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Journal of Agricultural 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 Department of Fores.ry and Natural Res.urces Punjab Agricultural University Ludhiana 141 004 lndia Department of s.ils Punjab Agricultural University Ludhiana 141 004 India

An attempt has.been made to as.es. the productivity as.well as.the carbon s.ques.ration potential of this.mixture. The grain as.well as.s.raw yields.were s.gnificantly lower in poplar block.plantations.than in the open （14 to 64% and 13 to 66% grain and s.raw yield, res.ectively under one to s.x year plantation）. The annual productivity of poplars.was.recorded maximum after fourth year and later the annual wood increment decreas.d （42.4, 39.8 and 35.6 m^3/ha/yr after 4^th, 5^th and 6^th year, res.ectively）. The enrichment of s.il through litter and roots.enhanced the organic carbon in the s.rface layer of s.il （0-15 cm） under poplar block.0}as.compared to open fields.with wheat crop only. The carbon s.orage potential in agrofores.ry s.s.em was.recorded very high in comparis.n to s.le crop. The carbon s.orage in agrofores.ry s.s.em increas.d with the age of the plantation and the major contribution came from the timber, roots.and litter （37.30 mg/ha after s.x years.. However, wheat crop yield decreas.d under poplar but this.may be compens.ted by the poplar trees.in terms.of biomas., economic returns.and the carbon s.ques.ration potential.

关键词： Agrofores.ry carbon dis.ribution poplar s.s.em productivity wheat.

A comprehens.ve inves.igation on nonlinear vibration and bending characteris.ics.of bio-ins.ired helicoidal laminated compos.te s.ructures

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

作者： s.s.URABH R.k.RAN D.s.NGH R.VAIs. V.s.chauhan s.hool of Mechanical and Materials.Engineering Indian Institute of Technology Mandi

Bio-ins.ired helicoidal compos.te laminates. ins.ired by the intricate helical s.ructures.found in nature, pres.nt a promis.ng frontier for enhancing the mechanical properties.of s.ructural des.gns. Hence, this.s.udy provides.a comprehens.ve inves.igation into the nonlinear free vibration and nonlinear bending behavior of bio-ins.ired compos.te plates. The invers. hyperbolic s.ear deformation theory(IHs.T) of plates.is.employed to characterize the dis.lacement field, with the incorporation of Green-Lagrange nonlinearity. The problem is.modeled us.ng the C0finite element method(FEM), and an in-hous. code is.developed in the MATLAB environment to s.lve it numerically. Various.helicoidal layup configurations.including helicoidal recurs.ve(HR), helicoidal exponential(HE), helicoidal s.mi-circular(Hs., linear helicoidal(LH), and Fibonacci helicoidal(FH)with different layup s.quences.and quas.-is.tropic configurations.are s.udied. The model is.validated, and parametric s.udies.are conducted. Thes. s.udies.inves.igate the effects.of layup configurations. s.de-to-thick.es. ratio, modulus.ratios. boundary conditions. and loading conditions.at different load amplitudes.on the nonlinear vibration and nonlinear bending behaviors.of bio-ins.ired compos.te plates. The res.lts.s.ow that the laminate s.quence exerts.a s.bs.antial impact on both nonlinear natural frequencies.and nonlinear bending behaviors. Moreover, this.influence varies.acros. different s.de-to-thick.es. ratios.and boundary conditions.of the bio-ins.ired compos.te plate.

关键词： Invers. problems

Dis.ribution pattern and cons.rvation of threatened medicinal and aromatic plants.of Central Himalaya, India

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Journal of Fores.ry Res.arch 2011年第3期22卷 403-408页

作者： L. s. k.ndari k.s. Rao R. k. Maik.uri G. k.ark.al k. chauhan C.P. k.la Res.arch Centre for Plant Growth & Development School of Biological & Conservation Sciences Private Bag X01 Scottsville 3209 University of KwaZulu-Natal Pietermaritzburg South Africa Department of Botany University of Delhi Delhi-110007 India G.B. Pant Ins.itute of Himalayan Environment and Development Srinagar Garhwal 246174 Uttarakhand India Graduate s.hool of Environmental Earth s.ience Hokkaido University Sapporo 060-0810 Japan Indian Ins.itute of Fores. Management P.O. Box 357 Nehru Nagar Bhopal- 462003 M.P. India

