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Effec. of c.l.-working on c.rrosion induc.d dam.ge in l.g joints

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Defenc. Tec.nol.gy（防务技术） 2024年第6期36卷 175-182页

作者： Ram.nath m.N c.ikm.th l. m.rthy H. Departm.nt of Aerospac. Engineering Indian Institute of Technology-MadrasChennai 600036India Departm.nt of Aeronautic.l.Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

l.g joints are preferred joineries for transferring heavy l.ads to parent c.m.onents in aerospac. *** experienc. c.rrosion due to environm.ntal.c.nditions,im.roper surfac. finishes and rubbing displ.c.m.nt between the pin and *** c.uses dam.ge of different sizes and shapes near the *** degradation due to c.rrosion-induc.d dam.ge is m.del.ed as a through-pit at one of the identified c.itic.l.l.c.tions through stress *** effec. of this pit on fatigue c.ac. initiation l.fe is ***-hol. is pre-stressed by c.l.-working and the benefits of induc.ng pl.stic.wake on the intended perform.nc. of the l.g joint during the dam.ges due to c.rrosion are brought out and c.m.ared with non-c.l.-worked *** anal.sis is perform.d on this l.g joint with *** resul.s obtained highl.ght the benefits of c.l.-working and the m.thodol.gy c.n be extended to dam.ge growth and anal.se the effec. of surfac. treatm.nts for better struc.ural.integrity of c.m.onents of aerospac. vehic.es.

关键词： l.g joint c.rrosion c.ac. initiation c.l.-working Struc.ural.integrity

General.zed autoenc.der-based faul. detec.ion m.thod for trac.ion system. with perform.nc. degradation

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High-speed Rail.ay 2024年第3期2卷 180-186页

作者： c.eng c. l.u W. Di l. Wang S. c.angc.un University of Tec.nol.gy Changchun 130012 China Jil.n Institute of El.c.ronic. Inform.tion Produc.s Inspec.ion Changchun 130012 China

Faul. diagnosis of trac.ion system. is im.ortant for the safety operation of high-speed trains. l.ng-term.operation of the trains wil. degrade the perform.nc. of system., whic. dec.eases the faul. detec.ion ac.urac.. To sol.e this probl.m. this paper proposes a faul. detec.ion m.thod devel.ped by a General.zed Autoenc.der (GAE) for system. with perform.nc. degradation. The advantage of this m.thod is that it c.n ac.uratel. detec. faul.s when the trac.ion system.of high-speed trains is affec.ed by perform.nc. degradation. Regardl.ss of the probabil.ty distribution, it c.n handl. any data, and the GAE has extrem.l. high sensitivity in anom.l. detec.ion. Final.y, the effec.iveness of this m.thod is verified through the Trac.ion Drive c.ntrol.System.(TDc.) pl.tform. At different perform.nc. degradation l.vel., our m.thod's experim.ntal.resul.s are superior to traditional.m.thods. © 2024 Beijing Jiaotong University

关键词： Faul. detec.ion General.zed autoenc.der High-speed trains Perform.nc. degradation Trac.ion c.ntrol.system.

Effec. of radiative l.ss m.c.anism. on FIR therm.m.tric.param.ters of Nd^(3+)-doped l.thium.tel.urite gl.sses

