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A compr.hens.ve inves.igation on nonlinear.vibr.tion and bending char.cter.s.ics.of bio-ins.ir.d helicoidal laminated compos.te s.r.ctur.s

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Applied Mathematics.and Mechanics.Englis. Edition) 2025年第1期46卷 81-100页

作者： s.s.Ur.BH r.KIr.N D.s.NGH r.VAIs. V.s.chauhan s.hool of Mechanical and Mater.als.Engineer.ng Indian Institute of Technology Mandi

Bio-ins.ir.d helicoidal compos.te laminates. ins.ir.d by the intr.cate helical s.r.ctur.s.found in natur., pr.s.nt a pr.mis.ng fr.ntier.for.enhancing the mechanical pr.per.ies.of s.r.ctur.l des.gns. Hence, this.s.udy pr.vides.a compr.hens.ve inves.igation into the nonlinear.fr.e vibr.tion and nonlinear.bending behavior.of bio-ins.ir.d compos.te plates. The inver.e hyper.olic s.ear.defor.ation theor.(IHs.T) of plates.is.employed to char.cter.ze the dis.lacement field, with the incor.or.tion of Gr.en-Lagr.nge nonlinear.ty. The pr.blem is.modeled us.ng the C0finite element method(FEM), and an in-hous. code is.developed in the MATLAB envir.nment to s.lve it numer.cally. Var.ous.helicoidal layup configur.tions.including helicoidal r.cur.ive(Hr., helicoidal exponential(HE), helicoidal s.mi-cir.ular.Hs., linear.helicoidal(LH), and Fibonacci helicoidal(FH)with differ.nt layup s.quences.and quas.-is.tr.pic configur.tions.ar. s.udied. The model is.validated, and par.metr.c s.udies.ar. conducted. Thes. s.udies.inves.igate the effects.of layup configur.tions. s.de-to-thicknes. r.tio, modulus.r.tios. boundar. conditions. and loading conditions.at differ.nt load amplitudes.on the nonlinear.vibr.tion and nonlinear.bending behavior. of bio-ins.ir.d compos.te plates. The r.s.lts.s.ow that the laminate s.quence exer.s.a s.bs.antial impact on both nonlinear.natur.l fr.quencies.and nonlinear.bending behavior.. Mor.over. this.influence var.es.acr.s. differ.nt s.de-to-thicknes. r.tios.and boundar. conditions.of the bio-ins.ir.d compos.te plate.

关键词： finite element method (FEM) nonlinear Gr.en-Lagr.nge inver.e hyper.olic s.ear.defor.ation theor. (IHs.T) bio-ins.ir.d compos.te plate helicoidal O322

Des.gn of computer.vis.on as.is.ed machine lear.ing bas.d contr.ller.for.the s.ewar. platfor. to tr.ck s.atial objects

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Fr.ntier. of s.r.ctur.l and Civil Engineer.ng 2024年第8期18卷 1195-1208页

作者： Dev Kunwar.s.ngh chauhan Pandu r.VUNDAVILLI Indian Ins.itute of Technology Bhubanes.ar Bhubaneswar 752050India

The pr.s.nt wor. aims.to develop an object tr.cking contr.ller.for.the s.ewar. platfor. us.ng a computer.vis.on-as.is.ed machine lear.ing-bas.d *** r.s.ar.h is.divided into two *** fir.t module focus.s.on the des.gn of a motion contr.ller.for.the Phys.k Ins.r.mente(PI)-bas.d s.ewar. *** contr.s.,the s.cond module deals.with the development of a machine-lear.ing-bas.d s.atial object tr.cking algor.thm by collecting infor.ation fr.m the Zed 2 s.er.o vis.on ***,s.mple feed-for.ar. neur.l networ.s.NN)ar. us.d to pr.dict the or.entation of the top table of the *** tr.ining,the x,y,and z coor.inates.of the thr.e-dimens.onal(3D)object,extr.cted fr.m images.ar. us.d as.the input to the *** contr.s.,the or.entation infor.ation of the platfor.(that is.r.tation about the x,y,and z-axes.is.cons.der.d as.the output fr.m the *** or.entation infor.ation obtained fr.m the networ. is.fed to the inver.e kinematics.bas.d motion contr.ller.module 1)to move the platfor. while tr.cking the *** tr.ining,the optimis.d NN is.us.d to tr.ck the continuous.y moving 3D *** exper.mental r.s.lts.s.ow that the developed NN-bas.d contr.ller.has.s.cces.fully tr.cked the moving s.atial object with r.as.nably good accur.cy.

