Mata Gujri College

Fatehgarh Chūriān, India

Mata Gujri College

Fatehgarh Chūriān, India
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Kumar Y.,Punjabi University | Singh N.,Mata Gujri College
International Journal of Speech Technology | Year: 2017

Automatic speech recognition is the central part of the wheel towards the natural person-to-machine interaction technique. Due to the high disparity of speaking styles, speech recognition surely demands composite methods to constitute this irregularity. A speech recognition method can work in numerous distinct states such as speaker dependent/independent speech, isolated/continuous/spontaneous speech recognition, for less to very large vocabulary. The Punjabi language is being spoken by concerning 104 million peoples in India, Pakistan and other countries with Punjabi migrants. The Punjabi language is written in Gurmukhi writing in Indian Punjab, while in Shahmukhi writing in Pakistani Punjab. In the paper, the objective is to build the speaker independent automatic spontaneous speech recognition system for the Punjabi language. The system is also capable to recognize the spontaneous Punjabi live speech. So far, no work has to be achieved in the area of spontaneous speech recognition system for the Punjabi language. The user interfaces for Punjabi live speech system is created by using the java programming. Till now, automatic speech system is trained with 6012 Punjabi words and 1433 Punjabi sentences. The performance measured in terms of recognition accuracy which is 93.79% for Punjabi words and 90.8% for Punjabi sentences. © 2017 Springer Science+Business Media New York

Singh T.,Mata Gujri College
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms | Year: 2016

The effect of incident electron energy of beta emitter 204Tl (end-point energy = 765 keV) and 90Sr (end-point energy = 546 keV), on the formation of total bremsstrahlung spectra in thick targets, was investigated in the photon energy region of 1–5 keV. Theoretical bremsstrahlung spectra were obtained from theory that describes ordinary bremsstrahlung (OB) and the theoretical model, which includes the contribution of polarization bremsstrahlung (PB) in OB in stripping approximation. The theoretical and experimental bremsstrahlung spectra were modified by applying corrections due to the range of beta particles, self-absorption of photons in target, absorption of photons in detector compounds, and backscattering of beta particle. It was observed that the experimental results were 10–15% higher than that of the theoretical model, which includes the contribution of PB in OB in stripping approximation, particularly for medium and high Z elements. The contribution of PB in OB was suppressed with the increase in the end-point energy of the beta emitters. The results reported here clearly indicate the inadequacy of stripping approximation and the need to include the term of interference of OB and PB while describing the total bremsstrahlung spectra. © 2016 Elsevier B.V.

Kaur M.,Sri Guru Granth Sahib World University | Kaur V.,Mata Gujri College
AIP Conference Proceedings | Year: 2016

The production of different fragments has been studied by taking into account the mass asymmetry of the reaction and employing the momentum dependent interactions. Two different set of asymmetric reactions have been analyzed while keeping Atotal fixed using soft momentum dependent equation of state. Our results indicate that the impact of momentum dependent interactions is different in lighter projectile systems as compared to heavier ones. The comparative analysis of IQMD simulations with the experimental data in case of heavier projectile and lighter target system for the reaction of 197Au+27Al (η = 0.7) at E = 600MeV/nucleon shows that with the inclusion of MDI we are able, upto some extent, to reproduce the experimental universality of rise and fall of intermediate mass fragments (IMFs). © 2016 Author(s).

Sangeeta,Thapar University | Kaur V.,Mata Gujri College
Acta Physica Polonica B | Year: 2017

The structural effects through nuclear charge radius on the multifragmentation and nuclear stopping have been studied for mass symmetric and asymmetric collisions using Isospin-dependent Quantum Molecular Dynamics (IQMD) model. Our analysis shows that the role of increase in radius is more pronounced in mass symmetric collisions compared to asymmetric collisions. Moreover, we explicitly studied the influence of radius on the contribution of projectile and target nuclei in the nuclear stopping.

Sangeeta,Thapar University | Kaur V.,Mata Gujri College
Nuclear Physics A | Year: 2017

The structural and isospin effects have been studied through isospin dependent and independent nuclear charge radii parameterizations on the collective flow within the framework of Isospin-dependent Quantum Molecular Dynamics (IQMD) model. The calculations have been carried out by using two approaches: (i) for the reaction series having fixed N/Z ratio and (ii) for the isobaric reaction series with different N/Z ratio. Our results indicate that there is a considerable effect of radii parameterizations on the excitation function of reduced flow [Formula presented] and elliptical flow (v2). Both balance energy (Ebal) and transition energy (Etrans) are enhanced with increase in radii of reacting nuclei and found to follow a power law with nuclear charge radii. The exponent τ values show that the elliptical flow is more sensitive towards different nuclear charge radii as compared to reduced flow. Moreover, we observe that our theoretical calculation of Ebal and Etrans are in agreement with the experimental data provided by GSI, INDRA and FOPI collaborations. © 2017 Elsevier B.V.

Gupta S.,Mata Gujri College | Prakash N.T.,Thapar University
Environmental Science and Pollution Research | Year: 2014

The present study was conducted to isolate and explore bacterial strains with a potential to sequester lead (Pb) and tolerate other heavy metals from industrial effluents and sediments. Out of the six bacterial strains isolated from seleniferous sites of Punjab, three isolates (RS-1, RS-2, and RS-3) were screened out for further growth-associated lead sequestration and molecular characterization on the basis of their tolerance toward lead and other heavy metals. Biomass and cell-free supernatant were analyzed for lead contents using ICP-MS after growth-associated lead sequestration studies in tryptone soya broth (pH = 7.2 ± 0.2) under aerobic conditions at 37 °C temperature. Almost 82 % and 70 % divalent lead was sequestered in cell pellets of RS-1 and RS-3, respectively while only 45 % of lead was found in cell pellet of RS-2 in the first 24 h. However, significant biosequestration of lead was observed in RS-2 after 48 h of incubation with concomitant increase in biomass. Simultaneously, morphological, biochemical, and physiological characterization of selected strains was carried out. 16S rRNA gene sequence of these isolates revealed their phylogenetic relationship with class Bacillaceae, a low G + C firmicutes showing 98 % homology with Bacillus sp. © 2014 Springer-Verlag Berlin Heidelberg.

