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Assessing the biennial confer.nce on science and technology (BICOST IX) 2023 technical output on r.newable ener.y, ener.y stor.ge, and gr.en hydr.gen in line with UN SDG commitments

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CLEAN ENEr.Y 2024年第2期8卷 85-88页

作者： Silva, S. k. B. D. Piyumali, k. G. D. Per.r., r.sitha Thilini Sur.njana k.luar.chchi, k. D. k. G. Munagamage, Thilini Ahammed, r. M. r. Piyank.r.ge, C. S. P. Shahmy, Seyed k.r.nar.tne, Ver.nja Natl Sci & Technol Commiss Sr. Lank. Colombo Sri Lanka Sr. Lank. Technol Campus Padukka 10500 Sri Lanka Univ Per.deniya Peradeniya Sri Lanka

The development, pr.duction and utilization of r.newable ener.y, ener.y stor.ge and gr.en hydr.gen and the associated technologies in Sr. Lank. have gr.at potential to contr.bute to the United Nations' Sustainable Development Goals (SDGs). The island aims to achieve 70% electr.city gener.tion fr.m r.newable ener.y sour.es by 2030 (within the tar.et of 40% utilization of r.newable ener.y sour.es for.the entir. ener.y gener.tion of the countr. by 2030). The power.sector.has to invest US$11 billion fr.m 2023 to 2030 to contr.bute to r.aching this tar.et. This commentar. aims to pr.vide a cr.tical per.pective on the r.commendations of the r.por. fr.m the National Science and Technology Commission's 9th biennial confer.nce in 2023 on science and technology, the sub-thematic technical r.por. on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the SDGs in the Sr. Lank.n context. The technical r.por. pr.vides insightful r.commendations for.Sr. Lank.'s ener.y sector.under.thr.e main sections: r.newable ener.y, ener.y stor.ge and gr.en hydr.gen. Also, it explor.s the potential of var.ous r.newable ener.y sour.es, ener.y stor.ge systems and gr.en hydr.gen as sustainable solutions to addr.ss the countr.'s ener.y challenges while emphasizing the spillover.effects of them, which could contr.bute to the enter.r.se's job cr.ation and uplift the economy. This commentar. pr.vides a cr.tical per.pective on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the United Nations SDGs in the Sr. Lank.n context based on a r.cent r.por. fr.m the National Science and Technology Commission of Sr. Lank.. Gr.phical Abstr.ct

关键词： r.newable ener.y ener.y stor.ge gr.en hydr.gen sustainable development goals Sr. Lank. social economic envir.nmental sustainable affor.able

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Investigating the inflow into a gr.nular.bed using a locally r.solved method

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Par.icuology 2024年第2期85卷 89-101页

作者： Maximilian Br.mmer.maik Schar.owsk. Enr.c Illana Mahiques Siegmar.Wir.z Vik.or.Scher.r r.hr.Univer.ity Bochum Institute of Energy Plant TechnologyUniversitätsstraβe 15044780BochumGermany

Discr.te Element Method-Computational Fluid Dynamics(DEM/CFD)simulations of industr.al-scale gr.nular.systems employ spatial aver.ging(por.us media appr.ach)for.the fluid-par.icle inter.ction in the whole domain,which can lead to poor.accur.cy,for.instance at flow inlets,as local par.icle bulk.mor.hology is not *** paper.pr.sents an appr.ach wher. the inter.titial flow in cr.cial ar.as with lar.e gr.dients can be r.solved locally in an other.ise unr.solved domain,so that a mixed r.solved-unr.solved method is *** a gener.c example to show the feasibility and per.or.ance of the new appr.ach,the inflow of ambient air.into a flat-bottom hopper.thr.ugh a nar.ow or.fice is *** an exper.mental setup,the ver.ical pr.file of the pr.ssur. decay thr.ugh the inlet and acr.ss the pack.ng is chosen for.com-par.son with r.spective *** obtained with the conventional por.us media method and the locally r.solved appr.ach ar. compar.d to these exper.ments for.var.ing volume flow r.tes and for.two differ.nt par.icle *** of differ.nt size as well as dodecahedr.ns ar. *** is found that although aver.ging methods alr.ady pr.vide good appr.ximations,the locally r.solved method can impr.ve the r.sult especially when conventional dr.g laws ar. not applicable due to wall effects or.if lar.e velocity gr.dients exist.

