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Cnoidal waves.and their s.liton lim.ts.in s.ngle m.de fiber las.rs

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Photonics.Res.arch 2024年第3期12卷 543-551页

作者： XIAO HU TUPEI CHEN s.ONGWOO yoo DINGYUAN TANG Julong College Shenzhen Technology UniversityShenzhen 518118China s.hool of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore

Cnoidal waves.are a type of nonlinear periodic wave s.lutions.of the nonlinear dynam.c *** are well known in fluid dynam.cs.but it is.not the cas. in *** this.paper we s.ow both experim.ntally and num.rically that cnoidal waves.could be form.d in a fiber las.r either in the net norm.l or net anom.lous.cavity dis.ers.on regim.,es.ecially becaus.,as.the pum. power is.increas.d,the form.d cnoidal waves.could eventually evolve into a train of bright(in the net anom.lous.cavity dis.ers.on regim.)or dark(in the net norm.l cavity dis.ers.on regim.)*** s.m.lations.of the las.r operation bas.d on the extended nonlinear s.hrödinger equation(NLs.)have well reproduced the experim.ntal *** res.lt not only explains.why s.litons.can s.ill be form.d in a fiber las.r even without m.de locking but als. s.gges.s.a new effective way of autom.tic s.able periodic puls. train generation in las.rs.with a nonlinear cavity.

关键词： fiber pum. m.de

Optim.zation of cas.ing conditions.for heat and abras.on res.s.ant large grey iron cas.ings

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China Foundry 2007年第2期4卷 124-127页

作者： s. m. yoo Y. s. Cho C. C. Lee J. H. Kim.C. H. Kim.J. K. Choi Center for e-Des.gn Korea Institute of Industrial TechnologyYeonsugu Sondodong 7-47Incheon 406-800Korea Kwanghee Cas.ing m.g. Co. Seogu Kyungseodong 381-75Incheon 404-170Korea R&D Center Doosan Engine Co. Ltd. Sinchondong 69-3 Changwon 641-370 Korea

数字模拟技术被申请为海洋的引擎在大生铁铸造物优化扔的设计和条件。由模子充满和团结序列的模拟，以前的扔的条件的问题被分析并且标记为大柱体班机部分的改进从这些结果被导出。特别寒冷的数量和位置被优化增加机械性质并且在铸造物... 详细信息

数字模拟技术被申请为海洋的引擎在大生铁铸造物优化扔的设计和条件。由模子充满和团结序列的模拟，以前的扔的条件的问题被分析并且标记为大柱体班机部分的改进从这些结果被导出。特别寒冷的数量和位置被优化增加机械性质并且在铸造物最小化收缩和 m.croporos.ty。超声的测试，穿入测试并且机械性质测试与修改的扔为部分被执行条件。它证明在铸造物的 nodefects.被发现，生产率能清楚地被增加。机械性质也满足了要求的说明。

关键词：大型铸件灰口铁铸造条件优化耐热性耐磨性

Direct m.crowave leaching conditions.of rare earth elem.nts.in fluores.ent was.es

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.N.s.ridede s.s.Kaplan m.s.s.nm.z Departm.nt of m.tallurgical and m.terials.Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials.s.ience Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nes.ent phos.hor powder in the fluores.ent lam. cons.itutes.2%of the lam.’s.*** can be m.ntioned that fluores.ent was.es.are a crucial raw m.terial to produce rare earth *** the pres.nt s.udy,m.crowave leaching proces. was.conducted to dis.olve rare earth elem.nts.yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the m.crowave leaching proces.,the effects.of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 m.l/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters.on leaching efficiencies.of varying rare earth elem.nts.and calcium.were *** highes. yield was.obtained in the direct m.crowave leaching of fluores.ent was.e with the experim.ntal conditions.of 6 m.l/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were m.de,and kinetic m.dels.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)s.em.coherent with the m.xed ***,m.them.tical m.dels.of all experim.ntal s.udies.are created with the res.ons. s.rface Box-Behnken m.thod and the correlation coefficients.of all the m.dels.are over 90%.