Singh A.,Mata Gujri College | Dhaliwal A.S.,Sant Longowal Institute of Engineering And Technology
MATEC Web of Conferences | Year: 2016

Total bremsstrahlung spectra in thick targets of Mo and Pt, produced by beta emitter 89Sr (end point energy = 1464 keV) have been studied in the photon energy range of 1-100 keV. The experimentally measured spectra measured were compared with the theoretical spectral distributions calculated from Elwert corrected (non relativistic) Bethe-Heitler [EBH] theory, modified Elwert factor (relativistic) Bethe-Heitler (Fmod BH) theory for ordinary bremsstrahlung (OB) and the modified Elwert factor (relativistic) Bethe-Heitler (Fmod BH+PB) theory, which includes the polarization bremsstrahlung (PB) into total bremsstrahlung (BS). The present results indicate the correctness of Fmod BH+PB theory in the low energy region, where the contributions of PB into BS are dominant. But at the middle and higher energy region of the bremsstrahlung spectrum, where the contribution of PB is negligible, the Fmod BH theory is more close to the experimental results. © Owned by the authors, published by EDP Sciences, 2016.

Kaur M.,Thapar University | Kaur V.,Mata Gujri College | Kumar S.,Thapar University
Physical Review C - Nuclear Physics | Year: 2013

The contribution of various components of potential towards balance energy is analyzed for the reactions of 2658Fe+2658Fe, 2858Ni+2858Ni, 3686Kr+4193Nb, and 79197Au+79197Au using an isospin-dependent quantum molecular dynamics (IQMD) model. We show that the balance energy changes with the addition of various components of potentials. Our calculations for the considered energy range clearly demonstrate the dominance of the Coulomb potential and momentum-dependent interactions over the other potentials for the lighter colliding systems. However, the contribution of the symmetry potential also becomes significant while handling heavier nuclei. © 2013 American Physical Society.

Gupta S.,Mata Gujri College | Nirwan J.,Mata Gujri College
International Journal of Environmental Science and Technology | Year: 2015

Heavy metal pollution affects environment adversely and leads to severe implications for both flora and fauna. In the present work, bacterial strain JS-1 was isolated with tolerance for different metals such as mercury (Hg), lead (Pb), cadmium (Cd), nickel (Ni), arsenic (As), tin (Sn), selenium (Se), zinc (Zn), chromium (Cr) and copper (Cu). JS-1 showed a significant tolerance for mercuric chloride (up to 5,000 μg/g) along with an efficient metal uptake and transformation. Growth of JS-1 was marginally affected on exposure to high mercury concentration due to acclimatization of the culture towards mercury. No mercury was found in cell-free supernatant after 96 h of incubation with 500 μg/g and 1,000 μg/g of mercury as an active ingredient. Almost all the mercury was found associated with cell biomass as determined by hydride generation atomic absorption spectroscopy. Only 60 % of mercury was sequestered in bacterial biomass on exposure to 2,000 and 5,000 μg/g mercury. As a detoxification mechanism, nearly 5 % of sequestered mercury was volatilized by the selected isolate (JS-1). Further X-ray diffraction analysis of deposited silvery grey biomass confirmed biotransformation of sequestered mercuric ions into monovalent mercury (Hg2Cl2), a non-bioavailable form of mercury. Culture was characterized morphologically, physiologically and biochemically. 16S rRNA gene sequence of JS-1 revealed its phylogenetic relationship and 98 % homology with Alcaligenes faecalis, a Gram-negative rod-shaped bacterium. © 2014, Islamic Azad University (IAU).

Gupta S.,Mata Gujri College | Bector S.,Mata Gujri College
Antonie van Leeuwenhoek, International Journal of General and Molecular Microbiology | Year: 2013

Green chemistry is a boon for the development of safe, stable and ecofriendly nanostructures using biological tools. The present study was carried out to explore the potential of selected fungal strains for biosynthesis of intra- and extracellular gold nanostructures. Out of the seven cultures, two fungal strains (SBS-3 and SBS-7) were selected on the basis of development of dark pink colour in cell free supernatant and fungal beads, respectively indicative of extra- and intracellular gold nanoparticles production. Both biomass associated and cell free gold nanoparticles were characterized using X-ray diffractogram (XRD) analysis and transmission electron microscopy (TEM). XRD analysis confirmed crystalline, face-centered cubic lattice of metallic gold nanoparticles along with average crystallite size. A marginal difference in average crystallite size of extracellular (17.76 nm) and intracellular (26 and 22 nm) Au-nanostructures was observed using Scherrer equation. In TEM, a variety of shapes (triangles, spherical, hexagonal) were observed in both extra- and intracellular nanoparticles. 18S rRNA gene sequence analysis by multiple sequence alignment (BLAST) indicated 99 % homology of SBS-3 to Aspergillus fumigatus with 99 % alignment coverage and 98 % homology of SBS-7 to Aspergillus flavus with 98 % alignment coverage respectively. Native-PAGE and activity staining further confirmed enzyme linked synthesis of gold nanoparticles. © 2013 Springer Science+Business Media Dordrecht.

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