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Singh M.,Sharda University | Singh M.,Greater Noida Institute of Technology | Singh V.K.,Sharda University | Surana K.,Sharda University | And 4 more authors.
Journal of Industrial and Engineering Chemistry | Year: 2013

A solid polymer electrolyte consisting of poly vinylpyrrolidone (PVP) and potassium iodide (KI) were developed, characterized for possible application in dye sensitized solar cell (DSSC) as an electrolyte. Complex impedance spectroscopy revealed the enhancement in electrical conductivity (σ) by salt doping and a conductivity maximum was obtained at 30. wt% KI concentration. Dielectric phenomena also support the σ data. Fourier transform infrared spectroscopy (FTIR) confirmed the composite nature of polymer electrolyte film. Using maximum electrical conductivity film we have fabricated a DSSC which shows 0.14% efficiency at 1 sun condition. © 2012 The Korean Society of Industrial and Engineering Chemistry.

Khatoon S.,Jamia Millia Islamia University | Gupta D.,Greater Noida Institute of Technology
Applied Mechanics and Materials | Year: 2012

In order to enable a mini-UAV to perform target acquisition, localization and continuous surveillance in real world environment one must develop a technology which may be a combination of aircraft engineering, control systems, and wireless communication. The major limiting factors in developing the capabilities of small low cost UAVs are connectivity, computational processing power and lack of resource integration. To overcome these limitations in this research we have tried to assemble an experimental fixed wing prototype glider plane capable of being remotely controlled in the range of 20 meters. We started with a light and flexible fat-propylene twine flute material and developed the airframe, interfaced it with radio controlled remote and embedded on-board micro controller on the glider airframe. Our glider took stable flight with the assembled propeller for 20 minutes successfully. The brushless DC servomotors used for electronic speed control of the UAV worked efficiently and were able to control the rudder and elevator in both directions. The significance of this research is that all the devices used here are low cost and highly efficient. In this paper we have investigated the use of reconfigurable computing as a viable alternative to increase the amount of computational power whilst at the same time minimizing the amount of weight, size, and power consumption. © (2012) Trans Tech Publications, Switzerland.

Sharma M.K.,Jiwaji University | Sharma M.,Jiwaji University | Sharma A.K.,Greater Noida Institute of Technology | Chandra S.,Lovely Professional University
Serbian Astronomical Journal | Year: 2015

In search for life in the Universe, scientists are interested in identification of molecules having amino (-NH2) group in the interstellar space. The aminoacetonitrile (NH2CH2CN), which is precursor of the simplest amino acid glycine (NH2CH2COOH), is identified near the galactic center. The 2-Aminopyridine (H2NC5H4N) is of interest for scientists as it has a close association with life on the earth. Based on spectroscopic studies, we have calculated intensities of 2- Aminopyridine lines due to transitions between the rotational levels up to 47 cm -1 and have found a number of lines which may help in its identification in the interstellar medium. Frequencies of some of these transitions are found close to those detected in the envelope of IRC +10216 that are not assigned to any of the known species.

Sharma M.K.,Jiwaji University | Sharma A.K.,Greater Noida Institute of Technology | Sharma M.,Jiwaji University | Chandra S.,Lovely Professional University | Chandra S.,TU Berlin
New Astronomy | Year: 2016

The glycolaldehyde is detected towards the Galactic center source Sgr B2(N) and towards the massive star-forming region G31.41+0.31 through b-type transitions. The levels for b-type transitions can be classified into two groups: (i) with ka+kc= odd (set I) and (ii) with ka+kc= even (set II). For each of the sets I and II, we have calculated energies of 100 rotational levels. These levels are connected through radiative and collisional transitions. The Einstein A-coefficients for the radiative transitions among the levels are calculated. The collisional rate coefficients are calculated with the help of a scaling law. Using the radiative and collisional transitions probabilities, for each of the sets I and II, we have solved a set of statistical equilibrium equations coupled with the equations of radiative transfer. Two transitions 110-101and 312-303at 13.477 GHz and 17.981 GHz, respectively, of set I, and one transition 211-202at 15.176 GHz of set II are found to have anomalous absorption. These transitions may play important role in the identification of glycolaldehyde in a cosmic object. © 2015 Elsevier B.V. All rights reserved.

