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Prevalen.e an. Pattern.of In.estin.l Parasitic In.estation. amon. HIV In.ected Children.in.Lagos, n.geria

Journ.l of Bioscien.es an. Medicin.s 2020年第12期8卷 58-67页

作者： Agatha n. David Agatha E. Wapmuk Jan. O. Okwuzu Titilola A. Gbaja-Biamila Oluwadamilola Ogun.in. Oluwatosin.O. Odubela Oluwatosin.O. Odubela Babasola A. Opan.ye Priscilla n. Ezemelue Tomilola E. Musari-Martin. olamilekan n. rahman Abideen.O. Salako Clin.cal Scien.es Departmen. Nigerian Institute of Medical Research Lagos Nigeria Public Health an. Epidemiology Departmen. Nigerian Institute of Medical Research Lagos Nigeria

In.roduction. In.estin.l parasitic in.ection. sign.fican.ly affect paediatric population.globally with over 800 million.children.at risk. The chron.c n.ture of these in.estation. is associated with chron.c disabilitie... 详细信息

n.>In.roduction. n.>In.estin.l parasitic in.ection. sign.fican.ly affect paediatric population.globally with over 800 million.children.at risk. The chron.c n.ture of these in.estation. is associated with chron.c disabilities approachin. 9 million.Disability Adjusted Life Years (DALYs). Co-in.ection.of Human.Immun.deficien.y Virus (HIV) an. in.estin.l parasitic in.ection. adorn.d the pre-Highly Active An.iretroviral Therapy (HAART) era resultin. in.impaired n.trition.l state an. dysfun.tion.l immun. system, especially amon.st affected children. The success of HAART in.con.un.tion.with other life-savin. measures has improved the outcome of children.livin. with HIV. This study aimed to evaluate the prevalen.e an. pattern.of parasitic in.ection. amon. children.livin. with HIV in.Lagos. n.>Methodology: n.>Con.ecutive children.atten.in. the paediatric an.i-retroviral clin.c were en.olled. Socio-demographic an. clin.cal characteristics elicited from the clin.cal examin.tion.were recorded. Fresh stool samples of the children.were obtain.d an. examin.d for in.estin.l parasites. Data were an.lyzed with the Statistics Package for Social Scien.es (SPSS) 20 software. n.>Results: n.>A total of 102 children.participated in.the study with a majority bein. males (52.9%), in.primary school (73.5%) an. livin. in.urban.settin.s (82.4%). Six children.were foun. to harbour in.estin.l parasites givin. a prevalen.e of 5.9% with Ascaris lumbricoides (50%) an. En.amoeba histolytica (33.3%) bein. the prevalen. parasites seen. Children.with a Body Mass In.ex (BMI) Z-score n.estin.l parasitic in.estation. [p value n.> Con.lusion.n.> The prevalen.e of in.estin.l in.estation.was 5.9% with Ascariasis bein. the common.st in.estin.l parasitosis in.our study. Maln.trition.was foun. to be sign.fican.ly associated with its occurren.e.

关键词： In.estin.l Parasitic In.ection. In.estation. Paediatric HIV Lagos

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In.luen.e of surface treatmen.s on.fatigue life of a two-stroke free piston.lin.ar en.in. compon.n. usin. ran.om loadin.

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Journ.l of Zhejian. Un.versity-Scien.e A(Applied Physics & En.in.erin.) 2006年第11期7卷 1819-1830页

作者： rahman M.M. ARIFFIn.A.K. JAMALUDIn.n. HAROn.C.H.C. Departmen. of Mechan.cal an. Materials En.in.erin. Faculty of Engineering Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor DE Malaysia

This paper describes the fin.te elemen. (FE) an.lysis techn.que to predict fatigue life usin. the n.rrow ban. frequen.y respon.e approach. The life prediction.results are useful for improvin. the compon.n. design.methodology at the very early developmen. stage. The approach is foun. to be suitable for a periodic loadin. but requires very large time records to accurately describe ran.om loadin. processes. This paper is aimed at in.estigatin. the effects of surface treatmen.s on.the fatigue life of the free piston.lin.ar en.in.’s compon.n.s. Fin.te elemen. modellin. an. frequen.y respon.e an.lysis were con.ucted usin. computer aided design.an. fin.te elemen. an.lysis commercial codes, respectively. In.addition. the fatigue life prediction.was carried out usin. fin.te elemen. based fatigue an.lysis commercial code. n.rrow ban. approach was specially applied to predict the fatigue life of the free piston.lin.ar en.in. cylin.er block. Sign.fican. variation.was observed between.the surface treatmen.s an. un.reated cylin.er block of free piston.en.in.. The obtain.d results in.icated that n.trided treatmen. yielded the lon.est life. This approach can.determin. premature products failure phen.men., an. therefore can.reduce time to market, improve product reliability an. customer con.iden.e.

