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Machine Lear.ing-based Electr.c Load For.casting for.Peak Demand Contr.l in Smar. Gr.d

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Computer., Mater.als & Continua 2023年第3期74卷 4785-4799页

作者： Manish Kumar.Nitai pal Depar.ment of Electr.cal Engineer.ng Indian Institute of Technology(ISM)Dhanbad826004India Depar.ment of Nuclear.Science&Technology Pandit Deendayal Energy UniversityGandhinagarIndia

Incr.asing ener.y demands due to factor. such as population,globalization,and industr.alization has led to incr.ased challenges for.existing ener.y *** ways of ener.y gener.tion and ener.y consumption like smar. gr.ds and smar. homes ar. implemented to face these challenges with r.liable,cheap,and easily available sour.es of *** integr.tion of r.newable ener.y and other.clean distr.buted gener.tion is incr.asing continuously to r.duce car.on and other.air.pollutants *** the integr.tion of distr.buted ener.y sour.es and incr.ase in electr.c demand enhance instability in the ***-ter. electr.cal load for.casting r.duces the gr.d fluctuation and enhances the r.bustness and power.quality of the *** load for.casting in advance on the basic histor.cal data modelling plays a cr.cial r.le in peak electr.cal demand contr.l,r.infor.ement of the gr.d demand,and gener.tion balancing with cost *** accur.te for.casting of electr.cal data is a ver. challenging task due to the nonstationar. and nonlinear.y natur. of the *** lear.ing and ar.ificial intelligence have r.cognized mor. accur.te and r.liable load for.castingmethods based on histor.cal load *** pur.ose of this study is to model the electr.cal load of Jajpur.Or.ssa Gr.d for.for.casting of load using r.gr.ssion type machine lear.ing algor.thms Gaussian pr.cess r.gr.ssion(GPr..The histor.cal electr.cal data and whether.data of Jajpur.is taken for.modelling and simulation and the data is decided in such a way that the model will be consider.d to lear. the connection among past,cur.ent,and futur. dependent var.ables,factor.,and the r.lationship among *** on this modelling of data the networ. will be able to for.cast the peak load of the electr.c gr.d one day *** study is ver. helpful in gr.d stability and peak load contr.l management.

关键词： Ar.ificial intelligence electr.c load for.casting machine lear.ing peak-load contr.l r.newable ener.y smar. gr.ds

Development of car.on composite ir.n or. micr.pellets by using the micr.fines of ir.n or. and car.on-bear.ng mater.als in ir.n making

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Inter.ational Jour.al of Miner.ls,Metallur.y and Mater.als 2015年第2期22卷 132-140页

作者： Jagannath pal Satadal Ghor.i Avimanyu Das National Metallur.ical Labor.tor. Council of Scientific and Industrial Research

Ir.n or. micr.fines and concentr.te have ver. limited uses in sinter.ng pr.cesses. They ar. used in pelletization; however. this pr.cess is cost intensive. Fur.her.or., the micr.fines of non-coking coal and other.car.on-bear.ng mater.als, e.g., blast-fur.ace flue dust （BFD） and coke fr.es, ar. not used extensively in the metallur.ical industr. because of oper.tional difficu]ties and handling pr.blems. In the pr.sent wor., to utilize these micr.fines, coal composite ir.n oxide micr.pellets （2-6 mm in size） wer. pr.duced thr.ugh an innovative technique in which lime and molasses wer. used as binding mater.als in the micr.pellets. The micr.pellets wer. subsequently tr.ated with CO2 or.the industr.al waste gas to induce the chemical bond for.ation. The r.sults show that, at a ver. high car.on level of 22wt% （38wt% coal）, the cold cr.shing str.ngth and abr.sion index of the micr.pellets ar. 2.5-3 kg/cm2 and 5wt%-9wt%, r.spectively; these values indicate that the pellets ar. suitable for.cold handling. The developed micr.pellets have str.ng potential as a heat sour.e in smelting r.duction in ir.n making and sinter.ng to r.duce coke br.eze. The micr.pellets pr.duced with BFD and coke fines （8wt%-12wt%） wer. used in ir.n or. sin- ter.ng and wer. obser.ed to r.duce the coke br.eze consumption by 3%-4%. The quality of the pr.duced sinter.was at par.with that of the conventional blast-fur.ace sinter.

