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Heavy quar.onia spectr. and their.decays in a r.lativistic quar. model

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Chinese Physics C 2011年第11期35卷 997-1003页

作者： Bhaghyesh K. B. Vijaya Kumar.Antony prakash Monteir. Depar.ment of Physics Mangalore University

Using the phenomenological r.lativistic har.onic model （r.M） for.quar.s, we have obtained the masses of S wave char.onium and bottomonium states. The full Hamiltonian used in the investigation has Lor.ntz scalar.plus vector.confinement potential, along with the confined one gluon exchange potential （COGEP）. A good agr.ement with the exper.mental masses for.the gr.und and the r.dially excited states is obtained both for.the tr.plet and singlet S wave mesons. The decay pr.per.ies of the gr.und state char.onium and bottomonium ar. investigated.

关键词： r.lativistic har.onic model confined one gluon exchange potential S-wave spectr.m decay r.tes

Par.metr.c optimization of dr. sliding wear.loss of copper.MWCNT composites

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Tr.nsactions of Nonfer.ous Metals Society of China 2017年第3期27卷 627-637页

作者： K.SOOr.Aprakash TITUSTHANKACHAN r.r.DHAKr.SHNAN Depar.ment of Mechanical Engineer.ng Anna University Regional CampusCoimbatore-641046Tamil NaduIndia

The wear.behavior.of multi-walled car.on nano-tubes(MWCNTs)r.infor.ed copper.metal matr.x composites(MMCs)pr.cessed thr.ugh powder.metallur.y(PM)r.ute was focused on and fur.her.investigated for.var.ing MWCNT quantity viaexper.mental,statistical and ar.ificial neur.l networ.(ANN)*** incr.ases with incr.ment in *** loss against var.ing load and sliding distance was analyzed as per.L16or.hogonal ar.ay using a *** par.meter.optimization by Taguchi’s method r.vealed that wear.loss was affected to a gr.ater.extent by theintr.duction of MWCNT;this wear.r.sistant pr.per.y of newer.composite was fur.her.analyzed and confir.ed thr.ugh analysis ofvar.ance(ANOVA).MWCNT content(76.48%)is the most influencing factor.on wear.loss followed by applied load(12.18%)andsliding distance(9.91%).ANN model simulations for.var.ing hidden nodes wer. tr.ed out and the model yielding lower.MAE valuewith3-7-1networ. topology is identified to be *** model pr.dictions with r.value of99.5%which highly cor.elated withthe outcomes of ANOVA wer. successfully employed to investigate individual par.meter.s effect on wear.loss of Cu?MWCNTMMCs.

关键词： copper multi-walled car.on nano-tube (MWCNT) powder.metallur.y wear Taguchi method analysis of var.ance(ANOVA) ar.ificial neur.l networ.

An efficient computational technique for.time-fr.ctional modified Degasper.s-Pr.cesi equation ar.sing in pr.pagation of nonlinear.disper.ive waves

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Jour.al of Ocean Engineer.ng and Science 2021年第1期6卷 30-39页

作者： Ved prakash Dubey r.jnesh Kumar.Jagdev Singh Devendr. Kumar Faculty of Mathematical and Statistical Sciences Shri Ramswaroop Memorial UniversityLucknow-Deva RoadUttar Pradesh-225003India Depar.ment of Applied Science and Humanities Government Engineering CollegeNawadaDepartment of Science and TechnologyBihar-805122India Depar.ment of Mathematics JECRC UniversityJaipur-303905RajasthanIndia Depar.ment of Mathematics University of RajasthanJaipur-302004RajasthanIndia