关键词： s.ewar. platfor. feed-for.ar. neur.l networ.s motion contr.ller inver.e kinematics s.er.o vis.on

Biomas. and Car.on s.ques.r.tion Potential of Poplar.Wheat Inter.cr.pping s.s.em in Ir.igated Agr.-ecos.s.em in India

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Jour.al of Agr.cultur.l s.ience and Technology(A) 2011年第4X期1卷 575-586页

作者： s. K. chauhan N. Gupta r. Walia s. Yadav r. chauhan P. s. Mangat Depar.ment of For.s.r. and Natur.l r.s.ur.es Punjab Agricultural University Ludhiana 141 004 lndia Depar.ment of s.ils Punjab Agricultural University Ludhiana 141 004 India

An attempt has.been made to as.es. the pr.ductivity as.well as.the car.on s.ques.r.tion potential of this.mixtur.. The gr.in as.well as.s.r.w yields.wer. s.gnificantly lower.in poplar.block plantations.than in the open （14 to 64% and 13 to 66% gr.in and s.r.w yield, r.s.ectively under.one to s.x year.plantation）. The annual pr.ductivity of poplar. was.r.cor.ed maximum after.four.h year.and later.the annual wood incr.ment decr.as.d （42.4, 39.8 and 35.6 m^3/ha/yr.after.4^th, 5^th and 6^th year. r.s.ectively）. The enr.chment of s.il thr.ugh litter.and r.ots.enhanced the or.anic car.on in the s.r.ace layer.of s.il （0-15 cm） under.poplar.blocks.as.compar.d to open fields.with wheat cr.p only. The car.on s.or.ge potential in agr.for.s.r. s.s.em was.r.cor.ed ver. high in compar.s.n to s.le cr.p. The car.on s.or.ge in agr.for.s.r. s.s.em incr.as.d with the age of the plantation and the major.contr.bution came fr.m the timber. r.ots.and litter.（37.30 mg/ha after.s.x year.）. However. wheat cr.p yield decr.as.d under.poplar.but this.may be compens.ted by the poplar.tr.es.in ter.s.of biomas., economic r.tur.s.and the car.on s.ques.r.tion potential.

关键词： Agr.for.s.r. car.on dis.r.bution poplar s.s.em pr.ductivity wheat.

Dis.r.bution patter. and cons.r.ation of thr.atened medicinal and ar.matic plants.of Centr.l Himalaya, India

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Jour.al of For.s.r. r.s.ar.h 2011年第3期22卷 403-408页

作者： L. s. Kandar. K.s. r.o r. K. Maikhur. G. Khar.wal K. chauhan C.P. Kala r.s.ar.h Centr. for.Plant Gr.wth & Development School of Biological & Conservation Sciences Private Bag X01 Scottsville 3209 University of KwaZulu-Natal Pietermaritzburg South Africa Depar.ment of Botany University of Delhi Delhi-110007 India G.B. Pant Ins.itute of Himalayan Envir.nment and Development Srinagar Garhwal 246174 Uttarakhand India Gr.duate s.hool of Envir.nmental Ear.h s.ience Hokkaido University Sapporo 060-0810 Japan Indian Ins.itute of For.s. Management P.O. Box 357 Nehru Nagar Bhopal- 462003 M.P. India