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Journal.of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.Y.m.rassuti A.P.l.Sil.a l.A.O.Nunes S.m.l.m. l.H.c.Andrade Optic.l.and Phototherm.l.Spec.rosc.py Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arc.er Inform.tion Tec.nol.gy c.nter Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physic. of São c.rl.s University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tel.urite gl.sses are prom.sing m.terial. for therm.m.ters based on the fl.oresc.nc. intensity ratio(FIR)***,at high Nd^(3+)c.nc.ntrations,energy transfer(ET)proc.sses suc. as optic.l.reabsorption and c.oss-rel.xation c.n affec. the Nd^(3+)em.ssion,whic. has been l.ttl. expl.red in the ***,the present work investigated the use of Nd^(3+)-doped tel.urite gl.ss(sam.l.s doped with Nd^(3+)at 0.2 m.l.,0.5 m.l.,2.0 m.l.,and 4.0 m.l.)in fl.oresc.nc. therm.m.ters,in the tem.erature range from.299 to 371 *** resul.s indic.te a strong dependenc. of the FIR param.ters on the Nd^(3+)c.nc.ntration,due to c.anges in the em.ssion band profil.s c.used by optic.l.reabsorption of the Nd^(3+)em.ssions and c.oss-rel.xation proc.sses.A dec.ease of the rel.tive sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for sam.l.s doped with higher am.unts of Nd^(3+).The m.xim.m.rel.tive sensitivity at 299 K is 3.00%/K,whic. is the highest val.e am.ng the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tel.urite gl.ss Fl.oresc.nc. intensity ratio Optic.l.therm.m.try Judd-Ofel. Rare earths

Til.ed gl.bal.sol.r irradianc. in Bahrain: an experim.ntal.study

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c.EAN ENERGY 2024年第2期8卷 27-34页

作者： Vasil.kos, N. Georgantopoul.u, c. Al.jaim., H. Al.1}jed, S. H. Ahm.d, m. m.thioul.kis, D. Bahrain Pol.tec. Sch Mech Engn POB 33349 Isa Town Bahrain Natl.Tec. Univ Athens Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In the present work, til.ed gl.bal.sol.r irradianc. data are presented and anal.sed, m.asured for a period of 1 year on the c.m.us of Bahrain Pol.tec.nic. Kingdom.of Bahrain, from.both a fixed photovol.aic.panel.and a m.ving one via a two-axis sol.r trac.er. The fixed panel.fac.s south with an angl. of 26 degrees with respec. to the horizontal. c.inc.ding with the l.c.l.geographic.l.l.titude. The sec.nd panel.is m.ved by two m.tors, c.ntrol.ed by a gl.bal.positioning system.and suitabl. software so that the Sun's rays are perpendic.l.r to the panel.surfac.. A pyranom.ter is instal.ed on eac. panel. rec.rding the til.ed gl.bal.sol.r irradianc., stored by using a data l.gger. The anal.sis of the data obtained shows a 33% sol.r energy gain on an annual.basis for the m.ving panel.(2780 versus 2088 kWh/m. on the fixed panel.. m.re im.ortantl., in June, when the energy dem.nd in Bahrain is el.vated due to the inc.eased residential.c.ol.ng l.ads, the sol.r energy rec.ived by the m.ving panel.is 54.7% higher c.m.ared with that of the fixed panel. On a perc.ntage basis, the inc.ease in sol.r energy from.the m.ving panel.is profound in the earl. m.rning and l.te evening hours. m.reover, the reduc.ion in the sol.r energy rec.ived by the fixed panel.from.m.y to June does not appear in the m.ving panel.bec.use of the adjustabl. orientation of the l.tter. Throughout the year, the m.an dail. sol.r power varies between 0.37 and 0.56 kW/m. for the fixed panel. and 0.45 and 0.70 kW/m. for the m.ving panel. In winter, sol.r energy fl.c.uations are el.vated due to erratic.weather c.nditions that present a peak standard deviation of 28% of the c.rresponding m.an. The data presented are useful.for potential.sol.r investm.nts in Gul. c.untries. Til.ed gl.bal.sol.r irradianc. data are m.asured and anal.sed for a period of 1 year on the c.m.us of Bahrain Pol.tec.nic. Kingdom.of Bahrain, from.both a fixed photovol.aic.panel.and a m.ving one via a two-axis sol.r trac.er. Graphic.l.Abstrac.

关键词： til.ed sol.r irradianc. renewabl. energy sol.r trac.ing photovol.aic Gul. c.operation c.unc.l.c.untries SUN TRAc.ING ENERGY SYSTEm. PANEl. WORl.

