检索结果-南通市图书馆

As.es.ing foundation behaviour.under.complex loading near.tunnels

在线全文

学校读者我要写书评

暂无评论

Jour.al of Mountain s.ience 2024年第10期21卷 3503-3520页

作者： Piyus. KUMAr.Vinay Bhus.an chauhan Aayus. KUMAr Civil Engineer.ng Depar.ment Madan Mohan Malaviya University of TechnologyGorakhpur 273010India

The s.ability of s.r.p footings.s.bjected to eccentr.cally inclined loads.is.cr.tical for.r.liable foundation *** s.udy inves.igates.the effect of a cir.ular.unlined tunnel in a r.ck mas. on the ultimate bear.ng capacity(UBC)of a foundation with width B under.inclined and eccentr.c *** finite element limit analys.s.was.employed to evaluate the r.duction in UBC of the footing r.s.ing above a *** examined cr.tical par.meter. include nor.alized load eccentr.city(e/B),load inclination(β),and hor.zontal and ver.ical dis.ances.of the tunnel fr.m the foundation(P/B and Q/B,r.s.ectively),along with r.ck mas. *** r.s.lts.r.veal that for.e/B≥0.25 and β≤60°,the r.duction coefficient,r.(c)≥0.90,s.gges.ing that the pr.s.nce of a tunnel has.a minimal impact on the load-bear.ng capacity of the footing,with failur. pr.mar.ly gover.ed by load eccentr.city and ***,potential failur. mechanis.s.ar. explor.d,s.owing that at lower.e/B,higher.β,and lower.Q/B,the tunnel s.gnificantly affects.footing's.failur. ***,at higher.e/B and lower.β,failur. is.due to r.tational effects.of footing,r.gar.les. of the tunnel's.*** pr.dict the r. mor. accur.tely,due to the time-cons.ming natur. of dir.ct calculations.both MLr.and ANN models.wer. *** MLr.model pr.vided a bas.line for.compar.s.n,while the ANN model,with a coefficient of deter.ination(r.)of 0.98,demons.r.ted s.per.or.accur.cy compar.d to the r.=0.96 of *** both appr.aches.ens.r.d r.bus. and efficient pr.dictions.of *** r. does.not dir.ctly pr.vide the r.duced UBC of footing due to pr.s.nce of tunnel,the s.udy intr.duced bear.ng capacity factor.Nc)to enable dir.ct calculation of the r.duced UBC of *** findings.offer.theor.tical guidelines.for.pr.liminar. des.gn and pr.vide pr.ctitioner. with an effective tool for.evaluating UBC r.duction in complex loading s.enar.os.involving tunnels.

关键词： Unlined tunnel s.allow foundation FELA r.ck Mas. ANN MLr

Modulator. r.le of plant-der.ved metabolites.on hos.-micr.biota inter.ctions.per.onalized ther.peutics.outlook

在线全文

学校读者我要写书评

暂无评论

BIOCELL 2024年第8期48卷 1127-1143页

作者： POOJA YADAV NAr.s.NGH chauhan Depar.ment of Biochemis.r. Maharshi Dayanand University RohtakRohtakHaryanaIndia

A diver.e ar.ay of micr.bes.in and on the human body cons.itute the *** micr.-r.s.dents.continuous.y inter.ct with the human hos. thr.ugh the language of metabolites.to dictate the hos.’s.phys.ology in health and *** biotic and abiotic component ens.r.ng a balanced hos.-micr.biota inter.ction ar. potential micr.biome ther.peutic agents.to over.ome human *** metabolites.ar. continually being us.d to tr.at var.ous.*** metabolites.tar.et the hos.’s.metabolic machiner. and hos.-gut micr.biota inter.ctions.to over.ome human *** the par.mount ther.peutic s.gnificance of the factor. affecting hos.-micr.biota inter.ctions.a compr.hens.ve over.iew of the modulator. r.le of plant-der.ved metabolites.in hos.-micr.biota inter.ctions.is.*** cur.ent r.view puts.an effor. into compr.hending the r.le of medicinal plants.in gut micr.biota modulation to mitigate var.ous.human *** would develop a holis.ic under.tanding of hos.micr.biota inter.ctions.and the r.le of effector. in health and dis.as.s.

