1,519 research outputs found

    An Evaluate of Pattern Identification Programs and Its Strategies

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    At the moment existence, Pattern Recognition has turned into an essential idea from analyst perspective. It is utilized as a part of numerous applications like Speech acknowledgment, facade acknowledgment, Biometrics and numerous other moreover. This survey paper will clarify numerous applications and methodologies of the example acknowledgment. Primarily four sorts of methodologies measurable, layout, auxiliary and neural approach. Furthermore, promote factual approach order is likewise done

    Current Controller Based Power Management Strategy for Interfacing DG Units to Micro Grid

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    This paper proposes a power management strategy of parallel inveters based system, to enhance the power generation capacity of the existing system with distributed energy sources one has to choose DG source based inverter connected in parallel with the existing system.Two DG sources PV, Fuel cells feeds the DC voltage to two parallel inverters connected to the grid. Fixed band hysteresis current control with Instantaneous p-q power theory is adopted to create an artificial environment. Two parallel inverters are able to deliver the harvested power from PV, FC to grid and able to balance the load Without communication between parallel inverters this controller having the capability of load following, the harmonic components of currents at output of inverter are also very low; this will automatically reduces the circulating currents between parallel inverters. Simulation studies are carried out to investigate the results of PV, FC systems connected to the utility grid

    Axigluons cannot explain the observed top quark forward-backward asymmetry

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    We study an SU(3)^2 axigluon model introduced by Frampton, Shu, and Wang to explain the recent Fermilab Tevatron observation of a significant positive enhancement in the top quark forward-backward asymmetry relative to standard model predictions. First, we demonstrate that data on neutral B_d-meson mixing excludes the region of model parameter space where the top asymmetry is predicted to be the largest. Keeping the gauge couplings below the critical value that would lead to fermion condensation imposes further limits at large axigluon mass, while precision electroweak constraints on the model are relatively mild. Furthermore, by considering an extension to an SU(3)^3 color group, we demonstrate that embedding the model in an extra-dimensional framework can only dilute the axigluon effect on the forward-backward asymmetry. We conclude that axigluon models are unlikely to be the source of the observed top quark asymmetry.Comment: 12 pages, 7 eps figures included. Minor changes to conform with published versio

    Resonant Raman of OH/OD vibrations and photoluminescence studies in LiTaO3 thin film

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    Resonant Raman spectra (RRS) of O-H and O-D vibration and libration modes, their combinations and higher harmonics have been observed in LiTaO3 polycrystalline thin films. RRS peaks are superimposed on photoluminescence (PL) spectrum. Monochromatic light from a xenon lamp is used as excitation source. PL spectrum shows two broad peaks, first near the band gap in UV (4.4-4.8eV) and another in the sub band gap region (< 4.0 eV). Band gap PL along with RRS peaks are reported for the first time. Photoluminescence excitation spectrum (PLE) shows a peak at 4.8 eV. Peak positions and full width at half maximum (FWHM) of RRS peaks depend upon the excitation energy. Dispersions of the fundamental and the third harmonic of the stretching mode of O-H with excitation energy are about 800 cm-1/eV and 2000 cm-1/eV respectively. This dispersion is much higher than reported in any other material.Comment: 20 page

    Characterizations of GEM detector prototype

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    At NISER-IoP detector laboratory an initiative is taken to build and test Gas Electron Multiplier (GEM) detectors for ALICE experiment. The optimisation of the gas flow rate and the long-term stability test of the GEM detector are performed. The method and test results are presented.Comment: 3 Pages, 4 figure

    A NOVEL VESICULAR APPROACH FOR TRANSDERMAL ADMINISTRATION OF ENALAPRIL MALEATE LOADED NANOPRONIOSOMAL GEL: FORMULATION, EX VIVO EVALUATION AND IN VIVO ANTIHYPERTENSIVE STUDY

