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The Electrocatalytic Activity of Bare p.rolytic Grap.ite and Single Wall Carbon Nanotube Modified Glassy Carbon Sensors Is Same for the Quantification of Bisop.olol Fumarate

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American Journal of Analytical Chemistry 2012年第2期3卷 106-112页

作者： Rajendra N. Goyal Sanghamitra Chatterjee sudhanshu p. singh Anoop.Raj singh Rana Himanshu Chasta Dep.rtment of Chemistry Indian Institute of Technology Roorkee Roorkee India

A comp.rison of voltammetric behavior of bisop.olol fumarate (BF) at edge and basal p.ane p.rolytic grap.ite electrodes (Ep.GE/Bp.GE) has been made with single wall carbon nanotube modified glassy carbon. The electrochemical p.op.rties are investigated exercising the cyclic voltammetry and square wave voltammetry (SWV). Enhanced p.ak current associated with bisop.olol fumarate oxidation at Ep.GE is due to its better electron transfer p.op.rty. Quantification of bisop.olol fumarate was carried out at p. 7.2 at both the p.rolytic grap.ite electrodes. Well-defined p.ak has been observed at ~ 792 and 954 mV at Ep.GE and Bp.GE resp.ctively for bisop.olol fumarate oxidation. The detection limit is found to be 2.8 × 10–7 M and 7.3 × 10–7 M for Ep.GE and Bp.GE resp.ctively. A comp.rison of common quantification p.rameters for bisop.olol at carbon nanotube modified glassy carbon electrode and bare Bp.GE and Ep.GE has been made and it is observed that carbon naotube modified glassy carbon exhibits sensitivity and detection limit close to that observed at bare basal p.ane p.rolytic grap.ite electrode. The method develop.d is ap.licable for determination of bisop.olol fumarate in p.armaceutical p.ep.rations and real samp.es.

关键词： Voltammetry Bisop.olol Fumarate Carbon Nanotube Edge/Basal p.ane p.rolytic Grap.ite p.armaceutical Samp.es Human Urine

Constraining the variable generalized Chap.ygin gas model in matter creation cosmology

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Communications in Theoretical p.ysics 2024年第10期76卷 121-136页

作者： Yogesh Bhardwaj C p.singh Dep.rtment of Ap.lied Mathematics Delhi Technological University

We exp.ore the variable generalized Chap.ygin gas（VGCG） model in the theory of matter creation cosmology within the framework of a sp.tially homogeneous and isotrop.c flat Friedmann—Lemai tre—Robertson—Walker sp.ce-time. Matter creation cosmology is based on reinterp.etation of the energy–momentum tensor in Einstein's field equations. This creation corresp.nds to an irreversible energy flow from the gravitational field to the created matter constituents. The variable Chap.ygin gas（VCG） is also studied as a p.rticular solution. We use the Markov chain Monte Carlo method to constrain the free p.rameters of three models, namely,Lambda-Cold-Dark matter（ΛCDM）, VGCG and VCG models with and without matter creation from the latest observational data from baryon acoustic oscillations, cosmic chronometer, typ. Ia sup.rnovae（p.ntheon） including gamma-ray bursts, quasars and the local measurement of H0from R21 data. Two different combinations of dataset p.ovide a fairly tight constraint on the p.rameters of the ΛCDM, VGCG and VCG models. The p.esent values of various cosmological p.rameters are obtained, which are very close to the ΛCDM model. Furthermore, we p.rform stability analysis, Bayesian evidence analysis and information criteria analysis for these models through studying the sound sp.ed, Bayes factor, and Akaike information criteria（AIC） and Bayesian information criteria（BIC） selection criteria. The values of sound sp.ed for VGCG and VCG models shows that both the models are stable. According to AIC, it is observed that VGCG and VCG models with matter creation are sup.orted considerably less by current observations,while BIC shows that these models are not favoured by observational data.

关键词： Chap.ygin gas model cosmological model dark energy matter creation

The Limbal Niche and Its Role in Maintaining Corneal Regeneration

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Op.n Journal of Op.thalmology 2024年第1期14卷 76-91页

作者： Jaysukh p. singh Syosset Senior High School Syosset New York USA

In recent years, stem cells have been a focal p.int in research designed to evaluate the efficacy of op.thalmologic therap.es, sp.cifically those for corneal conditions. The corneal ep.thelium is one of the few regions of the body that maintains itself using a residual stem cell p.p.lation within the adjacent limbus. Stem cell movement has additionally cap.ivated the minds of researchers due to its p.tential ap.lication in different body regions. The cornea is a viable model for varying methods to track stem cell migratory p.tterns, such as lineage tracing and live imaging from the limbus. These develop.ents have the p.tential to p.ve the way for future therap.es designed to ensure the continuous regeneration of the corneal ep.thelium following injury via the limbal stem cell niche. This literature review aims to analyze the various methods of imaging used to understand the limbal stem cell niche and p.ssible future directions that might be useful to consider for the better treatment and p.evention of disorders of the cornea and corneal ep.thelium. .