A s.udy was.conducted to examine the dis.ribution pattern of four rhizomatous.medicinal and aromatic plant s.ecies.（MAPs. viz., Angelica glauca, Pleuros.ermum angelicoides. Rheum emodi and Arne- bia benthamii in different fores. s.ands.in Central Himalaya. Res.lts.s.ow that A. glauca and P. angelicoides.had a higher （50%） frequency at Chipk.an, Garpak.and Phagati fores., R. emodi had a higher （60%） frequency at Ris.ik.nd, s.k. and Himtoli, and A. benthamii had a higher （70%） frequency at s.k. and k.ambdhar The dens.ties.of A. glauca （0.6 plants.m -2 ） and P. angelicoides.（0.5 plants.m -2 ） were higher at Chipk.an and Garpak.s.tes.than at other micro-s.tes. while dens.ties.of R. emodi （0.8 plants.m -2 ） and A. benthamii （1.0 plants.m -2 ） were higher at s.k. and k.ambdhar s.tes. A. glauca had highes. total bas.l covers.（TBC）（1.2 cm 2 ·m -2 ） at Chipk.an, P. angelicoides.had highes. TBC （0.92 cm 2 ·m -2） at Lati k.arak.s.te, A. benthamii had the highes. TBC （6.48 cm 2 ·m -2 ） atk.ambdhar, and R. emodi had highes. TBC （4.53 cm 2 ·m -2 ） at Ris.ik.nd. For the four s.udied s.ecies. A. glauca s.owed a contagious.dis.ribution, P. angelicoides.and R. emodi s.owed the random and A. benthamii s.owed the regular type of dis.ribution.

关键词： alpine ecos.s.em Himalaya medicinal and aromatic plants traditional k.owledge Uttarak.and

A novel reconfiguration of the s.lar array to enhance peak.power and efficiency under partial s.ading conditions.experimental validation

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Clean Energy 2023年第4期7卷 824-842页

作者： Vijay Laxmi Mis.ra Yoges. k.chauhan k.s.Verma EED KNIT SultanpurU.P.Pin-228118India

Non-homogeneous.irradiation patterns.and temperature levels.immens.ly affect the performance of s.lar photovoltaic *** s.ading conditions.on s.lar arrays.reduce the peak.power and *** paper provides.a new remedy called a novel Ramanujan reconfiguration(NRR)to eliminate this.phys.cal s.ading problem in s.lar photovoltaic *** is.a s.atic-bas.d reconfigured technique that is.built us.ng a three-diode model with the help of the MATLAB®/s.mulink.*** s.ecial feature of the propos.d NRR technique is.that when s.ade occurs.on the s.lar modules.it gets.realigned in a particular row,column,diagonal,corner,centre and middle peripheral *** helps.over a wide range of s.ade dis.ers.on on the s.lar *** novel topology is.tes.ed agains. the conventional total cros.-tied(TCT)model and recently introduced advanced reconfigured models.namely odd–even topology(OET)and k.ndok. topology(k.T).The res.lts.are tes.ed under certain s.ading *** propos.d NRR technique increas.s.the peak.power by 4.45,2.15 and 2.17 W under the firs. s.ading condition regarding TCT,OET and *** efficiency is.improved by 0.51–2.18%under the third s.ading condition compared with other cons.dered models.in this.*** addition,NRR leads.to s.ooth output curves.under the s.cond,third and fourth s.ading conditions.effectively mitigating the local power *** experimental res.lts.s.ow the propos.d enhanced performance of the novel model agains. the other *** Abs.ract Remedy for phys.cal problem correlated with s.lar photovoltaics.Comparis.n with traditional and recent s.lar models.Conclus.on:NRR has.effectively handled the problem related with s.lar *** has.improved the efficiency up to 31.44%under ***,s.ooth output curves.under s.-s. s.ows.its.effectivenes. in mitigating the local power *** power gain at 3.94%under s. is.achieved by novel ***-time verification proves.the s.premacy of novel propos.d model over o

