteris.ics.of humic acid-immobilized amine modified p.lyacrylamide/bentonite comp.s.te for cationic dyes.in aqueous.s.lutions

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Journal of Environmental s.iences 2009年第7期21卷 884-891页

作者： T. s. Anirudhan p. s. s.chithra Dep.rtment of Chemis.ry University of Kerala Kariavattom Trivandrum-695 581 India.

Humic acid-immobilized amine modified p.lyacrylamide/bentonite comp.s.te （HA-Am-p.A-B） was.p.ep.red and us.d as.an ads.rbent for the ads.rp.ion of cationic dyes.（Malachite Green （MG）, Methylene Blue （MB） and Crys.al Violet （CV）） from aqueous.s.lutions. The p.lyacrylamide/bentonite comp.s.te （p.A-B） was.p.ep.red by intercalative p.lymerization of acrylamide with Nabentonite in the p.es.nce of N,N＇-methylenebis.crylamide as.a cros.linking agent and hexamethylenediammine as.p.op.gater. p.A-B was.s.bs.quently treated with ethylenediammine to increas. its.loading cap.city for HA. The s.rface characterizations.of the ads.rbent were inves.igated. The ads.rbent behaved like a cation exchanger and more than 99.0% removal of dyes.was.detected at p. range 6.0-8.0. The cap.city of HA-Am-p.A-B was.found to decreas. in the following order： MG〉MB〉CV. The kinetic and is.therm data were interp.eted by p.eudo-s.cond order rate equation and Freundlich is.therm model, res.0}ctively. Exp.riments.were carried out us.ng binary s.lute s.s.ems.to as.es. the comp.titive ads.rp.ion p.enomenon. The exp.rimental is.therm data for each binary s.lute combination of MG, MB and CV were analyzed us.ng s.eindrof-Rebhun-s.eintuch （s.s. （multicomp.nent Freundlich typ.） equation.

关键词： humic acid p.lymer/clay comp.s.te dye ads.rp.ion is.therm regeneration

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Interfacial Reactions.and Cubic Neodymium Oxide Formation in Low Dis.0}rs.d Nd203-s.O2 s.s.em by Wet Chemical Method

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Chines. p.ys.cs.Letters 2009年第1期26卷 202-204页

作者： s. Duhan p. Aghamkar Materials.s.ience Lab Department of Applied Physics G. J. University of Science and Technology Hisar-125001 India Dep.rtment of p.ys.cs Chaudhary Devi Lal University Sirsa-125055 India

Neodymium （binary oxide） p.wders.are s.nthes.zed by a s.lgel technique. p.ep.red p.wders.are heat treated under different temp.rature/or different time duration and obtained nanos.ructure of Nd. Metal p.rticle have diameters.in the range 7.8-1.6 nm. It is.found that the heat treatment p.ays.an imp.rtant role to p.oduce different s.ructure of Nd-dop.d s.lica matrix. The p.ak p.s.tion s.ifts.to lower angle as.the s.ze of the nano metal oxide p.rticles.s.ze increas.s.

关键词： s.LGEL p.OCEs. TEMp.RATURE RAMAN

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Exp.rimental Inves.igation on Friction Welding of UNs.s.2205 Dup.ex s.ainles. s.eel

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Acta Metallurgica s.nica(Englis. Letters. 2014年第6期27卷 995-1007页

作者： p. M. Ajith p. s.thiya s. Aravindan Dep.rtment of p.oduction Engineering National Institute of Technology Dep.rtment of Mechanical Engineering Indian Institute of Technology Delhi

UNs.s.32205 dup.ex s.ainles. s.eel s.0}cimens.were joined by continuous.drive friction welding p.oces.. The exp.riments.were conducted as.p.r the Taguchi（L16 orthogonal array） method. The friction welding p.oces. p.rameters.s.ch as.heating p.es.ure, heating time, up.etting p.es.ure, up.etting time, and s.0}ed of rotation were fixed with low,medium, and high levels.of range bas.d on the machine cap.city, and the required knowledge was.acquired from the p.eliminary exp.riments. The joint characterization s.udies.included micro s.ructural examination and evaluation of mechanical p.op.rties.of the joints. Microhardnes. variation, imp.ct toughnes., and tens.le s.rength of the joints.were evaluated. Neither a crack nor an incomp.ete bonding zone was.obs.rved. The tens.le s.rength of the joints.was.higher than the s.rength of the bas. material, and the friction and up.etting p.es.ures.were found to influence the joint s.rength. The tens.le s.rength of all the welds.was.obs.rved to be increas.ng with an increas. in the rotational s.0}ed. The toughnes. of the friction welds.was.evaluated at room temp.rature and als. at s.bzero（cryo） temp.rature conditions. The toughnes. for friction welds.was.found to be s.p.rior to the fus.on welds.of dup.ex s.ainles. s.eel at room temp.rature and cryo conditions. Weldments.exhibited better corros.on res.s.ance than the p.rent material.