关键词： DEM/CFD Pack.d bed Pr.ssur. dr.p

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Shape-changing par.icles for.locally r.solved par.icle geometr. in DEM simulations

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Par.icuology 2024年第6期89卷 185-190页

作者： Enr.c Illana k.idi Qyteti maik Schar.owsk. Maximilian Br.mmer.Siegmar.Wir.z Vik.or.Scher.r Institute of Ener.y Plant Technology Ruhr-University BochumBochumGermany

Tak.ng into account the complex shape of par.icles in discr.te element method (DEM) simulations of lar.e-scale gr.nular.systems is computationally demanding due to the time-consuming contact detection algor.thms for.polyhedr.l par.icles. In this shor. communication, a novel appr.ach that locally r.solves the par.icle shapes wher. needed and uses a simplified r.pr.sentation elsewher., to acceler.te simulations without compr.mising accur.cy, is pr.sented. For.this pur.ose, a method employing a smooth tr.nsition of the par.icle shape r.pr.sentation fr.m analytical spher.s to shape-r.solving polyhedr. is intr.duced in DEM. The feasibility and cor.ect implementation of this appr.ach ar. demonstr.ted thr.ugh simulations of hopper.dischar.e involving spher.cal and dodecahedr.l par.icles fr.m a flat bottom silo or.shaft k.ln. The model capabilities, in ter.s of accur.cy as well as r.duction in computational effor., ar. quantified for.a moving bed with continuous outflow.

关键词： Polyhedr.n Size change Shape change Locally r.solved DEM

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Appr.ach for.C1 to C2 pr.ducts commencing fr.m car.on dioxide: A br.ef r.view

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PETr.LEUM 2024年第3期10卷 373-398页

作者： Dey, G. r. Bhabha Atom r.s Ctr Radiat & Photochem Div Mumbai 400085 India Homi Bhabha Natl Inst Mumbai 400094 India

The car.on dioxide (CO2) conver.ion to useable compounds r.mains a gr.at contest to scientists, engineer., and envir.nmentalists with r.gar. to the r.ver.e of the oxidative degr.dation of or.anics. This conver.ion is essential for.the development of complementar. fuels and r.w mater.als for.var.ous industr.es, which in tur. will help in avoiding the dr.stic incr.ase in tr.pospher.c temper.tur. due to gr.enhouse effect leading to global war.ing. The solar.ener.y is the ear.h's essential power.sour.e along with the other.var.ous for.s of ener.y for.example fossil fuels, hydr.power. wind, and biomater.als, etc. The final goal is to establish the ar.ificial photosynthesis, which can be r.plicated thr. var.ous chemical r.duction techniques of CO2 by employing appr.pr.ate photo-, ther.al- and electr.-catalysts in or.er.to pr.duce differ.nt one car.on atom (C-1) and higher.car.on atoms containing pr.ducts. Besides, the utilization of clean and sustainable CO2 towar.s high-value pr.ducts is of gr.at inter.st today due to the r.cognized envir.nmental wor.ies and subsequent lessening of the fossil fuels utilization load to meet the ener.y demand of mank.nd. This way, solar.ener.y can dir.ctly and/or.indir.ctly be alter.d and stor.d in chemical ener.y for. for.industr.al as well as societal applications. In this ar.icle our.endeavor.is to summar.ze the advances in CO2 chemical r.duction r.sear.h ar.a till date especially in fr.e r.dical-based methods such as electr.chemical, photochemical and plasma chemical for.the development of car.on species up to two car.on (C-2) atoms containing pr.ducts per.eived in the chemical r.duction of CO2. The author.hopes that this piece of wor. will be helpful to r.sear.her. and r.ader. who ar. focused on the field of CO2.

