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As.es.ment of Natural Uranium in the Ground Water around Jaduguda Uranium Mining Complex, India

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Journal of Environmental Protection 2011年第7期2卷 1002-1007页

作者： N. k. s.thy R. M. Tripathi V. N. Jha s. k. sahoo A. k. s.uk.a V. D. Puranik 不详

Ground water ecos.s.em s.rrounding the uranium proces.ing facility at Jaduguda, India has.been s.udied for natural uranium dis.ribution. Annual intak. of uranium through drink.ng water for members.of public res.ding around the uranium complex is.found to be in the range of 41.8 Bquy–1 - 44.4 Bquy–1. The intak. and inges.ion dos. is.appreciably low (–1) which is.far below the WHO recommended level of 100 us..y–1. The exces. life time radiological ris. due to uranium natural in drink.ng water is.ins.gnificant and found to be of the order of 10–6. Even the highes. concentration of uranium was.found to be 28 ug.l–1 is.away (at 1.5 to 5 k. dis.ance) from mining indus.ry and well below the acceptable limit. The ground water in the area around the uranium facility is.not affected by the mining activity. The ground water in three zones.is.s.fe and reflects.the natural dis.ribution of uranium.

关键词： Natural Uranium Inges.ion Dos. Radiological Ris.

Mark.t Drivers.in India’s.s.art Grid:Res.ons.bilities.and Roles.of s.ak.holders

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Energy Engineering 2025年第1期122卷 101-128页

作者： Abhay s.natan s.tapathy s.res. k.mar sahoo As.t Mohanty Yas.er Fouad Manzoore ElahiMohammad s.udagar Erdem Cuce Faculty of Management s.udies Sri Sri UniversityCuttack754006India Ins.itute of Power Engineering National Energy UniversityJalan Ikram-UnitenKajangSelangor43000Malaysia Centre of Res.arch Impact and Outcome Chitkara UniversityRajpura140417PunjabIndia Department of Applied Mechanical Engineering College of Applied EngineeringMuzahimiyah BranchKing Saud UniversityRiyadh11421Saudi Arabia College of Engineering Lishui UniversityLishui323000China Department of Mechanical Engineering Graphic Era(Deemed to be University)Dehradun248002UttarakhandIndia Department of Mechanical Engineering Faculty of EngineeringUniversity of MalayaKuala Lumpur50603Malaysia Department of Mechanical Engineering Faculty of Engineering and ArchitectureRecep Tayyip Erdogan UniversityZihni Derin CampusRize53100Turkey Center for Res.arch Impact&Outcome Chitkara UniversityRajpura140401PunjabIndia Univers.ty Centre for Res.arch and Development Chandigarh UniversityMohali140413PunjabIndia

The emergence of s.art grids.in India is.propelled by an intricate interaction of mark.t dynamics.regulatory s.ructures.and s.ak.holder *** s.udy analyzes.the primary factors.that are driving the wides.read us. of s.art grid technologies.and outlines.the s.ecific roles.and obligations.of different s.ak.holders.s.ch as.government entities.utility companies.technology s.ppliers.and *** activities.and regulations.are crucial in facilitating the implementation of s.art grid technology by offering financial incentives.regulatory as.is.ance,and s.rategic *** firms.have the res.ons.bility of implementing and integrating s.art grid infras.ructure,with an emphas.s.on improving the dependability of the grid,minimizing los.es.in trans.is.ion and dis.ribution,and integrating renewable energy *** companies.offer the es.ential hardware and s.ftware s.lutions.which s.imulate creativity and enhance *** actively engage in the energy ecos.s.em by participating in demand res.ons.,implementing energy s.ving meas.res.and adopting dis.ributed energy res.urces.lik. s.lar panels.and electric *** s.udy examines.the difficulties.and pos.ibilities.in India’s.s.art grid indus.ry,highlighting the importance of cooperation among s.ak.holders.to build a s.rong,effective,and environmentally friendly energy future.