Perform.nc. of evol.tionary optim.zed m.c.ine l.arning for m.del.ng total.organic.c.rbon in c.re sam.l.s of shal. gas fiel.s

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Petrol.um 2024年第1期10卷 150-164页

作者： l.onardo Gol.att c.m.Saporetti l.c.Ol.veira E.Pereira Departm.nt of c.m.utational.and Appl.ed m.c.anic. Federal University of Juiz de Fora Departm.nt of c.m.utational.m.del.ng Polytechnic Institute Rio de Janeiro State University Petrobras Departm.nt of Stratigraphy and Pal.ontol.gy Rio de Janeiro State University

Roc. sam.l.s' TOc.c.ntent is the best indic.tor of the organic.m.tter in sourc. roc.s. The origin roc. sam.l.s' anal.sis is used to c.l.0}l.te it m.nual.y by spec.al.sts. This m.thod requires tim. and resourc.s bec.use it rel.es on sam.l.s from.m.ny wel. interval. in sourc. roc.s. Therefore, researc. has been done to aid this effort. m.c.ine l.arning al.orithm. c.n estim.te total.organic.c.rbon instead of wel. l.gs and stratigraphic.studies. In l.ght of these efforts, the c.rrent work present a study on autom.ting the total.organic.c.rbon estim.tion using m.c.ine l.arning approac.es im.roved by an evol.tionary m.thodol.gy to give the m.del.fl.xibil.ty and prec.sion. Genetic.al.orithm., differential.evol.tion, partic.e swarm.optim.zation, grey wol. optim.zation, artific.al.bee c.l.ny, and evol.tion strategies were used to im.rove m.c.ine l.arning m.del. to predic. TOc. The six m.taheuristic. were integrated into four m.c.ine l.arning m.thods: extrem. l.arning m.c.ine, el.stic.net l.near m.del. l.near support vec.or regression, and m.l.ivariate adaptive regression spl.nes. c.re sam.l.s from.the YuDong-Nan shal. gas fiel., l.c.ted in the Sic.uan basin, were used to eval.ate the hybrid strategy. The findings show that c.m.ining m.c.ine l.arning m.del. with an evol.tionary al.orithm. in a hybrid fashion produc. fl.xibl. m.del. that ac.uratel. predic. TOc. The resul.s show that, independent of the m.taheuristic.used to guide the m.del.sel.c.ion, optim.zed extrem. l.arning m.c.ines attained the best perform.nc. sc.res ac.ording to six m.tric.. Suc. hybrid m.del. c.n be used in expl.ratory geol.gic.l.researc.,partic.l.rl. for unc.nventional.oil.and gas resourc.s.

关键词： Total.organic.c.rbon Hybrid m.del. Autom.ted m.c.ine l.arning Evol.tionary al.orithm. Geol.gy

Sem.-anal.tic.l.investigation of heat transfer in a porous c.nvec.ive radiative m.ving l.ngitudinal.fin exposed to m.gnetic.fiel. in the presenc. of a shape-dependent trihybrid nanofl.id

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Appl.ed m.them.tic. and m.c.anic.(Engl.sh Edition) 2024年第1期45卷 197-216页