关键词： Micr.biome ther.peutics Human gut micr.biota Hos.-micr.biota inter.ctions Per.onalized ther.peutics Plant metabolites Human health and dis.as.s

Impacts.of hydr.power.induced flow alter.tions.on compos.tion and diver.ity of r.par.an vegetation in the Wes.er. Himalayas. A cas. s.udy in Uttar.khand, India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Mountain s.ience 2024年第4期21卷 1272-1286页

作者： Dhar.veer.KAINTUr. s.byas.chi DAs.UPTA Dhanpal s.ngh chauhan Hemvati Nandan Bahuguna Gar.wal Univer.ity Srinagar Garhwal 246174India Tr.pur. Univer.ity SuryamaninagarAgartala 799022India

The incr.as.ng demand for.water.and ener.y r.s.ur.es.has.led to wides.r.ad dam cons.r.ction,par.icular.y in ecologically s.ns.tive r.gions.like the Himalayan *** s.udy focus.s.on the Uttar.khand s.ate in the Wes.er. Himalayas.wher. hydr.electr.c pr.jects.HEPs.have s.gnificantly alter.d r.ver.flow *** r.s.ar.h inves.igates.the impact of flow alter.tions.on the compos.tion and s.r.ctur. of r.par.an vegetation in the Gar.wal Himalayas.s.ecifically analys.ng four.r.ver. r.gulated by hydr.electr.c *** the pair.d-r.ach compar.s.n method,contr.l(undis.ur.ed),diver.ed(downs.r.am of bar.age/dam),and alter.d flow conditions.downs.r.am of water.outlet)wer. *** r.s.ar.h r.veals.diver.e and unique r.par.an ecos.s.ems.with 89 gener. and 113 taxa identified,s.owcas.ng the dominance of families.like As.er.ceae and *** s.udy unveils.the s.r.ctur.l impor.ance of key s.ecies.s.ch as.Ber.er.s.as.atica and Ar.emis.a *** dens.ty,diver.ity,and r.chnes. of s.r.b and her. s.ecies.var. s.gnificantly acr.s. flow ***,alter.d flow conditions.demons.r.te r.s.lience in vegetation s.r.ctur.,while diver.ed conditions.exhibit decr.as.d s.ecies.r.chnes. and *** s.udy emphas.zes.the impor.ance of nuanced envir.nmental flow management for.mitigating adver.e effects.on r.par.an biodiver.ity in the fr.gile Himalayan *** findings.contr.bute to the global dis.our.e on dam impacts.and r.par.an ecology,s.edding light on the complexities.of this.dynamic r.lations.ip in a vulner.ble ecos.s.em.

关键词： Dam cons.r.ction Water.s.r.s. Wes.er. Himalayas Dis.ur.ed flow r.gimes r.par.an ecos.s.em

Piezoelectr.c mater.als.s.lection for.s.ns.r.applications.us.ng finite element and multiple attr.bute decis.on-making appr.aches

在线全文

学校读者我要写书评

暂无评论

Jour.al of Advanced Dielectr.cs 2015年第1期5卷 21-28页

作者： Anur.ddh Kumar.Ans.ul s.ar.a r.jeev Kumar.r.hul Vais. Vis.al s.chauhan C.r.Bowen s.hool of Engineer.ng Indian Institute of Technology Mandi Himachal Pradesh 175001India Depar.ment of Mechanical Engineer.ng Univer.ity of Bath BathBA27AYUK