关键词： s.art grid s.ak.holders s.art grid technology mark.t drivers

Inves.igation into machining performance of micros.ructurally engineered in-s.tu particle reinforced magnes.um matrix compos.te

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Journal of Magnes.um and Alloys 2023年第3期11卷 916-935页

作者： s.k.sahoo B.N.sahoo s.k.Panigrahi Department of Mechanical Engineering Indian Institute of Technology MadrasChennai 600036India Applied Magnes.um Res.arch Group Center of Excellence in Materials and Manufacturing for Futuristic MobilityIndian Institute of Technology MadrasChennai 600036India Department of Mechanical Engineering Sardar Vallabhbhai National Institute of TechnologySurat 395007India

Magnes.um and magnes.um in-s.tu compos.tes.have s.gnificant potential in the application of des.gn and manufacturing for automotive and aeros.ace indus.ries.becaus. of their high s.ecific s.rength and reduced fuel *** there are many challenges.for machining of Mg bas.d alloys.and compos.tes.becaus. of the high tendency of fire and *** challenges.can be minimized through micros.ructural *** this.pres.nt s.udy,the machining performances.of AZ91 Mg alloy and in-s.tu hybrid TiC+TiB_(2)reinforced AZ91 metal matrix compos.te was.*** effectβ-Mg_(17)Al_(12)phas.s.and grain refinement with and without in-s.tu particles.on machinability were s.udied through micros.ructural engineering via aging and friction s.ir *** end milling operation was.carried out at different cutting s.eeds.ranging from 25 mm/min to 90 mm/min under dry environment by us.ng an AlTiN-coated tungs.en carbide *** optimum cutting s.eed for machining was.found to be 75 mm/min bas.d on the s.rface roughnes. values.of all conditioned *** bas. material with dendritic micros.ructure was.found to have poor machinability in terms.of inadequate s.rface finis. and edge-burrs.*** combined effect of in-s.tu TiC+TiB_(2)particles.addition and grain refinement enhanced the machining performance of the material with s.perior s.rface finis.,negligible edge-burr formation and better tool wear *** influence of in-s.tu TiC+TiB_(2)particles.β-Mg_(17)Al_(12)phas.s.and grain refinement on machining characteris.ics.are explained bas.d on the tool wear mechanis.s.chip behavior and machining induced affected zone.

关键词： Magnes.um In-s.tu compos.te End-milling Tool wear Chip morphology

Comparative s.udy on high temperature deformation behavior and proces.ing maps.of Mg-4Zn-1RE-0.5Zr alloy with and without in-s.tu s.b-micron s.zed TiB2 reinforcement

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Journal of Magnes.um and Alloys 2022年第12期10卷 3520-3541页

作者： s.k.sahoo s.k.Panigrahi Department of Mechanical Engineering Indian Institute of Technology MadrasChennai-600036India Applied Magnes.um Res.arch Group Center of Excellence in Materials and Manufacturing for Futuristic Mobility Indian Institute of Technology MadrasChennai-600036India

Mg-4Zn-1RE-0.5Zr (ZE41) Mg alloy is.extens.vely us.d in the aeros.ace and automobile *** order to improve the applicability and performance,this.alloy was.engineered with in-s.tu Ti B2reinforcement to form Ti B2/ZE41 *** high temperature deformation behavior and manufacturability of the newly developed Ti B2/ZE41 compos.te and the parent ZE41 Mg alloy were s.udied via es.ablis.ing cons.itutive modeling of flow s.res.,deformation activation energy and proces.ing map over a temperature range of 250℃-450℃ and s.rain rate range of 0.001 s.1-10 *** predicted flow s.res. behavior of both materials.were found to be well cons.s.ent with the experimental values.A s.gnificant improvement in activation energy was.found in Ti B2/ZE41 compos.te (171.54 k.J/mol) as.compared to the ZE41 alloy (148.15 k.J/mol) due to the dis.ers.d s.rengthening of in-s.tu Ti *** proces.ing maps.were developed via dynamic material modeling.A wider work.bility domain and higher peak.efficiency (45%) were obs.rved in Ti B2/ZE41 compos.te as.compared to ZE41 alloy (41%).The Dynamic recrys.allization is.found to be the dominating deformation mechanis. for both materials.however,particle s.imulated nucleation was.found to be an additional mode of deformation in Ti B2/ZE41 *** twinning and s.res. induced crack.0}were obs.rved in both the materials.at low temperature and high s.rain rate.A narrow range of ins.ability zone is.found in the pres.nt Ti B2/ZE41 compos.te among the exis.ing publis.ed literature on Mg bas.d *** detailed micros.ructural characterization was.carried out in both work.bility and ins.ability domains.to es.ablis. the governing deformation mechanis.s.

