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Effect of cold-workin. on.corrosion.in.uced damage in.lug join.s

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Defen.e Tech.ology（防务技术） 2024年第6期36卷 175-182页

作者： Raman.th.M.n.Ch.kmath.L. Murth. h. Departmen. of Aerospace En.in.erin. Indian Institute of Technology-MadrasChennai 600036India Departmen. of Aeron.utical En.in.erin. KLS Gogte Institute of TechnologyBelagavi 590008India

Lug join.s are preferred join.ries for tran.ferrin. h.avy loads to paren. compon.n.s in.aerospace *** experien.e corrosion.due to en.iron.en.al con.ition.,improper surface fin.sh.s an. rubbin. displacemen. between.th. pin.an. *** causes damage of differen. sizes an. sh.pes n.ar th. *** degradation.due to corrosion.in.uced damage is modelled as a th.ough.pit at on. of th. iden.ified critical location. th.ough.stress *** effect of th.s pit on.fatigue crack in.tiation.life is ***-h.le is pre-stressed by cold-workin. an. th. ben.fits of in.ucin. plastic wake on.th. in.en.ed performan.e of th. lug join. durin. th. damages due to corrosion.are brough. out an. compared with.n.n.cold-worked *** an.lysis is performed on.th.s lug join. with.*** results obtain.d h.gh.igh. th. ben.fits of cold-workin. an. th. meth.dology can.be exten.ed to damage growth.an. an.lyse th. effect of surface treatmen.s for better structural in.egrity of compon.n.s of aerospace veh.cles.

关键词： Lug join. Corrosion Crack in.tiation Cold-workin. Structural in.egrity

Marin.an.glaciation.in.th. In.ian.subcon.in.n.——An.tomy an. global implication.

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Journ.l of Palaeogeograph. 2024年第2期13卷 293-308页

作者： h.n.Bh.ttach.rya Departmen. of Earth.Scien.es Techno India UniversityWest BengalSector VSalt LakeKolkata700091India

Detailed sedimen.ological an.lysis of th. Pokaran.Boulder Bed,represen.in. th. most basal un.t of th. n.oproterozoic-Lower Cambrian.Marwar Supergroup,clearly in.icates its glacial *** glacial sedimen.s are in.erpreted as an.ice-con.act submarin. fan.*** on.th. detrital an. in.0}rited zircon.population.of th. Marwar Supergroup sedimen.s an. in.erlayered pyroclastic deposits,a Marin.an.cryoch.on.of th. Cryogen.an.Period is en.isaged for th. Pokaran.Boulder *** well-preserved Ediacaran.elemen.s in.th. post-glacial sedimen.ary succession.also support a Cryogen.an.to Early Cambrian.age of th. Marwar *** glacial deposition.at th. base of th. Marwar Supergroup stren.th.n. th. region.l correlation.between.th. studied sedimen.s with.th. Lesser h.malayan.Blain.-Krol-Tal sedimen.s an. th. h.qf Supergroup of *** available zircon.ages an. paleomagn.tic data of th. Malan. Ign.ous suite,alon. with.th. Marin.an.glacial deposits,detrital zircon.ages,an. Ediacaran.fossil elemen.s of th. Marwar Supergroup add sign.fican. in.ormation.to th. n.oproterozoic Earth.h.story.

关键词： n.oproterozoic Marin.an.glaciation Diamictites Pokaran.Boulder Bed Marwar Supergroup

DFT in.estigation.of h.lf-metallic ferromagn.tic rare earth.based spin.ls Mgh._(2)Z_(4)(Z=S,Se)

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Journ.l of Rare Earth. 2024年第1期42卷 121-128,I0005页

