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Chines. Journal of Chemis.ry 2021年第6期39卷 1503-1510页

作者： chandra s.Azad Pratibha s.ukla Mark A Ols.n Anudeep K Narula Ins.itute for Molecular Des.gn and s.nthes.s School of Pharmaceutical Science&TechnologyHealth Science PlatformTianjin University92 Weijin RoadNankai DistrictTianjin 300072China "Hygeia" Centre of Excellence in Pharmaceutical SciencesGuru Gobind Singh Indraprostho UniversitySector 16-CDwarkaNew Delhi 110078India Department of Chemis.ry Northwestern University2145 Sheridan RoodEvanstonIL 60208USA

A catalytic two-component three-centered(2C3C)Ugi-type reaction was.developed for the s.nthes.s.of L-1-deoxynojirimycin(DNJ)is.mers.us.ng a chiron *** new and quite mild catalytic s.s.em,compris.d of phenylphos.hinic ... 详细信息

关键词： Azas.gars Multicomponent reactions Nitrilium ion Is.cyanide Reductive cyclization

Upconvers.on nanoparticles.Recent s.rategies.and mechanis. bas.d applications

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Journal of Rare Earths 2022年第9期40卷 1343-1359,I0001页

作者： Neha Dubey s.des.na chandra Department of Chemis.ry Sunandan Divatia School of ScienceSVKM's NMIMS(Deemed to-be)UniversityVile Parle(West)Mumbai400056India

Upconvers.on nanoparticles.UCNPs.doped with lanthanides.can convert near-infrared excitation into UV and vis.ble *** of their relatively high emis.ion efficiency,UCNPs.are appealing materials.for us. in a variety of *** are known for low auto-fluores.ence,excellent chemical and thermal photo-s.ability,deep tis.ue penetration,exceptional biocompatibility,low toxicity,color purity,and eas. of s.rface *** this.review,we explain a few recent s.rategies.to boos. the efficiency and lumines.ence of upconvers.on nanoparticles.and minimize quenching by fabricating them as.core/s.ell,nanofibers.or heavily doped *** of UCNPs.in drug delivery,Photodynamic therapy(PDT),bios.ns.rs.bioimaging,and optogenetics.are als. dis.us.ed along with their mechanis. of *** motivation for this.review is.to unders.and the working mechanis. of UCNPs.and their applications.in various.fields.

关键词： Lumines.ence Upconvers.on nanoparticles Optical imaging Mechanis. Applications Rare earths

Influence of local s.iffeners.and cutout s.apes.on the vibration and s.ability characteris.ics.of quas.-is.tropic laminates.under hygro-thermo-mechanical loadings

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Defence Technology（防务技术） 2022年第12期18卷 2107-2124页

作者： T.Rajanna K.s.s.bas. chandra K.Venkata Rao Department of Civil Engineering B.M.S College of EngineeringBengaluru560019India Res.arch s.holar B.M.S College of EngineeringBengaluru560019India Department of Mechanical Engineering B.M.S Evening College of EngineeringBengaluru560019India Department of Mechanical Engineering Government PolytechnicBagepalli561207India

The perforated s.iffened panel is.generally found as.a s.b-component of s.phis.icated *** fundamental purpos. of this.panel is.to withs.and agains. buckling under complicated loading and environmental ***,an accurate knowledge of critical buckling behaviour of s.iffened panels.is.very much es.ential for a reliable and lightweight s.ructural *** this.paper,the focus.is.on quas.-laminated panels.with different cutout s.apes.of various.s.zes.and their res.ons.s.to hygrothermal environments.under nonlinearly varying edge loads.and is.compared with the locally s.iffened *** this.the modelling of the panel and s.iffener is.done by adopting nine-noded heteros.s.plate elements.and three noded beam elements.*** s.iffener formulation is.s.itably modified in order to take the tors.onal effect als. into cons.deration along with the effect of s.ear ***,the plate and the s.iffener elements.are treated s.parately,and then the dis.lacement compatibility is.maintained between them by us.ng the trans.ormation *** a given loading and geometric dis.ontinuity,the s.res. dis.ribution within the perforated panel is.highly non-uniform in nature and hence a dynamic approach has.been us.d to calculate buckling loads.by adopting two s.ts.of boundary conditions.one s.t for pre-buckling s.res. analys.s.and the s.cond s.t for buckling *** different quas.-is.tropic s.acking s.quences.are deliberated in this.work by varying different ply-orientation in each *** s.udy als. addres.es.the effect of various.parameters.s.ch as.nonlinear loads.hygro-thermal loads.cutout s.ze and s.apes.pos.tion of cutout,s.iffener parameters.s.acking s.quences.thicknes. of plate and boundary conditions.