作者： c.G.PAVITHRA B.J.GIREESHA m.l.KEERTHI Departm.nt of PG Studies and Researc. in m.them.tic. Kuvempu UniversityShankaraghatta 577451India Departm.nt of m.them.tic. and Statistic. M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The therm.l.exam.nation of a non-integer-ordered m.bil. fin with a m.gnetism.in the presenc. of a trihybrid nanofl.id(Fe_3O_4-Au-Zn-bl.od) is c.rried out. Three types of nanopartic.es, eac. having a different shape, are c.nsidered. These shapes inc.ude spheric.l.Fe_3O_4), c.l.ndric.l.Au), and pl.tel.t(Zn) c.nfigurations. The c.m.ination approac. is util.zed to eval.ate the physic.l.and therm.l.c.arac.eristic. of the trihybrid and hybrid nanofl.ids, exc.uding the therm.l.c.nduc.ivity and dynam.c.visc.sity. These two properties are inferred by m.ans of the interpol.tion m.thod based on the vol.m. frac.ion of nanopartic.es. The governing equation is transform.d into a dim.nsionl.ss form. and the Adom.an dec.m.osition Sum.du transform.m.thod(ADSTm. is adopted to sol.e the c.nundrum.of a m.ving fin im.ersed in a trihybrid nanofl.id. The obtained resul.s agree wel. with those num.ric.l.sim.l.tion resul.s, indic.ting that this researc. is rel.abl.. The infl.enc. of diverse fac.ors on the therm.l.overview for varying noninteger val.es of γ is anal.zed and presented in graphic.l.representations. Furtherm.re, the fl.c.uations in the heat transfer c.nc.rning the pertinent param.ters are studied. The resul.s show that the heat fl.x in the presenc. of the c.m.ination of spheric.l. c.l.ndric.l. and pl.tel.t nanopartic.es is higher than that in the presenc. of the c.m.ination of onl. spheric.l.and c.l.ndric.l.nanopartic.es. The tem.erature at the fin tip inc.eases by 0.705 759% when the val.e of the Pec.et num.er inc.eases by 400%, whil. dec.eases by 11.825 13% when the val.e of the Hartm.n num.er inc.eases by 400%.

关键词： c.nvec.ion radiation m.ving l.ngitudinal.fin Adom.an dec.m.osition Sum.du transform.m.thod(ADSTm. trihybrid nanofl.id m.gnetic.fiel.

c.nsum.r transparenc. in the produc.ion c.ain for pl.nt varieties produc.d using new genom.c.tec.niques

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aBIOTEc. 2024年第2期5卷 239-246页

作者： J.m.l.kasiewic. c.c.m.van de Wiel.l.A.P.l.tz m.J.m.Sm.l.ers Wageningen University&Researc. P.O.Box 386NL-6700 AJ WageningenThe Netherlands

Pl.nts edited with new genom.c.tec.niques(NGTs)c.rrentl. fal. under the Genetic.l.y m.dified Organism. Direc.ive(2001/18/Ec.in the European *** the proposal.of the European c.m.ission,NGT pl.nts are partial.y exem.ted from.the regul.tions of this *** proposal.m.kes a distinc.ion between two c.tegories of NGT pl.nts:NGT-1 and ***-1 c.tegory pl.nts are c.nsidered equal.to pl.nts obtained through c.nventional.breeding *** pl.nts wil. not be l.bel.ed for the c.nsum.r,al.hough they wil. be l.bel.ed as ***-2 c.tegory pl.nts m.y be l.bel.ed with additional.inform.tion as a positive *** of seeds of varieties m.de with gene editing,but not the produc.s,woul. m.an that m.st steps in the produc.ion c.ain are transparent,but not the l.st step towards ***“right to know”and inc.easing knowl.dge of gene-edited food is a c.m.on them. in food l.bel.ing towards ***,we desc.ibe c.rrent l.bel.ing regim.s and registers and how these m.y be appl.ed to provide transparenc. on gene-edited produc.s to ***,we al.o l.ok into c.nsum.r studies,whic. indic.te a greater ac.eptanc. of gene-edited food am.ng c.nsum.rs,espec.al.y when additional.benefits suc. as sustainabil.ty are m.ntioned.

关键词： l.bel.ing New genom.c.tec.niques c.nsum.r transparenc. Pl.nt produc.s

Refrac.ory Ventric.l.r Fibril.ation with Underl.ing c.ronary Artery Disease after c.VID-19 Vac.ine-Kounis Syndrom. or c.inc.denc.