作者： Maiza Zan.b Mumtaz Man.oor n.A.n.or M.Waqas Iqbal Mazia Asgh.r h.h.h.gazy A.Laref Departmen. of Ph.sics Riphah International UniversityLahore CampusPakistan Research.Cen.re for Advan.ed Materials Scien.e King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Departmen. of Ph.sics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Departmen. of Ph.sics an. Astron.my College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

h.lf-metallic ferromagn.tism,mech.n.cal as well as th.rmoelectric properties for rare earth.based spin.ls Mgh._(2)Z_(4)(Z=S,Se)were in.estigated usin. den.ity fun.tion.l th.ory(DFT).Structural optimization.was don. with.Perdew-Burke-Eh.en.orf(PBE)sol-gen.ralized gradien. approximation.GGA)to calculate th. lattice con.tan. of both.spin.ls comparable to experimen.al *** addition.Born.stability criteria an. n.gative formation.en.rgy sh.w th.t our studied spin.ls are also structurally an. dyn.mically stable in.th. cubic *** ferromagn.tic(FM)state stability,we also calculated th. en.rgy differen.es amon. FM,an.iferromagn.tic(AFM),an. n.n.magn.tic(n.)***,Curie temperatures of ferromagn.tic ph.ses were also *** used Tran.-Blah. improved BeckeJoh.son.TB-mBJ)poten.ial fun.tion.l for electron.cs as well as magn.tic ch.racteristics,wh.ch.lead to th. con.isten. explan.tion.of h.lf-metallic ferromagn.tism,represen.in. th. wh.le ban.-occupan.y in.material with.exact detail of den.ity of states(DOS).Th. stable FM state was examin.d in.spin.ls due to th. exch.n.e splittin. of h. cation.con.istin. of p-d h.bridization. compatible with.th. result ach.eved for electron.cs ban. structure an. ***,spin.magn.tic momen. was explain.d in.terms of an.on.cation.an. sh.rin. ch.rge on.studied *** addition.th. calculated th.rmoelectric properties clearly sh.w th.t operation.ran.e of th.se systems may be utilized by future experimen.al works for iden.ifyin. th. poten.ial application. of th.se systems.

关键词： h.-based spin.ls DFT simulation. Mech.n.cal parameters Electron.c properties h. ferromagn.tism Figure of merit

A h.drodyn.mic modellin. of wave-activated bodies for wavelet marin. region.

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Clean.En.rgy 2024年第2期8卷 35-47页

作者： J.S.Peh.Moh.mmed W.Muh.eldeen.n.h.Sh.aib Mech.n.cal En.in.erin. Departmen. Faculty of EngineeringTechnology&Built EnvironmentUCSI UniversityKuala Lumpur56000Malaysia MTC En.in.er Sdn.Bh. Shah AlamSelangorMalaysia

Recen.ly,most wave en.rgy research.h.s targeted sea areas with.h.gh.power den.ity un.er extreme wave con.ition. for *** tren. often.leads to h.gh.r en.rgy costs for wave power ***,man. marin. areas with.low power den.ity,ch.racterized by wavelet con.ition. an. less destructive forces th.n.extreme wave con.ition.,remain.***,th.s study aimed to propose a wave-activated body model for sea region. with.wavelet *** wave-activated body design.process en.ompassed site selection.parameter determin.tion.geometry design.comparison.an. performan.e evaluation.usin. th. An.YS®AQWA *** results in.icated th.t th. proposed device ach.eved th. desired h.ave motion.with.an.amplitude ran.e of 1.2 to-2.5 m,validatin. its poten.ial for deploymen. in.marin. region. with.wavelet ***,wh.le th. proposed design.is optimized for wavelet con.ition.,it was foun. to h.ve poten.ial limitation. in.extreme wave *** observation.emph.sizes th. ch.llen.e of formulatin. a gen.ralized design.suitable for both.***,it is pivotal for wave-activated body design. to be customized based on.th. specific ocean.con.ition. th.y target,un.erscorin. th. n.ed for specialized design. of wave en.rgy con.erters th.t con.ider th. un.que wave ch.racteristics of th.ir deploymen. sites.

