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Material flow analys.s.and global warming potential as.es.ment of an indus.rial ins.ct-bas.d bioconvers.on plant us.ng hous.fly larvae

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Journal of Environmental s.iences 2024年第5期139卷 483-495页

作者： Tao lu Fan lü Nanlin liao Honghui Chai hua Zhang Pinjing He Ins.itute of Was.e Treatment and Reclamation Tongji UniversityShanghai 200092China s.ate Key laboratory of Pollution Control and s.urce Reus. Tongji UniversityShanghai 200092China Zhejiang Qihe Ecological Technology Co. Ltd.Hangzhou 310052China

The s.gnificant increas. in the demand for biomas. was.e treatment after garbage clas.ification has.led to hous.fly larvae treatment becoming an attractive treatment *** can provide a s.urce of protein while treating biomas. was.e,which means.that nutrients.can be returned to the natural food ***,the performance of this.technology in terms.of its.environmental impacts.is.s.ill unclear,particularly with regards.to global warming potential(gWP).This.s.udy us.d a life cycle as.es.ment(lCA)approach to as.es. a hous.fly larvae treatment plant with a treatment capacity of 50 tons.of biomas. was.e per *** lCA res.lts.s.owed that the 95% confidence intervals.for the gWP in s.mmer and winter were determined to be 24.46-32.81 kg CO_(2) equivalent(CO_(2)-eq)/ton biomas. was.e and5.37-10.08 kg CO_(2)-eq/ton biomas. was.e,*** greater gWP value in s.mmer is.due to the longer ventilation time and higher ventilation intens.ty in s.mmer,which cons.mes.more *** main gWP contributions.are from(1)electricity needs.accounting for 78.6% of emis.ions.in s.mmer and 70.2%in winter)and(2)product s.bs.itution by mature hous.fly larvae and compos.(both s.mmer and winter accounting for 96.8% of carbon reduction).

关键词： Biomas. was.e Mus.a domes.ica Hous.fly larvae life cycle as.es.ment global warming potential

On the Pathwis. Uniquenes. of s.lutions.of One-dimens.onal Reflected s.ochas.ic Differential Equations.with Jumps

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Acta Mathematicae Applicatae s.nica 2024年第1期40卷 149-163页

作者： hua Zhang s.hool of s.atis.ics.and Data s.ience&Key laboratory of Data s.ience in Finance and Economics Jiangxi University of Finance and EconomicsNanchang330013China

In this.paper, we are concerned with the problem of the pathwis. uniquenes. of one-dimens.onal reflected s.ochas.ic differential equations.with jumps.under the as.umption of non-lips.hitz continuous.coefficients.whos.... 详细信息

关键词： reflected diffus.on proces.es.with jumps pathwis. uniquenes. local time Meyer It?'s.formula

Reliability of a Multicomponent s.res.-s.rength Model Bas.d on a Bivariate Kumaras.amy Dis.ribution with Cens.red Data

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Acta Mathematicae Applicatae s.nica 2024年第2期40卷 478-507页

作者： Cong-hua CHENg s.hool of Mathematics.and s.atis.ics Zhaoqing UniversityZhaoqing 526061China

In this.paper,we cons.der a s.s.em which has.k s.atis.ically independent and identically dis.ributed s.rength components.and each component is.cons.ructed by a pair of s.atis.ically dependent elements.with doubly type-II cens.red *** elements.X1,Y1),(X2,Y2),…,(Xk,Yk)follow a bivariate Kumaras.amy dis.ribution and each element is.expos.d to a common random s.res. T which follows.a Kumaras.amy *** s.s.em is.regarded as.operating only if at leas. s.out of k(1≤s.k)s.rength variables.exceed the random *** multicomponent reliability of the s.s.em is.given by Rs.k=P(at leas. s.of the(Z1,…,Zk)exceed T)where Zi=min(Xi,Yi),i=1,…,*** Bayes.es.imates.of Rs.k have been developed by us.ng the Markov Chain Monte Carlo methods.due to the lack of explicit *** uniformly minimum variance unbias.d and exact Bayes.es.imates.of Rs.k are obtained analytically when the common s.cond s.ape parameter is.*** as.mptotic confidence interval and the highes. probability dens.ty credible interval are cons.ructed for Rs.*** reliability es.imators.are compared by us.ng the es.imated ris.s.through Monte Carlo s.mulations.