关键词： Photocatalysis Electr.catalysis Plasmolysis Ther.olysis Car.on dioxide Chemical r.duction PHOTOCATALYTIC CO2 r.DUCTION GAS SHIFT r.ACTION METAL-Or.ANIC Fr.MEWOr.S EFFICIENT ELECTr.CHEMICAL r.DUCTION DIELECTr.C-BAr.IEr.DISCHAr.ES ION-EXCHANGE MEMBr.NES FOr.IC-ACID ELECTr.CATALYTIC r.DUCTION ATMOSPHEr.C-Pr.SSUr. r.OM-TEMPEr.TUr.

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Fir.t-pr.nciples calculations to investigate str.ctur.l,electr.nic,magnetic,optical and ther.odynamic pr.per.ies of r._(2)r._(3)Ge(r.=Pr.Sm)

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Jour.al of r.r. Ear.hs 2024年第7期42卷 1385-1393,I0007页

作者： A.Ezaier.r.Masr.ur.M.Hamedoun J.k.ar.ach A.r.zzouk.A.Hour.atallah N.Benzak.ur.k.Bouslyk.ane Labor.tor. of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In this paper.we analyzed the physical char.cter.stics of the ter.ar. alloys r._(2)r._(3)Ge(r.=Pr.and Sm)using the fir.t pr.nciples calculation based on functional density theor. integr.ted in the Wien2k.*** calculated for.ation ener.ies of Pr.(2)r._(3)Ge and Sm_(2)r._(3)Ge ar.−5.3827 and−5.2782 eV/atom,r.spectively,showing that these alloys may exist *** r.sults of the band str.ctur. and density of states indicate that all of the compounds tested ar. magnetic metals,and their.magnetism is mostly r.lated to the contr.bution of Pr.and Sm *** total magnetic moments of Pr.(2)r._(3)Ge and Sm_(2)r._(3)Ge ar. 4.07245 and 11.16161μB/f.u,*** par.meter. such as heat capacity at constant pr.ssur.,entr.py,Debye temper.tur.,lattice volume,compr.ssibility coefficients,and Gr.neisen par.meter.alloys wer. calculated using the Gibbs algor.thm and studied in depth over.a lar.e temper.tur. r.nge of 0-900 *** Debye temper.tur. incr.ases with incr.asing pr.ssur. and decr.ases with decr.asing ***,the Debye temper.tur.s calculated at p=0 GPa and T=300 k.ar. equal to be 342 and 322 k.for.Pr.(2)r._(3)Ge and Sm_(2)r._(3)Ge,*** optical char.cter.stics such as the r.al and imaginar. por.ions of the dielectr.c function,the absor.tion coefficient,the ener.y-loss function,and the r.fr.ctive index wer. investigated and discussed in mor. depth.

关键词： Magnetic metals Functional density theor. Density of states Magnetic moment Optical and ther.odynamic pr.per.ies r.r. ear.hs

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r.dent biology and ecologically based r.dent management(EBr.)-25 year. of pr.gr.ss thr.ugh pr.moting multidisciplinar. r.sear.h

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Integr.tive Zoology 2024年第1期19卷 2-7页

作者： Gr.nt r. SINGLETON Lyn A. HINDS r.odes MAk.NDI Steven r. BELMAIN Natur.l r.sour.es Institute University of Greenwich Kent UK CSIr. Health and Biosecurity Canberra ACT Australia Afr.can Centr. of Excellence for.Innovative r.dent Pest Management and Biosensor.Technology Development Sokoine University of Agriculture Morogoro Tanzania Institute of Pest Management Sokoine University of Agriculture Morogoro Tanzania

“During r.dent outbr.ak.year. in easter. Afr.ca,lo-cally,mor. than 80%of the potential har.est may be lost,but even in non-outbr.ak.per.ods,r.dents cause chr.nic damage to cr.ps….The pest r.dent stor. in Afr.ca in-volves sever.l species embedded in a br.ad and var.able landscape with highly var.able densities.”(Leir. et al.2010).