关键词： wave en.rgy con.erter South.Ch.n. sea ren.wable an. sustain.ble en.rgy wavelet An.YS AQWA h.drodyn.mic wave-activated bodies

Tilted global solar irradian.e in.Bah.ain.an.experimen.al study

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Clean.En.rgy 2024年第2期8卷 27-34页

作者： n.Vasilikos C.Georgan.opoulou h.Alajaimi S.h.Almajed M.Ah.ed D.Math.oulakis Sch.ol of Mech.n.cal En.in.erin. Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain Sch.ol of Mech.n.cal En.in.erin. National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In.th. presen. work,tilted global solar irradian.e data are presen.ed an. an.lysed,measured for a period of 1 year on.th. campus of Bah.ain.Polytech.ic,Kin.dom of Bah.ain.from both.a fixed ph.tovoltaic pan.l an. a movin. on. via a two-axis solar *** fixed pan.l faces south.with.an.an.le of 26°with.respect to th. h.rizon.al,coin.idin. with.th. local geograph.cal *** secon. pan.l is moved by two motors,con.rolled by a global position.n. system an. suitable software so th.t th. Sun.s rays are perpen.dicular to th. pan.l surface.A pyran.meter is in.talled on.each.pan.l,recordin. th. tilted global solar irradian.e,stored by usin. a data *** an.lysis of th. data obtain.d sh.ws a 33%solar en.rgy gain.on.an.an.ual basis for th. movin. pan.l(2780 versus 2088 kWh.m^(2) on.th. fixed pan.l).More importan.ly,in.Jun.,wh.n.th. en.rgy deman. in.Bah.ain.is elevated due to th. in.reased residen.ial coolin. loads,th. solar en.rgy received by th. movin. pan.l is 54.7%h.gh.r compared with.th.t of th. fixed *** a percen.age basis,th. in.rease in.solar en.rgy from th. movin. pan.l is profoun. in.th. early morn.n. an. late even.n. ***,th. reduction.in.th. solar en.rgy received by th. fixed pan.l from May to Jun. does n.t appear in.th. movin. pan.l because of th. adjustable orien.ation.of th. *** th. year,th. mean.daily solar power varies between.0.37 an. 0.56 kW/m^(2) for th. fixed pan.l,an. 0.45 an. 0.70 kW/m^(2) for th. movin. *** win.er,solar en.rgy fluctuation. are elevated due to erratic weath.r con.ition. th.t presen. a peak stan.ard deviation.of 28%of th. correspon.in. *** data presen.ed are useful for poten.ial solar in.estmen.s in.Gulf coun.ries.

关键词： tilted solar irradian.e ren.wable en.rgy solar trackin. ph.tovoltaic Gulf Cooperation.Coun.il Coun.ries

Empirical model for fusion.cross section. of Ca-in.uced reaction.

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Ch.n.se Ph.sics C 2024年第3期48卷 126-132页

作者： Reddi Ran..L n.Sowmya K.n.Sridh.r h.C.Man.un.th. M.M.Armstron. Arasu Departmen. of Ph.sics St.Joseph's College(Autonomous)Affiliated to Bharathidasan UniversityTiruchirappalli620002TNIndia Departmen. of Ph.sics Govt.First.Grade CollegeChikkaballapur-562101KarnatakaIndia Departmen. of Ph.sics Govt.First.Grade CollegeMalur-563160KarnatakaIndia Departmen. of Ph.sics Govt.First.Grade CollegeDevanahalli-562110KarnatakaIndia

A n.w empirical formula for th. astroph.sical S-factor h.s been.suggested as a fun.tion.of th. Coulomb in.eraction.parameter,cen.er of mass en.rgy,an. barrier *** 22 fusion.reaction. with.^(40,48)Ca as projectiles were con.idered for differen. targets,leadin. to compoun. n.clei with.atomic an. mass n.mbers varyin. between.40≤Z≤≤Z≤112 an. 88≤A≤27888≤A≤278,*** fusion.cross-section. h.ve been.estimated usin. th. geometric factor,th. Gamow-Sommerfield factor,an. th. empirical formula for th. *** study's fin.in.s sh.wed better agreemen. with.th.se of available experimen.s wh.n.compared to Won.'s *** presen. work leads to a smaller stan.ard deviation.value th.n.Won.'s formula wh.n.used to correlate th. experimen.al data of calcium-in.uced fusion.***'s formula provides a good approximation.of fusion.cross-section. wh.n.th. cen.er of mass en.rgy is below th. fusion.barrier wh.n.compared to above th. fusion.barrier.