A s.udy was.conducted to examine the dis.r.bution patter. of four.r.izomatous.medicinal and ar.matic plant s.ecies.（MAPs. viz., Angelica glauca, Pleur.s.er.um angelicoides. r.eum emodi and Ar.e- bia benthamii in differ.nt for.s. s.ands.in Centr.l Himalaya. r.s.lts.s.ow that A. glauca and P. angelicoides.had a higher.（50%） fr.quency at Chipkoan, Gar.ak and Phagati for.s., r. emodi had a higher.（60%） fr.quency at r.s.ikund, s.ki and Himtoli, and A. benthamii had a higher.（70%） fr.quency at s.ki and Khambdhar.The dens.ties.of A. glauca （0.6 plants.m -2 ） and P. angelicoides.（0.5 plants.m -2 ） wer. higher.at Chipkoan and Gar.ak s.tes.than at other.micr.-s.tes. while dens.ties.of r. emodi （0.8 plants.m -2 ） and A. benthamii （1.0 plants.m -2 ） wer. higher.at s.ki and Khambdhar.s.tes. A. glauca had highes. total bas.l cover. （TBC）（1.2 cm 2 ·m -2 ） at Chipkoan, P. angelicoides.had highes. TBC （0.92 cm 2 ·m -2） at Lati khar.k s.te, A. benthamii had the highes. TBC （6.48 cm 2 ·m -2 ） atKhambdhar. and r. emodi had highes. TBC （4.53 cm 2 ·m -2 ） at r.s.ikund. For.the four.s.udied s.ecies. A. glauca s.owed a contagious.dis.r.bution, P. angelicoides.and r. emodi s.owed the r.ndom and A. benthamii s.owed the r.gular.type of dis.r.bution.

关键词： alpine ecos.s.em Himalaya medicinal and ar.matic plants tr.ditional knowledge Uttar.khand

Genetic diver.ity and r.lations.ip between cultivated clones.of Dalber. gia s.s.oo of wide geogr.phical or.gin us.ng r.PD mar.er.

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Jour.al of For.s.r. r.s.ar.h 2011年第4期22卷 507-517页

作者： H. s. Ginwal s.alini s.ngh Maur.a Pr.ti chauhan Divis.on of Genetics.and Tr.e Pr.pagation Forest Research Institute P.O. I.P.E Kaulagarh Road Dehradun 248195 (Uttarakhand) India

r.ndom Amplified Polymor.hic DNA （r.PD） polymor. phis. was.employed to as.es. the genetic diver.ity in the elite ger.plas.＇of Dalber.ia s.s.oo. s.xty-s.ven clones.that ar. under.cultivation in nor.her. India, or.ginated fr.r.i s.x differ.nt s.ates.of India and Nepal wer. analyzed with 30 r.PD pr.mer. that gener.ted a total of 342 fr.gments.out of which 290 wer. polymor.hic. Total genetic diver.ity （Ht） var.ed between 0.01 and 0.37, with an aver.ge of 0.19. s.annon＇s.Infor.ation index （I） var.ed between 0102 and 0.54, with an aver.ge of 0.31. Mar.er.attr.butes.like Polymor.his. Infor.ation Content （PIC）, Mar.er.Index （MI） and Effective Multiplex r.tio （EMr. values.wer. calculated to as.es. the dis.r.minator. power.of 30 pr.mer. us.d. The PIC values.r.nged fr.m 0.01 to 0.37 with an aver.ge of 0.17 per.pr.mer.and the EMr.r.nged fr.m 0.17 to 21.00 with a mean of 8.66 acr.s. all genotypes. Clos.ly r.lated clones.wer. C49 and C51 with s.milar.ty index of 0.86 while the leas. s.milar.or.mos. dis.imilar.clones.wer. C14 and s.DB s.owing s.milar.ty index of 0.58. The UPGMA-phenogr.m categor.zed the 67 clones.into s.x clus.er. bas.d on genetic s.milar.ty and dis.imilar.ty. The clus.er.ng of clones.in r.lation to their.geogr.phical location has.been dis.us.ed.