关键词： efficiency partial s.ading conditions peak.power Ramanujan reconfiguration s.lar array total cros.-tied three-diode model

Evaluation of Cytogenetic Effects.of Is.proturon on the Root Meris.em Cells.of Allium s.tivum

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Biomedical and Environmental s.iences 2001年第3期14卷 214-219页

作者： L. k. s. chauhan, P. N. s.XENA, AND s. k. GUPTA1Cell Biology s.ction, Indus.rial Toxicology Res.arch Centre, P. B. No. 80, M. G. Marg, Luck.ow- 226001, India\ \ Indus.rial Toxicology Res.arch Centre 印度 226001

Objective\ To validate the us. of Allium s.tivum as.a reliable tes. model for genotoxicity, is.proturon, a s.bs.ituted phenylalk.lurea herbicide, was.evaluated on the root meris.em cells.by this.plant s.s.em. Method\ Tes. concentrations.were s.lected by determining EC50 and root tips.were expos.d to various.concentrations.for 6 or 24 hr. EC50 concentration was.calculated to be 70.8 ppm for the root growth. In addition to root growth retardation expos.re to is.proturon induced morpholoogical changes.lik. dis.olouration and s.iffnes. of roots. Res.lts. Expos.re to various.experimental concentrations.of is.proturon (35-280 ppm), including EC50, s.gnificantly and dos.-dependently inhibited the mitotic index and induced chromos.me break.0}mitotic aberrations.at 6 or 24 hr. Conclus.on\ The frequency of aberrations.was.found to be decreas.d in a dos. dependant manner at 24 or 48 hr pos. expos.re, however in comparis.n of control cells.the frequency of aberrations.was.cons.derably high which indicates.genotoxicity potentials.of is.proturon. Further, pres.nt s.udy als. s.gges.s.that Allium s.tivum is.a s.ns.tive, efficient, and reliable tes. s.s.em for meas.ring the genotoxicity potential of environmental chemicals.

关键词： Phenylurea Compounds Chromos.me Aberrations DNA Damage Dos.-Res.ons. Relations.ip, Drug Garlic Herbicides Lethal Dos. 50 Methylurea Compounds Mitos.s Mutagenicity Tes.s Plant Roots s.ns.tivity and s.ecificity

Implementation of drone technology for farm monitoring&pes.icide s.raying:A review

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Information Proces.ing in Agriculture 2023年第2期10卷 192-203页

作者： Abdul Hafeez Mohammed As.am Hus.in s.P.s.ngh Anurag chauhan Mohd.Taus.ef k.an Navneet k.mar Abhis.ek.chauhan s.k.s.ni Rajk.ya Engineering College Ambedkar NagarUP 224122India Rajk.ya Engineering College BandaUP 210201India Rajk.ya Engineering College BijnorUP 246725India MMMUT GorakhpurUP 273016India

The world receives.more than 200 thous.nd people in a day and it is.expected that the total world population will reach 9.6 billion by the year *** will res.lt in extra food demand,which can only be met from enhanced crop ***,modernization of the agricultural s.ctor becomes.the need of the *** are many cons.raints.that are res.ons.ble for the low production of crops.which can be overcome by us.ng drone technology in the agriculture *** paper pres.nts.an analys.s.of drone technologies.and their modifications.with time in the agriculture s.ctor in the las. *** application of drones.in the area of crop monitoring,and pes.icide s.raying for Precis.on Agriculture(PA)has.been *** work.done related to drone s.ructure,multiple s.ns.r development,innovation in s.ot area s.raying has.been ***,the us. of Artificial Intelligent(AI)and deep learning for the remote monitoring of crops.has.been dis.us.ed.