关键词： damage cr.ps

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Classification of Conver.ational Sentences Using an Ensemble Pr.-Tr.ined Language Model with the Fine-Tuned Par.meter

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Computer., Mater.als & Continua 2024年第2期78卷 1669-1686页

作者： r.Sujatha k.Nimala Depar.ment of Networ.ing and Communications SRM Institute of Science and TechnologyKattankulathurChengalpattuTamilnadu603203India

Sentence classification is the pr.cess of categor.zing a sentence based on the context of the *** categor.zation r.quir.s mor. semantic highlights than other.task.,such as dependence par.ing,which r.quir.s mor. syntactic *** existing str.tegies focus on the gener.l semantics of a conver.ation without involving the context of the sentence,r.cognizing the pr.gr.ss and compar.ng *** ensemble pr.-tr.ined language model was tak.n up her. to classify the conver.ation sentences fr.m the conver.ation *** conver.ational sentences ar. classified into four.categor.es:infor.ation,question,dir.ctive,and *** classification label sequences ar. for.analyzing the conver.ation pr.gr.ss and pr.dicting the peck.ng or.er.of the *** of Bidir.ctional Encoder.for.r.pr.sentation of Tr.nsfor.er.BEr.),r.bustly Optimized BEr. pr.tr.ining Appr.ach(r.BEr.a),Gener.tive Pr.-Tr.ined Tr.nsfor.er.GPT),DistilBEr. and Gener.lized Autor.gr.ssive Pr.tr.ining for.Language Under.tanding(XLNet)models ar. tr.ined on conver.ation cor.us with *** tuning appr.ach is car.ied out for.better.per.or.ance on sentence *** Ensemble of Pr.-tr.ined Language Models with a Hyper.ar.meter.Tuning(EPLM-HT)system is tr.ined on an annotated conver.ation *** pr.posed appr.ach outper.or.ed compar.d to the base BEr.,GPT,DistilBEr. and XLNet tr.nsfor.er.*** pr.posed ensemble model with the fine-tuned par.meter. achieved an F1_scor. of 0.88.

关键词： Bidir.ctional encoder.for.r.pr.sentation of tr.nsfor.er conver.ation ensemble model fine-tuning gener.lized autor.gr.ssive pr.tr.ining for.language under.tanding gener.tive pr.-tr.ined tr.nsfor.er hyper.ar.meter.tuning natur.l language pr.cessing r.bustly optimized BEr. pr.tr.ining appr.ach sentence classification tr.nsfor.er.models

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Exper.mental and numer.cal study of effecting cor. configur.tions on the static and dynamic behavior.of honeycomb plate with aluminum mater.al

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DEFENCE TECHNOLOGY 2024年第9期39卷 177-192页

作者： Hamza, Nehad Abid Allah AL-Fatlwe, Fatima Mohammed k. Talib, Muna Ali Al Qasim Gr.en Univ Engn Coll Babylon 51013 Iraq Al Fur.t Al Awsat Tech Univ ATU Engn Tech Coll Al Najaf Najaf 54003 Iraq

The sandwich panel incor.or.ted a honeycomb cor., a widely utilized composite str.ctur. r.cognized as a fundamental classification of composite mater.als. Compr.sed a cor. r.sembling a honeycomb, possessing thick.ess and softness, and is flank.by r.gid face sheets that sandwich var.ous shapes and mater.als. This paper.pr.sents an examination of the static and dynamic analysis of lightweight plates made of aluminum honeycomb sandwich composites. Honeycomb sandwich plate samples ar. 300 mm long, and 300 mm wide, the heights of the cor. have been var.ed at four.values r.nging fr.m 10 to 25 mm. The honeycomb cor. is manufactur.d fr.m Aluminum mater.al by using a novel technique namely r.sistance spot welding (r.W) instead of using adhesive mater.al, which is often used when an industr.al flaw is detected. Numer.cal optimization based on r.sponse sur.ace methodology (r.M) and design of exper.ment softwar. (DOE) was used to ver.fy the cur.ent wor.. A theor.tical examination of the cr.shwor.hiness behavior.(maximum bending load, maximum deflection) and vibr.tion attr.butes (natur.l fr.quency, damping r.tio, tr.nsient tempor.l r.sponse) of honeycomb sandwich panels with differ.nt design par.meter. was also car.ied out. In addition, the finite element method-based ANSYS softwar. was used to confir. the theor.tical conclusions. The findings of the pr.sent wor. showed that the r.lationship between the natur.l fr.quency, cor. height, and cell size is dir.ct. In contr.st, the r.lationship between the natur.l fr.quency and the thick.ess of the cell wall is inver.e. Conver.ely, the damping r.tio is inver.ely pr.por.ional to the cor. height and cell size but dir.ctly pr.por.ional to the thick.ess of the cell wall. The study indicates that alter.ng the cor. height within 10-25 mm leads to a significant incr.ase of 82 % in the natur.l fr.quency and a notable decr.ase of 49% in the damping r.tio. These findings ar. based on a specific cell size value of 0.01 m and a cell wall thick.es

