Coimbatore, India

Bharathiar University
Coimbatore, India

Bharathiar University is a state university in Coimbatore, Tamil Nadu, South India. Named after Tamil poet Subramania Bharathiar, the university was established in February 1982 under the provision of Bharathiar University Act, 1981 and was recognized by the University Grants Commission in 1985.The university is in the foothills of Marudamalai road, Coimbatore and has jurisdiction over the districts of Coimbatore, Erode and the Nilgiris. It has 104 affiliated institutions .Bharathiar University celebrated silver jubilee celebrations on 24 February 2007. The then president of India, A. P. J. Abdul Kalam, and the then chief minister of Tamil Nadu, Karunanidhi, were chief guests. Wikipedia.

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Annapoorani N.,Bharathiar University
Lecture Notes in Electrical Engineering | Year: 2017

In this paper, we prove the existence of solutions of fractional impulsive integrodifferential equations of Sobolev type. The results are obtained by using fractional calculus and fixed point techniques. © Springer International Publishing AG 2017.

Lizzy R.M.,Bharathiar University
Lecture Notes in Electrical Engineering | Year: 2017

In this paper we obtain the sufficient conditions for the controllability of nonlinear stochastic fractional integrodifferential systems and nonlinear systems with implicit fractional derivative inHilbert spaces by using the fixed point technique. © Springer International Publishing AG 2017.

Balachandran K.,Bharathiar University
Lecture Notes in Electrical Engineering | Year: 2017

This paper describes the controllability of nonlinear fractional delay dynamical systems with multiple delays in control. Necessary and sufficient conditions for the controllability criteria for linear fractional delay system are established. Further sufficient conditions for the controllability of nonlinear fractional delay system are obtained by using fixed point arguments. Examples are provided to illustrate the results. © Springer International Publishing AG 2017.

Gurusamy A.,Bharathiar University
Lecture Notes in Electrical Engineering | Year: 2017

In this paper,we consider finite element method for time fractional Keller–Segel chemotaxis system. The existence and uniqueness of solutions are proved by using the Schauder’s fixed point theorem. The error estimate of the discrete solution is also established. © Springer International Publishing AG 2017.

Rajagopal J.N.,Bharathiar University
Lecture Notes in Electrical Engineering | Year: 2017

This paper investigate the relative controllability of nonlinear fractional delay dynamical system with time varying delay in control. The necessary and sufficient conditions for the relative controllability criteria for linear fractional delay system are obtained. The sufficient conditions for the relative controllability of nonlinear fractional delay system are obtained by using Schauder fixed point arguments. Illustrative examples are given to examine the results obtained. © Springer International Publishing AG 2017.

Karunamoorthi K.,Jimma University | Karunamoorthi K.,Bharathiar University
Clinical Microbiology and Infection | Year: 2011

Over many decades, malaria elimination has been considered to be one of the most ambitious goals of the international community. Vector control is a cornerstone in malaria control, owing to the lack of reliable vaccines, the emergence of drug resistance, and unaffordable potent antimalarials. In the recent past, a few countries have achieved malaria elimination by employing existing front-line vector control interventions and active case management. However, many challenges lie ahead on the long road to meaningful accomplishment, and the following issues must therefore be adequately addressed in malaria-prone settings in order to achieve our target of 100% worldwide malaria elimination and eventual eradication: (i) consistent administration of integrated vector management; (ii) identification of innovative user and environment-friendly alternative technologies and delivery systems; (iii) exploration and development of novel and powerful contextual community-based interventions; and (iv) improvement of the efficiency and efficacy of existing interventions and their combinations, such as vector control, diagnosis, treatment, vaccines, biological control of vectors, environmental management, and surveillance. I strongly believe that we are moving in the right direction, along with partnership-wide support, towards the enviable milestone of malaria elimination by employing vector control as a potential tool. © 2011 The Author. Clinical Microbiology and Infection © 2011 European Society of Clinical Microbiology and Infectious Diseases.

Sankar K.V.,Bharathiar University | Selvan R.K.,Bharathiar University
Journal of Power Sources | Year: 2015

The ternary MnFe2O4/graphene/polyaniline (PANI) composite was successfully prepared for the negative electrode in hybrid supercapacitors. The MnFe2O4 particles are synthesized by polymer assisted solution combustion method without any high temperature calcinations. Similarly, the flexible graphene and PANI are prepared by eco-friendly hydrothermal and in situ polymerization method, respectively. The presence of possible functional groups and the existence of individual constituents in the composite were identified through Fourier transform infra-red spectra (FT-IR) and Raman spectra. Transmission electron microscope (TEM) image reveals that the MnFe2O4 particles are dispersed on the flexible graphene sheet and are wrapped by PANI. The ternary composite electrode delivered a specific capacitance of 241 F g-1 at 0.5 mA cm-2, which was 7.5 times higher than MnFe2O4. The calculated b-value elucidates that the charge storage mechanism in the ternary system is based on the capacitive behavior rather than intercalation. The increase in ratio between capacitive and intercalation current with respect to scan rate corroborates that the pseudocapacitive charge storage mechanism is dominant. Further, the fabricated hybrid supercapacitor provides the maximum specific capacitance and energy density of 48.5 F g-1 at 0.5 mA cm-2 and 17 Wh kg-1, respectively. In addition, the hybrid supercapacitor exhibits excellent cyclic stability of up to 5000 successive cycles. © 2014 Elsevier B.V.

