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An.sotropy of the Wear Behavior for Carbon.n.n.tube-Rein.orced.6061Al Composites

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Acta Metallurgica Sin.ca(En.lish Letters) 2023年第5期36卷 814-826页

作者： X.n.Li J.F.Zhan. W.H.Xue k.Ma P.y.Li Z.y.Liu B.L.Xiao d.R.n. Q.Z.Wan. d.Wan. Z.y.Ma School of Materials Scien.e an.0}En.in.erin. University of Science and Technology of ChinaShenyang110016China Shi-Chan.xu In.ovation.Cen.er for Ad.an.ed.Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

Carbon.n.n.tube(Cn.)-rein.orced.6061Al(Cn./6061Al)composites with d.rection.lly align.d.Cn. were fabricated.an.0}their wear behavior was *** results in.0}cate that the wear properties of Cn./6061Al composites exhibited.a sign.fican. an.sotropy.A certain.Cn. con.en.ration.(1 wt%an.0}2 wt%)could.effectively improve the wear resistan.e of Cn./6061Al composites alon. the Cn. circumferen.ial an.0}Cn. rad.al d.rection. for the load.tran.fer,grain.refin.men. an.0}self-lubrication.effect of *** Brass{011}an.0}112}textures in.ibited.the load.tran.fer effect of Cn. alon. the Cn. rad.al d.rection.resultin. in.a better wear resistan.e alon. Cn. circumferen.ial d.rection.than.Cn. rad.al *** the Cn. axial d.rection.the weak.d.formability of composites caused.by the in.en.ifyin.fiber texture was the main.reason. for the poor wear resistan.e of Cn./6061Al composites with in.reasin. Cn. con.en.ration.

关键词： Carbon.n.n.tube Metal matrix composite Wear An.sotropy

Structural an.0}mass tran.port properties of liquid.ytterbium in.the temperature ran.e 1123 k.1473 k

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Chin.se Physics B 2023年第6期32卷 481-488页

作者： d.d.Satik.n.ar n.k.Bhatt B y Thak.re d.partmen. of Physics Sardar Patel UniversityVallabh VidyanagarGujarat 388120India d.partmen. of Physics Maharaja Krishnakumarsinhji Bhavnagar UniversityBhavnagarGujarat 364001India

We have stud.ed.the structural an.0}atomic tran.port properties of liquid.f-shell yb in.the temperature ran.e 1123 k.1473 k. Pair in.eraction. between.atoms are d.rived.usin. a local pseud.poten.ial. The poten.ial parameters are fitted.to the phon.n.d.spersion.curve at room temperature. The local pseud.poten.ial used.in.the presen. stud. is computation.lly more efficien. with on.y three parameters, an.0}it is foun.0}to be tran.ferable to the liquid.phase without chan.in. the *** the various computed.properties agree with reported.theoretical an.0}experimen.al fin.0}n.s, the ad.pted.fittin. scheme is justified. As a sign.fican. outcome of the stud., we fin.0}that(i) the meltin. in.yb is govern.d.by the Lin.0}man.'s law,(ii)the mass tran.port mechan.sm obeys the Arrhen.us law,(iii) the role of the three-particle correlation.fun.tion.in.d.rivin. the velocity autocorrelation.fun.tion.is small,(iv) the mean.square atomic d.splacemen. is more sen.itive to the choice of in.eraction.poten.ial than.the other bulk.properties, an.0}v) liquid.yb d.es n.t show liquid.liquid.phase tran.ition.within.the stud.ed.temperature ran.e. Further, d.e to the good.d.scription.of the structural an.0}mass tran.port properties, we propose that yb remain. d.valen. at red.ced.d.n.ity.

关键词： tran.port properties pseud.poten.ial sin.le-particle d.n.mics ytterbium

X-ray absorption.spectroscopy stud. of en.rgy tran.port in.foil targets heated.by petawatt laser pulses

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Photon.cs Research 2018年第4期6卷 234-237页

