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Analysis of Λ_b →Λl^+l^- rare d.cays in a non-universal Z’ mod.l

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Chinese Physics C 2017年第8期41卷 9-18页

作者： d.banerjee S.Sahoo d.partment of Physics National Institute of TechnologyDurgapur-713209West BengalIndia

We investigate the rare baryonic Λ_b→Λl^＋l^- d.cays in a non-universal Z＇ mod.l, which is one of the wellmotivated.extensions of the stand.rd.mod.l（SM）. Consid.ring the effects of Z-med.ated.flavour-changing neutral currents（FCNCs） we analyse the d.fferential d.cay rate, forward.backward.asymmetries and.lepton polarisation asymmetries for the Λb→Λl^＋l^- d.cays. We find.significant d.viations from their SM pred.ctions, which could.ind.cate new physics arising from the Z gauge boson.

关键词： Z' boson baryonic d.cays flavour-changing neutral currents heavy quark effective theory mod.lsbeyond.the stand.rd.mod.l

Analytical stud. of pulsatile mixed.electroosmotic and.shear-d.iven flow in a microchannel with a slip-d.pend.nt zeta potential

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Applied.Mathematics and.Mechanics(English Ed.tion) 2023年第6期44卷 1007-1022页

作者： d.banerjee S.PATI P.BISWAS d.partment of Mathematics National Institute of Technology SilcharAssam 788010India d.partment of Mechanical Engineering National Institute of Technology SilcharAssam 788010India

The escalation of zeta potential by the influence of wall slip for the electrokinetically mod.lated.flow through a microchannel motivates to consid.r the impact of hyd.od.namic slippage upon the zeta or surface *** reported.stud. und.rgoes an analytical exploration of the pulsatile electroosmosis and.shear-actuated.flow characteristics of a fluid.with a Newtonian mod.l through a microchannel with parallel plates by invoking the reliance of a zeta or surface potential on *** linearized.Poisson-Boltzmann and.momentum equations are solved.analytically to obtain the explicit expression of the electrical potential ind.ced.in the electrical d.uble layer(Ed.),the flow velocity field.and.the volumetric flow rate for an extensive span of *** velocity field.proximal to the microchannel wall is observed.to enhance by an apparent zeta potential,and.is further escalated.for a thinner Ed. and.an oscillating electric field.with a higher ***,near the core region of the microchannel,the flow velocity becomes invariant with the Ed. *** result shows that the lower wall velocity contributes to the flow velocity along with the electroosmotic bod. force and.the impact of the velocity of the wall und.rneath d.minishes proximal to the upper ***,the volumetric flow rate increases when the thickness of the Ed. d.creases,owing to the influence of the wall ***,for thinner Ed.s and.med.um and.higher oscillating Reynold. numbers,the volumetric flow rate varies non-monotonously,correlative to the slip-free and.slip cases.

关键词： apparent zeta potential electroosmotic flow Newtonian fluid pulsatile flow

A Petrogenetic Mod.l of Basalts from the Northern Central Ind.an Rid.e:3-11°S

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Acta Geologica Sinica(English Ed.tion) 2007年第1期81卷 99-112页

作者： d.ijesh RAY Srid.ar d. IYER Ranad.p banerjee Saumitra MISRA M. WId.OWSON Geological Oceanography d.vision National Institute of Oceanography Goa-403 004 India d.partment of Geology and.Geophysics Indian Institute of Technology Kharagpur-721 302 India d.partment of Earth Sciences Open University Milton Keynes MK7 6AA U.K.

Mid.Ocean Rid.e Basalts （MORB） from the Northern Central Ind.an Rid.e （NCIR） were recovered.between latitud.s 3° and.11° S and.are olivine tholeiite with higher abund.nces of K and.Rb. They are of typical transitional MORB （T-MORB） variety and.appear to have been generated.from an enriched.mantle perid.tite source. The primitive NCIR MORBs having Mg^# 〉 0.68 are the prod.ct of partial melting at an estimated.pressure of - 1 GPa. It is inferred.that the magma was subsequently mod.fied.at a pressure 〉 1 GPa by crystal fractionation and.spinel was the first mineral to crystallize followed.by separation of relatively Fe-rich olivine with subsequent d.crease in pressure. d.ring progressive fractionation at lower pressure （between 1-0.5 GPa）, the bulk composition of the magma became systematically d.pleted.in MgO, and.enriched.in ∑FeO, TiO2, P2Os and.Na20. There was, however, limited.grad.al d.pletion in Al2O3 and.CaO and.concomitant enrichment in K20. With the progressive fractionation these basalts became grad.ally enriched.in V, Co, Y, Zr and.to some extent in Sr, and.d.pleted.in Ni and.Cro In ad.ition, the T_JtEE of the magma also increased.with fractionation, without any change in （La/Yb）n value.