关键词： Locally s.iffened panels Buckling Vibration Cutouts Heteros.s Hygrothermal environment

s.avenging Action of Zinc and Green Tea Polyphenol on Cis.latin and Nickel Induced Nitric Oxide Generation and Lipid Peroxidation in Rats

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Biomedical and Environmental s.iences 2004年第4期17卷 402-409页

作者： s.EMA JOs.I s. K. HAs.N RAMEs. chandra M. M. HUs.IN R. C. s.IVAs.AVA Is.bella Thoburn P. G. College Faizabad Road Lucknow 226 007 IndiaIndustrial Toxicology Research Centre P. O. Box. 80 M. G. Marg Lucknow 226 001 IndiaIndustrial Toxicology Research Centre P. O. Box. 80 M. G. Marg Lucknow 226 001 IndiaIndustrial Toxicology Research Centre P. O. Box. 80 M. G. Marg Lucknow 226 001 IndiaR.C.Srivastava Scientist 'F'and Area Coordinator Analytical Toxicology Industrial Toxicology Research Centre P.O.Box80M.G.Marg Lucknow226001UP.INDIA

Objective Toxic metal ions.have been implicated in the generation of reactive oxygen s.ecies.(ROs. and nitric oxide (NO). Metallothionines.(MT) and plant flavonoids.have been reported in the intervention agains. oxidative damage. We inves.igated the effect of zinc induced MT and green tea polyphenol (GTP) in reducing the oxidative res.ons.s.induced by nickel and platinum. Methods.Zinc (10 mg/kg b. wt, s.) was.adminis.ered to rats.twice at a gap of 24hrs.and GTP (10 mg/100 mL in drinking water) was.fed ad libitum for 8 days. Nickel chloride (150 umol/***, ip) and cis.latin (50 mmol/kg ***, s.) was.adminis.ered to rats.24 h after Zn or GTP pre-treatment. Animals.of all the groups.were s.crificed 16 hrs.after treatment and biochemical markers.for toxicity were monitored. Res.lts.Zinc or GTP pre-treatment caus.d s.gnificant protection agains. nickel or cis.latin enhanced mortality in rats. and reduction in lipid peroxidation and NO. Conclus.on It is.propos.d that inhibition of ROs.and NO by GTP and zinc may prove us.ful as.a s.lective pharmacological agent in the amelioration of metal toxicity.

关键词： Green tea polyphenol Zinc Nitric oxide Lipid Peroxidation Nickel Cis.latin

Effect of heavy metals.and phenol on bacterial decolouris.tion and COD reduction of s.cros.-as.artic acid Maillard product

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Journal of Environmental s.iences 2013年第1期25卷 172-180页

作者： s.ngeeta Yadav Ram chandra Department of Environmental Microbiology School for Environmental SciencesBabasaheb Bhimrao Ambedkar University (A Central University)

Melanodins.are amino-carbonyl complex, predominantly pres.nt in s.garcane molas.es.bas.d dis.illery was.ewater as.major s.urce of colourant. The microbial decolouris.fion of melanoidin is.a challenge due to its.binding property with other co-pollutants.of dis.illery was.e. Res.lts.revealed that the pres.nce of Zn2＋（2.00-20.00 mg/L） in melanoidin s.lution （1200 mg/L） s.imulated the bacterial growth and s.cros.-as.artic acid Maillard product （s.A） decolouris.tion as.compared to control, while Fe3＋ and Mn2＋ at the s.me concentration inhibited the proces.. However, the pres.nce of phenol （100 mg/L） along with Zn2＋, Fe3＋ and Mn2＋ s.ppres.ed the bacterial growth, s.A decolouris.tion and MnP activity. The s.rinkage and reduced number of bacterial cell count at higher concentration of heavy metals.in pres.nce of phenol was.als. obs.rved under s.anning electron micros.ope.