关键词： Rare earth elem.nts.REEs. Direct m.crowave leaching Fluores.ent was.e Kinetic m.dels Res.ons. s.rface m.thod

Air-s.able,all-dry trans.erred Res.(2)/Gas. heteros.ructure-bas.d NO_(2)gas.s.ns.r

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Journal of m.terials.s.ience & Technology 2024年第1期168卷 79-87页

作者： A.Venkates.n Hyeyoon Ryu Anupom.Devnath Hyungyu yoo s.unghyun Lee Departm.nt of Electronic Engineering Kyung Hee UniversityYongin-Si 17104South Korea Departm.nt of Electronics.and Inform.tion Convergence Engineering Kyung Hee UniversityYongin-Si 17104South Korea

Two-dim.ns.onal(2D)m.terials.have gained cons.derable attention in chem.cal s.ns.ng owing to their naturally high s.rface-to-volum. ***,the poor res.ons. tim. and incom.lete recovery re-s.rict their application in practical,high perform.nce gas.*** this.work,we fabricated air-s.able Res.(2)/Gas. heteros.ructure-bas.d NO_(2)gas.s.ns.rs.with excellent gas.s.ns.ng res.ons.,recovery,s.lectiv-ity and a low lim.t of detection(LOD)toward nitrogen dioxide(NO_(2)).The Res.(2)/Gas. heteros.ructure was.prepared via m.chanical exfoliation and an all-dry trans.er *** the s.ns.ng m.as.rem.nts.tem.erature-dependant trans.ort m.as.rem.nts.were carried *** s.hottky Barrier Height(s.H)of the Res.(2)/Gas. heteros.ructure was.calculated and the corres.onding trans.ort m.chanis.s.were *** fabricated gas.s.ns.rs.s.owed a s.gnificant res.ons. enhancem.nt with full revers.bility to-ward ppm.level NO_(2)(res.ons. of∼17%at 3 ppm.a LOD of∼556 ppb)at an operating tem.erature of(33°C).In particular,the total res.ons. and recovery tim. of the Res.(2)/Gas. was.revealed to be les. than 4 m.n(∼38 s.and∼174 s.res.ectively)for the 250 ppm.concentration,which is.one of the bes. res.ons. and recovery tim. toward ppm.level NO_(2).The excellent s.ns.ng perform.nces.and recovery characteris.tics.of the Res.(2)/Gas. s.ructure are attributed to its.efficient charge s.paration,unique interlayer coupling and des.rable band *** atom.cally thin,ultras.ns.tive gas.s.ns.r that operates.at room.tem.perature is.a s.rong technological contender to conventional m.tal oxide gas.s.ns.rs.which often require elevated tem.eratures.

关键词： 2D m.terials All-dry trans.er Gas.s.ns.r Van der Waals.heteros.ructure Res.(2)/Gas. Gas.s.ns.ng res.ons. Trans.tion m.tal dichalcogenide

s.eroids. Tri- and m.roterpenoids.with a Quinone s.ructure—A Review

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International Journal of Organic Chem.s.ry 2024年第1期14卷 32-68页

作者： m.ryam.s. m. Aghaei Thies.Thiem.nn Departm.nt of Chem.s.ry College of Science United Arab Emirates University Al Ain United Arab Emirates

Terpenoids.with quinoid s.ructures.are found as.natural products. This.includes.s.eroidal quinones. quinones.with a s.cos.eroid s.ructure and m.roterpenoid quinones. Im.ortantly, catechol es.rogens.as.endogenous.m.tabolites.of es.radiol and es.rone are precurs.rs.of reactive quinones.and s.m.quinones. which are thought to contribute to es.rogen-induced carcinogenes.s. On the other hand, a num.er of quinones.that include s.bs.ituted naphthoquinones.and anthraquinones.are highly cytotoxic and have been us.d in cancer treatm.nt. This.m.kes.the s.ructures.interes.ing s.nthetic targets. The following is.a review of im.ortant natural and s.nthetic terpenoid and s.eroid quinone hybrids.

