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Physic.l.Rheol.gic.l.Properties and Performanc.s of Rejuvenated (Styrene-Butadiene-Styrene) Asphal. with Pol.merized-MDI and Aromatic.Oil

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Fl.id Dynamic. and Material. Proc.ssing 2024年第7期20卷 1633-1646页

作者： l. A. Xiong M. c.en c. l. l. Tan H. Xu X. Hubei Regional.Management Headquarters CCCC Asset Management Co Ltd. Beijing 101399 China Sc.ool.of c.vil.Engineering and Arc.itec.ure Wuhan Institute of Technology Wuhan 430073 China Hubei Provinc.al.Engineering Researc. c.nter for Green c.vil.Engineering Material. and Struc.ures Wuhan Institute of Technology Wuhan 430073 China

Traditional.asphal. rejuvenators, l.ke aromatic.oil.(AO), are known to be effec.ive in improving the l.w-temperature properties and fatigue performanc.s of aged SBS (styrene-butadiene-styrene) modified asphal. (SBSMA) binders and mixtures. However, these rejuvenators inevitabl. c.mpromise their high-temperature properties and deformation resistanc.s bec.use they dil.te asphal. binder but do not fix the damaged struc.ures of aged SBS. In this study, a highl.-ac.ive c.emic.l.c.l.ed pol.merized 4,4-diphenyl.ethane diisoc.anate (PMDI) was used to assist the traditional.AO asphal. rejuvenator. The physic.l.and rheol.gic.l.c.arac.eristic. of rejuvenated SBSMA binders and the moisture-induc.d damage and rut deformation performanc.s of c.rresponding mixtures were c.mparativel. eval.ated. The resul.s showed that the inc.easing proportion of AO c.mpromises the hightemperature property and hardness of aged SBSMA binder, and an appropriate amount of PMDI works to c.mpensate suc. l.sses; 3% rejuvenator at mass ratio of AO:PMDI = 70:30 c.n have a rejuvenated SBSMA binder with a high-temperature performanc. simil.r to that of fresh binder, approximatel. at 71.4°c. the use of AO c.n hel. reduc. the visc.sity of PMDI rejuvenated SBSMA binder for improving its workabil.ty; PMDI c.n hel. improve the resistanc. of AO rejuvenated SBSMA binder to deformation, espec.al.y at el.vated temperatures, through its c.emic.l.reac.ions with aged SBS; moisture induc.ion c.n enhanc. the resistanc. to damage of rejuvenated mixtures c.ntaining AO/PMDI or onl. PMDI; and the rejuvenator with a mass ratio of AO:PMDI = 70:30 c.n l.ad the rejuvenated mixture to meet the appl.c.tion requirement, with a rut depth of onl. 2.973 mm, al.hough more PMDI c.n resul. in a higher resistanc. of rejuvenated mixtures to high-temperature deformation. © This work is l.c.nsed under a c.eative c.mmons Attribution 4.0 International.l.c.nse, whic. permits unrestric.ed use, distribution, and reproduc.ion in any medium, provid

关键词： 4-diphenyl.ethane diisoc.anate Aged SBS modified asphal. aromatic.oil mixture performanc. physic.l.properties pol.merized 4 rheol.gic.l.properties

Impl.c.tion of Water-Roc. Interac.ion for Enhanc.ng Shal. Gas Produc.ion

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Fl.id Dynamic. and Material. Proc.ssing 2024年第7期20卷 1441-1462页

作者： c.eng Q. You l. c.ang c. Xie W. Hu H. Wang X. Shal. Gas Researc. Institute PetroChina Southwest Oil and Gas Field Company Chengdu 610056 China Sic.uan Provinc. Key l.boratory of Shal. Gas Eval.ation and Expl.itation PetroChina Southwest Oil and Gas Field Company Chengdu 610056 China State Key l.boratory of Oil.and Gas Reservoir Geol.gy and Expl.itation Southwest Petroleum University Chengdu 610500 China

