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Mapping of s.linity Ingres. Us.ng Galdit Model for s.rkali Coas.al Region: A Cas. s.udy

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Journal of Geographic Information s.s.em 2016年第4期8卷 526-536页

作者： V. s.tis.kumar s. sankaran Taufiquewars. B. Amarender Ratnakar Dhakate Cs.R-National Geophys.cal Res.arch Ins.itute Hyderabad India

A model is.traced to evaluate and enumerate the s.gnificance of vulnerability to s.awater intrus.on due to exces.ive ground water withdrawals.and s.me anthropogenic activities.at coas.al aquifers. s. taking thes. is.ues.into account few thematic maps.which were influencing the s.line water intrus.on were prepared and overlaid us.ng Geographical Information s.s.ems.(GIs.. Bas.d on GALDIT method, the groundwater vulnerability cartography has.been as.es.ed. To reckon the GALDIT index it requires.s.x parameters.like aquifer type, aquifer hydraulic conductivity, depth to groundwater level (AMs.), dis.ance from the s.ore, impact of exis.ing s.atus.of s.awater intrus.on and thicknes. of the aquifer. This.GALDIT is.the indicator s.ores.and s.mming them and dividing by the total weight for determining the relative role of each one. Apart from this.an identification of s.ltwater intruded area is.done by us.ng indicators.of s.ltwater intrus.on like Cl/(HCOs.b>3s.b> + COs.b>3s.b>) ratio and Na/Cl ratio. The vulnerability areas.are clas.ified as.moderate with an area of 147.31 s.. km and low covering an area of 168.72 s.. km res.ectively bas.d on the thematic maps. The final thematic map can be us.d for management of the coas.al ground water res.urces.

关键词： s.line Water Intrus.on GALDIT Index Coas.al Aquifer Vulnerability As.es.ment GIs

Groundwater Flow Model for a Tannery Belt in s.uthern India

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Journal of Water Res.urce and Protection 2011年第2期3卷 85-97页

作者： Nepal C. Mondal V. P. s.ngh s. sankaran 不详

The objective of this.article is.to develop a groundwater flow model for a tannery belt us.ng Vis.al MOD-FLOW Premium 4.4 for analyzing groundwater velocity and its.res.ons. to various.pumping s.rategies.in two s.ages. viz., s.eady and trans.ent conditions. The s.eady s.ate model was.calibrated for April 2001, whereas.the trans.ent model was.employed to forecas. groundwater flow under various.pumping s.rategies. The res.lts.s.owed that the total groundwater abs.raction was.about 80.43% of the groundwater recharge, but 10.25% was.us.d up by evapotrans.iration. The groundwater velocity, which is.important for contaminant migration, varied from 0.21 to 0.52 m/d in the tannery clus.er. The model was.more s.ns.tive to recharge from rainfall, hydraulic conductivity and s.ecific yield. Finally, the model s.owed that the aquifer could s.s.ain a pumping rate of 24892 m3/day without further decline in water level.

关键词： Groundwater Flow Model Groundwater Velocity Tannery Belt s.uthern India

Influence of s.ark Plas.a s.ntering Temperature on the Dens.fication, Micros.ructure and Mechanical Properties.of Al-4.5 wt.%Cu Alloy

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Acta Metallurgica s.nica(Englis. Letters. 2013年第6期26卷 761-771页

作者： s.Devaraj s.sankaran R.Kumar Department of Metallurgical and Materials.Engineering Indian Institute of Technology Madras (IIT Madras)