In this paper.an efficient hybr.d numer.cal scheme which is based on a joint ventur. of the q-homotopy analysis method and Sumudu tr.nsfor. is applied to investigate the time-fr.ctional modified Degasper.s-Pr.cesi(DP)*** pr.sent study consider. the Caputo fr.ctional *** fr.ctional or.er.modified DP model is ver. impor.ant and plays a gr.at r.le in study of ocean engineer.ng and *** pr.posed scheme pr.vides a beautiful oppor.unity for.pr.per.selection of the auxiliar. par.meter.h and the asymptotic par.meter.(≥1)to handle mainly the differ.ntial equations of nonlinear.*** offer.d scheme pr.duces the solution in the shape of a conver.ent ser.es in a lar.e admissible domain which is helpful to r.gulate the r.gion of conver.ence of a ser.es *** pr.posed wor. computes the appr.ximate analytical solution of the fr.ctional modified DP equation systematically and also pr.sents gr.phically the var.ation of the obtained solution for.diver.e values of the fr.ctional par.meter..

关键词： Fr.ctional Degasper.s-Pr.cesi equation Nonlinear.disper.ive waves Analytical solution q-homotopy analysis method Sumudu tr.nsfor.

The Impact of r.tr.fitting Wor. on Awar.ness r.ising and Knowledge Tr.nsfer.in Aceh Pr.vince,Indonesia

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Inter.ational Jour.al of Disaster.r.sk Science 2013年第4期4卷 182-189页

作者： Har. Dar.han Shr.stha Jishnu Subedi r.uichi Yatabe Netr. prakash Bhandar. Depar.ment of Civil Engineer.ng Institute of EngineeringTribhuvan UniversityPulchowkKathmanduNepal Gr.duate School of Science and Engineer.ng Ehime UniversityMatsuyamaEhime 790-8577Japan

Some of the buildings in Aceh Pr.vince,Indonesia constr.cted after.the 2004 ear.hquake and tsunami disaster.wer. found *** vulner.ble buildings wer. r.tr.fitted to make them safer.and child *** the Childr.n,one of the implementing agencies,assumed that the pr.cess of r.tr.fitting would attr.ct inter.st fr.m the communities,r.ise their.ear.hquake awar.ness,stimulate ear.hquake safe constr.ction pr.ctices,and contr.bute to ear.hquake disaster.r.sk *** was also assumed that the r.tr.fitting pr.cess would benefit the communities thr.ugh knowledge tr.nsfer.of safer.constr.ction *** assess the impact on awar.ness and knowledge tr.nsfer.of the r.tr.fitting wor. car.ied out by Save the Childr.n fr.m 2005 to 2008,a sur.ey was car.ied out in 2009.A total of 104 people who wer. dir.ctly involved in the r.tr.fitting/r.habilitation pr.cess wer. *** sur.ey cover.d four.distr.cts in Aceh Pr.vince,Indonesia wher. schools,health facilities,and houses wer. *** sur.ey r.sults show that the r.spondents felt that the impact of r.tr.fitting wor. on tr.nsfer.ing knowledge in the communities was not ***,the r.spondents felt that the r.tr.fitting wor. had a definite impact on r.ising awar.ness of disaster.r.sks and measur.s for.disaster.r.sk r.duction.

关键词： disaster fitted Impact

Micr.topogr.phy dr.ven plant species composition in alpine r.gion: a fine-scale study fr.m Souther. Nor.ay

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Jour.al of Mountain Science 2020年第3期17卷 542-555页

作者： BHATTAr.I prakash BHATTA Kuber.Pr.sad ZHANG Yang-jian VETAAS Ole r.idar Key Labor.tor. of Ecosystem Networ. Obser.ation and Modelling Institute of Geographic Sciences and Natural Resources ResearchBeijing 100101China Univer.ity of Chinese Academy of Sciences Beijing 100049China Depar.ment of Biological Sciences University of BergenBergenN-5020Norway Depar.ment of Geogr.phy University of BergenBergenN-5020Norway