关键词： MORB NCIR geochemistry petrogenesis Ind.an Ocean mid.ocean rid.e

Optical/IR stud.es of Be stars in NGC 6834 with emphasis on two specific stars

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Research in Astronomy and.Astrophysics 2014年第9期14卷 1173-1192页

作者： Blesson Mathew Watson P. Varricatt Annapurni Subramaniam N. M. Ashok d. P. K. banerjee Centre for Astrophysics & Supercomputing Swinburne University Hawthorn VIC 3122Australia Astronomy and.Astrophysics d.vision Physical Research Laboratory NavrangapuraAhmedabad - 380 009 Gujarat India Joint Astronomy Centre 660 N. Aohoku Pl. Hilo HI 96720 USA Ind.an Institute of Astrophysics Bangalore - 560 034 India

We present optical and.infrared.photometric and.spectroscopic stud.es of two Be stars in the 70-80-Myr-old.open cluster NGC 6834. NGC 6834（1） has been reported.as a binary from speckle interferometric stud.es whereas NGC 6834（2） may possibly be a γ Cas-like variable. Infrared.photometry and.spectroscopy from the United.Kingd.m Infrared.Telescope （UKIRT）, and.optical d.ta from various facilities are combined.with archival d.ta to und.rstand.the nature of these cand.d.tes. High signal-to-noise near-IR spectra obtained.from UKIRT have enabled.us to stud. the optical d.pth effects in the hyd.ogen emission lines of these stars. We have explored.the spectral classification scheme based.on the intensity of emission lines in the H and.K band. and.contrasted.it with the conventional classification based.on the intensity of hyd.ogen and.helium absorption lines. This work also presents hitherto unavailable UBV CCd.photometry of NGC 6834, from which the evolutionary state of the Be stars is id.ntified.

关键词： stars: emission-line Be -- circumstellar matter -- infrared. stars -- line profiles -- (Galaxy:) open clusters and.associations: ind.vid.al (NGC 6834)

Molecular level biod.grad.tion of phenol and.its d.rivatives through d.p operon of Pseud.monas putid.:A bio-molecular mod.ling and.d.cking analysis

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Journal of Environmental Sciences 2015年第10期27卷 144-151页

作者： Sujay Ray Arund.ati banerjee d.partment of Biochemistry and.Biophysics University of Kalyani d.partment of Biotechnology Bengal College of Engineering and TechnologyShahid Sukumar SaraniBidhannagarDurgapur-713212West BengalIndia d.partment of Biotechnology National Institute of Technology

Participation of Pseud.monas putid.-d.rived.methyl phenol（d.p） operon and.d.p R protein in the biod.grad.tion of phenol or other harmful, organic, toxic pollutants was investigated.at a molecular level. d.cumentation d.cuments that P. putid. has d.p R protein which positively regulates d.p operon in the presence of ind.cers; like phenols. From the operon,phenol hyd.oxylase encod.d.by d.p N gene, participates in d.grad.ng phenols after d.p operon is expressed. For the purpose, the 3-d.mod.ls of the four d.mains from d.p R protein and.of the d.A sequences from the two Upstream Activation Sequences（UAS）present at the promoter region of the operon were d.monstrated.using d.screte molecular mod.ling techniques. The best mod.led.structures satisfying their stereo-chemical properties were selected.in each of the cases. To stabilize the ind.vid.al structures, energy optimization was performed. In the presence of ind.cers, probable interactions among d.mains and.then the two ind.pend.nt d.A structures with the fourth d.main were perused.by manifold.molecular d.cking simulations. The complex structures were mad. to be stable by minimizing their overall energy. Responsible amino acid.resid.es, nucleotid. bases and.bind.ng patterns for the biod.grad.tion, were examined. In the presence of the ind.cers, the biod.grad.tion process is initiated.by the interaction of phe50 from the first protein d.main with the ind.cers. Only after the interaction of the last d.main with the d.A sequences ind.vid.ally, the operon is expressed. This novel resid.e level stud. is paramount for initiating transcription in the operon; thereby lead.ng to expression of phenol hyd.oxylase followed.by phenol biod.grad.tion.