关键词： fusion.cross-section. Won. formula Gamow-Sommerfield-factor Geometric-factor S-factor

En.oscopic treatmen. of biliopan.reatic path.logy in.patien.s with.Wh.pple's pan.reaticoduoden.ctomy surgical varian.s: Lesson. learn.d from sin.le-balloon.en.eroscopy-assisted ERCP

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h.patobiliary & Pan.reatic Diseases In.ern.tion.l 2024年第5期23卷 509-514页

作者： Rodrigo Garcés-Durán.Lauren. Mon.n. Pierre h.Deprez h.bert Piessevaux Tom G Moreels Departmen. of Gastroen.erology an. h.patology Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

Backgroun.: En.oscopic treatmen. of biliopan.reatic path.logy is ch.llen.in. due to surgically altered an.tomy after Wh.pple's pan.reaticoduoden.ctomy. Th.s study aimed to evaluate th. feasibility an. safety of sin.le-balloon.en.eroscopy-assisted en.oscopic retrograde ch.lan.iopan.reatograph.(SBE-ERCP) to treat biliopan.reatic path.logy in.patien.s with.Wh.pple's pan.reaticoduoden.ctomy surgical varian.s. Meth.ds: We retrospectively an.lyzed 106 SBE-ERCP procedures in.46 patien.s with.Wh.pple's varian.s. Tech.ical an. clin.cal success rates an. adverse even.s were evaluated. Results: Biliary SBE-ERCP was performed in.34 patien.s an. pan.reatic SBE-ERCP in.17, in.ludin. 5 with.both.in.ication.. From a total of 106 SBE-ERCP procedures, 76 were biliary in.ication.with.tech.ical success rate of 68/76(90%) procedures an. clin.cal success rate of 30/34(88%) patien.s. Mild adverse even. rate was 8/76(11%), with.ut serious adverse even.s. From a total of 106 SBE-ERCP procedures, 30 were pan.reatic in.ication.with.tech.ical success rate of 24/30(80%) procedures( P = 0.194 vs. biliary SBEERCP) an. clin.cal success rate of 11/17(65%) patien.s( P = 0.016 vs. biliary SBE-ERCP). Mild adverse even. rate was 6/30(20%)( P = 0.194 vs. biliary SBE-ERCP), with.ut serious adverse even.s. After SBE-ERCP failure, en.oscopic ultrasoun.-guided drain.ge, percutan.ous drain.ge an. redo surgery were altern.tive th.rapeutic option.. Con.lusion.: Biliopan.reatic path.logy after Wh.pple's pan.reaticoduoden.ctomy varian.s can.be treated usin. SBE-ERCP with.ut serious adverse even.s. Tech.ical an. clin.cal success rates are h.gh.for biliary in.ication., wh.reas clin.cal success rate of pan.reatic in.ication. is sign.fican.ly lower. SBE-ERCP can.be con.idered as first-lin. treatmen. option.in.th.s patien. group with.surgically altered an.tomy.

关键词： En.eroscopy En.oscopic retrograde ch.lan.iopan.reatograph. Pan.reaticoduoden.ctomy Surgically altered an.tomy Wh.pple’s procedure

Biosyn.h.sized CS-MgO/zeolite h.brid material:An.efficien. adsorben. for ch.orpyrifos removal-Kin.tic studies an. respon.e surface meth.dology

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Emergin. Con.amin.n.s 2024年第3期10卷 304-317页

作者： Moh.mmed T.M.h.h.mad Belal n.A.Mah.an Cen.ral Laboratory for En.iron.en.al Quality Mon.torin. National Water Research CenterEgypt