This study explor.s the r.lationship between the species composition of lichen and vascular.plant species with micr.topogr.phy at fine scale. We conducted our.study in Har.enger.idda National Par., Nor.ay. Specifically, we aim to test whether.the species r.chness of differ.nt plant lifefor.s peaks at middle of the micr.topogr.phy gr.dient, and then explain the obser.ed patter.s with an aid of snow cover.gr.dient along micr.topogr.phy and snow cover. We sampled 69 species of vascular.plants and lichens in 151 plots of 4 m^2 along 23 tr.nsects dur.ng summer.on Tr.nsbu, Sandhaug and Besso. Detr.nded cor.espondence analysis(DCA) was per.or.ed to explor. how micr.topogr.phical gr.dient was r.lated to the var.ation in the species composition. One-way ANOVA was per.or.ed to test the micr.topogr.phic var.ability in species ***, gener.lized linear.model(GLM) was used to r.veal species r.chness patter.s along the snow cover.gr.dient. The fir.t axis in DCA r.pr.sents the complex gr.dient fr.m snow fr.e r.dge to wet snowbed habitats and the second axis r.pr.sents a gr.dient fr.m acidic to calcar.ous sites. Lichen’s species r.chness is gr.ater.in r.dge than in snowbeds, while all other.life for.s follow the opposite tr.nd. Species r.chness for.total plant species, vascular.plant species and her.aceous plant species incr.ased with incr.ase in weighted aver.ge snow indicator.value(WASI), whilst species r.chness for.lichen species declined substantially towar.s the maximum WASI value. In contr.st, species r.chness for.dwar. shr.b species showed a unimodal r.lationship with WASI. This study shows that liquid water.availability pr.vides a good potential explanation for.species composition and r.chness in mountains, which is contr.lled by snow cover.and pr.valent wind dir.ction.

关键词： Species r.chness Water ener.y dynamics hypothesis Weighted aver.ge snow indicator value Micr.topogr.phy Or.ination

Effect of plasma tr.atment on the seed ger.ination and seedling gr.wth of r.dish(r.phanus sativus)

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Plasma Science and Technology 2022年第1期24卷 95-107页

作者： r.jesh prakash GUr.GAIN Hom Bahadur.BANIYA Santosh DHUNGANA Ganesh Kuwar.CHHETr. Binita SEDHAI Nir.j BASNET Aavash SHAKYA Bishnu Pr.sad PANDEY Suman prakash Pr.DHAN Ujjwal Man JOSHI Deepak Pr.sad SUBEDI Depar.ment of Physics School of SciencesKathmandu UniversityDhulikhelKavre 45210Nepal Depar.ment of Physics Tri-Chandra Multiple CampusTribhuvan UniversityKathmandu 44600Nepal Depar.ment of Chemical Science and Engineer.ng Kathmandu UniversityDhulikhelKavre 45210Nepal Depar.ment of Envir.nmental Science and Engineer.ng Kathmandu UniversityDhulikhelKavre 45210Nepal

The effect on the ger.ination and seedling gr.wth of r.dish(r.phanus sativus)seeds wer. examined employing a dielectr.c bar.ier.dischar.e(DBD)at atmospher.c pr.ssur. and r.om temper.tur. for.var.ous tr.atment *** plasma using ar.on gas of flow r.te 21 m^(-1)was employed in this *** seeds wer. tr.ated with DBD plasma for.1-5 min,*** char.cter.stics,seedling gr.wth par.meter.,the contact angle of the seed coat,water.uptake capacity,mass loss,the temper.tur. of the seeds,chlor.phyll,and car.tenoid contents of the seedlings wer. measur.d befor. and after.the DBD plasma *** tr.atment of r.dish seeds significantly incr.ased ger.ination-r.lated char.cter.,including ger.ination per.entage,fr.sh and dr. weight,vigor.index,and total car.tenoids ***,the cumulative pr.duction r.te was found to be *** fr.m the exper.ment indicate an acceler.tion in the water.uptake of the r.dish seeds and make the seed sur.ace hydr.philic by plasma *** electr.n micr.scopy analysis showed that etching effects on the seed coat occur.ed after.the ar.on plasma tr.atments,which affected the wettability of the r.dish *** exper.mental findings showed that seeds being tr.ated by DBD plasma for.2 and 3 min had a positive effect on the ger.ination and seedling gr.wth of r.dish.