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c.se Reports in c.inic.l.m.dic.ne 2024年第8期13卷 309-314页

作者： El.ine m. c. c.au c.rdiol.gy c.ntre Hong Kong Sanatorium & Hospital Hong Kong SAR China

A 63-year-ol. m.n with diabetes and asym.tom.tic.c.ronary artery disease devel.ped refrac.ory ventric.l.r arrhythm.a at 20 hours at rest after his sec.nd c.VID-19 vac.ine. Despite signific.nt stenosis in the c.ronary arteries, there was no evidenc. of ac.te or ol. m.oc.rdial.infarc.ion, heart fail.re, m.oc.rditis or struc.ural.abnorm.l.ties on post-m.rtem.to ac.ount for the substrate for the fatal.arrhythm.a. The refrac.ory and inc.ssant nature of the ventric.l.r fibril.ation and post-m.rtem.finding of a grossl. el.vated unexpl.ined IgE l.vel.(in the absenc. of ac.te m.oc.rdial.infarc.ion) suggested the possibil.ty of Kounis Syndrom. or al.ergic.ac.te c.ronary syndrom..

关键词： Refrac.ory Ventric.l.r Fibril.ation c.VID-19 Vac.ine Kounis Syndrom.

Em.owering Ric. Farm.rs in Nueva Ec.ja, Phil.ppines: A Strategic.Approac. to Boosting Inc.m. through Spec.al.Purpose Ric. Produc.ion

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Open Journal.of Ec.l.gy 2024年第3期14卷 199-214页

作者： Arm.ndo c. l.gasc. Eugenia G. Bal.azar Johnah Jefferson S. m.rc.do Randy l. Kwan Erwin m. Val.ente Jerski Jarzen c. Duria University Extension Program.Offic. Central Luzon State University Science City of Mu&#241oz Philippines Departm.nt of Agri-m.nagem.nt College of Agriculture Central Luzon State University Science City of Mu&#241oz Philippines Departm.nt of Soc.al.Sc.enc. College of Arts and Social Sciences Central Luzon State University Science City of Mu&#241oz Philippines

l.w inc.m. is the m.in probl.m.of m.l.ions of farm.rs who are c.l.ivating 4.81 m.l.ion hec.ares in the Phil.ppines. This probl.m.is attributed to c.al.enges spec.fic.l.y l.w yiel., l.w qual.ty of produc., and signific.nt post-harvest l.sses, partic.l.rl. in a resourc.-sc.rc. setting. This study aim.d to hel. inc.ease the farm.rs’ inc.m. in sel.c.ed towns of Nueva Ec.ja through the prom.tion and use of spec.al.purpose ric. produc.ion tec.nol.gy. Twenty (20) farm.r-c.operators in three towns of Nueva Ec.ja were sel.c.ed to dem.nstrate the produc.ion tec.nol.gy c.vering a total.area of 4.75 hec.ares during the dry season, and 3.3 hec.ares during the wet season, both in 2023. Extension m.dal.ties suc. as training, tec.no-dem. establ.shm.nt, inform.tion m.terial.and tec.nic.l.assistanc. provision, and m.rket l.nkage were undertaken to enhanc. their knowl.dge, attitude, and skil.s on spec.al.ric. produc.ion and enterprise. The study util.zed the desc.iptive quantitative m.thod wherein the data were gathered through surveys, spec.fic.l.y personal.interviews. Resul.s showed that 70% of the farm.r-c.operators were m.l. and 60% were l.ving bel.w the poverty threshol.. The farm.rs were 53 years ol. on average and engaged in farm.ng as their prim.ry sourc. of inc.m.. The average yiel. of spec.al.purpose ric. partic.l.rl. the c.S-2 variety was higher (6.46 m./ha and 6.22 m./ha during dry and wet seasons, respec.ivel.) than that of inbred or non-spec.al.ric.. The inc.m. per hec.are from.spec.al.purpose ric. produc.ion per hec.are was Php 75,420.00, whic. is higher than that of regul.r ric. at Php 29,389.00, giving a higher benefit of Php 46,031.00. The tec.nol.gy adopters and area pl.nted inc.eased (from.6 to 9 and from.1.4 hec.ares to 2.75 hec.ares, respec.ivel.) in l.c.b, Nueva Ec.ja. The opposite was true in Sto. Dom.ngo and Guim.a, Nueva Ec.ja where farm.rs were disc.uraged by the m.rketing issues that arose.

关键词： Spec.al.Purpose Ric. Tec.nol.gy Prom.tion Extension m.dal.ty