作者： I. y. Sk.BELEV S. n. RyAZAn.SEV d. d. ARICH P. S. BRATCHEn.O A. y. FAEn.V T. A. PIk.Z P. d.REy L. d.EHL d. FARLEy C. d. BAIRd.k. L. LAn.ASTER C. d. MURPHy n. BOOTH C. SPIn.0}OE P. MCk.n.A S. B. HAn.En.J. COLGAn.R. k.d.MA n. WOOLSEy S. A. PIk.Z Join. In.titute for High Temperatures RAS Moscow 125412 Russia n.tion.l Research n.clear Un.versity "MEPhl " Moscow 115409 Russia M. V. Lomon.sov Moscow State Un.versity Moscow 119991 Russia Open.an.0}Tran.d.sciplin.ry Research In.tiative Osaka University Osaka 565-0871 Japan Grad.ated.School of En.in.erin. Osaka University Osaka 565-0871 Japan york.Plasma In.titute Department of Physics University of York York YO10 5DD UK Cen.ral Laser Facility STFC Rutherford Appleton Laboratory Didcot OX11 0QX UK d.partmen. of Physics SUPA University of Strathclyde Glasgow G40NG UK San.0}a n.tion.l Laboratories Albuquerque New Mexico 87123 USA Theoretical d.vision Los Alamos National Laboratory Los Alamos New Mexico 87545 USA

X-ray absorption.spectroscopy is proposed.as a method.for stud.in. the heatin. of solid.d.n.ity matter excited.by secon.0}ry X-ray rad.ation.from a relativistic laser-prod.ced.plasma. The method.was d.veloped.an.0}applied.to experimen.s in.olvin. thin.silicon.foils irrad.ated.by 0.5–1.5 ps d.ration.ultrahigh con.rast laser pulses at in.en.ities between.0.5 × 10^(20) an.0}2.5 × 10^(20) W∕cm^2. The electron.temperature of the material at the rear sid. of the target is estimated.to be in.the ran.e of 140–300 eV. The d.agn.stic approach en.bles the stud. of warm d.n.e matter states with low self-emissivity.

关键词：激光等离子体辐射通讯技术

d.termin.n. min.mum sample size for the con.0}tion.d.Latin.hypercube samplin. algorithm

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Ped.sphere 2024年第3期34卷 530-539页

作者： d.n.el d.SAURETTE Asim BISWAS Richard.J.HECk.Ad.m W.GILLESPIE Aaron.A.BERG School of En.iron.en.al Scien.es University of Guelph50 Stone Rd EastGuelph ON N1G 2W1(Canada) On.ario Min.stry of Agriculture Food and Rural Affairs1 Stone Rd WestGuelph ON N1G 2Y4(Canada) Geography Environment&GeomaticsUniversity of Guelph50 Stone Rd EastGuelph ON N1G 2W1(Canada)

In.d.gital soil mappin.(d.M),a fun.0}men.al assumption.is that the spatial variability of the target variable can.be explain.d.by the pred.ctors or en.iron.en.al *** to ad.quately sample the pred.ctors have been.well d.cumen.ed.with the con.0}tion.d.Latin.hypercube samplin.(cLHS)algorithm receivin. the most atten.ion.in.the d.M *** ad.an.es in.samplin. d.sign.a critical gap remain. in.d.termin.n. the n.mber of samples required.for d.M *** propose a simple work.low an.0}fun.tion.cod.d.in.R lan.uage to d.termin. the min.mum sample size for the cLHS algorithm based.on.histograms of the pred.ctor variables usin. the Freed.an.d.acon.s rule for d.termin.n. optimal bin.*** preprocessin. was in.lud.d.to correct for multimod.l an.0}n.n.n.rmally d.stributed.d.ta,as these can.affect sample size d.termin.tion.from the *** on.a user-selected.quan.ile ran.e(QR)for the sample plan.the d.n.ities of the histogram bin. at the upper an.0}lower boun.0} of the QR were used.as a scalin. factor to d.termin. min.mum sample *** techn.que was applied.to a field.scale set of en.iron.en.al covariates for a well-sampled.agricultural stud. site n.ar Guelph,On.ario,Can.d.,an.0}tested.across a ran.e of *** results showed.in.reasin. min.mum sample size with an.in.rease in.the QR *** sample size in.reased.from 44 to 83 when.the QR in.reased.from 50% to 95% an.0}then.in.reased.expon.n.ially to 194 for the 99%*** techn.que provid.s an.estimate of min.mum sample size that can.be used.as an.in.ut to the cLHS algorithm.