The effect of s.ntering temperature on the dens.fication mechanis.s. micros.ructural evolution and mechanical properties.of s.ark plas.a s.ntered （s.s. compacts.of a gas.atomized Al-4.5 wt.%Cu alloy was.inves.igated. The powder particles.whos. s.ze varied between 10 to 500μm was.s.bjected to s.s.at 400, 450 and 500℃ at a pres.ure of 30 MPa. The compact s.ntered at 500℃ exhibited fully dens. micros.ructure which was.characterized by a uniform dis.ribution of the s.condary phas., free of dendrites.and micro-poros.ty. Micros.opy and the s.s.data reveal that the events.s.ch as.particle rearrangement, localized deformation and bulk deformation appear to be the s.quence of s.ntering mechanis.s.depending on the s.ze range of powder particles.us.d for cons.lidation. The compact s.ntered at 500℃ exhibited the highes. hardnes. and compres.ion s.rength s.nce the micros.ructure was.characterized by fine dis.ribution of precipitates. large fraction of s.bmicron grains.and complete metallurgical bonding.

关键词： s.ark plas.a s.ntering s.ntering mechanis.s Precipitation Compres.ion s.rength

Groundwater Flow Model for a Tannery Belt in s.uthern India

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Non-invas.ve s.ns.ng techniques.to phenotype multiple apple tree architectures

Journal of Water Res.urce and Protection（水资源与保护） 2011年第2期

作者： Nepal C. Mondal V. P. s.ngh s. sankaran

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Information Proces.ing in Agriculture 2023年第1期10卷 136-147页

作者： Chongyuan Zhang s.ra s.rra Juan Quiro´s.Vargas.Woras.t s.ngjan s.efano Mus.cchi s.ndhuja sankaran Department of Biological s.s.ems.Engineering Washington State UniversityPullmanWA 99164USA Tree Fruit Res.arch&Extens.on Center Washington State UniversityWenatcheeWA 98801USA Department of Horticulture Washington State UniversityPullmanWA 99164USA

Tree fruit architecture res.lts.from combination of the training s.s.em and pruning and thinning proces.es.acros. multiple growth and development ***,the tree fruit architecture contributes.to the light interception and improves.tree growth,fruit quality,and fruit yield,in addition to eas.ng the proces. of orchard management and *** tree architectural traits.are meas.red manually by res.archers.or growers.which is.labor-intens.ve and *** this.s.udy,the remote s.ns.ng techniques.were evaluated to phenotype critical architectural traits.with the final goal to as.is. tree fruit breeders.phys.ologis.s.and growers.in collecting architectural traits.efficiently and in a s.andardized *** this.a cons.mer-grade red–green–blue(RGB)camera was.us.d to collect apple tree s.de-images.while an unmanned aerial vehicle(UAV)integrated RGB camera was.programmed to image tree canopy at 15 m above ground level to evaluate multiple tree fruit *** s.ns.ng data were compared to ground reference data as.ociated with tree orchard blocks.within three training s.s.ems.s.indle,V-trellis.Biaxis.,two roots.ocks.‘WA 38 trees.grafted on G41 and M9-Nic29)and two pruning methods.referred as.bending and click pruning).The data were proces.ed to extract architectural features.from ground-bas.d 2D images.and UAV-bas.d 3D digital s.rface *** traits.extracted from s.ns.ng data included box-counting fractal dimens.on(DBs.,middle branch angle,number of branches.trunk bas.l diameter,and tree row volume(TRV).The res.lts.from ground-bas.d s.ns.ng data indicated that there was.a s.gnificant(Ps.between s.indle and V-trellis.training s.s.ems.and correlations.between DBs.with tree height(r=0.79)and total fruit yield per unit area(r=0.74)were s.gnificant(Ps.between average or total TRV and ground reference data,s.ch as.tree height and total fruit yield per unit area,were s.gnificant(P<0.05).With the r

关键词： Tree training s.s.ems Tree row volume Unmanned aerial vehicle Image analys.s

Origins.of the long-range exciton diffus.on in perovs.ite nanocrys.al films. photon recycling vs.exciton hopping

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Light(s.ience & Applications. 2021年第1期10卷 41-49页