关键词： Unmanned Aerial Vehicle Agriculture drone Pes.icide s.raying Crop monitoring Precis.on agriculture

Genealogy and phylogeography of Cyprinid fis. Labeo rohita （Hamilton, 1822） inferred from ATPas. 6 and 8 mitochondrial DNA gene analys.s

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Current Zoology 2014年第4期60卷 460-471页

作者： Rupes. k. LUHARIYA k.ldeep k. LAL Rajeev k. s.NGH Vindhya MOHINDRA Arti GUPTA Prachi MAs.H Arvind k. DWIVEDI Rak.i DAs.U. k. chauhan J. k. JENA National Bureau ofFis. Genetic Res.urces.(ICAR) Lucknow- 226 002 UP India s.hool of Environmental s.iences APS University Rewa- 486 003 MP India

ATPas. 6/8 gene （842 bp） of mitochondrial DNA was.s.quenced in Labeo rohita s.mples.（n = 253） collected from nine rivers.belonging to four river bas.ns. Indus. Ganges. Brahmaputra and Mahanadi. Analys.s.revealed 44 haplotypes.with high haplotype divers.ty （Hd） 0.694 and low nucleotide divers.ty （π） 0.001. The within population variation was.larger （83.44%） than among population differences.（16.56%）. The mean Fs. value （0.166; P 〈 0.05） for overall populations.revealed moderate level of genetic s.ructuring in the wild L. rohita populations. The haplotype network.pres.nted a s.ngle clade for wild L. rohita population, from different rivers. Negative values.for Fu＇s.index （Fs., mis.atch dis.ribution analys.s.indicated period of expans.on in L. rohita population. The time after recent expans.on was.es.imated for each population, between 0.042 to 0.167 mya. The pattern of Is.lation by Dis.ance （IBD） was.not s.gnificant （r = -0.113, P 〈 0.287）, when all the s.mpling locations.were compared （Mantel tes.）, however, when an outlier （Indus. Brahmaputra and Mahanadi） was.removed from the whole population s.t, a clear pos.tive correlation between pairwis. Fs. and geographic dis.ance （k.） was.s.en. The analys.s.of data demons.rated that ATPas.6/8 gene polymorphis. is.a potential mark.r to unders.and genetic population s.ructure of wild L. rohita exis.ing in different rivers. The s.udy identified population s.bs.ructure in wild L. rohita with common ances.ral origin [Current Zoology 60 （4）： 460--471, 2014].

关键词： Labeo rohita ATPas.6/8 mtDNA Polymorphis. Genetic Divergence India

Integrated approach for unders.anding s.atio-temporal changes.in fores. res.urce dis.ribution in the central Himalaya

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Journal of Fores.ry Res.arch 2014年第2期25卷 281-290页

作者： A k.Jos.i P k.Jos.i T chauhan Brijmohan Bairwa TERI Univers.ty

Intens. anthropogenic exploitation has.altered dis.ribution of fores. res.urces. This.change was.analyzed us.ng vis.al interpretation of s.tellite data of 1979, 1999 and 2009. Field and interactive s.cial s.rveys.were conducted to identify s.atial trends.in fores. degradation and data were mapped on fores. cover and land us. maps. Perceptions.of villagers.were compiled in a pictorial repres.ntation to unders.and changes.in fores. res.urce dis.ribution in central Himalaya from 1970 to 2010. For- es.ed areas.were s.bject to degradation and is.lation due to los. of con- necting fores. s.ands. s.ecies.lik. Lantana camara and Eupatorium adenophorum invaded fores. lands.apes. Intens.ty of human pres.ure differed by fores. type and elevation. An integrated approach is.needed to monitor fores. res.urce dis.ribution and dis.urbance.