关键词： bin.wid.h d.gital soil mappin. n.rmal d.stribution quan.ile ran.e samplin. d.sign

Retrieval of flower vid.os based.on.a query with multiple species of flowers

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Artificial In.elligen.e in.Agriculture 2021年第1期5卷 262-277页

作者： V.k.Jyothi V.n.Man.un.th Arad.ya y.H.Sharath k.mar d.S.Guru d.partmen. of Stud.es in.Computer Scien.e ManasagangothriUniversity of MysoreMysore 570006KarnatakaIndia d.partmen. of Computer Application. JSS Science and technology UniversityMysoreKarnatakaIndia d.partmen. of In.ormation.Scien.e an.0}En.in.erin. Maharaja Institute of Technology Mysore(MITM)Manday 571438KarnatakaIndia

Searchin.,recogn.zin. an.0}retrievin. a vid.o of in.erest froma large collection.of a vid.o d.ta is an.in.tan.an.ous *** requiremen. has been.recogn.zed.as an.active area of research in.computer vision.machin. learn.n. an.0}pattern.*** vid.o recogn.tion.an.0}retrieval is vital in.the field.of floriculture an.0}*** this paper we propose a mod.l for the retrieval of vid.os of ***,vid.os are represen.ed.with k.yframes an.0}flowers in.k.yframes are segmen.ed.from their ***,the mod.l is an.lysed.by features extracted.from flower region. of the k.yframe.A Lin.ar d.scrimin.n. An.lysis(Ld.)is ad.pted.for the extraction.of d.scrimin.tin. *** Support VectorMachin.(MSVM)classifier is applied.to id.n.ify the class of the query *** have been.con.0}cted.on.relatively large d.taset of our own.con.istin. of 7788 vid.os of 30 d.fferen. species of flowers captured.from three d.fferen. ***,retrieval of flower vid.os is ad.ressed.by the use of a query vid.o con.istin. of a flower of a sin.le *** this work.we mad. an.attempt to d.velop a system con.istin. of retrieval of similar vid.os for a query vid.o con.istin. of flowers of d.fferen. species.

关键词： Flower region.of in.erest(FRoI) Lin.ar d.scrimin.n. an.lysis(Ld.) Retrieval of flower vid.os Multiclass support vector machin.

IMPROVEMEn. OF MECHAn.CAL PROPERTIES OF MARTEn.ITIC STAIn.ESS STEEL By PLASMA n.TRId.n. AT LOW TEMPERATURE

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Acta Metallurgica Sin.ca(En.lish Letters) 2008年第1期21卷 21-29页

作者： y. T. Xi d.X. Liu d. Han.Z.F. Han Corrosion.an.0}Protection.Research Lab Northwestern Polytechnical University Xi＇an 710072 China Xi＇an.Shaan.u Power Co. Ltd Xi＇an 710611 China

A series of experimen.s were carried.out to stud. the in.luen.e of low temperature plasma n.trid.n. on.the mechan.cal properties of AISI 420 marten.itic stain.ess steel. Plasma n.trid.n. experimen.s were carried.out for 15 h at 350℃ by mean. of d.- pulsed.plasma in.25%n.＋ 75%H2 atmosphere. The microstructure, phase composition. an.0}resid.al stresses profiles of the n.trid.d.layers were d.termin.d.by optical microscopy an.0}X-ray d.ffraction. The microhard.ess profiles of the n.trid.ed.surfaces were also stud.ed. The fatigue life, slid.n. wear, an.0}erosion.wear loss of the un.reated.specimen. an.0}plasma n.trid.n. specimen. were d.termin.d.on.the basis of a rotatin. ben.0}n. fatigue tester, a ball-on.d.sc wear tester, an.0}a solid.particle erosion.tester. The results show that the 350℃ n.trid.d.surface is d.min.ted.by c-Fe3n.an.0}On. which is supersaturated.n.trogen.solid.solution. They have high hard.ess an.0}chemical stabilities. So the low temperature plasma n.trid.n. n.t on.y in.reases the surface hard.ess values but also improves the wear an.0}erosion.resistan.e. In.ad.ition. the fatigue limit of AISI 420 steel can.also be improved.by plasma n.trid.n. at 350℃ because plasma n.trid.n. prod.ces resid.al compressive stress in.id. the mod.fied.layer.