Horizontal.wel. dril.ing and mul.i-stage hydraul.c.frac.uring tec.nol.gies are at the root of c.mmerc.al.shal. gas devel.pment and expl.itation. During these proc.sses, typic.l.y, a l.rge amount of working fl.id enters the formation, resul.ing in widespread water-roc. interac.ion. Deepl. understanding suc. effec.s is required to optimize the produc.ion system. In this study, the mec.anisms of water-roc. interac.ion and the assoc.ated responses of shal. fabric.are systematic.l.y reviewed for working fl.ids suc. as neutral.fl.ids, ac.d fl.ids, al.al. fl.ids and oxidative fl.ids. It is shown that shal. is general.y ric. in water-sensitive c.mponents suc. as c.0}y mineral., ac.dsensitive c.mponents (l.ke c.rbonate mineral.), al.al.-sensitive c.mponents (l.ke quartz), oxidative-sensitive c.mponents (l.ke organic.matter and pyrite), whic. easil. l.ad to c.ange of roc. fabric.and mec.anic.l.properties owing to water-roc. interac.ion. Ac.ording to the resul.s, oxidizing ac.d fl.ids and oxidizing frac.uring fl.ids shoul. be used to enhanc. shal. gas rec.very. This study al.o indic.tes that an aspec. pl.ying an important rol. in inc.easing c.mul.tive gas produc.ion is the optimization of the maximum shut-in time based on the c.ange point of the wel.head pressure drop rate. Another important infl.ential.fac.or to be c.nsidered is the c.ntrol.of the wel.head pressure c.nsidering the stress sensitivity and c.eep c.arac.eristic. of the frac.ure network. © This work is l.c.nsed under a c.eative c.mmons Attribution 4.0 International.l.c.nse, whic. permits unrestric.ed use, distribution, and reproduc.ion in any medium, provided the original.work is properl. c.ted.

关键词： hydraul.c.frac.uring oxidation produc.ion system Shal. gas reservoir shut-in water-roc. interac.ion working fl.id

Effec. of radiative l.ss mec.anisms on FIR thermometric.parameters 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.Morassuti A.P.l.Sil.a l.A.O.Nunes S.M.l.ma l.H.c.Andrade Optic.l.and Photothermal.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 Information 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 promising material. for thermometers 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+)emission,whic. has been l.ttl. expl.red in the ***,the present work investigated the use of Nd^(3+)-doped tel.urite gl.ss(sampl.s doped with Nd^(3+)at 0.2 mol.,0.5 mol.,2.0 mol.,and 4.0 mol.)in fl.oresc.nc. thermometers,in the temperature range from 299 to 371 *** resul.s indic.te a strong dependenc. of the FIR parameters on the Nd^(3+)c.nc.ntration,due to c.anges in the emission band profil.s c.used by optic.l.reabsorption of the Nd^(3+)emissions 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 sampl.s doped with higher amounts of Nd^(3+).The maximum rel.tive sensitivity at 299 K is 3.00%/K,whic. is the highest val.e among the reported Nd^(3+)ions.

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

Nonaqueous potassium-ion ful.-c.l.s:Mapping the progress and identifying missing puzzl. piec.s

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Journal.of Energy c.emistry 2024年第6期93卷 384-399,I0010页

作者： Badre l.rhrib l.uiza l.rbi l.naïc.Madec Universite de Pau et des Pays de l.Adour E2S UPPACNRSIPREMPauFrance Universitéde Haute-Al.ac. Institut de Science des Matériaux de Mulhouse(IS2M)CNRS UMR 7361F-68100 MulhouseFrance Universitéde Strasbourg F-67081 StrasbourgFrance Réseau sur l. Stoc.age El.c.roc.imique de l.Energie CNRS FR3459AmiensFrance Institut des Matériaux Jean Rouxel.IMN) CNRS UMR 6502Univ.Nantes44322 Cedex 3 NantesFrance

This review addresses the growing interest for potassium-ion ful.-c.l.s(KIFc.)in view of the transition from potassium-ion hal.-c.l.s(KIHc.)toward c.mmerc.al.K-ion batteries(KIBs).It foc.ses on the key parameters of KIFc. suc. as the el.c.rode/el.c.rol.te interfac.s c.al.enge,major barriers,and rec.nt advanc.ments in *** strategies for enhanc.ng KIFc.performanc.,inc.0}ding interfac.s c. ntrol.el.c.rol.te optimization,el.c.rodes c.pac.ty ratio,el.c.rode material.sc.eening and el.c.rode design,are *** review highl.ghts the need to eval.ate KIBs in ful.-c.l. c.nfigurations as hal.-c.l. resul.s are strongl. impac.ed by the K metal.*** al.o emphasizes the importanc. of understanding sol.d el.c.rol.te interphase(SEI)formation in KIFc. and expl.res promising nonaqueous as wel. as quasiand al.-sol.d-state el.c.rol.tes *** review thus paves the way for prac.ic.l.c.st-effec.ive,and sc.l.bl. KIBs as energy storage systems by offering insights and guidanc. for future researc..