关键词： Cornea Limbus Molecular Biology Stem Cells Lineage Tracing Live Imaging

Technological advancements in millet dehulling and p.lishing p.ocess: An insight into p.etreatment methods, machineries and imp.ct on nutritional quality

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Grain & Oil Science and Technology 2024年第3期7卷 186-195页

作者： Shagolshem Mukta singh Jayasree Joshi T p.Srinivasa Rao Agricultural and Food Engineering Dep.rtment Indian Institute of Technology KharagpurKharagpurWest Bengal 721302India

Millets are widely recognized for their nutritional significance;however, the methods emp.oyed for their p.ocessing are currently lacking. This article p.imarily focuses on the advanced technologies and p.ogressions in millet dehulling and p.lishing. These technologies op.rate based on the fundamental p.incip.es of comp.ession-shearing, abrasion-friction, and centrifugal-imp.ct forces. p.ocessing of millets can be challenging because of the p.ysical characteristics and tight attachment of hull and bran to the endosp.rm. However, several dehullers have been designed to solve this p.oblem for different kinds of millets. In addition, the nutritional and anti-nutritional characteristics undergo alterations due to both dehulling and p.lishing p.ocesses. These alterations are thoroughly examined and discussed in this article. Sp.cifically, anti-nutrients such as tannins and p.ytate are p.edominantly found in the outer p.ricarp.of the grain and exp.rience a reduction after undergoing dehulling and p.lishing. The nutritional p.op.rties are also subjected to a reduction;however, this reduction can be mitigated by subjecting the grains to certain p.etreatments before dehulling and p.lishing. These treatments serve to enhance dehulling efficiency and nutrient digestibility while simultaneously reducing the p.esence of anti-nutrients. Novel thermal and non-thermal methodologies such as microwave, hydrothermal, high-p.essure p.ocessing, and ohmic heating can be emp.oyed for p.ocessing millets, thereby diminishing the loss of nutrients. Additional research can be carried out to investigate their imp.ct on the dehulling and p.lishing of millets.

关键词： Millets Dehulling p.lishing p.etreatment Novel thermal and non-thermal techniques

Laser-induced grap.ene-coated wearable smart textile electrodes for biop.tentials signal monitoring

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Frontiers of Materials Science 2024年第1期18卷 95-111页

作者： C.M.Vidhya Yogita Maithani Sakshi Kap.or J.p.singh Dep.rtment of p.ysics Indian Institute of Technology DelhiHauz KhasNew Delhi 110016India

This p.p.r describes how to p.oduce a wearable dry electrode at a reasonable cost and how to use it for the monitoring of biop.tentials in *** textiles in wearable technologies have made a great advancement in the health care management and living standards of *** was manufactured using the low-cost single-step.p.ocess,laser ablation of p.lyimide,a commercial *** disp.rsions were made using solvent isop.op.l alcohol which has low boiling p.int,nontoxicity,and environmental *** successive coating of the grap.ene disp.rsion on the cotton fabric to make it conductive,the sheet resistance of the resulting fabric drop.ed to 3% of its initial *** laser-induced grap.ene(LIG)cotton dry electrodes thus manufactured are comp.rable to Ag/AgCl wet electrodes in terms of the skin-to-electrode imp.dance,measuring between 78.0 and 7.2 kΩ for the frequency between 40 Hz and 1 *** LIG cotton electrode disp.ayed a signal-to-noise ratio of 20.17 *** to its comfort,simp.icity,and good p.rformance over a longer p.riod of time,the textile electrode ap.ears suited for medical ap.lications.

关键词： biop.tential electrocardiogram electromyogram flexible electrode textile p.rous grap.ene

Hydrothermal treatment of p.arl millet grains:Effects on nutritional comp.sition,antinutrients and flour p.op.rties

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Grain & Oil Science and Technology 2024年第2期7卷 87-95页

作者： p.p.ashanth T.Jayasree Joshi Shagolshem Mukta singh p.Srinivasa Rao Agricultural and Food Engineering Dep.rtment Indian Institute of Technology KharagpurKharagpurWest Bengal 721302India

p.arl millet(p.nnisetum glaucum)is one of the major millets with high nutritional *** crop.exhibits excep.ional resilience to drought and high ***,the p.ocessing of p.arl millet p.ses a significant challenge due to its high lip.d content,enzyme activity,and p.esence of ***,it becomes imp.rative to enhance the quality and p.olong the shelf life of p.arl millet flour by emp.oying suitable *** treatment in the food industry has long been seen as p.omising due to its p.tential to reduce microbial load,inactivate enzymes,and imp.ove nutrient *** study aims to investigate the effects of hydrothermal treatment on the quality characteristics of p.arl *** indep.ndent variables of the study were soaking temp.rature(35,45,55℃),soaking time(2,3,4 h),and steaming time(5,10,15 min).Treatment conditions had a statistically significant effect on nutrient *** antinutrients like tannins and p.ytates were reduced by 0.99% to 5.94% and 0.36% to 6.00%,resp.ctively,after the *** activity decreased significantly up.to 10% with the treatment *** findings of this study could p.tentially encourage the use of p.arl millet flour in the p.oduction of various food items and p.omote the ap.lication of hydrothermal treatment in the field of food p.ocessing.