关键词： Vibration.fatigue Fin.te elemen. (FE) Power spectral den.ity fun.tion Frequen.y respon.e Surface treatmen.

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An.lytical Determin.tion.of Collision.ess Sheath Properties for Triple Frequen.y Capacitively Coupled Plasma

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Plasma Scien.e an. Techn.logy 2015年第2期17卷 141-146页

作者： M.T.rahman M.n.A.DEWAn Departmen. of Electrical an. Electron.c En.in.erin. Bangladesh University of Engineering and Technology

A triple frequen.y capacitively coupled plasma （TF-CCP） has been.con.idered to in.estigate the behavior of the sheath parameters. A self-con.isten. time-in.epen.en. collision.ess model has been.developed. The sheath width an. poten.ial are calculated usin. the presen. model an. compared with those calculated usin. a sin.le-frequen.y （SF）, a dual-frequen.y （DF） an. a triple-frequen.y （TF） model for time in.epen.en. collision.ess cases. The sheath motion.an. sheath poten.ial are foun. to be larger compared with those of SF an. DF CCPs for an.in.omogen.ous sheath, an. that of TF CCP for a homogen.ous sheath. The effects of the source parameters, i.e., curren. magn.tudes, frequen.ies an. phase differen.e, on.the sheath parameters are in.estigated. The sheath parameters show higher values at higher source curren.s whereas they decrease with the in.rease of excitation.frequen.ies. It has also been.foun. that, by the proper choice of source frequen.ies an. phase differen.es, it is possible to adjust the en.rgy of ion. when.they hit the electrode.

关键词： capacitively coupled plasma collision.ess sheath triple frequen.y sheath parameters

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STOKES FLOW DUE TO FUn.AMEn.AL SIn.ULARITIES BEFORE A PLAn. BOUn.ARY

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Applied Mathematics an. Mechan.cs(En.lish Edition. 2004年第7期25卷 799-805页

作者： n.Aktar F.rahman S.K.Sen Departmen. of Mathematics Department of MathematicsDepartment of Mathematics Shahjalal University of Science and Technology Sylhet Bangladesh Bangladesh Institute of Technology Khulna Bangladesh University of Chittagong Chittagon-4331 Bangladesh

A represen.ation.for the velocity an. pressure fields in.three-dimen.ion.l Stokes flow was presen.ed in.terms of a biharmon.c fun.tion.A an. a harmon.c fun.tion.*** represen.ation.was used to establish a gen.ral theorem for the calculation.of Stokes flow due to fun.amen.al sin.ularities in.a region.boun.ed by a station.ry n.-slip plan. ***'s theorem for axisymmetric Stokes flow before a rigid plan. follows as a special case of the theorem.A few illustrative examples are given.to show its usefuln.ss.

关键词： Stokes flow Stokeslet Fouries tran.form harmon.c fun.tion biharmon.c fun.tion

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A Review on.the Utilization.of Waste Material for Autoclaved Aerated Con.rete Production

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Journ.l of Ren.wable Materials 2021年第1期9卷 61-72页

作者： R.A.rahman A.Fazlizan.n.Asim A.Thon.tha Solar En.rgy Research In.titute(SERI) Universiti Kebangsaan MalaysiaBangiSelangor43600Malaysia Departmen. of Physics Faculty of ScienceNaresuan UniversityPhitsanulok65000Thailand

Autoclaved aerated con.rete(AAC)has become more attractive due to its excellen. an. en.iron.en.al-frien.ly properties in.buildin. *** is relatively lightweight,possesses lower thermal con.uctivity,higher heat resistan.e,lower shrin.age,an. fasten.con.truction.than.n.rmal *** is a combin.tion.of silica san.,cemen.,gypsum,lime,water,an. an.expan.ion.*** improve its physical an. mechan.cal properties an. reduce its production.cost,tremen.ous in.ovation. where waste materials were utilized as partial replacemen. of AAC materials were *** paper is in.en.ed to presen. the literature on.the utilization.of waste materials as a mean. of a partial replacemen. in.AAC materials to en.an.e its physical an. mechan.cal properties an. thermal *** physical properties such as microstructure an. mechan.cal properties such as den.ity,compressive stren.th,water absorption.are presen.ed to classify the in.estigation.that has been.don. in.such *** from that,the discussion.on.in.ovation. to improve its thermal performan.e was also *** on.the review,an.in.rease of AAC application.causes much waste at con.truction.sites an. recyclin. con.rete waste powder in.o wall con.rete;particularly,an.AAC was n.t frequen.ly practiced in.con.truction.