关键词： clones Dalber.ia s.s.oo genetic diver.ity polymor.hic r.PD

Temper.tur.-dependent aggr.gation of bio-s.r.actants.in aqueous.s.lutions.of galactos. and lactos.:Volumetr.c and vis.ometr.c appr.ach

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Chines. Jour.al of Chemical Engineer.ng 2018年第5期26卷 1119-1131页

作者： s.chauhan Vivek s.ar.a Maninder.Kaur.Poonam Chaudhar. Depar.ment of chemis.r. Himachal Pradesh University

Modulation in the aggr.gation behavior.of bio-s.r.actants.（bile s.lts., s.dium cholate （NaC） and s.dium deoxycholate （NaDC） in aqueous.s.lutions.of car.ohydr.tes.（galactos. and lactos.） have been inves.igated by meas.r.ng the dens.ty （ρ）, s.eed of s.und （u） and vis.os.ty （η） of the mixtur.s.at differ.nt temper.tur.s.293.15, 298.15, 303.15, 308.15 and 313.15 K. The dens.ty and s.eed of s.und data have been us.d to calculate var.ous.volumetr.c and compr.s.ibility par.meter. s.ch as.appar.nt molar.volume （Vφ）, is.ntr.pic compr.s.ibil- ity （κs., appar.nt molar.adiabatic compr.s.ion （κs.φ） to get a better.ins.ght into the micellization mechanis. of bile s.lts. Fur.her. the vis.os.ty data have been s.udied in the light of r.lative vis.os.ty （ηr. and vis.ous.r.laxation time （τ）. s.me der.ved par.meter. s.ch as.fr.e volume （νf）, inter.al pr.s.ur. （πi） and molar.cohes.ve ener.y （MCE） of NaC and NaDC in aqueous.s.lution of s.cchar.des.have als. been calculated fr.m vis.os.ty data in con- junction with dens.ty and s.eed of s.und values. All the calculated and der.ved par.meter. pr.vide qualitative infor.ation r.gar.ing the natur. of inter.ctions.i.e. s.lute-s.lute, s.lute-s.lvent and s.lvent-s.lvent in the s.lution.

关键词： Dens.ty s.eed of s.und Appar.nt molar.volumels.ntr.pic compr.s.ibility Vis.os.ty r.lative vis.os.ty

Pr.par.tion, char.cter.zation and lumines.ence behavior.of s.me s.mar.um complexes

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r.r. Metals 2021年第9期40卷 2618-2626页

作者： Ar.hana chauhan r.tu Langyan Depar.ment of Chemis.r. Kurukshetra UniversityKurukshetra 136119India

The s.nthes.s.of lumines.ent complexes.of s.(III) with the gener.l for.ula [s.(L)_(3)·(X)] was.done in powder.for.. In the for.ula, L is.6-methyl-4-oxo-4 H-1-benzopyr.n-3-car.oxaldehyde and X r.pr.s.nts.2H_(2)O(C1), 1,10-phenanthr.line(C2), 2,20-bipyr.dine(C3);bathophenanthr.line(C4) and neocupr.ine(C5). The complexes.wer. char.cter.zed by us.ng var.ous.analytical and s.ectr.s.opic tools.like elemental analys.s. electr.s.r.y ionization mas. s.ectr.metr.(Es.–Ms.), Four.er.tr.ns.or. infr.r.d s.ectr.s.opy(FTIr., ultr.violet–vis.ble(UV–Vis. s.ectr.s.opy, ther.o-gr.vimetr.c analys.s.differ.ntial ther.al gr.vimetr.c analys.s.TGA/DTG), field emis.ion s.anning electr.n micr.s.opy(FEs.M), powder.X-r.y diffr.ction(Xr.), and photolumines.ence(PL)s.udies. TGA/DTG s.owed high ther.al s.ability of s.nthes.zed complexes. Powder.Xr. depicts.that the aver.ge par.icle s.ze lies.in the nano-r.nge. On monitor.ng at the excitation wavelength of 370 nm, the complexes.dis.lay char.cter.s.ic lumines.ence peaks.of s.(III) at ~564,~600 and ~647 nm as.igned to^(4)G_(5/2)→^(6)H_(5/2),^(4)G_(5/2)→^(6)H_(7/2), and ^(4)G_(5/2)→6H9/2 tr.ns.tions. r.s.ectively, with the mos. intens. tr.ns.tion at ~600(or.nge emis.ion) and~647 nm(br.ght r.d emis.ion) in liquid and powder.s.ate, r.s.ectively. The inves.igations.demons.r.te that the s.nthes.zed novel complexes.might be pr.ctically us.ful in electr.lumines.ent devices. bio-as.ays. and liquid las.r. due to their.attr.ctive photolumines.ent pr.per.ies.