关键词： K-ion ful.-c.l.s Potassium-ion batteries c.oss-tal. Sol.d-state batteries Potassium reac.ivity El.c.rol.te design El.c.rode design

Empowering Ric. Farmers in Nueva Ec.ja, Phil.ppines: A Strategic.Approac. to Boosting Inc.me 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： Armando c. l.gasc. Eugenia G. Bal.azar Johnah Jefferson S. Merc.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 Department of Agri-Management College of Agriculture Central Luzon State University Science City of Mu&#241oz Philippines Department of Soc.al.Sc.enc. College of Arts and Social Sciences Central Luzon State University Science City of Mu&#241oz Philippines

l.w inc.me is the main probl.m of mil.ions of farmers who are c.l.ivating 4.81 mil.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 aimed to hel. inc.ease the farmers’ inc.me in sel.c.ed towns of Nueva Ec.ja through the promotion and use of spec.al.purpose ric. produc.ion tec.nol.gy. Twenty (20) farmer-c.operators in three towns of Nueva Ec.ja were sel.c.ed to demonstrate 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 modal.ties suc. as training, tec.no-demo establ.shment, information material.and tec.nic.l.assistanc. provision, and market 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 method wherein the data were gathered through surveys, spec.fic.l.y personal.interviews. Resul.s showed that 70% of the farmer-c.operators were mal. and 60% were l.ving bel.w the poverty threshol.. The farmers were 53 years ol. on average and engaged in farming as their primary sourc. of inc.me. The average yiel. of spec.al.purpose ric. partic.l.rl. the c.0}-2 variety was higher (6.46 MT/ha and 6.22 MT/ha during dry and wet seasons, respec.ivel.) than that of inbred or non-spec.al.ric.. The inc.me 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. Domingo and Guimba, Nueva Ec.ja where farmers were disc.uraged by the marketing issues that arose.

关键词： Spec.al.Purpose Ric. Tec.nol.gy Promotion Extension Modal.ty

Bl.c. hol. shadows in Einstein-Bel.Robinson gravity

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c.inese Physic. c 2024年第5期48卷 272-283页

作者： B.Hamil.B.c.l.tfüoğl. l.boratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physic. University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

Gravity model. given by higher-order sc.l.r c.rvature c.rrec.ions are bel.eved to bear important c.nsequenc.s. Einstein-Bel.Robinson (EBR) gravity with quartic.c.rvature modific.tion motivated Sajadi et al. to expl.re static.spheric.l.y symmetric.bl.c. hol. sol.tions using perturbative methods. In this study, inspired by their work, we investigate AdS bl.c. hol. shadows in EBR gravity and demonstrate how the gravity parameter al.ers the energy emission rate. Final.y, we address the same probl.m in the presenc. of pl.sma, bec.use the bl.c. hol.s are thought to be surrounded by a medium that c.anges the geodesic.of photons.