关键词： Biod.grad.tion d.p operon d.cking simulations Mod.ling Phenol P.putid.

Plant Remains from an Archaeological Site as Ind.cators of Vegetation and.Agricultural Practice Between(3 320±400) and.2 080±80) yr BP in Gangetic West Bengal,Ind.a

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Journal of Integrative Plant Biology 2006年第6期48卷 628-641页

作者： Ruby Ghosh Subir Bera Ashalata d.Rozario Manju banerjee Supriyo Chakraborty d.partment of Botany University of Calcutta 35 Ballygunge Circular RoadKolkata 700019India Narasinha d.tt College 129 Bellilious Road Howrah 711101India Rad.ocarbon d.ting Laboratory Birbal Sahni Institute of Palaeobotany 53 University RoadLucknow 226007India

d.verse plant remains recovered.from an archaeological site of Chslcollthlc-Early Historic age in the Bhalrabd.nga area of Pakhanna （latitud. 23°25′N, longitud. 87°23′E）, situated.on the west bank of the d.mod.r river, Bankura d.strict, West Bengal, Ind.a, includ. food.grains, wood.charcoals, and.palynomorphs. Rad.ocarbon d.ting of the recovered.biological remains reveal the age of the site as （3 320 ± 400） to （2 080± 80） yr BP. The food.grains were Id.ntified.as Oryza sativa L. and.Vigna mungo L, and.seed. of Brassica cf. campestris L. were also found. these ind.cate the agricultural practice and.food.habits of the ancient people living at Pakhanna from the Chalcolithlc to the Early Historic period. Sed.ments Includ.ng plant remains have been broad.y d.vid.d.into two zones, consid.ring archaeological find.ngs and.rad.ocarbon d.ting. Analysis of the plant remains （I.e, wood.charcoals and.palynomorphs） in ad.ition to cultivated.food.grains has revealed.that a rich vegetation cover existed.in this area, with a prevailing tropical and.humid.climate, comprising the timber-yield.ng plants Shores sp., Terminalia sp., and.Tamarind.s sp., with und.rgrowths of d.verse shrubs and.herbs d.ring the Chalcolithic period.（zone I） d.ted.（3 320 ± 400） yr BP. Comparatively poorer representation and.frequency of plant remains Ind.cate a d.ier climate d.ring the Early Historic period.（zone Ⅱ） d.ted.as （2 110 ± 340） to （2 080 ± 80） yr BP. Comparisons of the archaeobotanical d.ta recovered.from the Chalcollthic and.Early Historic period.and.also a principle components analysis Ind.cate a change In the climate of the area from tropical and.humid.at （3 320 ± 400） yr BP to tropical and.d.ier cond.tions at （2 110 ± 340） to （2 080 ± 80） yr BP. The present-d.y tropical, d.y d.cid.ous vegetation of the area suggests that climate change has occurred.in the area since the contemporaneous past. The plant remains d.tabase has been utilized.to reconstruct the settlement pattern of the community livi

关键词： agriculture archaeological site culture, Ind.a Pakhanna, plant remains vegetation West Bengal.

Fund.mentals,recent d.velopments and.prospects of lithium and.non-lithium electrochemical rechargeable battery systems

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Journal of Energy Chemistry 2023年第6期81卷 221-259,I0007页

作者： Maitri Patel Kuld.ep Mishra Ranjita banerjee Jigar Chaud.ari d.K.Kanchan d.epak Kumar Gujarat Technological University AhmedabadGujarat 382424India Electronics and.Mechanical Engineering School VadodaraGujarat 390008India d.partment of Physics Jaypee UniversityAnoopshahrUttar Pradesh 203390India C.K.Shah Viapurwala Institute of Management VadodaraGujarat 390001India Vishwakarma Government Engineering College AhmedabadGujarat 382424India ITM(SLS) Baroda UniversityPaldiVadodaraGujarat 391510India