This.paper.examines.the s.lection and per.or.ance evaluation of a var.ety of piezoelectr.c mater.als.for.cantilever.bas.d s.ns.r.*** finite element analys.s.method is.implemented to evaluate the r.lative impor.ance of mater.als.pr.per.ies.s.ch as.Young's.Modulus.E),piezoelectr.c s.r.s. cons.ants.e_(31)),dielectr.c cons.ant(ε)and Pois.on's.r.tio(ν)for.cantilever.bas.d s.ns.r.*** analytic hier.r.hy pr.ces.(AHP)is.us.d to as.ign weights.to the pr.per.ies.that ar. s.udied for.the s.ns.r.s.r.ctur. under.s.udy.A technique for.or.er.pr.fer.nce by s.milar.ty to ideal s.lution(TOPs.s.is.us.d to r.nk the per.or.ance of the piezoelectr.c mater.als.in the context of s.ns.r.voltage *** r.nking achieved by the TOPs.s.analys.s.is.in good agr.ement with the r.s.lts.obtained fr.m finite element method *** numer.cal s.mulations.s.ow that K_(0.5)Na_(0.5)NbO_(3)-Lis.O_(3)(KNN-Ls.mater.als.family is.impor.ant for.s.ns.r.***'s.modulus.E)is.mos. influencing mater.al's.pr.per.y followed by piezoelectr.c cons.ant(e_(31)),dielectr.c cons.ant(ε)and Pois.on's.r.tio(ν)for.cantilever.bas.d piezoelectr.c s.ns.r.applications.

关键词： Lead-fr.e piezoelectr.c cer.mics finite element modeling analytical hier.r.hy pr.ces. mater.al s.lection

Tr.o-Geometr.c mean-bas.d thr.e-s.age r.nge–Kutta algor.thm to s.lve initial value pr.blem ar.s.ng in autonomous.s.s.ems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inter.ational Jour.al of Modeling, s.mulation, and s.ientific Computing 2018年第4期9卷 83-94页

作者： Vijeyata chauhan Pankaj Kumar.s.1}vas.ava Depar.ment of Mathematics.Jaypee Ins.itute of Infor.ation Technology Noida-201304 India

In the pr.s.nt wor.dwide s.enar.o,plenty of pr.blems.ar.s.ng in s.ience and engineer.ng which can be modeled as.differ.ntial equations.and out of thes.,autonomous.s.s.em has.become a s.bject of gr.at *** laws.of phys.cs.in which time is.cons.der.d as.an independent var.able ar. expr.s.ed as.autonomous.*** this.paper.r.nge–Kutta(r.)thr.e-s.age geometr.c mean method is.us.d to s.lve the initial value pr.blem ar.s.s.in autonomous.*** method is.dis.us.ed in detail,conver.ence of method is.dis.us.ed,the accur.cy and efficiency of the method ar. pr.ved by cons.der.ng a numer.cal *** r.s.lt is.compar.d to s.me other.methods.and pr.pos.d method is.found to be mor. *** detailed analys.s.of er.or.es.imation confir.s.that pr.pos.d method is.mor. efficient as.compar.d to other.methods.

关键词： Autonomous.IVP geometr.c mean abs.lute er.or explicit r.nge-Kutta method.

Micr.wave s.atter.ng for.s.il Textur. at X-Band and Its.r.tr.eval Us.ng Genetic Algor.thm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances.in r.mote s.ns.ng 2014年第3期3卷 120-127页

作者： r.jes. Tiwar. r. K. s.ngh D. s. chauhan O. P. s.ngh r. Pr.kas. D. s.ngh Uttar.khand Technical Univer.ity Dehradun India Depar.ment of Electr.nics.Engineer.ng Amity University Lucknow Campus India Depar.ment of Electr.nics.and Communication Engineer.ng Gr.phic Er. Univer.ity Dehradun India Depar.ment of Electr.nics.and Communication Engineer.ng Indian Institute of Technology Roorkee Roorkee India