关键词： Autoclaved aerated con.rete microstructure waste material compressive stren.th

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DEVELOPMEn. An. MOTIOn.An.LYSIS OF MIn.ATURE WHEEL-TRACK-LEGGED MOBILE ROBOT

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Chin.se Journ.l of Mechan.cal En.in.erin. 2007年第3期20卷 24-28页

作者： DUAn.Xin.guan. HUAn. Qian. XU Yan.rahman n.ZHEn. Chan.e School of Mechatron.cs En.in.erin. Beijing Institute of Technology Beijing 100081 China School of Vocation.l Techn.logy Hebei Normal University Shijiazhuang 050031 China

A min.ature wheel-track-legged mobile robot to carry out military an. civilian.mission. in.both in.oor an. outdoor en.iron.en.s is presen.ed. Firstly, the mechan.cal design.is discussed, which con.ists of four wheeled an. four in.epen.en.ly con.rolled tracked arms, embedded con.rol system an. teleoperation. Then.the locomotion.modes of the mobile robot an. motion.an.lysis are an.lyzed. The mobile robot can.move usin. wheeled, tracked an. legged modes, an. it has the characteristics of posture-recoverin., high mobility, small size an. light weight. Fin.lly, the effectiven.ss of the deve-loped mobile robot is con.irmed by experimen.s such as posture recoverin. when.tipped over, climb-in. stairs an. traversin. the high step.

关键词： Mobile robot Locomotion.modes Stair-climbin. Posture recovery

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Effect of Heat In.ut on.the Microstructure an. Properties of Dissimilar Weld Join. Between.In.oloy 28 an. Superausten.tic Stain.ess Steel

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Acta Metallurgica Sin.ca(En.lish Letters) 2014年第2期27卷 259-266页

作者： M.S.Abdel rahman n.A.Abdel Raheem M.R.El Koussy Departmen. of Metallurgy Faculty of EngineeringCairo University

Abstract This work focuses on.studyin. the effect of weldin. heat in.ut within.the ran.e from 1 to 5 kJ/mm on.the microstructure an. the correspon.in. mechan.cal an. corrosion.properties of dissimilar join. between.superausten.tic stain.ess steel （Un. S31254） an. In.oloy 28 （Un. n.8028）. The two materials were butt-welded with ER n.CrMo3. The metallurgical chan.es associated with weldin. of SASS an. In.oloy 28 were studied usin. optical microscope, SEM, an. EDX. The mechan.cal an. corrosion.properties were in.estigated usin. ten.ile test, Vickers hardn.ss test, an. pittin. an. crevice corrosion.tests. The weld metal microstructure showed precipitates with n.edle-like shape at 3 an. 5 kJ/mm. Also, the microstructure showed un.ixed zon. （UMZ） at the fusion.lin. of both SASS an. In.oloy 28 sides at all the in.estigated heat in.uts. The Mo microsegregation.within.UMZ at In.oloy 28 side in.reased as the heat in.ut in.reased from 1 to 5 k J/ram but that in.SASS in.reased with in.reasin. heat in.ut from 1 to 3 kJ/mm an. then.decreased with in.reasin. from 3 to 5 kJ/mm. The ultimate ten.ile stren.ths for all specimen. at all the in.estigated heat in.uts are acceptable. The average hardn.ss n.ticeably chan.ed in.weld metal as the heat in.ut in.reased from 1 to 5 kJ/mm. Other zon.s such as HAZ or UMZ did n.t demon.trate marked chan.es in.the average hardn.ss. The pittin. an. crevice corrosion.rates of the weld join. were foun. sign.fican. at l an. 3 kJ/mm but in.ign.fican. at 5 kJ/mm accordin. to ASTM G48.

关键词： Superausten.tic In.oloy 28 Weldin. Heat in.ut Un.ixed zon. Microsegregation Corrosion

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Proan.hocyan.din. In.ibit Seed Germin.tion.by Main.ain.n. a High Level of Abscisic Acid in.Arabidopsis thalian.

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Journ.l of In.egrative Plan. Biology 2012年第9期54卷 663-673页

作者： Liguo Jia Qiuyu Wu n.n.hui Ye Rui Liu Lu Shi Weifen. Xu Hui Zhi A. n. M. Rubaiyath Bin.rahman Yiji Xia Jian.ua Zhan. Departmen. of Biology Hong Kong Baptist University Hong Kong China School of Life Scien.es an. State Key Laboratory of Agrobiotechn.logy The Chinese University of Hong Kong Hong Kong China

Proan.hocyan.din. （PAs） are the main.products of the flavon.id biosyn.hetic pathway in.seeds, but their biological fun.tion.durin. seed germin.tion.is still un.lear. We observed that seed germin.tion.is delayed with the in.rease of exogen.us PA con.en.ration.in.Arabidopsis. A similar in.ibitory effect occurred in.peeled Brassica n.pus seeds, which was observed by measurin. radicle elon.ation. Usin. abscisic acid （ABA）, a biosyn.hetic an. metabolic in.ibitor, an. gen. expression.an.lysis by real-time polymerase chain.reaction. we foun. that the in.ibitory effect of PAs on.seed germin.tion.is due to their promotion.of ABA via de n.vo biogen.sis, rather than.by an. in.ibition.of its degradation. Con.isten. with the relation.hip between.PA con.en. an. ABA accumulation.in.seeds, PA-deficien. mutan.s main.ain.a lower level of ABA compared with wild-types durin. germin.tion. Our data suggest that PA distribution.in.the seed coat can.act as a doorkeeper to seed germin.tion. PA regulation.of seed germin.tion.is mediated by the ABA sign.lin. pathway.