Sujitha M.V.,Bharathiar University | Kannan S.,Bharathiar University
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2013

This study reports the biological synthesis of gold nanoparticles by the reduction of HAuCl4 by using citrus fruits (Citrus limon, Citrus reticulata and Citrus sinensis) juice extract as the reducing and stabilizing agent. A various shape and size of gold nanoparticles were formed when the ratio of the reactants were altered with respect to 1.0 mM chloroauric acid solution. The gold nanoparticles obtained were characterized by UV-visible spectra, transmission electron microscopy (TEM) and X-ray diffraction (XRD). TEM studies showed the particles to be of various shapes and sizes and particle size ranges from 15 to 80 nm. Selected-area electron diffraction (SAED) pattern confirmed fcc phase and crystallinity of the particles. The X-ray diffraction analysis revealed the distinctive facets (1 1 1, 2 0 0, 2 2 0 and 2 2 2 planes) of gold nanoparticles. Dynamic light scattering (DLS) studies revealed that the average size for colloid gp3 of C. limon, C. reticulata and C. sinensis are 32.2 nm, 43.4 nm and 56.7 nm respectively. The DLS graph showed that the particles size was larger and more polydispersed compared to the one observed by TEM due to the fact that the measured size also includes the bio-organic compounds enveloping the core of the Au NPs. Zeta potential value for gold nanoparticles obtained from colloid gp3 of C. limon, C. reticulata and C. sinensis are -45.9, -37.9 and -31.4 respectively indicating the stability of the synthesized nanoparticles. Herein we propose a novel, previously unexploited method for the biological syntheses of polymorphic gold nanoparticles with potent biological applications. © 2012 Elsevier B.V. All rights reserved.

Manimaran K.,Bharathiar University | Balasubramaniam M.,Bharathiar University
Physical Review C - Nuclear Physics | Year: 2011

All possible ternary fragmentations in fission of Cf252 are studied in collinear configuration within a spherical approximation using the recently proposed "three cluster model." The potential energy surface of collinear configuration exhibits a strong valley around Ca48 and its neighboring nuclei Ca50, Ti54, and Cr60. Such strong minima are not seen in the potential energy surface of an equatorial configuration. As a consequence of strong minima in the potential, the overall relative yield is higher for the ternary fragmentation with Ca48, Ca50, Ti54, Cr60, and Ge82 as the third fragment. The results of potential energy and relative yield calculations reveal that collinear configuration increases the probability of emission of heavy fragments like Ca48 (doubly magic nucleus) and its neighboring nuclei as the third fragment. The obtained results indicate that the collinear configuration is the preferred configuration for intermediate nuclei (Ca48, Ca50, Ti54, and Cr60) as the third fragment in particle accompanied fission while the equatorial configuration may be a preferred configuration for light nuclei (He4, Be10) as the third fragment. © 2011 American Physical Society.

Panneerselvam C.,Bharathiar University | Murugan K.,Bharathiar University
Parasitology Research | Year: 2013

Mosquito-borne diseases with an economic impact create loss in commercial and labor outputs, particularly in countries with tropical and subtropical climates. Mosquito control is facing a threat because of the emergence of resistance to synthetic insecticides. Extracts from plants may be alternative sources of mosquito control agents because they constitute a rich source of bioactive compounds that are biodegradable into nontoxic products and potentially suitable for use to control mosquitoes. Insecticides of botanical origin may serve as suitable alternative biocontrol techniques in the future. In view of the recently increased interest in developing plant origin insecticides as an alternative to chemical insecticide, this study was undertaken to assess the adulticidal, repellent, and ovicidal potential of the crude hexane, ethyl acetate, benzene, aqueous, and methanol solvent extracts from the medicinal plants Andrographis paniculata, Cassia occidentalis, and Euphorbia hirta against the medically important mosquito vector, Anopheles stephensi (Diptera: Culicidae).The adult mortality was observed after 24 h of exposure. All extracts showed moderate adulticide effects; however, the highest adult mortality was found in methanol extract of A. paniculata followed by C. occidentalis and E. hirta against the adults of A. stephensi with LC50 and LC 90 values of 210.30, 225.91, and 263.91 ppm and 527.31, 586.36, and 621.91 ppm, respectively. The results of the repellent activity of hexane, ethyl acetate, benzene, aqueous, and methanol extract of A. paniculata, C. occidentalis, and E. hirta plants at three different concentrations of 1.0, 3.0, and 6.0 mg/cm2 were applied on skin of forearm in man and exposed against adult female mosquitoes. In this observation, these three plant crude extracts gave protection against mosquito bites without any allergic reaction to the test person, and also, the repellent activity is dependent on the strength of the plant extracts. Mean percent hatchability of the ovicidal activity was observed 48 h post-treatment. The percent hatchability was inversely proportional to the concentration of extract and directly proportional to the eggs. Mortality of 100 % with methanol extract of A. paniculata exerted at 150 ppm and aqueous, methanol extract of C. occidentalis and E. hirta were exerted at 300 ppm. These results suggest that the leaf extracts of A. paniculata, C. occidentalis, and E. hirta have the potential to be used as an ideal eco-friendly approach for the control of the A. stephensi. Further detailed research is needed to identify the active ingredient in the extracts and implement the effective mosquito management program. © 2012 Springer-Verlag Berlin Heidelberg.

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