Th. prevalen.e of organ.ph.sph.te pesticides in.aquatic en.iron.en.s raises severe con.ern. on.a global ***,an.in.ecticide,is in.luded in.a class of organ.ph.sph.te *** is widely used on.agricultural lan.s to con.rol pests in.cotton.fruit,an. *** acute toxicity of ch.orpyrifos is still dan.erous to all aquatic livin. *** th. treatmen. of water con.amin.ted with.ch.orpyrifos is an.importan. *** recen. decade h.s witn.ssed adsorption.tech.ology emergin. as an.advan.ed organ.ph.sph.te pesticide wastewater treatmen. with.great poten.ial an. a gran. blueprin.,in.wh.ch.th. specific surface area an. active sites of th. adsorben. are con.idered to be th. two most importan. ch.racteristics largely impactin. th. adsorption.*** th.s study,a CS-MgO/Zeolite composite was prepared by th. microbial meth.d as an.effective adsorben. for th. removal of ch.orpyrifos from an.aqueous *** adsorben.'s properties were carefully ch.racterized usin. Xray diffraction.scan.in. electron.microscopy,an. Fourier-tran.form in.rared *** refin.men. of experimen.al con.ition.,en.ompassin. variation. in.adsorben. dosage,con.act time,an. ch.orpyrifos con.en.ration.at five discrete levels,was systematically un.ertaken.th.ough.th. utilization.of a composite cen.ral design.rooted in.respon.e surface *** solution.ph.played a key role in.ch.orpyrifos removal,an. a ph.of 7.0 was selected accordin. to its h.gh.adsorption.*** h.gh.st removal(80.9%)of ch.orpyrifos by CS-MgO/Zeolite was obtain.d at an.optimum ph.of 7,a con.act time of 40 min.an.adsorben. dosage of 0.4 g/L,an. a ch.orpyrifos con.en.ration.of 5 mg/L^(-1).Th. adsorption.results were h.gh.y fitted with.th. Freun.lich.adsorption.isoth.rm model,an. th. maximum adsorption.was 83.3 mg/*** studies in.icate th.t th. removal of ch.orpyrifos followed th. pseudo-secon.order model of adsorption.0.994).Th. th.rmodyn.mic parameters in.icate th. spon.a

关键词： Ch.orpyrifos adsorption CS-MgO/Zeolite Respon.e surface meth.dology

A con.ise review on.surface an. structural modification.of porous zeolite scaffold for en.0}n.ed h.drogen.storage

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Ch.n.se Journ.l of Ch.mical En.in.erin. 2024年第6期70卷 33-53页

作者： B.A.Abdulkadir R.S.R.Moh. Zaki A.T.Abd Wah.b S.n.Miskan.An.0}Tam n.uyen.Dai-Viet n.Vo h.D.Setiabudi Cen.re for Research.in.Advan.ed Fluid&Processes Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Faculty of Ch.mical&Process En.in.erin. Tech.ology Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Cen.er of Excellen.e for Green.En.rgy an. En.iron.en.al n.n.materials(CE@GrEEn. Nguyen Tat Thanh University300A Nguyen Tat ThanhDistrict 4Ho Chi Minh City 755414Viet Nam

In.estigatin. zeolites as h.drogen.storage scaffolds is imperative due to th.ir porous n.ture an. favorable ph.sicoch.mical ***,th. storage capacity of th. un.odified zeolites h.s been.rath.r un.atisfactory(0.224%-1.082%(mass))compared to its modified ***,th. con.emporary focus on.en.0}n.in. h.drogen.storage capacities h.s led to sign.fican. atten.ion.towards th. utilization.of modified zeolites,with.studies explorin. surface modification. th.ough.ph.sical an. ch.mical treatmen.s,as well as th. in.egration.of various active *** en.0}n.ed h.drogen.storage properties of zeolites are attributed to th. presen.e of alumin.silicates from alkalin. an. alkalin.-earth.metals,resultin. in.in.reased storage capacity th.ough.in.eraction. with.th. ch.rge den.ity of th.se ***,th.re is a great deman. to critically review th.ir role such.as well-defin.d topology,pore structure,good th.rmal stability,an. tun.ble h.droph.licity in.en.0}n.ed h.drogen.*** article aimed to critically review th. recen. research.fin.in.s based on.modified zeolite performan.e for en.0}n.ed h.drogen.*** of th. factors affectin. th. h.drogen.storage capacities of zeolites th.t can.affect th. rate of reaction.an. th. stability of th. adsorben.,like pressure,structure,an. morph.logy were studied,an. ***,future perspectives,recommen.ation.,an. direction. for modified zeolites were discussed.

关键词： Zeolites h.drogen.storage Surface modification Adsorption Active metal