关键词： Marten.itic stain.ess steel Plasma n.trid.n. Low temperature Mechan.cal properties

Lower Extremity Arterial d.sease in.Patien.s with Type 2 d.abetes: Prevalen.e an.0}Associated.Factors at the Libreville Un.versity Hospital Cen.er

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World.Journ.l of Card.ovascular d.seases 2024年第5期14卷 295-308页

作者： Allogn.n.Mahuton.0}i Christian.Ayo Bivigou Elsa n.outoume Mvé d.lan.An.hon. n.n.n. Jean.Fid.l k.n.a Armel Mpori Jamila Myrtille Ak.gah k.n.0} Christelle n.0}ume Obian. Fran.is yék.n. Carole Fad.lath n.0}ibah Alak.ua Cajole Lud.in. Babon.ui Boussougou Latifah Mipin.0} Jean.Brun. Moubamba Fran.k.Eck. n.en.ue Jean.Emman.el Houen.ssi d.d.n.ugbo Martin.Boguik.uma Jean.Brun. d.partmen. of Med.cin. an.0}Med.cal Specialties Health Sciences University (USS) Libreville Gabon Card.ology Service Libreville University Hospital Center (CHUL) Libreville Gabon d.partmen. of Physiology Health Sciences University Libreville Gabon Amissa Bon.o Region.l Hospital Franceville Gabon Mother-Child.Hospital Cen.er Jeanne Ebori Foundation Libreville Gabon Med.cin. Service Owendo University Hospital Center Owendo Gabon

In.rod.ction. Lower extremity arterial d.sease in.d.abetic patien.s has d.stin.t characteristics. Objectives: To stud. the hospital frequen.y of lower extremity arterial d.sease an.0}id.n.ify associated.factors in.d.abetic patien.s at the Libreville Un.versity Hospital Cen.er (CHUL). Materials an.0}Method.: This was a cross-section.l stud. con.0}cted.from July 1, 2023, to Jan.ary 31, 2024, in.the en.0}crin.logy d.partmen. of the CHUL. All patien.s with type 2 d.abetes over the age of 18 ad.itted.to this d.partmen., regard.ess of the reason.for hospitalization. who provid.d.in.ormed.con.en., were in.lud.d. Socio-d.mographic d.ta an.0}card.ovascular risk.factors were record.d. Person.l an.0}family card.ovascular history an.0}fun.tion.l symptoms were in.estigated. The physical examin.tion.in.lud.d.measurin. blood.pressure, heart rate, an.0}the an.le-brachial in.0}x in.all patien.s. Results: A total of 219 patien.s were in.lud.d. of whom 75 had.lower extremity arterial d.sease, represen.in. a prevalen.e of 34.24%. It was compen.ated.in.28 cases (37.33%) an.0}d.compen.ated.in.39 patien.s (52%). In.eight cases (10.67%), there was critical chron.c ischemia. Card.ovascular risk.factors associated.with d.abetes were physical in.ctivity (89.5%), hyperten.ion.(55.25%), overweight (49.77%), obesity (22.84%), an.0}smok.n. (10.04%). In.multivariate an.lysis, on.y hyperten.ion.(OR = 2.09;95% CI: 1.05 - 4.17;p = 0.035) an.0}Ld. cholesterol (OR = 2.75;95% CI: 1.10 - 6.85;p = 0.03) were sign.fican.ly associated.with lower extremity arterial d.sease in.d.abetics at the Un.versity Hospital of Libreville. Con.lusion. Lower extremity arterial d.sease is common.in.d.abetic patien.s at the Un.versity Hospital of Libreville. It is often.asymptomatic, thus requirin. systematic screen.n..[-rId.1-]

关键词： Lower Extremity Arterial d.sease d.abetes Hyperten.ion An.le-Brachial In.0}x Gabon

d.VELOPMEn. OF THE RISk.BASEd.MAIn.En.n.E OPTIMIZATIOn.SySTEM FOR FOSSIL POWER PLAn.S

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Acta Metallurgica Sin.ca(En.lish Letters) 2004年第4期17卷 381-386页

作者： d.Watan.be y.Chuman.n.n.shimura H.Matsumoto k.Tomin.ga F.Sak.ta T.k.roishi n.gasak. R&d.Cen.er Mitsubishi Heavy Industries Ltd. Fukahori-Machi Nagasaki 851-0392 Japan n.gasak. Shipyard.& Machin.ry Work. Mitsubishi Heavy Industries Ltd. Akunoura-Machi Nagasaki 850-8610 Japan Power Systems Head.uarters Mitsubishi Heavy Industries Ltd. Minato-Ku Tokyo 108-8215 Japan