关键词： s.eroid s.cos.eroid m.roterpenoid Triterpenoid Quinone Anti-Tum.ur Agent Antibiotic Natural Product

s.ructural perform.nce of flexible freeform.panels.ubjected to wind loads

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Frontiers.of s.ructural and Civil Engineering 2024年第6期18卷 851-869页

作者： Yong yoo Zaryab s.AHID Renzhe CHEN m.ria KOLIOU Anas.as.a m.LIANA Negar KALANTAR Zachry Departm.nt of Civil and Environm.ntal Engineering Texas A&M UniversityCollege StationTX 77843USA J.m.ke Walker'66 Departm.nt of m.chanical Engineering Texas A&M UniversityCollege StationTX 77843USA Architecture Divis.on California College of the ArtsSan FranciscoCA 94107USA

An increas.d num.er of hurricanes.and tornadoes.have been recorded worldwide in the las. decade,while res.arch efforts.to reduce wind-related dam.ge to s.ructures.becom. *** architecture,which focus.s.on generating com.lex curved s.apes.including s.ream.ined s.apes.has.recently gained *** s.udy focus.s.on inves.igating the potential of kerf panels.which have unique flexibility depending on the cut patterns.and dens.ties.to generate com.lex s.apes.for facades.and their perform.nce under wind *** inves.igate the kerf panel's.potential capacity agains. wind loads.s.atic and dynam.c analys.s.were conducted for two kerf panel types.with different cut dens.ties.and pre-deform.d *** was.obs.rved that although s.lid panels.res.lt in s.aller dis.lacem.nt am.litudes.s.res.es.and s.rains.in s.m. cas.s.the kerf panels.allow for global and local cell deform.tions.res.lting in s.res. reduction in various.locations.with the potential to reduce dam.ge due to overs.res. in *** the predeform.d kerf panels.it was.obs.rved that both the overall s.res. and s.rain res.ons.s.in kerf cut arrangem.nts.were lower than thos. of the flat-s.aped *** s.udy s.ows.the prom.s. of the us. of kerf panels.in achieving both des.gn flexibility and perform.nce dem.nds.when expos.d to s.rvice *** that this.newly propos.d architectural configuration(des.gn paradigm.for facades.could revolutionize s.ructural engineering by pus.ing com.lex freeform.s.apes.to a s.andard practice that intertwines.aes.hetic argum.nts.building perform.nce requirem.nts.and m.terial des.gn cons.derations.has.the potential for s.gnificant practical applications.

关键词： freeform.s.ructure kerfing m.thod wind load analys.s cladding com.onent

Engineering of efficient vis.ble light photocatalys.s.Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) com.os.tions

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Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： s.m.Yakout A.m.Yous.ef Inorganic Chem.s.ry Departm.nt National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalys.s. widening the wavelengths.abs.rption range of catalys.s.as.well as.aborting the recom.ination of the photoexcited charge carriers.electrons.holes.pairs. are of param.unt *** the current s.udy, we report the photocatalytic characteris.ics.of four com.os.tions.com.os.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.for two harm.ul dyes.Congo red and m.thylene blue). The X-ray diffraction technique verified the configuration of m.xed anatas. and rutile phas.s.in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pos.es. anatas. phas. only. The changes.of the band gap s.ructure and dim.ns.ons.of the unit cell volum. of TiO_(2)confirm.the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)and La^(3+)ions. Rem.rkable widening of wavelengths.abs.rption with form.tion of long abs.rption tails.were found in TiO_(2)(3.13 e V) through ins.rtion of La^(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)s.m.les.exhibit a vis.ble light band gap of 2.3 and 2.7 e V, res.ectively. Bas.d on s.m.im.ges. incorporation of Cu^(2+)and La^(3+)ions.influences.the s.rface m.rphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pres.nt enhanced photocatalytic activity towards.Congo red dye degradation com.ared to pure one under natural s.lar s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. exhibits.s.perior photocatalytic activity of 96% for 10 ppm.CR dye in 20 m.n as.well as.above average photocatalytic efficiency of 63% for 30 ppm.CR dye in 120 m.n. As.well, it s.owed acceptable photodegradation activity of 52% for 30 ppm.m. s.lution in 140 m.n of s.nlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. can be clarified in term.0}of higher ch

关键词： s.m.conductor TiO_(2) Rare earths Congo red m.thylene blue s.lar s.ectrum Photodegradation

Interworking between m.dbus.and internet of things.platform.for indus.rial s.rvices

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Digital Com.unications.and Networks 2024年第2期10卷 461-471页

作者： s.erzod Elam.nov Hyeons.o s.n Bob Flynn s.ong Ki yoo Naqqas. Dils.ad Jaes.ung s.ng Departm.nt of Convergence Engineering for Intelligent Drone Sejong UniversitySouth Korea s.ncTechno Inc South Korea Exacta Global s.art s.lutions USA Coventry Univers.ty UK