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    Objective: The objective of the study was to formulate and evaluate the nanoproniosomal gel of Enalapril maleate (EM) for the treatment of hypertension through the transdermal administration and to provide better bioavailability. Methods: The nanoproniosomal gel of the EM was formulated by Lecithin, Cholesterol, Non-ionic surfactants using the Coacervation-phase separation method. The prepared nanoproniosomal gels were evaluated for pH and viscosity, vesicle size analysis, rate of spontaneity, entrapment efficiency, zeta potential, ex vivo skin permeation studies, skin irritation test, stability studies and in vivo antihypertensive studies. Results: Physical characterization was found to be within acceptable limits. The ex vivo skin permeation studies showed the cumulative permeation of 58.75 % to 89.72 % through the albino rat skin in 24 h for all the formulations, which indicate the zero-order drug permeation with diffusion, non-fickian release. Among all formulations, EMNP7 was selected as best formulation because it showed better characteristics than other formulations in several aspects like physicochemical characterization, ex vivo skin permeation studies, permeation kinetics, and other evaluation parameters. The skin irritation study revealed that there was no irritation after topical application and it was found to be safer to use. The In vivo antihypertensive study revealed that the formulation of EMNP7 was successful to regress the rat blood pressure (BP) to normal values in experimental hypertensive rats. Conclusion: The nanoproniosomal gel is an efficient transdermal therapeutic system for the delivery of EM for the treatment of hypertension. It is suitable for once a day controlled release formulation

    Influence of certain environmental parameters on mass production of rotifers: A review

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    Larviculture of many finfishes and crustaceans in aquaculture depends mainly on the live feed and its unavailability in sufficient quantity is hampering its expansion and culture progress all around the world. The most suitable feed for marine finfish larvae is the commonly available zooplankton species such as rotifer, copepods and Artemia nauplii. Among all, the live feed that has been demonstrated more successfully as the first feed for most of the marine finfish species is rotifer. Optimum conditions are required for better growth, reproduction and increased productivity of rotifers. The major factors that influence the population size of rotifer are temperature and salinity. Hence, the impact of environmental parameters with special focus on the salinity and temperature on the increase in biomass and smaller rotifer production is of utmost importance in the present scenari

    The effect of calcium channel blockers against scopolamine induced cognitive impairment and oxidative stress

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    Background: the present work has been planned to find out the effect of calcium channel blockers on learning and memory. there are numerous reports indicating that calcium channel blockers (CCBS) impair memory and learning and on the other side there are reports indicating that CCBS improve memory and learning .This contradictory reports led us to investigate the effect of CCBS on memory and learning by taking three different types of calcium channel blockers verapamil, nimodipine and diltiazem.Methods: The methods used were elevated plus maze and novel recognition object tests. Ten groups of animals were treated with CCBS and scopolamine. Both prophylactic and curative studies were carried out.Results: It was evident from our studies that the CCBS effectively antagonized the scopolamine induced cognitive impairment in the paradiagms studied. The inflex ratio and novel object discrimination index also increased indicating decrease in the trancefer latencies. CCBS showed good protection against scopolamine induced cognitive.Conclusions: In our Studies we observed that verapamil was good in prophylactic studies and diltiazem in curative studies

    Statistics of work performed on a forced quantum oscillator

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    Various aspects of the statistics of work performed by an external classical force on a quantum mechanical system are elucidated for a driven harmonic oscillator. In this special case two parameters are introduced that are sufficient to completely characterize the force protocol. Explicit results for the characteristic function of work and the respective probability distribution are provided and discussed for three different types of initial states of the oscillator: microcanonical, canonical and coherent states. Depending on the choice of the initial state the probability distributions of the performed work may grossly differ. This result in particular holds also true for identical force protocols. General fluctuation and work theorems holding for microcanonical and canonical initial states are confirmed

    Core Level Photoemission Study of some Superconducting Characteristics in the 1-2-3 System

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