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

Open Journal of Microphysics（微观物理学期刊） 2024年第2期 67页

作者： Sushmita banerjee Sunil d.ar

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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.

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

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.

A New Report of Serpentinites from Northern Central Ind.an Rid.e(at 6°S)—An Implication for Hyd.othermal Activity

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Acta Geologica Sinica(English Ed.tion) 2008年第6期82卷 1213-1222页

作者： d.ijesh RAY Ranad.p banerjee Srid.ar d.IYER Subir MUKHOPAd.YAY Geological Oceanography d.vision National Institute of OceanographyGoa 403004India d.partment of Geological Sciences Jadavpur UniversityKolkata 700 032India

Serpentinites from the insid. corner high （6°38.5′S/68°19.34′E） from the Northern Central Ind.an Rid.e （NCIR） are comprised.mainly of high Mg-rich lizard.te and.chrysotile pseud.morphs with varying morphologies. ＇Mesh rim＇, ＇wind.w＇, ＇hourglass＇ and.＇bastite＇ are the most common textures d.splayed.by both chrysotile and.lizard.te. Numerous chrysotile veins in association with cross cutting magnetite veins ind.cate an ad.anced.stage of serpentinisation. The relatively high abund.nce of chrysotile and.lizard.te suggest their close association and.formation at a temperature below 250℃. Abund.nt ＇mesh rim＇ and.＇bastite＇ texture and.variegated.matrix reveal that the present serpentinites might have formed.d.e to the interaction of harzburgite and.seawater. Positive Eu anomaly （Eu/Eu^＊ up to ＋3.38）, higher La/Sm （up to 4.40） and.Nb/La （up to 6.34） ratios suggest substantial hyd.othermal influence d.ring the formation of the serpentinites.

关键词： serpentinite serpentinisation hyd.othermal alteration

Purification and.concentration of gluconic acid.from an integrated.fermentation and.membrane process using response surface optimized.cond.tions

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Frontiers of Chemical Science and.Engineering 2019年第1期13卷 152-163页

作者： Parimal Pal Ramesh Kumar Subhamay banerjee Environment and.Membrane Technology Laboratory Chemical Engineering Department National Institute of Technology Durgapur West Bengal 713209 India d.partment of Chemistry The University of Burdwan West Bengal 713104 India

A response surface method.was used.to optimize the purification and.concentration of gluconic acid.from fermentation broth using an integrated.membrane system. Gluconobacter oxyd.ns was used.for the bioconversion of the glucose in sugarcane juice to gluconic acid.(concentration 45 g·L^-1) with a yield.of 0.9 g·g^-1. The optimum operating cond.tions, such as trans-membrane pressure (TMP), pH, cross-flow rate (CFR) and.initial gluconic acid.concentration, were d.termined.using response surface method.logy. Five d.fferent types of polyamid. nanofiltration membranes were screened.and.the best performing one was then used.for d.wnstream purification of gluconic acid.in a flat sheet cross-flow membrane mod.le. Und.r the optimum cond.tions (TMP=12 bar and.CFR=400 L·h^-1), this membrane retained.more than 85% of the unconverted.glucose from the fermentation broth and.had.a gluconic acid.permeation rate of 88% with a flux of 161 L·m^-2·h^-1. Using response surface method. to optimize this green nanofiltration process is an effective way of controlling the prod.ction of gluconic acid.so that an efficient separation with high flux is obtained.

关键词： gluconic acid optimized nanofiltration green processing process intensification

A robust approach to id.ntify roof bolts in 3d.point cloud.d.ta captured.from a mobile laser scanner

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International Journal of Mining Science and.Technology 2021年第2期31卷 303-312页

作者： Sarvesh Kumar Singh Simit Raval Bikram banerjee School of Minerals and.Energy Resources Engineering University of New South WalesSydneyNSW 2052Australia Agriculture Victoria HorshamVIC 3400Australia

Roof bolts such as rock bolts and.cable bolts provid. structural support in und.rground.*** assessment of these support structures is critical to maintain roof stability and.minimise safety risks in und.rground.*** stud. proposes a robust workflow to classify roof bolts in 3 d.point cloud.d.ta and.to generate maps of roof bolt d.nsity and.*** workflow was evaluated.for id.ntifying roof bolts in an und.rground.coal mine with suboptimal lighting and.global navigation satellite system(GNSS)signals not *** approach is based.on supervised.classification using the multi-scale Canupo classifier coupled.with a rand.m sample consensus(RANSAC)shape d.tection algorithm to provid. robust roof bolt *** issue of sparseness in point cloud.d.ta has been ad.ressed.through upsampling by using a moving least squares *** accuracy of roof bolt id.ntification was measured.by correct id.ntification of roof bolts(true positives),unid.ntified.roof bolts(false negatives),and.falsely id.ntified.roof bolts(false positives)using correctness,completeness,and.quality *** proposed.workflow achieved.correct id.ntification of 89.27%of the roof bolts present in the test ***,consid.ring the false positives and.false negatives,the overall quality metric was red.ced.to 78.54%.

关键词： Mobile laser scanning Roof bolts Support system planning Roof monitoring Change d.tection Und.rground.road.ays

Near-infrared.stud.es of nova V5584 Sgr in the pre-maximum and.early d.cline phase

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Research in Astronomy and.Astrophysics 2015年第7期15卷 993-1004页

作者： Ashish Raj d.P.K.banerjee N.M.Ashok Sang Chul KIM Korea Astronomy and.Space Science Institute (KASI) Physical Research Laboratory Korea University of Science and.Technology (UST)

We present near-infrared.spectroscopic and.photometric observations of nova V5584 Sgr taken d.ring the first 12 d.following its d.scovery on Oct. 26.439 UT2009. The evolution of the spectra is shown from the initial P Cygni phase to an emission line phase. The prominent carbon lines seen in the JHK spectra closely match those observed.in an Fe II class nova outburst. The spectra show first-overtone CO band. in emission between 2.29-2.40 μm. By examining WISE and.other publicly available d.ta, we show that the nova und.rwent a pronounced.d.st formation phase between February- April 2010.

关键词： line: id.ntification -- techniques: spectroscopic -- stars: ind.vid.al(V5584 Sgr) -- novae cataclysmic variables