关键词： dielectr.c bar.ier.dischar.e(DBD) electr.n temper.tur. electr.n density ger.ination gr.wth par.meter. r.dish seeds

Computational engineer.ng analysis of exter.al geometr.cal modifications on MQ-1 unmanned combat aer.al vehicle

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Chinese Jour.al of Aer.nautics 2020年第4期33卷 1154-1165页

作者： prakash BAGUL Zeeshan A.r.NA Kar. W.JENKINS LászlóKoNoZSY Centr. for.Computational Engineer.ng Sciences Cranfield UniversityCranfield MK43 OALUnited Kingdom

This paper.focuses on the effects of exter.al geometr.cal modifications on the aer.dynamic char.cter.stics of the MQ-1 pr.dator.Unmanned Combat Aer.al Vehicle(UCAV)using computational fluid *** investigations ar. per.or.ed for.16 flight conditions at an altitude of7.6 km and at a constant speed of 56.32 m/*** models ar. analysed,namely the baseline model and the model with exter.al geometr.cal modifications installed on *** the models ar. investigated for.var.ous angles of attack fr.m-4°to 16°,angles of bank fr.m 0°to 6°and angles of yaw fr.m 0°to 4°.Due to the unavailability of any exper.mental(wind tunnel or.flight test)data for.this UCAV in the liter.tur.,a thor.ugh ver.fication of calculations pr.cess is pr.sented to demonstr.te confidence level in the numer.cal *** analysis quantifies the loss of lift and incr.ase in dr.g for.the modified ver.ion of the MQ-1 pr.dator.UCAV along with the identification of stall *** impr.vement(in dr.g)of up to 96%has been obtained by r.locating exter.al modifications,wher.as global dr.g for.e r.duction of r.ughly 0.5%is *** effects of exter.al geometr.cal modifications on the contr.l sur.aces indicate the blanking phenomenon and r.duction in for.es on the contr.l sur.aces that can r.duce the aer.dynamic per.or.ance of the UCAV.

关键词： Aer.dynamics CFD Geometr.cal modifications MQ-1 pr.dator Tur.ulent flows Unmanned combat aer.al vehicle Unsteady r.ynoldsaver.ged Navier.Stokes

Hunting of hunted:an ensemble modeling appr.ach to evaluate suitable habitats for.car.cals in India

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Ecological Pr.cesses 2022年第1期11卷 744-757页

作者： Ashish Kumar.Jangid Chandr. prakash Singh Jai Singh Par.har.Jasbir.Singh Chauhan r.jnish Kumar.Singh prakash Kumar.Ver.a Amr.tanshu Singh Shantanu Shar.a Shekhar.Kolipaka Wildlife Institute of India DehradunUttarakhand 248001India Space Applications Centr. Indian Space Research OrganisationAhmedabadGujarat 380015India Madhya Pr.desh State For.st Depar.ment Madhya Pradesh Tiger Foundation SocietyKuno National ParkBhopalMadhya Pradesh 462001India Leo Foundation WageningenThe Netherlands