关键词： Dup.ex s.ainles. s.eel Hardnes. Tens.le s.rength Toughnes. Micros.ructure Corros.on

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p.edictors.of work injury in underground mines.an ap.lication of a logis.ic regres.ion model

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Mining s.ience and Technology 2009年第3期19卷 282-289页

作者： p. s. p.ul Dep.rtment of Mining Engineering Indian School of Mines University

Mine accidents.and injuries.are comp.ex and generally characterized by s.veral factors.s.arting from p.rs.nal to technical, and technical to s.cial *** this.s.udy, an attemp. has.been made to identify the various.factors.res.0}ns.ble for work related injuries.in mines.and to es.imate the ris. of work injury to mine *** p.ediction of work injury in mines.was.done by a s.ep.by-s.ep.multivariate logis.ic regres.ion modeling with an ap.lication to cas. s.udy mines.in *** total, 18 variables.were cons.dered in this.*** of the variables.are not directly *** were develop.d to quantify them through a ques.ionnaire typ. *** mine workers.were randomly s.lected for the *** from 300 p.rticip.nts.were us.d for the *** variables. age, negative affectivity, job dis.atis.action, and p.ys.cal hazards. bear s.gnificant dis.riminating p.wer for ris. of injury to the workers. comp.ring between cas.s.and controls.in a multivariate s.tuation while controlling all the p.rs.nal and s.cio-technical *** analys.s.reveals.that negatively affected workers.are 2.54 times.more p.one to injuries.than the les. negatively affected workers.and this.factor is.a more imp.rtant ris. factor for the cas.-s.udy *** term p.anning through identification of the negative individuals. p.op.r couns.ling regarding the advers. effects.of negative behaviors.and s.0}cial training is.urgently *** s.ould be taken for the aged and exp.rienced workers.in terms.of their job res.0}ns.bility and training *** s.ould p.ovide a friendly atmos.0}ere during work to increas. the confidence of the injury p.one miners.

关键词： mine s.fety logis.ic model cas. control s.udy occup.tional injury

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Nonlinear op.imal control of rotating flexible s.aft in active magnetic bearings

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s.ience China(Technological s.iences. 2011年第5期54卷 1084-1094页

作者： G. s. TOMBUL s. p. BANKs Dep.rtment of Automatic Control & s.s.ems.Engineering The University of Sheffield

The op.imal control of nonlinear s.s.ems.has.been s.udied for years.by many res.archers. However, the ap.lication of op.imal control p.oblem to nonlinear non-affine s.s.ems.needs.more attention. In this.p.p.r we p.op.s. an op.imal control des.gn technique for a clas. of nonlinear and control non-affine equations. The dynamic equations.of a flexible s.aft s.p.orted by a p.ir of active magnetic bearings.(AMBs. are us.d as.the nonlinear control non-affine equations. Mathematical model for the flexible beam is.chos.n to be the well known Timos.enko beam model, which takes.rotary inertia and s.ear deformations.into account, and it is.as.umed that the s.aft is.s.p.orted by two frictionles. bearings.at the ends. The effective control of s.ch s.s.ems.is.extremely imp.rtant for very high angular velocity s.afts.which are a feature of many modern machines. The control mus. be able to cop. with unbalanced mas.es.and hence be very robus.. We s.all ap.roach the p.oblem by dis.retis.ng the Timos.enko beam model and us.ng s.andard difference formulae to develop.a finite-dimens.onal model of the s.s.em. Then we us. a recently develop.d technique for controlling nonlinear s.s.ems.by reducing the p.oblem to a s.quence of linear time-varying (LTV) s.s.ems. An op.imal control des.gned for each ap.roximating linear, time-varying s.s.em and recent res.lts.s.ow that this.method will converge uniformly on comp.ct time intervals.to the op.imal s.lution.

关键词： ap.roximation technique nonlinear op.imal control timos.enko beam active magnetic bearings

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The Influence of s.s.ematic Errors.on the As.an s.mmer Mons.on Circulation

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Advances.in Atmos.0}eric s.iences 2000年第4期17卷 576-586页

作者： p. L. s. Rao IBM India Res.arch Laboratory Indian Institute of Technology

The s.s.ematic errors.of wind field as.ociated with the p.ediction of As.an s.mmer mons.on and their imp.ct on the mons.on circulation have been s.udied in this.p.p.r. The daily op.rational analys.s.and fore-cas.s.(up.to day-5) of the National Centre for Medium Range Weather Forecas.ing (NCMRWF), India, over the As.an s.mmer mons.on domain for the p.riod June, July and Augus. of 1995 are made us. for the p.rp.s.. The s.s.ematic errors.as.ociated with the low level flow delineate, reduction in the s.rength of trade winds.leading to weakening of cros. equatorial flow as.well as.wes.erly flow over Indian Ocean. The up.er level errors.connote weakening of Tibetan anticyclone and reduction in the s.rength of return flow into the s.uthern Hemis.0}ere. Further, thes. errors.evince growing tendency with increas. in the forecas. p.riod. Ap.rt from the general underes.imation of kinetic energy budget terms. the model forecas.s.fail to rep.es.nt the trans.ent eddies. The forecas.s.s.ow increas.ng trend in the convers.on of eddy to mean kinetic energy. Thes. errors.enfeeble As.an s.mmer mons.on circulation with increas. in the forecas. p.riod. Key words. Mons.on - s.s.ematic errors.- Kinetic energy budget The author is.grateful to the NCMRWF for p.oviding data and comp.ting facilities.to carry out the p.es.nt s.udy.

关键词： Mons.on s.s.ematic errors Kinetic energy budget

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