关键词： ZE41 Mg compos.te In-s.tu TiB2 particles ZE41 Mg alloy Cons.itutive equations Proces.ing map Dynamic recrys.allization

Eins.ein Energy-Momentum Complex for a Phantom Black.Hole Metric

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Chines. Phys.cs.Letters 2015年第2期32卷 19-22页

作者： P. k. sahoo k. L. Mahanta D. Goit A. k. s.nha s. s. Xulu U. R. Das.A. Pras.d R. Pras.d Department of Mathematics Birla Institute of Technology and Science-Pilani Hyderabad Campus Hyderabad 500078 India Department of Mathematics C. V. Raman College of Engineering Bhubaneswar 752054 India Department of Phys.cs B.S. College Patna 800012 India Department of Phys.cs College of Commerce Patna 800020 India Department of Computer s.ience University of Zululand Kwa-Dlangezwa 3886 South Africa Department of Phys.cs D.N. College Patna 804452 India Department of Phys.cs L.S. College Muzaffarpur 842001 India

We calculate the energy dis.ribution as.ociated with a s.atic s.herically s.mmetric non-s.ngular phantom black.hole metric in Eins.ein＇s.pres.ription in general relativity. As.required for the Eins.ein energy-momentum complex, we perform the calculations.in quas.-Cartes.an coordinates. We als. calculate the momentum components.and obtain a zero value, as.expected from the geometry of the metric.

关键词： Eins.ein Energy-Momentum Complex for a Phantom Black.Hole Metric FRW

An optimized ion trap geometry to meas.re quadrupole s.ifts.of ^(171)Yb~＋ clock.

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Chines. Phys.cs.B 2016年第11期25卷 230-237页

作者： N Batra B k.sahoo s.De Academy of s.ientific and Innovative Res.arch CSIR-NPL Campus New Delhi India Cs.R-National Phys.cal Laboratory Dr. K. S. Krishnan Marg New Delhi 110012 India Theoretical Phys.cs.Divis.on Physical Research Laboratory Navrangpura Ahmedabad 380009 India

We propos. a new ion-trap geometry to carry out accurate meas.rements.of the quadrupole s.ifts.in the （171）Yb *** trap will minimize the quadrupole s.ift due to the harmonic component of the confining potential by an order of *** will be us.ful to reduce the uncertainties.in the clock.frequency meas.rements.of the 6s.2s.1/2）→4f（13）6s. 2F（7/2）and 6s.2s.1/2）→5d2D（3/2） trans.tions.from which we can deduce the precis. values.of the quadrupole moments.0s. of the 4f（13）6s. 2F（7/2） and 5d2D（3/2） ***,it may be able to affirm the validity of the meas.red 0 value of the4f（13）6s.2F（7/2） s.ate,for which three independent theoretical s.udies.defer almos. by one order of magnitude from the *** als. calculate 0s.us.ng the relativis.ic coupled-clus.er（RCC） *** us. thes. 0 values.to es.imate the quadrupole s.ift that can be meas.red in our propos.d ion trap experiment.

关键词： validity minimize carry clock.relativis.ic precis. deduce magnitude expectation s.atially

Determination of Curcumin on Functionalized Carbon Nano Tube Modified Electrode and Probing its.Interaction with DNA and Copper Ion

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Journal of Analys.s.and Tes.ing 2023年第2期7卷 136-146页

作者： s.sahoo A.k.s.tpati Analytical Chemis.ry Divis.on Bhabha Atomic Research CentreTrombayMumbai 400085India Homi Bhabha National Ins.itute AnushaktinagarMumbai 400094India

Voltammetry meas.rements.have been employed to inves.igate the redox behaviour of curcumin in aqueous.media us.ng functionalized carbon nanotube(FCNTs.modified glas.y carbon electrode(GCE).The electro-catalytic properties.of FCNTs.modified electrode are s.perior in comparis.n to the conventional electrode in generating the electrochemical res.ons. from *** oxidation proces. of the curcumin over the modified s.bs.rate is.found to be p H dependent and s.ows.2e^(-)and 2H^(+)proton trans.er electrochemical *** oxidation peak.is.obtained at 0.37 V and the peak.current is.found to be linear with the varying concentration of *** limit of detection(LOD)and the limit of quantification(LOQ)for the curcumin are obtained as.60 and 200 nmol/L,res.ectively us.ng the FCNTs.modified *** enhanced electrochemical res.ons. from the FCNTs.modified GCE has.been utilized in the evaluation of the chemical and biochemical behaviour of curcumin in pres.nce of trans.tion metal ions.Cu^(2+))and ds.DNA,and the obs.rvation has.been s.pported by the s.ectrochemical characteris.ics.of the interactions.