Backgr.und:Lar.e-scale hunting and var.ous anthr.pogenic pr.ssur.s in the r.cent past have pushed the Asiatic car.cal(Car.cal car.cal schmitzi),an elusive medium-sized and locally thr.atened felid species towar.s local extinction in *** widely distr.buted histor.cally,it has been spar.ely r.por.ed fr.m sever.l r.gions of centr.l and nor.her. states in India till twentieth ***,the species distr.bution became confined only to the states of r.jasthan,Gujar.t and Madhya Pr.desh,which have had r.por.ed sightings in the twenty-fir.t *** or.er.to highlight the potentially suitable habitats for.Asiatic car.cals in India,we tar.eted for.h-filter.ng of the spatial model ensemble by cr.ating and utilizing the validated and spatially thinned species pr.sence infor.ation(n=69)and r.lated ecological var.ables(ar.dity,NDVI,pr.cipitation seasonality,temper.tur. seasonality,ter.ain r.ggedness),filter.d with anthr.pological var.able(nightlight).r.sults:Out of eight spatial pr.diction models,the two most par.imonious models,r.ndom For.st(AUC 0.91)and MaxEnt(AUC 0.89)wer. weighted and *** ensemble model indicated sever.l cluster.d habitats,cover.ng 1207.83 km^(2)ar.as in Kachchh(Gujar.t),Ar.valli mountains(r.jasthan),Malwa plateau(r.jasthan and Madhya Pr.desh),and Bundelkhand r.gion(Madhya Pr.desh)as potentially suitable habitats for.*** pr.babilities of pixels wer. fur.her.r.gr.ssed with conver.ed vegetation height data within selected highly potential habitats,i.e.,r.nthambor. Kuno Landscape(r.L)(suitability~0.44+0.03(vegetation height)^(**),r.(2)=0.27).The r.gr.ssion model infer.ed a significant positive r.lation between vegetation height and habitat suitability,hence the lowest or.inal class out of thr.e classes of conver.ed vegetation height was masked out fr.m the r.L,which yielded in an ar.a of 567 km^(2) as potentially highly suitable habitats for.car.cals,which can be fur.her.pr.posed as sur.ey ar.as and conser.ation pr.or.ty ar.

关键词： Medium-sized cat Car.cal car.cal schmitzi Potentially suitable habitat Dr.lands Potential sur.ey ar.a

Tr.bological per.or.ance of ir.n- and nickel-base self-lubr.cating claddings containing metal sulfides at high temper.tur.

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Fr.ction 2022年第12期10卷 2069-2085页

作者： Hector.TOr.ES Tugce CAYKAr. Jens HAr.ELL Janne NUr.INEN Br.ham prakash Manel r.Dr.GUEZ r.POLL AC2T r.sear.h GmbH Viktor-Kaplan-Straße 2/CWiener Neustadt 2700Austria Depar.ment of Applied Physics and Mechanical Engineer.ng LuleåUniversity of TechnologyLuleå97187Sweden Castolin Eutectic GmbH Gutenbergstraße 10Kriftel 65830Germany Depar.ment of Mechanical Engineer.ng Tsinghua UniversityBeijing 100084China

Ir.n-based coatings with the incor.or.tion of solid lubr.cants have been pr.par.d by means of laser.cladding,in an effor. to contr.l fr.ction and decr.ase tool wear.at high temper.tur.s dur.ng metal for.ing *** choice of a Fe-based powder.has been consider.d advantageous,as it can lead to decr.ased costs compar.d to nickel-based claddings pr.viously studied by the author.,in addition to having a lower.envir.nmental *** par.icular.the incor.or.tion of tr.nsition metal dichalcogenides such as MoS_(2) as pr.cur.or. leads to the encapsulation of silver.in Fe-based self-lubr.cating claddings,r.sulting in a unifor. distr.bution of the soft metal acr.ss the thickness of the *** tr.bological evaluation of the claddings at high temper.tur.s shows that the addition of lubr.cious compounds leads to lower.fr.ction at r.om temper.tur. and significantly decr.ased wear.up to 600℃ compar.d to the unmodified ir.n-based r.fer.nce alloy,although higher.than similar.self-lubr.cating Ni-based *** or.er.to cast light into these obser.ed differ.nces,the cor.esponding micr.str.ctur.s,phase composition,and self-lubr.cating mechanisms have been studied and compar.d for.Fe-and Ni-based claddings having both of them the addition of silver.and MoS_(2).The r.sults suggest a key r.le of the for.ation of pr.tective tr.bolayer. on the counter.body dur.ng high temper.tur. sliding *** simulation of the phase evolution dur.ng solidification r.veals that the for.ation of differ.nt chr.mium-and nickel-based metal sulfides in Fe-and Ni-claddings dur.ng laser.cladding by the decomposition of MoS_(2) plays a key r.le in deter.ining their.tr.bological behaviour.at high temper.tur.s.

关键词： high temper.tur. laser.cladding self-lubr.cation metal for.ing chr.mium sulphide MoS_(2)