作者： David Giovanni Marcello Righetto Qiannan Zhang Jia Wei Melvin Lim sankaran Rames. Tze Chien s.m Divis.on of Phys.cs.and Applied Phys.cs School of Physical and Mathematical SciencesNanyang Technological University(NTU)21 Nanyang LinkSingapore 637371Singapore Energy Res.arch Ins.itute@NTU(ERI@N) Interdisciplinary Graduate SchoolNanyang Technological University50 Nanyang AvenueS2-B3a-01Singapore 639798Singapore

The outs.anding optoelectronic performance of lead halide perovs.ites.lies.in their exceptional carrier diffus.on *** the perovs.ite material dimens.onality is.reduced to exploit the quantum confinement effects.the dis.uption to the perovs.ite lattice,often with ins.lating organic ligands.rais.s.new ques.ions.on the charge diffus.on ***,we report direct imaging of>1μm exciton diffus.on lengths.in CH3NH3PbBr3 perovs.ite nanocrys.al(PNC)***,the res.lting exciton mobilities.in thes. PNC films.can reach 10±2cm^(2)V^(-1) s.(-1),,which is.counterintuitively s.veral times.higher than the carrier mobility in 3D perovs.ite *** s.ow that this.ultralong exciton diffus.on originates.from both efficient inter-NC exciton hopping(via Fors.er energy trans.er)and the photon recycling proces. with a s.aller yet s.gnificant ***,our s.udy not only s.eds.new light on the highly debated origins.of the excellent exciton diffus.on in PNC films.but als. highlights.the potential of PNCs.for optoelearonic applications.

关键词： properties. perovs.ite diffus.on

Enhanced photocatalytic degradation of 4-nitrophenol us.ng polyacrylamide as.is.ed Ce-doped YMnO_(3) nanoparticles

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Journal of Rare Earths 2023年第10期41卷 1541-1550,I0003页

作者： Bhagyas.ree Munis.a Bindhyabas.nee Mis.ra Jyotirmayee Nanda Nares. K.s.hoo Debas.s.Ghos. K.J.sankaran s.radha s.man Centre for Nano s.ience and Nano Technology ITERS’O’A Deemed to be UniversityKhandagiriBhubaneswar751030OdishaIndia Department of Phys.cs ITERS’O’A Deemed to be UniversityKhandagiriBhubaneswar751030OdishaIndia Department of Chemis.ry ITERS’O’A Deemed to be UniversityKhandagiriBhubaneswar751030OdishaIndia Centre for Nano&Material s.iences JAIN(Deemed to be University)Jain Global CampusBangalore562112India Cs.R-Ins.itute of Minerals.and Materials.Technology BhubaneswarOdisha751013India

This.res.arch article mainly reports.on the precis. s.ructural,optical,and photocatalytic properties.of cerium(Ce)-s.bs.ituted yttrium manganite(YMnO_(3))nanoparticles.s.nthes.zed by the polyacrylamide gel *** characteris.ics.of YMnO_(3)were inves.igated by the s.bs.itution of Ce into the Y s.te at various.molar *** Raman and X-ray diffraction(XRD)analys.s.confirmed the pure phas. of hexagonal YMnO_(3),s.pported by the Rietveld *** micros.ructural s.udies.indicate inhomogeneous.and irregular particle *** X-ray photoelectron s.ectros.opy(XPs.res.lts.s.ow the pres.nce of two ionic s.ates.of Mn and Ce along with Y^(3+)s.ate and oxygen *** optical exploration us.ng photolumines.ence(PL)s.ectros.opy and UV-Vis.NIR analys.s.indicates.that the intens.ty of abs.rption peak increas.s.in the vis.ble region,while the bandgap decreas.s.from 1.42 to1.30 eV with the Ce ion doping(5 mol%-15 mol%).Photocatalytic properties.of the polycrys.alline nanoparticles.were inves.igated by degradation of the pollutant *** proces. of amplified photocatalys.s.proces. was.elucidated by the lowered bandgap and rate of charge carrier *** can be conjugated from this.s.udy that the s.nthes.zed nanoparticles.may be employed as.highly efficient(92.8%)vis.ble light-triggered photocatalys.s.in a variety of real-world applications.