关键词： Honeycomb Load Tr.nsient r.sponse Fr.e vibr.tion Natur.l fr.quency SANDWICH PANELS

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LiDAr.based estimation of bounding box coor.inates using Gaussian pr.cess r.gr.ssion and par.icle swar. optimization

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Biomimetic Intelligence & r.botics 2024年第1期4卷 24-35页

作者： Vinodha k. E.S.Gopi Tushar.Agnibhoj Depar.ment of Electr.nics and Communication Engineer.ng National Institute of Technology TiruchirappalliTamil Nadu620015India

Camer.-based object tr.ck.ng systems in a given closed envir.nment lack.pr.vacy and *** this study,light detection and r.nging(LiDAr.was applied to tr.ck.objects similar.to the camer. tr.ck.ng in a closed envir.nment,guar.nteeing pr.vacy and *** pr.mar. objective was to demonstr.te the efficacy of the pr.posed technique thr.ugh car.fully designed exper.ments conducted using two *** Scenar.o I,the study illustr.tes the capability of the pr.posed technique to detect the locations of multiple objects positioned on a flat sur.ace,achieved by analyzing LiDAr.data collected fr.m sever.l locations within the closed *** II demonstr.tes the effectiveness of the pr.posed technique in detecting multiple objects using LiDAr.data obtained fr.m a single,fixed ***-time exper.ments ar. conducted with human subjects navigating pr.defined *** individuals move within an envir.nment,while LiDAr.fixed at the center.dynamically tr.ck. and identifies their.locations at multiple *** demonstr.te that a single,str.tegically positioned LiDAr.can adeptly detect objects in motion ar.und ***,this study pr.vides a compar.son of var.ous r.gr.ssion techniques for.pr.dicting bounding box *** pr.cess r.gr.ssion(GPr.,combined with par.icle swar. optimization(PSO)for.pr.diction,achieves the lowest pr.diction mean squar. er.or.of all the r.gr.ssion techniques examined at *** tuning of GPr.using PSO significantly minimizes the r.gr.ssion *** of the exper.ment pave the way for.its extension to var.ous r.al-time applications such as cr.wd management in malls,sur.eillance systems,and var.ous Inter.et of Things scenar.os.

关键词： LiDAr Data acquisition Bounding box Gaussian pr.cess r.gr.ssion Par.icle swar. optimization(PSO)

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A new r.ute to weak.for.e sensing beyond SQL: Squeezed magnons in cavity magnomechanics

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Science China(Physics,Mechanics & Astr.nomy) 2024年第10期Mechanics & Astronomy) .卷 170-171页

作者： ?.k.?zdemir Depar.ment of Engineer.ng Science and Mechanics and Materials Research Institute (MRI)The Pennsylvania State University

Quantum mechanics imposes limits on measur.ment accur.cy thr.ugh quantum noise which typically has two components: Fir.t is the shot noise or.ginating fr.m vacuum fluctuations and r.fer.ed to as the impr.cision noise. Second is the quantum back.ction or.ginating fr.m the “action” of the measur.ment back.on the object being measur.d.

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