In the era of rapid developm.nt of Internet of Things.IoT),num.rous.m.chine-to-m.chine technologies.have been applied to the indus.rial *** to the divergence of IoT s.lutions.the indus.ry is.faced with a need to apply various.technologies.for autom.tion and *** fact leads.to a dem.nd for an es.ablis.ing interworking m.chanis. which would allow s.ooth interoperability between heterogeneous.*** of the m.jor protocols.widely us.d today in indus.rial electronic devices.is.***,data generated by m.dbus.devices.cannot be unders.ood by IoT applications.us.ng different protocols.s. it s.ould be applied in a couple with an IoT s.rvice layer ***2m.a global IoT s.andard,can play the role of interconnecting various.protocols.as.it provides.flexible tools.s.itable for building an interworking fram.work for indus.rial ***,in this.paper,we propos. an interworking architecture between devices.working on the m.dbus.protocol and an IoT platform.im.lem.nted bas.d on onem.m.*** the propos.d architecture,we introduce the way to m.del m.dbus.data as.onem.m.res.urces.rules.to m.p them.to each other,procedures.required to es.ablis. interoperable com.unication,and optim.zation m.thods.for this.*** analyze our s.lution and provide an evaluation by im.lem.nting it bas.d on a s.lar power m.nagem.nt us. *** res.lts.dem.ns.rate that our m.del is.feas.ble and can be applied to real cas. s.enarios.

关键词： Internet of things Interoperability Interworking m.dbus onem.m

s.roprevalence s.rvey of HIV and Hepatitis.B Virus.and Behavioral Characteris.ics.am.ng Heavy Truck Drivers.along Port s.dan-Khartoum.Highways

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Open Journal of m.dical m.crobiology 2024年第1期14卷 11-22页

作者： s.ra s. Os.an Adam.A. m.ttar Om.ia m. Ham.d Faculty of Public Health Alzaiem Alazhari University Khartoum Sudan Faculty of m.dical Laboratory s.iences University of Medical Sciences & Technology Khartoum Sudan

The prevalence of hum.n im.unodeficiency virus.(AIDs. and hepatitis.B virus.am.ng heavy truck drivers.and their as.is.ants.has.been well docum.nted globally in correlation with their behavioral characteris.ics. The pres.nt s.udy aim.d to s.reen for hum.n im.unodeficiency virus.(HIV), hepatitis.B virus.(HBV), and behavioral characteris.ics.am.ng heavy truck drivers.in Port s.dan. A cros.-s.ctional s.udy was.conducted on 274 heavy truck drivers.and their as.is.ants.who us.d the highway Port s.dan-Khartoum.in Port s.dan city during 2019-2021. Data on behavioral characteris.ics.and s.bs.ance us. habits.were collected us.ng a s.ructured ques.ionnaire, and an ELIs. tes. was.us.d to s.reen for HIV and HBV infections.in the s.udy participants. The chi-s.uare tes., odds.ratio, and confidence intervals.were us.d to find the as.ociation between behavioral characteris.ics.and s.ropos.tive HIV/HBV. Of the 274 enrolled participants. the s.roprevalence rates.of HIV were 2.7% and HBV was.23.7%. Ninety-four (34.3%) of them.had a his.ory of high-ris. s.xual behavior outs.de of m.rriage;only two (0.7%) us.d condom.0}14.2% of participants.reported alcohol us.;and 1.1% reported drug us.. Univariate analys.s.revealed that having a s.x his.ory outs.de of m.rriage with ≥1 s.x partner and never us.ng a condom.with a s.ous. or cas.al partner were s.gnificant ris. factors.for HIV and HBV am.ng drivers. Fortunately, we found that m.s. of the drivers.reported low alcohol and drug us.. Concerning this.s.udy, the s.roprevalence of HIV and HBV is.highly as.ociated with a his.ory of having s.x outs.de of m.rriage and s.xual behavior am.ng truck drivers.and as.is.ances. Additional s.udies.are needed to further inves.igate other s.Is.and behavioral characteris.ics.as.ociated with factors.in truck drivers.as.is.ance in different truck s.op regions.in s.dan.

关键词： s.xual Trans.itted Infection Port s.dan Truck Drivers.As.is.ance