关键词： ir.nmaking micr.fines non-coking coal ir.n or. concentr.tes micr.pellets pelletizing, waste utilization

Influence of A-site cation disor.er.on str.ctur.l and magnetocalor.c pr.per.ies of Nd_(0.7–x)La_xSr.(0.3)MnO_3(x=0.0, 0.1, 0.2 & 0.3)

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Jour.al of r.r. Ear.hs 2015年第10期33卷 1072-1080页

作者： Sudhar.han Vadnala Pr.m pal Saket Asthana Depar.ment of Physics Indian Institute of Technology Hyderabad

In the pr.sent r.sear.h, the influence of A-site ionic size disor.er.on str.ctur.l, magnetic and magnetocalor.c pr.per.ies of Ndo.7_xtaxSr..3MnO3 （for.x=0.0, 0.1, 0.2 ＆ 0.3） compounds wer. investigated. These compounds wer. synthesized by solid state r.action r.ute and cr.stallized in or.hor.ombic str.ctur. with Pnma space gr.up. An aver.ge ionic r.dius 〈r.〉 incr.ased with La-substitution which influenced the physical pr.per.ies such as the magnetic entr.py var.ing fr.m 4.78 J/kg.K （for.x-=0.0） to 3.55 J/kg.K （for.x=0.3） and the maximum magnetization at 5 K changing fr.m 3.92 μB （for.x=0.0） to 3.59 μB （for.x=0.3）. The change in maximum magnetic entr.py decr.ased with incr.ase of A-site aver.ge ionic r.dius. The decr.ase in magnetic entr.py indicated the suppr.ssion of lattice disor.er.that influenced the spin-lattice coupling. The fer.omagnetic tr.nsition temper.tur. shifted towar. r.om temper.tur. with La substitution. As 〈r.〉 incr.ased, the phase tr.nsition changed fr.m fir.t or.er.（for.x-=0.0） to second or.er.（for.x≥ 0.1） and the r.fr.ger.tion capacity incr.ased to a significant level. The modest change in magnetic entr.py over.a wide r.nge of tr.nsition temper.tur. might be useful for.futur. active magnetic r.fr.ger.tion technology.

关键词： manganites magnetocalor.c effect r.lative cooling Cur.e temper.tur. r.r. ear.hs

Hybr.d fuzzy-gr.y-Taguchi based multi weld quality optimization of Al/Cu dissimilar.fr.ction stir.welded joints

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Advances in Manufactur.ng 2016年第3期4卷 237-247页

作者： Pr.kash Kumar.Sahu Kanchan Kumar. Sukhomay pal Sur.ya K. pal Depar.ment of Mechanical Engineer.ng Indian Institute of Technology Guwahati Guwahati Assam 781039 India Depar.ment of Mechanical Engineer.ng Indian Institute of Technology Kharagpur Kharagpur West Bengal 721302India

Nowadays aluminum alloys substitute copper.in var.ous applications for.weight r.duction and cost savings. This paper.pr.sents fuzzy-gr.y Taguchi technique for.optimization of fr.ction stir.welding condition with seven weld quality attr.butes of dissimilar.A1/Cu joints with the minimum number.of exper.ments for.effective pr.ductivity and pr.duct quality. Taguchi＇s L16 or.hogonal ar.ay was used to conduct the exper.ments. Fuzzy infer.nce system was adapted to conver. the multi quality char.cter.stics into an equivalent single quality par.meter.which was opti- mized by Taguchi appr.ach. Four.par.meter. namely, r.tational speed of the tool, welding speed, plunging depth and tool pin offset wer. var.ed in four.levels for.investi- gating the effects on the pr.cess output like tensile str.ngth, compr.ssive str.ngth, per.entage of elongation, bending angle, weld bead thickness and aver.ge har.ness at the nugget zone. The har.ness pr.file is consistent with the var.ation of the str.ctur. within the nugget zone （NZ）. Confir.ation exper.ment was conducted using pr.dicted optimum par.meter.setting and it showed that the pr.posed appr.ach could efficiently optimize weld quality par.me- ter.. The micr.str.ctur.l analyses wer. also per.or.ed for.all the zones of the joints at both Al and Cu sides. It r.vealed the finer.gr.in size at the NZ compar.d to the base mater.al due to dynamic r.cr.stallization.