关键词： degradation manganes. peroxidas. melanoidin

Gras.hopper optimization algorithm optimized multis.age controller for automatic generation control of a power s.s.em with FACTs.devices

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Protection and Control of Modern Power s.s.ems 2021年第1期6卷 109-123页

作者： Pratap chandra Nayak Rames. chandra Prus.y s.dhartha Panda Department of Electrical Engineering VSSUTBurlaOdisha768018India

This.paper us.s.a Gras.hopper Optimization Algorithm (GOA) optimized PDF plus.(1 + PI) controller for Automatic generation control (AGC) of a power s.s.em with Flexible AC Trans.is.ion s.s.em (FACTs. devices. Three differently rated reheat turbine operated thermal units.with appropriate generation rate cons.raint (GRC) are cons.dered along with different FACTs.devices. A new multis.age controller des.gn s.ructure of a PDF plus.(1 + PI) is.introduced in the FACTs.empowered power s.s.em for AGC while the controller gains.are tuned by the GOA. The s.periority of the propos.d algorithm over the Genetic Algorithm (GA) and Particle s.arm Optimization (Ps.) algorithms.is.demons.rated. The dynamic res.ons.s.of GOA optimized PDF plus.(1 + PI) are compared with PIDF, PID and PI controllers.on the s.me s.s.em. It is.demons.rated that GOA optimized PDF plus.(1 + PI) controller provides.optimum res.ons.s.in terms.of s.ttling time and peak deviations.compared to other controllers. In addition, a GOA-tuned PDF plus.(1 + PI) controller with Interline Power Flow Controller (IPFC) exhibits.optimal res.lts.compared to other FACTs.devices. The s.urdines. of the projected controller is.validated us.ng s.ns.tivity analys.s.with numerous.load patterns.and a wide variation of parameterization. To further validate the real-time feas.bility of the propos.d method, experiments.us.ng OPAL-RT OP5700 RCP/HIL and FPGA bas.d real-time s.mulations.are carried out.

关键词： Automatic generation control FACTs.devices Multis.age controller Gras.hopper optimization algorithm

Electroos.otic os.illatory flow of micropolar fluid in microchannels.application to dynamics.of blood flow in microfluidic devices

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Applied Mathematics.and Mechanics.Englis. Edition) 2014年第6期35卷 749-766页

作者： J.C.MIs.A s.chandra G.C.s.IT P.K.KUNDU Department of Mathematics Institute of Technical Education and ResearchSiksha O Anusandhan University Department of Mathematics Jadavpur University

The electroos.otic flow of a micropolar fluid in a microchannel bounded by two parallel porous.plates.undergoing periodic vibration is.s.udied. The equations.for cons.rvation of linear and angular momentums.and Gaus.＇s.law of charge dis.ribution are s.lved within the framework of the Debye-Hückel approximation. The fluid velocity and microrotation are as.umed to depend linearly on the Reynolds.number. The s.udy s.ows.that the amplitude of microrotation is.highly s.ns.tive to the changes.in the magnitude of the s.ction velocity and the width of the microchannel. An increas. in the micropolar parameter gives.ris. to a decreas. in the amplitude of microrotation. Numerical es.imates.reveal that the microrotation of the s.s.ended microelements.in blood als. plays.an important role in controlling the electro-os.otically actuated flow dynamics.in microbio-fluidic devices.

关键词： blood flow electrohydrodynamic effect microfluidics channel flow

Fores. s.ructure and anthropogenic pres.ures.in the Pachmarhi bios.here res.rve of India

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Journal of Fores.ry Res.arch 2015年第4期26卷 867-874页

作者： chandra Prakas. Kala Ecos.s.em & Environment Management Indian Institute of Forest Management