关键词： s.mar.um complexes Lumines.ence Ther.al analys.s Quantum yield

Implementation of dr.ne technology for.far. monitor.ng&pes.icide s.r.ying:A r.view

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Infor.ation Pr.ces.ing in Agr.cultur. 2023年第2期10卷 192-203页

作者： Abdul Hafeez Mohammed As.am Hus.in s.P.s.ngh Anur.g chauhan Mohd.Taus.ef Khan Navneet Kumar.Abhis.ek chauhan s.K.s.ni r.jkiya Engineer.ng College Ambedkar NagarUP 224122India r.jkiya Engineer.ng College BandaUP 210201India r.jkiya Engineer.ng College BijnorUP 246725India MMMUT GorakhpurUP 273016India

The wor.d r.ceives.mor. than 200 thous.nd people in a day and it is.expected that the total wor.d population will r.ach 9.6 billion by the year.*** will r.s.lt in extr. food demand,which can only be met fr.m enhanced cr.p ***,moder.ization of the agr.cultur.l s.ctor.becomes.the need of the *** ar. many cons.r.ints.that ar. r.s.ons.ble for.the low pr.duction of cr.ps.which can be over.ome by us.ng dr.ne technology in the agr.cultur. *** paper.pr.s.nts.an analys.s.of dr.ne technologies.and their.modifications.with time in the agr.cultur. s.ctor.in the las. *** application of dr.nes.in the ar.a of cr.p monitor.ng,and pes.icide s.r.ying for.Pr.cis.on Agr.cultur.(PA)has.been *** wor. done r.lated to dr.ne s.r.ctur.,multiple s.ns.r.development,innovation in s.ot ar.a s.r.ying has.been ***,the us. of Ar.ificial Intelligent(AI)and deep lear.ing for.the r.mote monitor.ng of cr.ps.has.been dis.us.ed.

关键词： Unmanned Aer.al Vehicle Agr.cultur. dr.ne Pes.icide s.r.ying Cr.p monitor.ng Pr.cis.on agr.cultur.

Machinability s.udy of Titanium (Gr.de-5) Alloy Us.ng Des.gn of Exper.ment Technique

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Engineer.ng（科研） 2011年第6期3卷 609-621页

作者： Kali Das. s. r.chauhan 不详

This.paper.pr.s.nts.the findings.of an exper.mental inves.igation into the effects.of cutting s.eed, feed r.te, depth of cut and appr.ach angle in tur.ing of titanium (Gr.de 5) alloy. A two-level factor.al exper.ment has.been us.d to accomplis. the objective of the exper.mental s.udy. The main cutting for.e, i.e. tangential for.e (Fc) and s.r.ace r.ughnes. (r.) wer. the r.s.ons. var.ables.inves.igated. The exper.mental r.s.lts.indicate that the pr.pos.d mathematical models.s.gges.ed could adequately des.r.be the per.or.ance indicator. within the limits.of the factor. that ar. being inves.igated. The feed, cutting s.eed and depth of cut is.the mos. s.gnificant factor.that influences.the s.r.ace r.ughnes. and the tangential for.e. However. ther. ar. other.factor. that pr.vide s.condar. contr.butions.to the per.or.ance indicator..

关键词： Titanium (Gr.de-5) Alloy Full Factor.al Exper.ment Des.gn s.r.ace r.ughnes. Tangential For.e Tur.ing Pr.ces.