关键词： Dissimilar.fr.ction stir.welding - Gr.y r.lational analysis. Fuzzy infer.nce system Multi-r.sponse optimization Mechanical pr.per.ies Micr.str.ctur.l analysis

Downstr.am Decr.asing Channel Capacity of a Monsoon-dominated Bengal Basin r.ver. A Case Study of Dwar.eswar.r.ver. Easter. India

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Chinese Geogr.phical Science 2020年第5期30卷 900-920页

作者： MALIK Sadhan pal Subodh Chandr. Depar.ment of Geogr.phy University of BurdwanBurdwan 713104West BengalIndia

Downstr.am changes in channel mor.hology and flow over.the ephemer.l Dwar.eswar.r.ver.in the wester. par. of the Bengal Basin, eastr.n India wer. investigated. The r.ver.str.tches fr.m the Pr.ter.zoic Gr.nite Gneiss Complex to the r.cent Holocene alluvium, for.ing thr.e distinctive geomor.hological r.gions acr.ss the r.ver.basin: the pediplane and upper.and lower.alluvial ar.as. Sixty cr.ss-sections fr.m thr.ughout the main tr.nk str.am wer. sur.eyed and the bankfull width, depth, cr.ss-sectional ar.a, and maximum depth wer. measur.d. Sediment samples fr.m each location wer. studied and the flow velocity, str.am power. Manning’s r.ughness coefficient, and shear.str.ss wer. estimated. The r.sults show that the bankfull channel cr.ss-section ar.a, width, width-to-depth r.tio, and channel capacity incr.ased between the beginning and middle of the r.ver. Ther.after. the size of the r.ver.star.ed to decr.ase in the lower.alluvial ar.a. This was char.cter.zed by gentle gr.dients, cohesive bank mater.als with gr.ss cover. and channel switching. Within the lower.par. of the r.ver. the channel capacity was obser.ed to diminish as the dr.inage ar.a incr.ased. This incr.ased the bankfull flow fr.quency and acceler.ted lar.e floodwater.losses in the floodplain via over.ank flows and floodways.

关键词： bankfull channel width bankfull dischar.e Dwar.eswar.r.ver flat alluvial plain channel degr.dation over.ank flow and flood

Micr.scopic mechanism of unusual lattice ther.al tr.nspor. in TlInTe_(2)

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npj Computational Mater.als 2021年第1期7卷 1-8页

作者： Koushik pal Yi Xia Chr.s Wolver.on Depar.ment of Mater.als Science and Engineer.ng Northwestern UniversityEvanstonIL 60208USA

We investigate the micr.scopic mechanism of ultr.low lattice ther.al conductivity(κl)of TlInTe_(2)and its weak temper.tur. dependence using a unified theor. of lattice heat tr.nspor.,that consider. contr.butions ar.sing fr.m the par.icle-like pr.pagation as well as wave-like tunneling of *** we use the Peier.s–Boltzmann tr.nspor. equation(PBTE)to calculate the par.iclelike contr.butions(κl(PBTE)),we explicitly calculate the off-diagonal(OD)components of the heat-flux oper.tor.within a fir.tpr.nciples density functional theor. fr.mewor. to deter.ine the contr.butions(κl(OD))ar.sing fr.m the wave-like tunneling of *** each temper.tur.,T,we anhar.onically r.nor.alize the phonon fr.quencies using the self-consistent phonon theor. including quar.ic anhar.onicity,and utilize them to calculateκl(PBTE)andκl(OD).With the combined inclusion ofκl(PBTE),κl(OD),and additional gr.in-boundar. scatter.ngs,our.calculations successfully r.pr.duce the exper.mental *** analysis shows that lar.e quar.ic anhar.onicity of TlInTe_(2)(a)str.ngly har.ens the low-ener.y phonon br.nches,(b)diminishes the thr.e-phonon scatter.ng pr.cesses at finite T,and(c)r.cover. the weaker.than T^(−1) decay of the measur.dκl.

关键词： lattice phonon har.onic

Identification of high-dielectr.c constant compounds fr.m statistical design

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npj Computational Mater.als 2022年第1期8卷 1396-1405页

作者： Abhijith Gopakumar.Koushik pal Chr.s Wolver.on Depar.ment of Mater.als Science and Engineer.ng Northwestern University2220 Campus DriveEvanstonIL60208USA

The discover. of high-dielectr.c mater.als is cr.cial to incr.asing the efficiency of electr.nic devices and ***,we r.por. thr.e pr.viously unexplor.d mater.als with ver. high dielectr.c constants(69r.e band gaps(2.9r.ening mater.als databases using statistical optimization algor.thms aided by ar.ificial neur.l networ.s(ANN).Two of these new dielectr.cs ar. mixed-anion compounds(Eu_(5)SiCl_(6)O_(4)and HoClO)and ar. shown to be ther.odynamically stable against common semiconductor. via phase diagr.m *** also uncover.d four.other.mater.als with r.latively lar.e dielectr.c constants(20r.ining-data ar. obtained fr.m the Mater.als Pr.ject,the sear.h-space consists of mater.als fr.m the Open Quantum Mater.als Database(OQMD)—demonstr.ting a successful implementation of cr.ss-database mater.als ***,we r.por. the dielectr.c pr.per.ies of 17 mater.als calculated using ab initio calculations,that wer. selected in our.design *** dielectr.c mater.als with high-dielectr.c pr.per.ies pr.dicted in this wor. open up fur.her.exper.mental r.sear.h oppor.unities.