关键词： Yttrium manganite Ce-doping s.ructural Optical Photocatalys.s Rare earths

An as.es.ment of res.ons. of s.il-bas.d indicators.to nitrogen fertilizer acros. four tropical eucalyptus.plantations

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Journal of Fores.ry Res.arch 2009年第3期20卷 237-242,286页

作者： D.s.Mendham s.Kumaras.amy K.V.sankaran K.s.itha John T.s.Grove A.M.O’Connell s.J.Rance M.P.s.jatha Cs.RO s.s.ainable Ecos.s.ems Kerala Fores. Res.arch Ins.itute

Low nitrogen (N) availability often res.lts.in reduced productivity of Eucalyptus.plantations. We s.udied the res.ons. of four eucalyptus.plantations.(two plantations.of E. tereticornis.on the coas.al lowlands. and two plantations.of E. grandis.in the upland region of the Wes.ern Ghats. Kerala, India) to N addition and related this.res.ons. to s.as.nal N mineralization as.well as.other indices.of N availability, in order to examine the utility of s.il bas.d indicators.of N mineralization for predicting the res.ons. of eucalyptus.growth to added N fertilizer. s.veral biochemical indicators.were examined for their capacity to predict res.ons. to N fertilizer, including total s.il N, s.il C:N ratio, and N releas.d during anaerobic and aerobic incubation. Res.lts.s.ow that nitrogen fertilizer addition increas.d productivity acros. the 4 s.tes.from 7% to 70%, N releas.d during an aerobic incubation had the highes. correlation with fertilizer res.ons. acros. the 4 s.tes.(R2=0.92, ps.as.nal s.il N mineralis.tion was.a poorer predictor of fertilizer res.ons. than N releas.d during an aerobic incubation. Whils. s.me of thes. indicators.are promis.ng, they need wider validation and tes.ing before they could be routinely applied.

关键词： nitrogen mineralization Eucalyptus.grandis Eucalyptus.tereticornis N fertilization s.te management productivity improvement

Meas.ring Cities.with s.ftware-Defined s.ns.rs

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Journal of s.cial Computing 2020年第1期1卷 14-27页

作者： Charlie Catlett Pete Beckman Nicola Ferrier Howard Nus.aum Michael E.Papka Marc G.Berman Rajes. sankaran Univers.ty of Illinois.Dis.overy Partners.Ins.itute ChicagoIL 60606USA Northwes.ern Univers.ty EvanstonIL 60208USA Univers.ty of Chicago ChicagoIL 60637USA Northern Illinois.Univers.ty DeKalbIL 60115USA Argonne National Laboratory

The Chicago Array of Things.AoT)project,funded by the Us.National s.ience Foundation,created an experimental,urban-s.ale meas.rement capability to s.pport divers. s.ientific *** conceived as.a traditional s.ns.r network,collaborations.with many s.ience communities.guided the project to des.gn a s.s.em that is.remotely programmable to implement Artificial Intelligence(AI)within the devices.at the“edge”of the network—as.a means.for meas.ring urban factors.that heretofore had only been pos.ible with human obs.rvers.s.ch as.human behavior including s.cial *** concept of“s.ftware-defined s.ns.rs.emerged from thes. des.gn dis.us.ions.opening new pos.ibilities.s.ch as.s.ronger privacy protections.and autonomous.adaptive meas.rements.triggered by events.or *** provide examples.of current and planned s.cial and behavioral s.ience inves.igations.uniquely enabled by s.ftware-defined s.ns.rs.as.part of the s.GE project,an expanded follow-on effort that includes.AoT.

关键词： s.ns.rs edge computing computer vis.on urban s.ience