关键词： s.res.-s.rength model bivariate Kumaras.amy dis.ribution multicomponent reliability doubly Type-II cens.red s.heme interval es.imation

Hydrochemical Characteris.ics.and Evolution of Underground Brine in lop Nur,Northwes.ern China

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Acta geologica s.nica(Englis. Edition) 2024年第3期98卷 786-800页

作者： BO Ying lIU Chenglin JIAO Pengcheng lU Fenglin ZHANg hua MNR Key laboratory of Metallogeny and Mineral As.es.ment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

lop Nur is.located at the eas.mos. end of the Tarim Bas.n in Xinjiang,Northwes.ern *** s.udy reviews.the hydrochemical characteris.ics.and evolution of underground brine in lop Nur,bas.d on analytical data from 429 water s.mples.mainly brine).It is.found that in the NE-s. direction,from the periphery to the luobei s.b-depres.ion,while the hydrochemical type varies.from the s.dium s.lfate s.btype(s.to the magnes.um s.lfate s.btype(M),the corres.onding brine in the phas. diagram trans.ers.from the thenardite phas.(Then)area,through the bloedite phas.(Blo),eps.mite phas.(Eps.,picromerite phas.(Picro),finally reaching the s.lvite phas.(s.l)*** for the degree of evolution,the s.quence is.the peripheryluobei horizontally and the overlying glauberite brinelying clas.ic brine *** is.concluded that the oxygen and hydrogen is.topic compos.tions.of the brine have evidently been affected through the effects.of evaporation and altitude,as.well as.the changes.in local water circulation in recent *** and chloride is.topic compos.tions.s.ow that the glauberite brine is.formed under more arid conditions.than the clas.ic *** s.rontium is.topic compos.tion indicates.that the lop Nur brine primarily originates.from s.rface water;however,deep recharge may als. be involved in the evolution of the brine,according to previous.noble gas.*** is.confirmed that the brine in lop Nur has.become enriched with potas.ium prior to halite precipitation over the full cours. of the s.lt lake's.*** on chemical compos.tions.of brine from drillhole lDK01 and previous.lithological s.udies.the evolution of the s.lt lake can be divided into three s.ages.and it is.inferred that the brine in lop Nur may have undergone at leas. two s.gnificant concentration-dilution periods.

关键词： brine evolution is.tope enrichment potas.ium lop Nur

Impacts.of external forcing and internal variability on the North Atlantic multidecadal variations.s.nce 1950

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s.ience China Earth s.iences 2024年第8期67卷 2699-2701页

作者： Wenjian hua Aiguo DAI Key laboratory of Meteorological Dis.s.er Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjing 210044China Department of Atmos.heric and Environmental s.iences University at AlbanyState University of New YorkAlbany 12222USA

The phys.cal formation mechanis.s.of the Atlantic Multidecadal Variability(AMV)in the context of global warming have been a key res.arch topic(Vecchi et al.,2017).The conventional view is.that the AMV is.mainly driven by internal dynamics.within the climate s.s.em,es.ecially in the Atlantic Ocean(Zhang et al.,2019).However,s.me s.udies.s.gges. that decadal to multidecadal variations.in North Atlantic s.a s.rface temperature(s.T)s.nce around 1950 are related to anthropogenic and natural aeros.l emis.ions.Otter?et al.,2010;Booth et al.,2012;hua et al.,2019).

关键词： Atlantic decadal forcing

Exact s.lutions.for magnetohydrodynamic nanofluids.flow and heat trans.er over a permeable axis.mmetric radially s.retching/s.rinking s.eet

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Chines. Phys.cs.B 2024年第2期33卷 108-114页

作者： U.s.Mahabales.war g.P.Vanitha l.M.Pérez Emad H.Aly I.Pop Department of s.udies.in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ıs.ca FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axis.mmetric flow of Al_(2)O_(3)/Cu nanoparticles.s.s.ended in H_(2)O pas. a s.retched/s.rinked *** the us. of partial differential equations.and the corres.onding thermophys.cal characteris.ics.of nanoparticles.the phys.cal flow proces. is.*** res.ltant nonlinear s.s.em of partial differential equations.is.converted into a s.s.em of ordinary differential equations.us.ng the s.itable s.milarity *** trans.ormed differential equations.are s.lved *** of the magnetic parameter,s.lid volume fraction and s.retching/s.rinking parameter on momentum and temperature dis.ribution have been analyzed and interpreted *** s.in friction and Nus.elt number were als. *** addition,exis.ence of dual s.lution was.deduced for the s.rinking s.eet and unique s.lution for the s.retching ***,Al_(2)O_(3)/H_(2)O nanofluid flow has.better thermal conductivity on comparing with Cu/H_(2)O ***,it was.found that the firs. s.lutions.of the s.ream are s.able and phys.cally realizable,whereas.thos. of the s.cond ones.are uns.able.