Mishra A.K.,Sunderdeep Engineering College | Mishra S.K.,Army Public School Kunraghat | Pandey S.P.,Greater Noida Institute of Technology | Mishra K.L.,Shree Thakurdwara Sr Sec Girls School
Phase Transitions | Year: 2015

We have prepared ZnSe (luminescent grade) phosphor doped with Sn and (Sn,Pr) with varying concentration in an inert atmosphere in a silica tubular furnace at temperature of (780 ± 20) °C for 1 hr to obtain ZnSe:Sn and ZnSe: (Sn,Pr) phosphors. The photo luminescence (PL) and electroluminescence (EL) spectra of these phosphors have been studied at room temperature and results were discussed in the light of existing models. Dependence of EL emission on the voltage frequency has also been carried out. It is found that the plot between the integrated light intensity versus 1/√Vrms is a straight line suggesting the existence of Mott–Schottky type barrier on the metal semiconductor interface. © 2015 Taylor & Francis

Kumar A.,Greater Noida Institute of Technology | Varshney C.L.,P.A. College | Lal S.,P.A. College
Proceedings of the International Conference on Advances in Computing and Artificial Intelligence, ACAI 2011 | Year: 2011

In this paper, we are considering transient MHD free convective flow through an isothermal semi-infinite vertical porous plate with temperature dependent heat source. The governing equations have been solved by using Crank-Nicolson scheme. The non-dimensional form of velocity profiles, temperature profiles, local and average skin-friction and Nusselt number are depicted graphically for different values of the parameter entering into the problem. © 2011 ACM.

Gupta A.K.,Greater Noida Institute of Technology
International Journal of Engineering, Transactions A: Basics | Year: 2012

In this investigation, a two-fluid model consisting of a core region of suspension of all the erythrocytes (particles) in plasma (fluid) assumed to be a particle-fluid mixture and a peripheral layer of cell-free plasma (Newtonian fluid), has been proposed to represent blood flow in small diameter tubes with magnetic effects . The analytical results obtained in the proposed model for effective viscosity, velocity profiles and flow rate have been evaluated numerically for various values of the parameters. Quantitative comparison depicted that present model represents blood flow at hematocrit (≤ 40%) and in vessels up to 70μm in diameter. Using experimental values of the parameters, the flow rate for normal and diseased blood has been computed and compared with corresponding values obtained from a well known experimentally tested model in the literature. The effects of a magnetic field have been used to control the flow, which may be useful in certain hypertension cases, etc.

Gupta V.K.,IMS Engineering College | Chandra M.,Birla Institute of Technology | Sharan S.N.,Greater Noida Institute of Technology
Research Journal of Applied Sciences, Engineering and Technology | Year: 2012

In this study RLS algorithm with Double Log-Sigmoid function (DSRLS) is proposed to minimize the effect of noise from speech signals. The performance of DSRLS is compared with the performance of RLS and RLS algorithm with Log-Sigmoid function (SRLS). Experiments were performed on noisy data which was prepared by adding machine gun, F16 and speech noise to clean speech samples at -5dB, 0dB, 5dB and 10dB SNR levels. The simulation results show that both SRLS and DSRLS perform better than RLS in terms of SNR improvement. However, DSRLS performs best in terms of SNR improvement with MSE decrement. © Maxwell Scientific Organization, 2012.

Gupta V.K.,IMS Engineering College | Chandra M.,Birla Institute of Technology | Sharan S.N.,Greater Noida Institute of Technology
Radioengineering | Year: 2013

In this paper, acoustic echo cancellation with doubletalk detection system for a hand-free telecommunication system is implemented using Matlab. Here adaptive noise canceller with blind source separation (ANC-BSS) system is proposed to remove both background noise and far-end speaker echo signal in presence of double-talk. During the absence of double-talk, far-end speaker echo signal is cancelled by adaptive echo canceller. Both adaptive noise canceller and adaptive echo canceller are implemented using LMS, NLMS, VSLMS and VSNLMS algorithms. The normalized cross-correlation method is used for double-talk detection. VSNLMS has shown its superiority over all other algorithms both for double-talk and in absence of double-talk. During the absence of double-talk it shows its superiority in terms of increment in ERLE and decrement in misalignment. In presence of double-talk, it shows improvement in SNR of near-end speaker signal.

Walia H.,Greater Noida Institute of Technology | Katiyar S.,Galgotias University
Proceedings of the 2015 International Conference on Green Computing and Internet of Things, ICGCIoT 2015 | Year: 2015

Today each and every country is facing the challenge to keep up its competitive advantage vis a vis other countries. They have realized the importance of innovation, research and development as necessary tools to keep them competitive and build their leadership position. Engineers play a pivotal role in building such sustainable competitive advantage for the country by providing solutions to the various technical and social issues. There is a strong need in country like India to build engineering pool with high caliber of Engineering attitude and aptitude. This pool will provide the requisite capability to create innovative solutions in various technical fields. The challenge being faced by academic institutes is how to provide engineering educations which will enable them to build such pool. The convergence of information and communication technologies (ICT) is providing such enabling platform for these institutes. They can build collaborative learning environment and link it to the education grid for engineers. This paper focuses on how an e-learning grid can be created and collaborative learning environment can be established in the various engineering collages and ICT can be leveraged which will facilitate in building research oriented mindset and high caliber engineers with high aptitude to find solutions to problems. This paper will provide the guidelines on what engineering institutes should do to leverage the ICT technologies and how they can build collaborative learning environment and contribute to the national engineering e-learning grid. © 2015 IEEE.

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