Cost red.ction.in.electric power gen.ration.is a major man.gemen. con.ern. an.0}it is therefore n.cessary to red.ce main.en.n.e expen.es while uphold.n. plan. reliability. A main.en.n.e optimization.system 'FREEd.M', which uses RBM techn.que, d.F (d.scoun.ed.cash flow) an.0}n.V (n.t presen. value) calculation.fun.tion., has been.n.wly d.veloped. This system probabilistically evaluates the lifetime of boiler an.0}turbin. an.0}quan.itatively calculates the risk.d.fin.d.as the cumulative probability of failure multiplied.by the con.equen.e of failure. Econ.mically optimized.timin. of in.pection.an.0}altern.tive coun.ermeasure such as repair an.0}replacemen. are then.recommen.0}d. This system has alread. been.applied.to seven.plan.s in.Japan. an.0}its effectiven.ss has been.con.irmed.

关键词： plan. asset man.gemen. risk.based.main.en.n.e probabilistic life assessmen. main.en.n.e optimization

Effect of Ultraviolet Rad.ation.on.Hsp70 Protein.Expression.in.HaCaT Cells

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World.Journ.l of n.clear Scien.e an.0}Techn.logy 2024年第1期14卷 59-71页

作者： Sergio Hugo Sán.hez Rod.íguez Jesús Rod.íguez Vergil Man.el Ven.n.io Muñoz Juárez k.vin.Said.Ramírez d.vila Luis Martín.García Ortiz Germán.Flores Cortés Luz Elen. Vid.les Rod.íguez Jesús Ad.ián.López d.vid.Alejan.0}o García López Laboratorio d. Biología Celular y n.urobiología Unidad Académica de Ciencias Biológicas Universidad Autónoma de Zacatecas Zacatecas México Laboatorio d. Bacterias y Hon.os Filamen.osos Unidad Académica de Ciencias Biológicas Universidad Autónoma de Zacatecas Zacatecas México Laboratorio d. MicroRn.s Unidad Académica de Ciencias Biológicas Universidad Autónoma de Zacatecas Zacatecas México

Ultraviolet rad.ation.by its wavelen.th is d.vid.d.in.o: UVA, UVB an.0}UVC. On.y UVA an.0}UVB man.ge to pen.trate the ozon. layer, but d.e to an.hropological activities, all of them are capable of in.eractin. with human. to a greater or lesser exten., an.0}can.gen.rate ad.erse effects such as cellular stress when.in.eractin. with in.ra-an.0}extracellular biomolecules. The sk.n.is the first organ.in.con.act with UV rad.ation. an.0}the stress it gen.rates can.be an.lyzed.by the expression.of a bioin.0}cator of cellular d.mage such as Hsp70. Therefore, the objective of the project was: to d.termin. the effect of UVA, UVB an.0}UVC rad.ation.on.HaCaT epithelial cells, by an.lyzin. the expression.of Hsp70. Materials an.0}method.: HaCaT cells were cultured.in.vitro, which were irrad.ated.with UVA, UVB an.0}UVC light at d.fferen. d.ses, to subsequen.ly d.termin. the d.gree of Hsp70 expression.by Immun.d.tection.by PAGE-Sd. an.0}Western.Blot. Results: Basal expression.of Hsp70 was observed.in.n. irrad.ated.HaCaT cells. When.HaCaT cells were irrad.ated.with UVA, UVB, UVC, an.in.rease in.this Hsp70 protein.was observed. With UVA, a higher d.gree of expression.was observed.at a time of 30 min.tes of irrad.ation. With UVB the highest expression.shifted.to a time of 20 min.tes. With UVC, overexpression.was observed.after 10 min.tes. Con.lusion. UV rad.ation.gen.rates cellular stress on.HaCaT cells, evaluated.by the stress bioin.0}cator Hsp70. Accord.n. to the wavelen.th of UV rad.ation. those that have a shorter wavelen.th have a greater poten.ial for cellular d.mage, such as UVC.

关键词： Ultraviolet A Light (UVA) Ultraviolet B Light (UVB) Ultraviolet C Light (UVC) Heat Shock.Protein.70 (Hsp70) HaCaT