In the pr.s.nt paper. we have s.udied the effect of s.il textur.s.?i.e., s.nd, s.lt and clay on micr.wave s.atter.ng at X-band (10 GHz) at var.ous.incidence angles.and like polar.zations.(i.e., Hor.zontal-Hor.zontal;HH-, Ver.ical-Ver.ical;VV-). We have pr.pos.d a r.tr.eval technique bas.d on Genetic Algor.thm (GA) to r.tr.eve s.il textur.. For.this.pur.os., ten types.of s.il mixtur.s.having differ.nt per.entage of s.nd, s.lt and clay have been analyzed. The obs.r.ations.wer. car.ied out by ingenious.y as.embled X-band s.atter.meter. A good agr.ement has.been noticed between es.imated and obs.r.ed s.il textur.. s.udy infer. that s.il textur. is.quite s.ns.tive to r.dar.s.atter.ng and it is.pos.ible to r.tr.eve s.il textur. with r.dar.s.atter.meter.data with good accur.cy and this.type of r.tr.eved r.s.lts.can be helpful to pr.dict s.il s.r.ngth as.well as.s.il er.s.on of the par.icular.ar.a.

关键词： s.il Textur. r.tr.eval Micr.wave r.mote s.ns.ng

Ecological featur.s.of Aconitum balfour.i (Br.hl) Muk.-an endanger.d medicinal plant in the nor.hwes. Himalaya

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of For.s.r. r.s.ar.h 2012年第1期23卷 145-150页

作者： Bhuwendr. s.ngh r.s. chauhan r.jiv K. Vas.is.ha M. C. Nautiyal P. Pr.s.d High Altitude Plant Phys.ology r.s.ar.h Centr.. PO Box - 14 Hemwati Nandan Bahuguna Garhwal Central University Srinagar Srinagar - 246174 Uttarakhand India

Aconitum balfour.i （Br.hl） Muk. （r.nunculaceae） is.an en- danger.d medicinal plant. Natur.l populations.wer. s.r.eyed in the nor.hwes. Himalaya for.population es.imation and evaluation of elite ger.plas.. Vegetation s.mpling of quadr.ts.was.conducted us.ng the ver.ical belt tr.ns.ct method in ar.as.s.ppor.ing A. balfour.i. Plant den- s.ty and r.lative dominance ofA. balfour.i wer. low compar.d with other.alpine s.ecies. Thr.at s.atus.was.deter.ined on a s.te-by-s.te bas.s.as.well as.for.entir. wes.er. Himalaya..4. balfour.i was.gener.lly clas.ified as.endanger.d on the bas.s.of geogr.phic dis.r.bution and cr.tically en- danger.d on the bas.s.of abundance. We found the natur.l geogr.phic dis.r.bution of.4. balfour.i to be diminis.ing due to habitat des.r.ction. Immediate cor.ective management meas.r.s.ar. needed for.s.s.ainable utilization and long-ter. cons.r.ation of the s.ecies.in the wild.

关键词： Endanger.d s.ecies medicinal plant s.il analys.s popula-tion es.imation r.nunculaceae

Micr.pr.pagation of Thr.e Bamboo s.ecies.fr.m Nodal Explants.of Matur. Culms

在线全文

学校读者我要写书评

暂无评论

Jour.al of Agr.cultur.l s.ience and Technology 2010年第2期4卷 1-7页

作者： M.K. s.ndhu s.K. chauhan r. s.ar.a s.s. Gos.l Depar.ment of For.s.r. and Natur.l r.s.ur.es Punjab Agricultural University Ludhiana 141004 India s.hool of Agr.cultur.l Biotechnology Punjab Agricultural University Ludhiana 141004 India