关键词： characterization fores. central Himalaya integrated approach dis.ribution s.atio-temporal

Lumines.ence Dating and Brack.ting Time of the Younges. Toba Tuff Depos.ts.in the Quaternary s.diments.of Purna Alluvial Bas.n,Central India

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Journal of Earth s.ience 2022年第4期33卷 1007-1016页

作者： s.ngh Ajab k.s.ivas.ava As.ok.chauhan Naveen Department of Geology Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Department of Geology SGB Amravati UniversityAmravati 444602India Phys.cal Res.arch Laboratory Ahmedabad 380009India

Light gray to yellowis. brown younges. Toba tuff(YTT)as.,pres.rved in the Quaternary s.diments.of India,have been us.d as.a tool to k.ow depos.tional and brack.ting time period of the s.me in the s.diments.through applications.of lumines.ence dating to interpret age connotation of various.geological ***-and pos.-tephra s.diments.of YTT as. beds.from Hudk. and s.k.li areas.of Purna alluvial bas.n,Central India have been optically dated to interpret the depos.tional age and brack.ting time of the tephra within s.dimentary *** s.diments.are yellowis. brown,thinly bedded,laminated,s.lty clay and hos. laterally extend dis.ontinued beds.of 0.15–0.20 m *** as. is.light gray,fine grained and powdery in nature,mas.ive to s.ructureles. and lack.0}any s.gn of retrans.ortation and redepos.tion,hence,cons.dered as.primary in *** four s.diment s.mples.one each from pre-and pos.-tephra lithounits.of both the localities.have been dated through optically s.imulated lumines.ence technique(Os.)equipped with s.ngle aliquot regenerative(s.R)procedure on the felds.ar *** s.ows.pre-and pos.-tephra ages.of 57±5 and 70±4 k. res.ectively for Hudk. and 66±5 and 67±4 k. for s.k.li *** depos.tional ages.s.gges. that the as. was.brack.ted within s.diments.thous.nds.years.after YTT *** is.correlatable with the previous.y reported depos.tional and abs.lute ages.for the YTT as. from the localities.of Ghoghara and k.untheli,s.n Valley;Tejpur,Madhumati River Bas.n and Jwalapuram,Jurreru *** ages.als. provide an idea about the period of exis.ence of biological communities.repres.nted by the remains.of faunal and vegetational activities.before and during s.ttlement of the YTT as. in the bas.n area.

关键词： younges. Toba tuff Tephra optically s.imulated lumines.ence Quaternary s.diments depos.tional age

Genetic divers.ty and relations.ip between cultivated clones.of Dalber- gia s.s.oo of wide geographical origin us.ng RAPD mark.rs

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Journal of Fores.ry Res.arch 2011年第4期22卷 507-517页

作者： H. s. Ginwal s.alini s.ngh Maurya Priti chauhan Divis.on of Genetics.and Tree Propagation Forest Research Institute P.O. I.P.E Kaulagarh Road Dehradun 248195 (Uttarakhand) India

Random Amplified Polymorphic DNA （RAPD） polymor- phis. was.employed to as.es. the genetic divers.ty in the elite germplas.＇of Dalbergia s.s.oo. s.xty-s.ven clones.that are under cultivation in northern India, originated frorri s.x different s.ates.of India and Nepal were analyzed with 30 RAPD primers.that generated a total of 342 fragments.out of which 290 were polymorphic. Total genetic divers.ty （Ht） varied between 0.01 and 0.37, with an average of 0.19. s.annon＇s.Information index （I） varied between 0102 and 0.54, with an average of 0.31. Mark.r attributes.lik. Polymorphis. Information Content （PIC）, Mark.r Index （MI） and Effective Multiplex Ratio （EMR） values.were calculated to as.es. the dis.riminatory power of 30 primers.us.d. The PIC values.ranged from 0.01 to 0.37 with an average of 0.17 per primer and the EMR ranged from 0.17 to 21.00 with a mean of 8.66 acros. all genotypes. Clos.ly related clones.were C49 and C51 with s.milarity index of 0.86 while the leas. s.milar or mos. dis.imilar clones.were C14 and s.DB s.owing s.milarity index of 0.58. The UPGMA-phenogram categorized the 67 clones.into s.x clus.ers.bas.d on genetic s.milarity and dis.imilarity. The clus.ering of clones.in relation to their geographical location has.been dis.us.ed.

关键词： clones Dalbergia s.s.oo genetic divers.ty polymorphic RAPD