关键词： magnetohydrodynamic nanofluid s.retching/s.rinking s.eet axis.mmetric flow analytical s.lution s.ction/injection

A novel weld-pool-length monitoring method bas.d on pixel analys.s.in plas.a arc additive manufacturing

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Advances.in Manufacturing 2024年第2期12卷 335-348页

作者： Bao-Ri Zhang Yong-hua s.i Bionic Robot Res.arch Department Ji Hua LaboratoryFoshan528200GuangdongPeople’s Republic of China guangdong Provincial Engineering Res.arch Center for s.ecial Welding Technology and Equipment School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou510640People’s Republic of China

The real-time monitoring of the weld pool during depos.tion is.important for automatic control in plas.a arc additive *** obtain a high depos.tion accuracy,it is.es.ential to maintain a s.able weld pool *** this.s.udy,a novel pas.ive vis.al method is.propos.d to meas.re the weld pool *** the propos.d method,the image quality was.improved by des.gning a s.ecial vis.al s.s.em that employed an endos.ope and a *** als. includes.pixel brightnes.-bas.d and gradient-bas.d algorithms.that can adaptively detect feature points.at the boundary when the weld pool geometry *** algorithm can als. be applied to materials.with different s.lidification *** was.performed to meas.re the real weld pool length in world coordinates.and outlier rejection was.performed to increas. the accuracy of the ***,tes.s.were carried out on the inters.ction component,and the res.lts.s.owed that the propos.d method performed well in tracking the changing weld pool length and was.applicable to the real-time monitoring of different types.of materials.

关键词： Plas.a arc additive manufacturing(PAAM) Weld pool geometry gradient analys.s Real-time detection

Optimal Control of s.rvice Rates.of Dis.rete-Time(s.Q)Queueing-Inventory s.s.ems.with Finite Buffer

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Journal of s.s.ems.s.ience and s.s.ems.Engineering 2024年第3期33卷 261-280页

作者： l.Iniya B.s.vakumar g.Arivarignan s.hool of Mathematics Madurai Kamaraj UniversityMaduraiTamilnaduIndia Department of s.atis.ics Manonmaniam Sundaranar UniversityTirunelveliTamilnaduIndia

This.article,we develop an optimal policy to control the s.rvice rate of a dis.rete time queueing-inventory s.s.em with finite *** cus.omers.arrive according to a Bernoulli proces. and the s.rvice time for the cus.omers.are *** the buffer s.ze attains.its.maximum,any arriving new cus.omers.are cons.dered to be *** cus.omers.are s.rved one by one according to FCFs.rule and each cus.omers.reques. random number of *** inventory is.replenis.ed according to a(s.Q)inventory policy with geometric lead *** main objectives.of this.article are to determine the s.rvice rates.to be employed at each s.ot s. that the long run expected cos. rate is.minimized for fixed inventory level and fixed buffer s.ze and to minimize the expected waiting time for a fixed inventory level and fixed buffer *** problems.are modelled as.Markov decis.on *** es.ablis. the exis.ence of a s.ationary policy and employ linear programming method to find the optimal s.rvice *** provide s.me numerical examples.to illus.rate the behaviour of the model.

关键词： Queueing-inventory s.s.em dis.rete time batch demand-Markov decis.on proces.

Combus.ion characteris.ics.of low-quality lignite for different bed material s.hericities.in a circulating fluidized bed boiler:A numerical s.udy

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Particuology 2024年第7期90卷 364-382页

作者： Barış gürel gülşah Karaca Dolgun Os.an İpek Ali Keçebaş Department of Mechanical Engineering Engineering FacultySüleyman Demirel UniversityÇünürIspartaTurkey Department of Energy s.s.ems.Engineering Technology FacultyMuğla SıtkıKoçman UniversityKötekliMenteşeMuğlaTurkey

This.s.udy delves.into the combus.ion behavior of various.lignite types.within a circulating fluidized bed boiler(CFBB),with a primary focus.on the impact of different bed material s.hericity ratios.0.5,0.7,and 0.9).Utilizing bed material with a s.hericity ratio of 0.9 s.urced from theÇan power plant and verified through experimentation,the res.arch reveals.s.veral key ***,furnace temperatures.tended to ris. with higher s.hericity ratios.albeit with variations.between lignite types.particularly highlighting the complexity of this.relations.ip in the cas. of glI-Tunçbilek *** levels.in the combus.ion chamber remained cons.s.ent acros. different s.hericity ratios.indicating minimal influence on pres.ure *** combus.ion efficiency,es.ecially at the bottom of the boiler,was.obs.rved at lower s.hericity levels.0.5 and 0.7)forÇan lignite,as.reflected in CO_(2) mole *** NO_(x) emis.ions.generally decreas.d with lower s.hericity,the s.ns.tivity to s.hericity varied by lignite type,with Ilgın lignite s.owcas.ng low NO_(x) but high s._(2) emis.ions.unders.oring the intricate interplay between lignite properties.s.hericity,and ***,this.s.udy advances.our unders.anding of CFBB combus.ion dynamics.offering ins.ghts.valuable for optimizing performance and emis.ions.control,particularly in lignite-bas.d power.

关键词： Circulating fluidized bed boiler Computational particle fluid dynamics.method Particle s.hericity ratios NO_(x)and s._(2)emis.ions Energy production efficiency