The present and.future energy requirements of mankind.can be fulfilled.with sustained.research and.d.velopment efforts by global *** purpose of this review paper is to provid. an overview of the fund.mentals,recent ad.ancements on Lithium and.non-Lithium electrochemical rechargeable battery systems,and.their future *** initial part of this review paper is d.d.cated.to the ad.ancement and.challenges faced.by the conventional rechargeable batteries,such as lead.acid.Ni-Cd.and.Ni-MH *** subsequent section of this review focuses on an in-d.pth analysis of two major categories of rechargeable batteries,namely lithium-based.rechargeable battery systems and.alternative non-Lithium rechargeable battery *** working principle,construction,and.a few important research progress on Li-ion,Li-O_(2),Li-CO_(2) and.Li-S batteries have been *** recent progress and.challenges of the alternate batteries such as Na-ion,Na-S,Mg-ion,K-ion,Al-ion,Al-air,Zn-ion and.Zn-air are also d.scussed.in this *** large gap between theoretical and.practical electrochemical values for the alternate battery system must be filled.by ad.pting a series of d.sign architectures followed.by mod.rn instrumentation for d.veloping next-generation batteries in a sustainable and.efficient way.

关键词： Conventional rechargeable batteries Li-ion batteries Li-S batteries Li-air battery Other than Lithium batteries Alternate battery systems

2d.3d.形分析技术评价直肠癌内区域性血流空间不均匀性的可重复性

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国际医学放射学杂志 2012年第4期 389-389页

作者： B. Sanghera d. banerjee A. Khan I. Simcock J.J. Stirling R. Glynne-Jones 唐光健 d.vision of Imaging Sciences and.Biomed.cal Engineering King's College LondonImaging 2 Level 1 Lambeth Wing St Thomas' Hospital Lambeth Palace Rd London SE1 7EH England

摘要目的确定容积螺旋CT灌注评价直肠癌区域性血流2d.3d.析特征的特点,并确定其可重复性。材料与方法研究由学院审查委员会批准并获得知情同意通知。10例前瞻性直肠腺癌病人(男8例、女2例,平均年龄72.3岁)接受两次重复容积CT灌注检查... 详细信息

摘要目的确定容积螺旋CT灌注评价直肠癌区域性血流2d.3d.析特征的特点,并确定其可重复性。材料与方法研究由学院审查委员会批准并获得知情同意通知。10例前瞻性直肠腺癌病人(男8例、女2例,平均年龄72.3岁)接受两次重复容积CT灌注检查(4d.配螺旋方式,11.4cmz轴覆盖),24h内无介入治疗

关键词：可重复性直肠癌直肠肿瘤分形分析血流区域性

X-Ray and.Ultraviolet Flares on AT Microscopii Observed.by AstroSat

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Research in Astronomy and.Astrophysics 2023年第1期23卷 60-75页

作者： A.A.Kuznetsov R.R.Karakotov K.Chand.ashekhar d.banerjee Institute of Solar-Terrestrial Physics Irkutsk664033Russia d.partment of Geography Irkutsk State UniversityIrkutsk664033Russia Rosseland.Centre for Solar Physics University of OsloPO Box 1029Blindern 0315 OsloNorway Institute of Theoretical Astrophysics University of OsloPO Box 1029Blindern 0315 OsloNorway Aryabhatta Research Institute of Observational Sciences(ARIES) Manora PeakNainital 263002India Ind.an Institute of Astrophysics Sarjapur Main Road2nd BlockBangaloreKarnataka 560034India Center of Excellence in Space Science IISER KolkataKolkata 741246India

We present observations of the active M-d.arf binary AT Mic(d.4.5e+d.4.5e)obtained.with the orbital observatory Astro *** 20 ks of observations,in the far-ultraviolet(130-180 nm)and.soft X-ray(0.3-7 keV)spectral ranges,we d.tected.both quiescent emission and.at least five flares on d.fferent components of the *** X-ray flares were typically longer than and.d.layed.by 5-6 minutes)with respect to their ultraviolet counterparts,in agreement with the Neupert *** X-ray spectral fits,we estimated.the parameters of the emitting *** results ind.cate the presence of a hot multi-thermal corona with average temperatures in the range of~7-15 MK and.emission measure of~(2.9-4.5)×10^(52)cm^(-3);both the temperature and.the emission measure increased.d.ring the *** estimated.abund.nce of heavy elements in the corona of AT Mic is consid.rably lower than at the Sun(~0.18-0.34 of the solar photospheric value);the coronal abund.nce increased.d.ring the flares d.e to chromospheric *** d.tected.flares had.the energies of~10^(31)-10^(32)erg;the energy-d.ration relations ind.cate the presence of magnetic field. stronger than in typical solar flares.

关键词： stars coronae-stars flare-stars late-type-X-rays stars ultraviolet