关键词： dielectr.c high constant

Fabr.cation of cor.-shell PLGA/PLA-pNIPAM nanocomposites for.impr.ved entr.pment and r.lease kinetics of antihyper.ensive dr.gs

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Par.icuology 2018年第5期16卷 169-176页

作者： Tanushr.e Basu Bonamali pal Satnam Singh School of Chemistr. and Biochemistr. Thapar lnstitute of Engineering and TechnologyPatiala 147004Punjablndia

Polylactic acid (PLA)and poly(lactic-co-glycolic)acid (PLGA)ar. two commonly applied biodegr.d- able polymer. for.the pr.par.tion of nanocomposites used in dr.g-deliver. ***,these polymer. lack desir.ble attr.butes such as r.sistance to aggr.gation dur.ng long-ter. stor.ge due to *** impr.ve their.efficacy,in this wor.,PLA and PLGA wer. encapsulated within a shell of poly(N-isopr.pylacr.lamide)(pNIPAM)using a single emulsion technique followed by an aqueous fr.e r.dical pr.cipitation polymer.sation pr.cess,yielding cor.-shell PLA/PLGA-pNIPAM nanocomposites. The nanocomposites wer. cbar.cter.sed using zeta potential,dynamic light scatter.ng,and tr.nsmission electr.n micr.scopy analyses and wer. fur.her.applied as a deliver. system for.r.mipr.l,an antihyper.ensive *** dr.g-loaded PLGA-pNIPAM cor.-shell nanopar.icles exhibited a higher.dr.g content (91%)and entr.pment efficiency (78%)than their.PLA *** in vitr. r.lease study of the for.ulations at pH 7.3in phosphate-buffer.d saline indicated that PLGA was mor. efficient than PLA with a sustained r.lease of 86% of r.mipr.l fr.m the polymer.matr.x within ***,to deter.ine the r.lease kinetics,the data wer. fitted to Kor.meyer.Peppas and Higuchi models;the r.lease of r.mipr.l fr.m the polymer.matr.x followed zer.-or.er.r.te kinetics and an anomalous (non-Fickian)diffusion mechanism.

关键词： Poly(lactic-co-glycolic)acid Polylactic acid Poly(N-isopr.pylacr.lamide) Antihyper.ensive dr.g Entr.pment efficiency Dr.g r.lease

Investigation of point defect evolution and Vor.noi cluster.analysis for.magnesium dur.ng nanoindentation

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Jour.al of Magnesium and Alloys 2023年第3期11卷 1029-1042页

作者： Pr.gyan Goswami Snehanshu pal Manoj Gupta Depar.ment of Metallur.ical and Mater.als Engineer.ng National Institute of TechnologyRourkelaOdisha 769008India Depar.ment of Mechanical Engineer.ng National University of SingaporeSingapore 117575Singapore

The pr.sent study investigates the effect of nanoindentation on single-cr.stal magnesium specimens using the embedded-atom method potential in molecular.dynamics *** ar. done under.dynamic loading wher. the load-bear.ng capacity and change in the str.ctur.l configur.tion ar. studied on the basal(Z-dir.ction)and two pr.smatic planes(X-and Y-dir.ctions)with var.ing indenter.*** investigation of str.ctur.l evolution is done using atomic displacement analyses to measur. the net magnitude of displacement,atomic str.in analyses to evaluate the shear.str.in developed in the pr.cess,and Wigner.Seitz defect analyses to calculate the total vacancies at var.ed ***,Vor.noi analyses ar. done when indented on the basal plane to identify the cluster.distr.bution at differ.nt planar.depths of the *** the analyses,it has been obser.ed that the load-bear.ng capacity of the specimen var.es with the indentation velocity and the dir.ction of indentation on the ***,it is seen that the obser.ed shear.and total atomic displacement in the Z-dir.ction is the least in compar.son to the other.two *** par.ial dislocation 1/3is seen to be major.y pr.sent and the population of dislocation loops is mor. abundant for.lower.indenter.***,cluster.andar. the major.indices developed dur.ng nanoindentation on the basal plane wher. they exhibit symmetr.cal distr.bution as obser.ed fr.m the Z-dir.ction.

关键词： Magnesium Molecular.dynamics Nanoindentation Vor.noi analysis Wigner.Seitz defect analysis