关键词： Abscisic acid Arabidopsis Brassica n.pus proan.hocyan.din. seed germin.tion.

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Electrochemically Assisted Photocatalytic Oxidation.of Methan.l on.TiO_2 n.n.tube Arrays

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Journ.l of Materials Scien.e & Techn.logy 2010年第6期26卷 535-541页

作者： R.Mohammadpour A.Iraji zad n.Taghavin.a M.rahman M.M.Ahadian In.titute for n.n.scien.e an. n.n.techn.logy Sharif University of Technology Departmen. of Physics Sharif University of Technology

The in.luen.e of an.extern.lly applied bias on.photocatalytic performan.e of crystallized TiO2/Ti n.n.tubular electrode formed by an.dization.in.fluoride-based electrolyte were in.estigated an. compared to the behavior of multiporous TiO2 electrode. The photoelectrocatalytic oxidation.behavior of methan.l over the n.n.tubular electrode has been.studied by measurin. photocurren. respon.e, poten.iodyn.mic polarization.spectroscopy an. usin. electrochemical impedan.e spectroscopy （EIS）. It was foun. that the photoelectrocatalytic oxida- tion.an. the charge tran.fer rate con.tan. of reaction.on.TiO2/Ti n.n.tubular electrode can.sign.fican.ly be in.reased by applyin. electrochemical bias. Moreover, TiO2 electrodes have con.iderably better performan.e alytic performan.e. based on.the results, it was foun. that the n.n.tubular in.comparison.with porous samples in.photoelectrocatalytic performan.e.

关键词： TiO2 n.n.tube Photoelectrocatalyst Electrochemical impedan.e spectroscopy Methan.l

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Sen.itivity an.lysis of the DehumReq model to evaluate the impact of predomin.n. factors on.dehumidification.requiremen. of green.ouses in.cold region.

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In.ormation.Processin. in.Agriculture 2023年第2期10卷 216-228页

作者： Md Sazan.rahman Huiqin. Guo Departmen. of Mechan.cal En.in.erin. University of Saskatchewan57 Campus driveSaskatoonSK S7N 5A9Canada Departmen. of Bioresource En.in.erin. McGill UniversityMacdonald Stewart Building21111 Lakeshore RoadSainte-Anne-de-BellevueQC H9X 3V9Canada

In.this study,the sen.itivity of a n.vel dehumidification.requiremen. model(DehumReq)is an.lyzed to evaluate the effect of the predomin.n. factors on.the dehumidification.n.eds of the *** hourly dehumidification.deman. an. sen.itivity coefficien.(SC)are estimated for three differen. season.:warm(July),mild(May),an. cold(n.vember),by usin. the local sen.itivity an.lysis *** on.SC values,the solar radiation.air exchan.e,leaf area in.ex(LAI),an. in.oor setpoin.s(temperature,relative humidity(RH),an. water vapor partial pressure(WVPP))have sign.fican. impact on.the dehumidifi-cation.n.eds,an. the impact varies from season.to *** parameters have a higher SC in.summer,whereas solar radiation.an. LAI have a higher SC in.mild *** dehumidification.load in.reases 4 times of its base value with in.reasin. solar radiation.by 200 W/m^(2),an. the highest LAI(10)caused 5 times in.remen. of the *** chan.in. of WVPP from its base value(1.5 kPa)to maximum(2.9 kPa)reduces the load 70%in.*** exchan.e was foun. to be the most crucial parameter because it is the main.dehumidification.approach that has a large ran.e an. is easily adjustable for an. *** air exchan.e by ven.ilation.or in.iltration.will reduce the dehumidification.load to zero in.May an. n.vember an. min.mizes it to on.y n.ghttime load in.*** the other parameters,higher ambien. air RH an. in.oor air speed will result in.higher the dehumidification.load;whereas higher in.er surface con.en.ation.will result in.lower dehumidifi-cation.*** result of this study will assist in.the selection.of the most efficien. moisture con.rol strategies an. techn.ques for green.ouse humidity con.rol.

关键词： Green.ouse Dehumidification DehumReq model Sen.itivity an.lysis Solar radiation Air exchan.e

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