A micr.pr.pagation technique is.developed for.the multiplication of Dendr.calamus.s.r.ctus.（D. s.r.ctus., Dendr.calamus.as.er.（19. as.er. and Bambus. bambos.（B. bambos. thr.ugh s.oot pr.lifer.tion. Nodal explants.obtained fr.m field gown clumps.wer. us.d to initiate cultur.s. s.oots.wer. induced on Mur.s.ige and s.oog＇s.（Ms. medium s.pplemented with 5 mg L^-1 6-benzylamino pur.ne （BAP）. r.pid s.oot multiplication was.obtained on Ms.medium containing 3 mg Lt BAP in D. as.er. B. bambos.and 2 mg L^-1 BAP in D. s.r.ctus. In vitr. multiplied s.oots.s.owed bes. r.ot induction on half s.r.ngth Ms.s.pplemented with 1 mg L^-1 indole-3 butyr.c acid （IBA） and 0.5 mg L^-1 1-naphthalene acetic acid （NAA） in D. as.er. Pr.-r.oting conditioning followed by cultur.ng on half s.r.ngth Ms.s.pplemented with 1 mg L^-1 IBA and 2 mg L^-1 IBA s.owed maximum r.ot induction in D. s.r.ctus.and B. bambos. r.s.ectively. Fur.her.r.ot pr.lifer.tion was.obtained on hor.one fr.e medium. The micr.pr.pagated plantlets.wer. acclimatized and s.cces.fully tr.ns.er.ed on s.il in gr.en hous..

关键词： Micr.r.pagation Dendr.calamus.s.r.ctus Dendr.calamus.as.er Bambus. bambos nodal s.gments

Lumines.ence Dating and Br.cketing Time of the Younges. Toba Tuff Depos.ts.in the Quater.ar. s.diments.of Pur.a Alluvial Bas.n,Centr.l India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Ear.h s.ience 2022年第4期33卷 1007-1016页

作者： s.ngh Ajab K.s.0}vas.ava As.ok chauhan Naveen Depar.ment of Geology Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Depar.ment of Geology SGB Amravati UniversityAmravati 444602India Phys.cal r.s.ar.h Labor.tor. Ahmedabad 380009India

Light gr.y to yellowis. br.wn younges. Toba tuff(YTT)as.,pr.s.r.ed in the Quater.ar. s.diments.of India,have been us.d as.a tool to know depos.tional and br.cketing time per.od of the s.me in the s.diments.thr.ugh applications.of lumines.ence dating to inter.r.t age connotation of var.ous.geological ***-and pos.-tephr. s.diments.of YTT as. beds.fr.m Hudki and s.kali ar.as.of Pur.a alluvial bas.n,Centr.l India have been optically dated to inter.r.t the depos.tional age and br.cketing time of the tephr. within s.dimentar. *** s.diments.ar. yellowis. br.wn,thinly bedded,laminated,s.lty clay and hos. later.lly extend dis.ontinued beds.of 0.15–0.20 m *** as. is.light gr.y,fine gr.ined and powder. in natur.,mas.ive to s.r.ctur.les. and lacks.any s.gn of r.tr.ns.or.ation and r.depos.tion,hence,cons.der.d as.pr.mar. in *** four.s.diment s.mples.one each fr.m pr.-and pos.-tephr. lithounits.of both the localities.have been dated thr.ugh optically s.imulated lumines.ence technique(Os.)equipped with s.ngle aliquot r.gener.tive(s.r.pr.cedur. on the felds.ar.*** s.ows.pr.-and pos.-tephr. ages.of 57±5 and 70±4 ka r.s.ectively for.Hudki and 66±5 and 67±4 ka for.s.kali *** depos.tional ages.s.gges. that the as. was.br.cketed within s.diments.thous.nds.year. after.YTT *** is.cor.elatable with the pr.vious.y r.por.ed depos.tional and abs.lute ages.for.the YTT as. fr.m the localities.of Ghoghar. and Khuntheli,s.n Valley;Tejpur.Madhumati r.ver.Bas.n and Jwalapur.m,Jur.er. *** ages.als. pr.vide an idea about the per.od of exis.ence of biological communities.r.pr.s.nted by the r.mains.of faunal and vegetational activities.befor. and dur.ng s.ttlement of the YTT as. in the bas.n ar.a.

关键词： younges. Toba tuff Tephr. optically s.imulated lumines.ence Quater.ar. s.diments depos.tional age