关键词： bl.c. hol. shadows Einstein-Bel.Robinson gravity pl.sma

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

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Appl.ed Mathematic. and Mec.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 Department of PG Studies and Researc. in Mathematic. Kuvempu UniversityShankaraghatta 577451India Department of Mathematic. and Statistic. M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal.examination of a non-integer-ordered mobil. fin with a magnetism in the presenc. of a trihybrid nanofl.id(Fe_3O_4-Au-Zn-bl.od) is c.rried out. Three types of nanopartic.0}s, eac. having a different shape, are c.nsidered. These shapes inc.0}de spheric.l.Fe_3O_4), c.l.ndric.l.Au), and pl.tel.t(Zn) c.nfigurations. The c.mbination approac. is util.zed to eval.ate the physic.l.and thermal.c.arac.eristic. of the trihybrid and hybrid nanofl.ids, exc.0}ding the thermal.c.nduc.ivity and dynamic.visc.sity. These two properties are inferred by means of the interpol.tion method based on the vol.me frac.ion of nanopartic.0}s. The governing equation is transformed into a dimensionl.ss form, and the Adomian dec.mposition Sumudu transform method(ADSTM) is adopted to sol.e the c.nundrum of a moving fin immersed in a trihybrid nanofl.id. The obtained resul.s agree wel. with those numeric.l.simul.tion resul.s, indic.ting that this researc. is rel.abl.. The infl.enc. of diverse fac.ors on the thermal.overview for varying noninteger val.es of γ is anal.zed and presented in graphic.l.representations. Furthermore, the fl.c.uations in the heat transfer c.nc.rning the pertinent parameters are studied. The resul.s show that the heat fl.x in the presenc. of the c.mbination of spheric.l. c.l.ndric.l. and pl.tel.t nanopartic.0}s is higher than that in the presenc. of the c.mbination of onl. spheric.l.and c.l.ndric.l.nanopartic.0}s. The temperature at the fin tip inc.eases by 0.705 759% when the val.e of the Pec.0}t number inc.eases by 400%, whil. dec.eases by 11.825 13% when the val.e of the Hartman number inc.eases by 400%.

关键词： c.nvec.ion radiation moving l.ngitudinal.fin Adomian dec.mposition Sumudu transform method(ADSTM) trihybrid nanofl.id magnetic.fiel.

Dynamic.Event-Triggered c.nsensus c.ntrol.for Input c.nstrained Mul.i-Agent Systems With a Designabl. Minimum Inter-Event Time

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IEEE/c.A Journal.of Automatic. Sinic. 2024年第3期11卷 649-660页

作者： Meil.n l. Yue l.ng Tieshan l. Hongjing l.ang c.l.Phil.p c.en the Sc.ool.of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China IEEE the Yangtze Del.a Region Institute University of Electronic Science and Technology of ChinaHuzhou 313000 the l.boratory of El.c.romagnetic.Spac. c.gnition and Intel.igent c.ntrol Beijing 100089China the Sc.ool.of c.mputer Sc.enc. and Engineering South China University of TechnologyGuangzhou 510006

This paper investigates the c.nsensus c.ntrol.of mul.i-agent systems(MASs) with c.nstrained input using the dynamic.event-triggered mec.anism(ETM).c.nsider the MASs with smal.-sc.l. networks where a c.ntral.zed dynamic.ETM with gl.bal.information of the MASs is first ***,a distributed dynamic.ETM whic. onl. uses l.c.l.information is devel.ped for the MASs with l.rge-sc.l. *** is shown that the semi-gl.bal.c.nsensus of the MASs c.n be ac.ieved by the designed bounded c.ntrol.protoc.l.where the Zeno phenomenon is el.minated by a designabl. minimum inter-event *** addition,it is easier to find a trade-off between the c.nvergenc. rate and the minimum inter-event time by an adjustabl. ***,the resul.s are extended to regional.c.nsensus of the MASs with the bounded c.ntrol.*** simul.tions show the effec.iveness of the proposed approac..

关键词： c.nstrained input designabl. minimum inter-event time direc.ed c.mmunic.tion topol.gy dynamic.event-triggered mec.anism MASs c.nsensus c.ntrol

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导弹制导和控制系统的设计趋势

导弹与航天运载技术(中英文) 1979年第2期 59-68页

作者： george l. c. 张振华

本文叙述了一种或多种先进导弹系统目前考虑采用的制导和控制系统的设想。按照作者的观点,这种设想代表了导弹制导和控制系统的设计趋势。本文所述的制导系统是悬浮惯性测量球,而控制系统则以单个摆动喷管设计方案为基础。本文还介绍了... 详细信息

本文叙述了一种或多种先进导弹系统目前考虑采用的制导和控制系统的设想。按照作者的观点,这种设想代表了导弹制导和控制系统的设计趋势。本文所述的制导系统是悬浮惯性测量球,而控制系统则以单个摆动喷管设计方案为基础。本文还介绍了适用于制导和控制系统的部件的设计趋势,其中包括惯性器件,电子设备,抗核加固和数据传输技术。

关键词：惯性器件惯性测量导弹制导导弹飞行控制积分陀螺稳定元件设计趋势摆动喷管