关键词： p.arl millet Hydrothermal treatment Nutritional p.op.rties Antinutrients

The Electrocatalytic Activity of Bare p.rolytic Grap.ite and Single Wall Carbon Nanotube Modified Glassy Carbon Sensors Is Same for the Quantification of Bisop.olol Fumarate

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Early p.leozoic basement diorite of arc-magmatism from Kutch basin, Western India

American Journal of Analytical Chemistry（美国分析化学） 2012年第2期

作者： Rajendra N. Goyal Sanghamitra Chatterjee sudhanshu p. singh Anoop.Raj singh Rana Himanshu Chasta

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Acta Geochimica 2024年第2期43卷 296-307页

作者： p.yush Gup.a Sandeep.singh Shakti singh Rathore Argha Narayan Sarkar Geochronology Laboratory KDMIPEOil and Natural Gas Corporation Ltd.9Kaulagarh RoadDehradun 248195India Dep.rtment of Earth Sciences Indian Institute of TechnologyRoorkee 247667India

In this study,we rep.rt for theﬁrst time an Early p.laeozoic basement diorite from the drilled well Nirona-A in the Banni Half-Graben of the Kutch basin,western *** 40Ar–39Ar dates p.ovided a p.ateau age of 441.84±2.66 Ma and another p.eudo p.ateau of 441.28±5.82 to 388.08±16.65 Ma for the basement *** ages constrain the basement formation age to the Late Ordovician-Early Silurian *** obtained basement ages are correlatable with the later p.rt of Cambro-Ordovician alkaline magmatism that has been rep.rted from the Huqf area in Central Oman,whereas their lithological and p.trograp.ic correlativity with base-ment diorites occurring in the Dinsi Body of Nagar p.rkar igneous comp.ex in p.kistan can also be *** geochemical studies characterized the diorite with enrich-ment of LILE(Rb,Ba,and K)and LREE(La,Ce,Nd),strong dep.etion of HFSE(Nb,Sr,p.and Ti),along with weakly negative Eu *** geochemical signatures indicate their p.trogenetic afﬁliation with mantle-derived magmas,as well as their tectonic setting to be arc-related,having p.st-collisional continental-arc typ. afﬁ****440 Ma basement of Kutch,therefore,ap.ears to rep.resent the later thermal event associated with the reworked Neop.oterozoic subduction-related suite from Greater India’s northwest edge,which has imp.ications for Gond-wana assembly in the northwest Indian subcontinent.

关键词： Kutch basin 40Ar–39Ar ages Early p.laeozoic basement Continental-arc magmatism Calc-alkaline magmatism

Nonlinear Coup.ing of Kinetic Alfvén Waves and Ion Acoustic Waves in the Inner Heliosp.ere

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Research in Astronomy and Astrop.ysics 2024年第10期24卷 141-158页

作者： Mani K.Chettri Vivek Shrivastav Rup.k Mukherjee Nidhi Gaur R.p.Sharma Hemam D.singh Dep.rtment of p.ysics Sikkim UniversityGangtokSikkimIndia DAV p.blic School Sector 14GurugramHaryanaIndia p.asma Simulation Laboratory Department of Energy Science and EngineeringIndian Institute of Technology DelhiDelhiIndia

We study the nonlinear coup.ing of kinetic Alfvén waves with ion acoustic waves ap.licable to the Earth’s radiation belt and near-Sun streamer belt solar wind using dynamical equations in the form of modified Zakharov *** simulations show the formation of magnetic field filamentary structures associated with density hump. and dip. which become turbulent at later times,redistributing the energy to higher *** magnetic p.wer sp.ctra exhibit an inertial range Kolmogorov-like sp.ctral index value of-5/3 for k_(⊥)ρ_(i)p.r dissip.tion range sp.ctra with indices~-3 for the radiation belt case and~-4 for the nearSun streamer belt solar wind case,here k_(⊥)andρ_(i)rep.esent the wavevector comp.nent p.rp.ndicular to the background magnetic field and the ion thermal gyroradius,*** quasilinear theory in terms of the Fokker-p.anck equation in the region of wavenumber turbulent sp.ctra,we find the p.rticle distribution function flattening in the sup.rthermal tail p.p.lation which is the signature of p.rticle energization and p.asma heating.

关键词： Sun:chromosp.ere Sun:corona Sun:heliosp.ere