关键词： Functionalized carbon nanotube Curcumin s.uare wave voltammetry Binding cons.ant s.ectros.opy DNA

Optimization of flotation variables.for the recovery of hematite particles.from BHQ ore

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International Journal of Minerals.Metallurgy and Materials 2013年第7期20卷 605-611页

作者： s.agat s. Rath Hrus.ik.s. sahoo B. Das Cs.R-Ins.itute of Minerals.and Materials.Technology Bhubaneswar 751 013 India

The technology for beneficiation of banded iron ores.containing low iron value is.a challenging tas. due to increas.ng demand of quality iron ore in India. A flotation proces. has.been developed to treat one s.ch ore, namely banded hematite quartzite （BHQ） containing 41.8wt% Fe and 41.5wt% s.O2,by us.ng oleic acid, methyl is.butyl carbinol （MIBC）, and s.dium s.licate as.the collector, frother, and dis.ers.nt, res.ectively. The relative effects.of thes. variables.have been evaluated in half-normal plots.and Pareto charts.us.ng central compos.te rotatable des.gn. A quadratic res.ons. model has.been developed for both Fe grade and recovery and optimized within the experimental range. The optimum reagent dos.ges.are found to be as.follows. collector concentration of 243.58 g/t, dis.ers.nt concentration of 195.67 g/t, pH 8.69, and conditioning time of 4.8 min to achieve the maximum Fe grade of 64.25% with 67.33% recovery. The predictions.of the model with regard to iron grade and recovery are in good agreement with the experimental res.lts.

关键词： hematite iron ore treatment flotation metal recovery des.gn of experiments mathematical models opti-mization

Energy conditions.of the f(T,B) gravity dark.energy model with the validity of thermodynamics

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Communications.in Theoretical Phys.cs 2020年第8期72卷 109-118页

作者： s.H s.ek. V R Chirde P k.sahoo Department of Mathematics S.P.M.Science and Gilani Arts and Commerce CollegeGhatanjiYavatmalMaharashtra-445301India Department of Mathematics G.S.G.MahavidyalayaUmarkhed-445206India Department of Mathematics Birla Institute of Technology and Science-PilaniHyderabad CampusHyderabad-500078India

In this.article, the analys.s.of Ts.llis.holographic dark.energy(which turns.into holographic dark.energy for a particular choice of pos.tive non-additivity parameter δ) in modified f(T, B) gravity with the validity of thermodynamics.and energy conditions.for a homogeneous.and is.tropic FLRW Univers. has.been s.udied. The enlightenment of the field equation towards.f(T,B)=αT^m+βB^n, made pos.ible by the fact that the model is.purely accelerating,corres.onds.to q=-0.54(Mamon and Das.2017 Eur. Phys.J.C 77 49). The generalized s.cond law of thermodynamics.is.valid not only for the s.me temperature ins.de the horizon, but als. for the apparent horizon for a change in temperature. The es.ential ins.iration driving this.article is.to exhibit the applicability that the holographic dark.energy achieved from s.andard Ts.llis.holographic dark.energy and the components.acquired from f(T, B) gravity are identical for the s.ecific bounty of cons.ants. The analys.s.of energy conditions.confirms.that the weak.energy condition and the null energy condition are fulfilled throughout the expans.on, while violation of the s.rong energy condition validates.the accelerated expans.on of the *** the expans.on, the model becomes.a quintes.ence dominated model. The dominant energy condition is.not obs.rved initially when the model is.filled with genuine baryonic matter,whereas.it appears.when the model is.in the quintes.ence dominated era.

关键词： Ts.llis.holographic dark.energy f(T B)gravity energy conditions thermodynamics