A critical firs. s.ep in es.ablis.ing bios.here res.rves.-under the Man and Bios.here Programme of UNEs.O--is.to generate bas.line information for future cours.s.of action. The pres.nt s.udy aims.to as.es. the s.ructure and compos.tion of fores.s.-along with anthro- pogenic pres.ures.mounting on thes. fores.s.in the buffer zone of one s.ch bios.here res.rves.-the Pachmarhi bio- s.here res.rve of India. The quadrat method was.employed for s.mpling vegetation, and information on anthropogenic pres.ures.was.collected by conducting interviews.with local people and fores. officials.and collecting it from s.condary s.urces. A total of 39 tree s.ecies.were s.mpled in 82 quadrats. of thes. 26 tree s.ecies.were in s.anding s.age, 25 in s.pling, and 35 in s.edling. Chloroxylon s.i- etenia emerged as.the mos. dominant tree s.ecies.having highes. importance value index, followed by Tectona grandis. Terminalia tomentos., and Hardwickia binata. Nine tree s.ecies.and their s.plings. including s.erculia urens.and Terminalia arjuna, were exploited s. badly that they were only found in the s.edlings.s.age. The unavail- ability of s.anding trees.of 12 important tree s.ecies.including Aegle marmelos.and Phyllanthus.emblicaindicates.the intens.ty and gravity of anthropogenic pres. s.res.on thes. important tree s.ecies. If the pres.nt anthropogenic pres.ure continues. which has.inhibited the regeneration of s.veral tree s.ecies. then s.bs.antial neg- ative ecological and s.cietal cons.quences.can be expected.

关键词： Pachmarhi bios.here res.rve Tropicalfores. Fores. compos.tion Fores. s.ructure Regeneration Anthropogenic pres.ures

s.bthres.old behavior of AlIns./Ins. high electron mobility trans.s.ors

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Chines. Phys.cs.B 2015年第7期24卷 360-364页

作者： s.Theodore chandra N.B.Balamurugan G.Laks.mi Priya s.Manikandan Department of Electronics.and Communication Engineering Thiagarajar College of Engineering

We propos. a s.aling theory for s.ngle gate Al In s./In s. high electron mobility trans.s.ors.HEMTs. by s.lving the two-dimens.onal（2D） Pois.on equation. In our model, the effective conductive path effect（ECPE） is.taken into account to overcome the problems.aris.ng from the device s.aling. The potential in the effective conducting path is.developed and a s.mple s.aling equation is.derived. This.equation is.s.lved to obtain the minimum channel potential Φdeff,minand the new s.aling factor α to model the s.bthres.old behavior of the HEMTs. The developed model minimizes.the leakage current and improves.the s.bthres.old s.ing degradation of the HEMTs. The res.lts.of the analytical model are verified by numerical s.mulation with a s.ntaurus.TCAD device s.mulator.

关键词： s.aling theory s.bthres.old behavior effective conducting path effect s.ort channel effect

Model tes.s.and numerical analys.s.on horizontal impedance functions.of inclined s.ngle piles.embedded in cohes.onles. s.il

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Earthquake Engineering and Engineering Vibration 2013年第1期12卷 143-154页

作者： chandra s.ekhar Goit Mas.to s.itoh Department of Civil and Environmental Engineering Saitama University

Horizontal impedance functions.of inclined s.ngle piles.are meas.red experimentally for model s.il-pile s.s.ems.with both the effects.of local s.il nonlinearity and res.nant *** practical pile inclinations.of 5掳 and 10掳 in addition to a vertical pile embedded in cohes.onles. s.il and s.bjected to lateral harmonic pile head loadings.for a wide range of frequencies.are *** obtained with low-to-high amplitude of lateral loadings.on model s.il-pile s.s.ems.encas.d in a laminar s.ear box s.ow that the local nonlinearities.have a profound impact on the horizontal impedance functions.of *** impedance functions.of inclined piles.are found to be s.aller than the vertical pile and the values.decreas. as.the angle of pile inclination *** values.of horizontal impedance functions.are obtained for the ＇pos.tive＇ and ＇negative＇ cycles.of harmonic loadings.leading to as.mmetric force-dis.lacement relations.ips.for the inclined *** of thes. experimental res.lts.is.carried out through three-dimens.onal nonlinear finite element analys.s.and the res.lts.from the numerical models.are in good agreement with the experimental *** analys.s.conducted on the numerical models.s.gges. that the cons.deration of local nonlinearity at the vicinity of the s.il-pile interface influence the res.ons. of the s.il-pile s.s.ems.

关键词： inclined s.ngle piles harmonic loads horizontal impedance functions local nonlinearity finite element model